“RNCSafeAreaView” was not found in the UIManager

I try to open a bundle, but when the android is running it shows the next message

2020-01-05 23:15:45.366 26210-26210/com.note.principal W/.note.principa: Accessing hidden field Landroid/view/View;->mAccessibilityDelegate:Landroid/view/View$AccessibilityDelegate; (light greylist, reflection) 2020-01-05 23:15:45.470 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: “RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.494 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.502 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.794 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.832 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.856 26210-26244/com.note.principal E/AndroidRuntime: FATAL EXCEPTION: mqt_native_modules Process: com.note.principal, PID: 26210 com.facebook.react.common.JavascriptException: Invariant Violation: requireNativeComponent: "RNCSafeAreaView" was not found in 

the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected]      at com.facebook.react.modules.core.ExceptionsManagerModule.reportException(ExceptionsManagerModule.java:71)     at java.lang.reflect.Method.invoke(Native Method)     at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:371)     at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:150)     at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)     at android.os.Handler.handleCallback(Handler.java:873)     at android.os.Handler.dispatchMessage(Handler.java:99)     at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:26)     at android.os.Looper.loop(Looper.java:193)     at com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run(MessageQueueThreadImpl.java:225)     at java.lang.Thread.run(Thread.java:764) 2020-01-05 23:15:45.862 26210-26244/com.note.principal I/Process: Sending signal. 

PID: 26210 SIG: 9

The package of project is

{   "name": "Notes",   "version": "0.0.1",   "private": true,   "scripts": {     "android": "react-native run-android",     "ios": "react-native run-ios",     "start": "react-native start",     "bundle_android": "react-native bundle --entry-file index.js --platform android --dev false --bundle-output ./bundles/android/index.android.bundle",     "bundle_ios": "react-native bundle --entry-file index.js --platform ios --dev false --bundle-output ./bundles/ios/main.jsbundle",     "test": "jest",     "lint": "eslint ."   },   "dependencies": {     "@react-native-community/masked-view": "^0.1.5",     "prop-types": "^15.7.2",     "react": "16.9.0",     "react-native": "0.61.5",     "react-native-gesture-handler": "^1.5.3",     "react-native-linear-gradient": "^2.5.6",     "react-native-safe-area-context": "^0.6.2",     "react-navigation": "^4.0.10",     "react-navigation-stack": "^2.0.8"   },   "devDependencies": {     "@babel/core": "^7.7.7",     "@babel/runtime": "^7.7.7",     "@react-native-community/eslint-config": "^0.0.6",     "babel-jest": "^24.9.0",     "eslint": "^6.8.0",     "jest": "^24.9.0",     "metro-react-native-babel-preset": "^0.57.0",     "react-test-renderer": "16.9.0"   },   "jest": {     "preset": "react-native"   } } 

The project of gradle

include ':app' rootProject.name='Notes'   include ':hermes-engine' project(':hermes-engine').projectDir = new File(rootProject.projectDir, '../node_modules/hermes-engine/android/')  include ':react-native-gesture-handler' project(':react-native-gesture-handler').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-gesture-handler/android')  include ':react-native-linear-gradient' project(':react-native-linear-gradient').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-linear-gradient/android')    // Top-level build file where you can add configuration options common to all sub-projects/modules.  buildscript {     ext.kotlin_version = '1.3.50'     repositories {         google()         jcenter()         mavenLocal()      }     dependencies {         classpath 'com.android.tools.build:gradle:3.4.2'         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"         // NOTE: Do not place your application dependencies here; they belong         // in the individual module build.gradle files     } }  allprojects {     repositories {         google()         jcenter()         mavenLocal()         maven {             // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm             url "$rootDir/../node_modules/react-native/android"         }         maven {             // Android JSC is installed from npm             url("$rootDir/../node_modules/jsc-android/dist")         }     } }  task clean(type: Delete) {     delete rootProject.buildDir }     apply plugin: 'com.android.application'  apply plugin: 'kotlin-android'  apply plugin: 'kotlin-android-extensions'  android {     compileSdkVersion 28     buildToolsVersion "28.0.3"     defaultConfig {         applicationId ""         minSdkVersion 21         targetSdkVersion 28         versionCode 1         versionName "1.0"         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"     }     buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'         }     } }  project.ext.react = [         enableHermes: false, ]  def jscFlavor = 'org.webkit:android-jsc:+' def enableHermes = project.ext.react.get("enableHermes", false)  dependencies {     implementation fileTree(dir: 'libs', include: ['*.jar'])     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"     implementation 'com.android.support:appcompat-v7:28.0.0'     implementation 'com.android.support.constraint:constraint-layout:1.1.3'     testImplementation 'junit:junit:4.12'     androidTestImplementation 'com.android.support.test:runner:1.0.2'     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'     implementation "com.facebook.react:react-native:+"     implementation 'com.android.support:support-annotations:27.1.1'     implementation project(':react-native-gesture-handler')     implementation project(':react-native-linear-gradient')      if (enableHermes) {         implementation project(':hermes-engine')         debugImplementation files(hermesPath + "hermes-debug.aar")         releaseImplementation files(hermesPath + "hermes-release.aar")     } else {         implementation jscFlavor     } } 

This is the code of activity

package com.note  import android.content.Intent import android.net.Uri import android.os.Build import android.os.Bundle import android.provider.Settings import android.util.Log import androidx.appcompat.app.AppCompatActivity import com.facebook.react.ReactInstanceManager import com.facebook.react.ReactRootView import com.facebook.react.common.LifecycleState import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler import com.facebook.react.shell.MainReactPackage import com.facebook.soloader.SoLoader import com.swmansion.gesturehandler.react.RNGestureHandlerPackage import com.BV.LinearGradient.LinearGradientPackage  class ReactActivity : AppCompatActivity(), DefaultHardwareBackBtnHandler {      private val OVERLAY_PERMISSION_REQ_CODE = 1      private lateinit var mReactRootView: ReactRootView     private lateinit var mReactInstanceManager: ReactInstanceManager      override fun onCreate(savedInstanceState: Bundle?) {         super.onCreate(savedInstanceState)         SoLoader.init(this, false)         mReactRootView = ReactRootView(this)         mReactInstanceManager = ReactInstanceManager.builder()             .setApplication(application)             .setCurrentActivity(this)             .setApplication(application)             .setBundleAssetName("aaaaaa.android.bundle")             .addPackage(MainReactPackage())             .addPackage(RNGestureHandlerPackage())             .addPackage(LinearGradientPackage())             .setInitialLifecycleState(LifecycleState.RESUMED)             .build()         // The string here (e.g. "MyReactNativeApp") has to match         // the string in AppRegistry.registerComponent() in index.js         mReactRootView.startReactApplication(mReactInstanceManager, "Notes", null)          setContentView(mReactRootView)          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {             if (!Settings.canDrawOverlays(this)) {                 val intent = Intent(                         Settings.ACTION_MANAGE_OVERLAY_PERMISSION,                         Uri.parse("package:$packageName")                 )                 startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE)             }         }     }      override fun invokeDefaultOnBackPressed() {         super.onBackPressed()     }      override fun onBackPressed() {         if (mReactInstanceManager != null) {             mReactInstanceManager.onBackPressed()         } else {             super.onBackPressed()         }     }      override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {         if (requestCode == OVERLAY_PERMISSION_REQ_CODE) {             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {                 if (!Settings.canDrawOverlays(this)) {                     // SYSTEM_ALERT_WINDOW permission not granted                 }             }         }         mReactInstanceManager?.onActivityResult(this,requestCode, resultCode, data)     } } 

someone knows what is the solution?

Professor Asked on November 9, 2020 in php.
Add Comment
6 Answer(s)

I try to open a bundle, but when the android is running it shows the next message

2020-01-05 23:15:45.366 26210-26210/com.note.principal W/.note.principa: Accessing hidden field Landroid/view/View;->mAccessibilityDelegate:Landroid/view/View$AccessibilityDelegate; (light greylist, reflection) 2020-01-05 23:15:45.470 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: “RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.494 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.502 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.794 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.832 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.856 26210-26244/com.note.principal E/AndroidRuntime: FATAL EXCEPTION: mqt_native_modules Process: com.note.principal, PID: 26210 com.facebook.react.common.JavascriptException: Invariant Violation: requireNativeComponent: "RNCSafeAreaView" was not found in 

the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected]      at com.facebook.react.modules.core.ExceptionsManagerModule.reportException(ExceptionsManagerModule.java:71)     at java.lang.reflect.Method.invoke(Native Method)     at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:371)     at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:150)     at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)     at android.os.Handler.handleCallback(Handler.java:873)     at android.os.Handler.dispatchMessage(Handler.java:99)     at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:26)     at android.os.Looper.loop(Looper.java:193)     at com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run(MessageQueueThreadImpl.java:225)     at java.lang.Thread.run(Thread.java:764) 2020-01-05 23:15:45.862 26210-26244/com.note.principal I/Process: Sending signal. 

PID: 26210 SIG: 9

The package of project is

{   "name": "Notes",   "version": "0.0.1",   "private": true,   "scripts": {     "android": "react-native run-android",     "ios": "react-native run-ios",     "start": "react-native start",     "bundle_android": "react-native bundle --entry-file index.js --platform android --dev false --bundle-output ./bundles/android/index.android.bundle",     "bundle_ios": "react-native bundle --entry-file index.js --platform ios --dev false --bundle-output ./bundles/ios/main.jsbundle",     "test": "jest",     "lint": "eslint ."   },   "dependencies": {     "@react-native-community/masked-view": "^0.1.5",     "prop-types": "^15.7.2",     "react": "16.9.0",     "react-native": "0.61.5",     "react-native-gesture-handler": "^1.5.3",     "react-native-linear-gradient": "^2.5.6",     "react-native-safe-area-context": "^0.6.2",     "react-navigation": "^4.0.10",     "react-navigation-stack": "^2.0.8"   },   "devDependencies": {     "@babel/core": "^7.7.7",     "@babel/runtime": "^7.7.7",     "@react-native-community/eslint-config": "^0.0.6",     "babel-jest": "^24.9.0",     "eslint": "^6.8.0",     "jest": "^24.9.0",     "metro-react-native-babel-preset": "^0.57.0",     "react-test-renderer": "16.9.0"   },   "jest": {     "preset": "react-native"   } } 

The project of gradle

include ':app' rootProject.name='Notes'   include ':hermes-engine' project(':hermes-engine').projectDir = new File(rootProject.projectDir, '../node_modules/hermes-engine/android/')  include ':react-native-gesture-handler' project(':react-native-gesture-handler').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-gesture-handler/android')  include ':react-native-linear-gradient' project(':react-native-linear-gradient').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-linear-gradient/android')    // Top-level build file where you can add configuration options common to all sub-projects/modules.  buildscript {     ext.kotlin_version = '1.3.50'     repositories {         google()         jcenter()         mavenLocal()      }     dependencies {         classpath 'com.android.tools.build:gradle:3.4.2'         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"         // NOTE: Do not place your application dependencies here; they belong         // in the individual module build.gradle files     } }  allprojects {     repositories {         google()         jcenter()         mavenLocal()         maven {             // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm             url "$rootDir/../node_modules/react-native/android"         }         maven {             // Android JSC is installed from npm             url("$rootDir/../node_modules/jsc-android/dist")         }     } }  task clean(type: Delete) {     delete rootProject.buildDir }     apply plugin: 'com.android.application'  apply plugin: 'kotlin-android'  apply plugin: 'kotlin-android-extensions'  android {     compileSdkVersion 28     buildToolsVersion "28.0.3"     defaultConfig {         applicationId ""         minSdkVersion 21         targetSdkVersion 28         versionCode 1         versionName "1.0"         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"     }     buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'         }     } }  project.ext.react = [         enableHermes: false, ]  def jscFlavor = 'org.webkit:android-jsc:+' def enableHermes = project.ext.react.get("enableHermes", false)  dependencies {     implementation fileTree(dir: 'libs', include: ['*.jar'])     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"     implementation 'com.android.support:appcompat-v7:28.0.0'     implementation 'com.android.support.constraint:constraint-layout:1.1.3'     testImplementation 'junit:junit:4.12'     androidTestImplementation 'com.android.support.test:runner:1.0.2'     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'     implementation "com.facebook.react:react-native:+"     implementation 'com.android.support:support-annotations:27.1.1'     implementation project(':react-native-gesture-handler')     implementation project(':react-native-linear-gradient')      if (enableHermes) {         implementation project(':hermes-engine')         debugImplementation files(hermesPath + "hermes-debug.aar")         releaseImplementation files(hermesPath + "hermes-release.aar")     } else {         implementation jscFlavor     } } 

This is the code of activity

package com.note  import android.content.Intent import android.net.Uri import android.os.Build import android.os.Bundle import android.provider.Settings import android.util.Log import androidx.appcompat.app.AppCompatActivity import com.facebook.react.ReactInstanceManager import com.facebook.react.ReactRootView import com.facebook.react.common.LifecycleState import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler import com.facebook.react.shell.MainReactPackage import com.facebook.soloader.SoLoader import com.swmansion.gesturehandler.react.RNGestureHandlerPackage import com.BV.LinearGradient.LinearGradientPackage  class ReactActivity : AppCompatActivity(), DefaultHardwareBackBtnHandler {      private val OVERLAY_PERMISSION_REQ_CODE = 1      private lateinit var mReactRootView: ReactRootView     private lateinit var mReactInstanceManager: ReactInstanceManager      override fun onCreate(savedInstanceState: Bundle?) {         super.onCreate(savedInstanceState)         SoLoader.init(this, false)         mReactRootView = ReactRootView(this)         mReactInstanceManager = ReactInstanceManager.builder()             .setApplication(application)             .setCurrentActivity(this)             .setApplication(application)             .setBundleAssetName("aaaaaa.android.bundle")             .addPackage(MainReactPackage())             .addPackage(RNGestureHandlerPackage())             .addPackage(LinearGradientPackage())             .setInitialLifecycleState(LifecycleState.RESUMED)             .build()         // The string here (e.g. "MyReactNativeApp") has to match         // the string in AppRegistry.registerComponent() in index.js         mReactRootView.startReactApplication(mReactInstanceManager, "Notes", null)          setContentView(mReactRootView)          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {             if (!Settings.canDrawOverlays(this)) {                 val intent = Intent(                         Settings.ACTION_MANAGE_OVERLAY_PERMISSION,                         Uri.parse("package:$packageName")                 )                 startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE)             }         }     }      override fun invokeDefaultOnBackPressed() {         super.onBackPressed()     }      override fun onBackPressed() {         if (mReactInstanceManager != null) {             mReactInstanceManager.onBackPressed()         } else {             super.onBackPressed()         }     }      override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {         if (requestCode == OVERLAY_PERMISSION_REQ_CODE) {             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {                 if (!Settings.canDrawOverlays(this)) {                     // SYSTEM_ALERT_WINDOW permission not granted                 }             }         }         mReactInstanceManager?.onActivityResult(this,requestCode, resultCode, data)     } } 

someone knows what is the solution?

Professor Answered on November 9, 2020.
Add Comment

I try to open a bundle, but when the android is running it shows the next message

2020-01-05 23:15:45.366 26210-26210/com.note.principal W/.note.principa: Accessing hidden field Landroid/view/View;->mAccessibilityDelegate:Landroid/view/View$AccessibilityDelegate; (light greylist, reflection) 2020-01-05 23:15:45.470 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: “RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.494 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.502 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.794 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.832 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.856 26210-26244/com.note.principal E/AndroidRuntime: FATAL EXCEPTION: mqt_native_modules Process: com.note.principal, PID: 26210 com.facebook.react.common.JavascriptException: Invariant Violation: requireNativeComponent: "RNCSafeAreaView" was not found in 

the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected]      at com.facebook.react.modules.core.ExceptionsManagerModule.reportException(ExceptionsManagerModule.java:71)     at java.lang.reflect.Method.invoke(Native Method)     at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:371)     at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:150)     at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)     at android.os.Handler.handleCallback(Handler.java:873)     at android.os.Handler.dispatchMessage(Handler.java:99)     at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:26)     at android.os.Looper.loop(Looper.java:193)     at com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run(MessageQueueThreadImpl.java:225)     at java.lang.Thread.run(Thread.java:764) 2020-01-05 23:15:45.862 26210-26244/com.note.principal I/Process: Sending signal. 

PID: 26210 SIG: 9

The package of project is

{   "name": "Notes",   "version": "0.0.1",   "private": true,   "scripts": {     "android": "react-native run-android",     "ios": "react-native run-ios",     "start": "react-native start",     "bundle_android": "react-native bundle --entry-file index.js --platform android --dev false --bundle-output ./bundles/android/index.android.bundle",     "bundle_ios": "react-native bundle --entry-file index.js --platform ios --dev false --bundle-output ./bundles/ios/main.jsbundle",     "test": "jest",     "lint": "eslint ."   },   "dependencies": {     "@react-native-community/masked-view": "^0.1.5",     "prop-types": "^15.7.2",     "react": "16.9.0",     "react-native": "0.61.5",     "react-native-gesture-handler": "^1.5.3",     "react-native-linear-gradient": "^2.5.6",     "react-native-safe-area-context": "^0.6.2",     "react-navigation": "^4.0.10",     "react-navigation-stack": "^2.0.8"   },   "devDependencies": {     "@babel/core": "^7.7.7",     "@babel/runtime": "^7.7.7",     "@react-native-community/eslint-config": "^0.0.6",     "babel-jest": "^24.9.0",     "eslint": "^6.8.0",     "jest": "^24.9.0",     "metro-react-native-babel-preset": "^0.57.0",     "react-test-renderer": "16.9.0"   },   "jest": {     "preset": "react-native"   } } 

The project of gradle

include ':app' rootProject.name='Notes'   include ':hermes-engine' project(':hermes-engine').projectDir = new File(rootProject.projectDir, '../node_modules/hermes-engine/android/')  include ':react-native-gesture-handler' project(':react-native-gesture-handler').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-gesture-handler/android')  include ':react-native-linear-gradient' project(':react-native-linear-gradient').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-linear-gradient/android')    // Top-level build file where you can add configuration options common to all sub-projects/modules.  buildscript {     ext.kotlin_version = '1.3.50'     repositories {         google()         jcenter()         mavenLocal()      }     dependencies {         classpath 'com.android.tools.build:gradle:3.4.2'         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"         // NOTE: Do not place your application dependencies here; they belong         // in the individual module build.gradle files     } }  allprojects {     repositories {         google()         jcenter()         mavenLocal()         maven {             // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm             url "$rootDir/../node_modules/react-native/android"         }         maven {             // Android JSC is installed from npm             url("$rootDir/../node_modules/jsc-android/dist")         }     } }  task clean(type: Delete) {     delete rootProject.buildDir }     apply plugin: 'com.android.application'  apply plugin: 'kotlin-android'  apply plugin: 'kotlin-android-extensions'  android {     compileSdkVersion 28     buildToolsVersion "28.0.3"     defaultConfig {         applicationId ""         minSdkVersion 21         targetSdkVersion 28         versionCode 1         versionName "1.0"         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"     }     buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'         }     } }  project.ext.react = [         enableHermes: false, ]  def jscFlavor = 'org.webkit:android-jsc:+' def enableHermes = project.ext.react.get("enableHermes", false)  dependencies {     implementation fileTree(dir: 'libs', include: ['*.jar'])     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"     implementation 'com.android.support:appcompat-v7:28.0.0'     implementation 'com.android.support.constraint:constraint-layout:1.1.3'     testImplementation 'junit:junit:4.12'     androidTestImplementation 'com.android.support.test:runner:1.0.2'     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'     implementation "com.facebook.react:react-native:+"     implementation 'com.android.support:support-annotations:27.1.1'     implementation project(':react-native-gesture-handler')     implementation project(':react-native-linear-gradient')      if (enableHermes) {         implementation project(':hermes-engine')         debugImplementation files(hermesPath + "hermes-debug.aar")         releaseImplementation files(hermesPath + "hermes-release.aar")     } else {         implementation jscFlavor     } } 

This is the code of activity

package com.note  import android.content.Intent import android.net.Uri import android.os.Build import android.os.Bundle import android.provider.Settings import android.util.Log import androidx.appcompat.app.AppCompatActivity import com.facebook.react.ReactInstanceManager import com.facebook.react.ReactRootView import com.facebook.react.common.LifecycleState import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler import com.facebook.react.shell.MainReactPackage import com.facebook.soloader.SoLoader import com.swmansion.gesturehandler.react.RNGestureHandlerPackage import com.BV.LinearGradient.LinearGradientPackage  class ReactActivity : AppCompatActivity(), DefaultHardwareBackBtnHandler {      private val OVERLAY_PERMISSION_REQ_CODE = 1      private lateinit var mReactRootView: ReactRootView     private lateinit var mReactInstanceManager: ReactInstanceManager      override fun onCreate(savedInstanceState: Bundle?) {         super.onCreate(savedInstanceState)         SoLoader.init(this, false)         mReactRootView = ReactRootView(this)         mReactInstanceManager = ReactInstanceManager.builder()             .setApplication(application)             .setCurrentActivity(this)             .setApplication(application)             .setBundleAssetName("aaaaaa.android.bundle")             .addPackage(MainReactPackage())             .addPackage(RNGestureHandlerPackage())             .addPackage(LinearGradientPackage())             .setInitialLifecycleState(LifecycleState.RESUMED)             .build()         // The string here (e.g. "MyReactNativeApp") has to match         // the string in AppRegistry.registerComponent() in index.js         mReactRootView.startReactApplication(mReactInstanceManager, "Notes", null)          setContentView(mReactRootView)          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {             if (!Settings.canDrawOverlays(this)) {                 val intent = Intent(                         Settings.ACTION_MANAGE_OVERLAY_PERMISSION,                         Uri.parse("package:$packageName")                 )                 startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE)             }         }     }      override fun invokeDefaultOnBackPressed() {         super.onBackPressed()     }      override fun onBackPressed() {         if (mReactInstanceManager != null) {             mReactInstanceManager.onBackPressed()         } else {             super.onBackPressed()         }     }      override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {         if (requestCode == OVERLAY_PERMISSION_REQ_CODE) {             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {                 if (!Settings.canDrawOverlays(this)) {                     // SYSTEM_ALERT_WINDOW permission not granted                 }             }         }         mReactInstanceManager?.onActivityResult(this,requestCode, resultCode, data)     } } 

someone knows what is the solution?

Professor Answered on November 9, 2020.
Add Comment

I try to open a bundle, but when the android is running it shows the next message

2020-01-05 23:15:45.366 26210-26210/com.note.principal W/.note.principa: Accessing hidden field Landroid/view/View;->mAccessibilityDelegate:Landroid/view/View$AccessibilityDelegate; (light greylist, reflection) 2020-01-05 23:15:45.470 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: “RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.494 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.502 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.794 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.832 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.856 26210-26244/com.note.principal E/AndroidRuntime: FATAL EXCEPTION: mqt_native_modules Process: com.note.principal, PID: 26210 com.facebook.react.common.JavascriptException: Invariant Violation: requireNativeComponent: "RNCSafeAreaView" was not found in 

the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected]      at com.facebook.react.modules.core.ExceptionsManagerModule.reportException(ExceptionsManagerModule.java:71)     at java.lang.reflect.Method.invoke(Native Method)     at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:371)     at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:150)     at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)     at android.os.Handler.handleCallback(Handler.java:873)     at android.os.Handler.dispatchMessage(Handler.java:99)     at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:26)     at android.os.Looper.loop(Looper.java:193)     at com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run(MessageQueueThreadImpl.java:225)     at java.lang.Thread.run(Thread.java:764) 2020-01-05 23:15:45.862 26210-26244/com.note.principal I/Process: Sending signal. 

PID: 26210 SIG: 9

The package of project is

{   "name": "Notes",   "version": "0.0.1",   "private": true,   "scripts": {     "android": "react-native run-android",     "ios": "react-native run-ios",     "start": "react-native start",     "bundle_android": "react-native bundle --entry-file index.js --platform android --dev false --bundle-output ./bundles/android/index.android.bundle",     "bundle_ios": "react-native bundle --entry-file index.js --platform ios --dev false --bundle-output ./bundles/ios/main.jsbundle",     "test": "jest",     "lint": "eslint ."   },   "dependencies": {     "@react-native-community/masked-view": "^0.1.5",     "prop-types": "^15.7.2",     "react": "16.9.0",     "react-native": "0.61.5",     "react-native-gesture-handler": "^1.5.3",     "react-native-linear-gradient": "^2.5.6",     "react-native-safe-area-context": "^0.6.2",     "react-navigation": "^4.0.10",     "react-navigation-stack": "^2.0.8"   },   "devDependencies": {     "@babel/core": "^7.7.7",     "@babel/runtime": "^7.7.7",     "@react-native-community/eslint-config": "^0.0.6",     "babel-jest": "^24.9.0",     "eslint": "^6.8.0",     "jest": "^24.9.0",     "metro-react-native-babel-preset": "^0.57.0",     "react-test-renderer": "16.9.0"   },   "jest": {     "preset": "react-native"   } } 

The project of gradle

include ':app' rootProject.name='Notes'   include ':hermes-engine' project(':hermes-engine').projectDir = new File(rootProject.projectDir, '../node_modules/hermes-engine/android/')  include ':react-native-gesture-handler' project(':react-native-gesture-handler').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-gesture-handler/android')  include ':react-native-linear-gradient' project(':react-native-linear-gradient').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-linear-gradient/android')    // Top-level build file where you can add configuration options common to all sub-projects/modules.  buildscript {     ext.kotlin_version = '1.3.50'     repositories {         google()         jcenter()         mavenLocal()      }     dependencies {         classpath 'com.android.tools.build:gradle:3.4.2'         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"         // NOTE: Do not place your application dependencies here; they belong         // in the individual module build.gradle files     } }  allprojects {     repositories {         google()         jcenter()         mavenLocal()         maven {             // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm             url "$rootDir/../node_modules/react-native/android"         }         maven {             // Android JSC is installed from npm             url("$rootDir/../node_modules/jsc-android/dist")         }     } }  task clean(type: Delete) {     delete rootProject.buildDir }     apply plugin: 'com.android.application'  apply plugin: 'kotlin-android'  apply plugin: 'kotlin-android-extensions'  android {     compileSdkVersion 28     buildToolsVersion "28.0.3"     defaultConfig {         applicationId ""         minSdkVersion 21         targetSdkVersion 28         versionCode 1         versionName "1.0"         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"     }     buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'         }     } }  project.ext.react = [         enableHermes: false, ]  def jscFlavor = 'org.webkit:android-jsc:+' def enableHermes = project.ext.react.get("enableHermes", false)  dependencies {     implementation fileTree(dir: 'libs', include: ['*.jar'])     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"     implementation 'com.android.support:appcompat-v7:28.0.0'     implementation 'com.android.support.constraint:constraint-layout:1.1.3'     testImplementation 'junit:junit:4.12'     androidTestImplementation 'com.android.support.test:runner:1.0.2'     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'     implementation "com.facebook.react:react-native:+"     implementation 'com.android.support:support-annotations:27.1.1'     implementation project(':react-native-gesture-handler')     implementation project(':react-native-linear-gradient')      if (enableHermes) {         implementation project(':hermes-engine')         debugImplementation files(hermesPath + "hermes-debug.aar")         releaseImplementation files(hermesPath + "hermes-release.aar")     } else {         implementation jscFlavor     } } 

This is the code of activity

package com.note  import android.content.Intent import android.net.Uri import android.os.Build import android.os.Bundle import android.provider.Settings import android.util.Log import androidx.appcompat.app.AppCompatActivity import com.facebook.react.ReactInstanceManager import com.facebook.react.ReactRootView import com.facebook.react.common.LifecycleState import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler import com.facebook.react.shell.MainReactPackage import com.facebook.soloader.SoLoader import com.swmansion.gesturehandler.react.RNGestureHandlerPackage import com.BV.LinearGradient.LinearGradientPackage  class ReactActivity : AppCompatActivity(), DefaultHardwareBackBtnHandler {      private val OVERLAY_PERMISSION_REQ_CODE = 1      private lateinit var mReactRootView: ReactRootView     private lateinit var mReactInstanceManager: ReactInstanceManager      override fun onCreate(savedInstanceState: Bundle?) {         super.onCreate(savedInstanceState)         SoLoader.init(this, false)         mReactRootView = ReactRootView(this)         mReactInstanceManager = ReactInstanceManager.builder()             .setApplication(application)             .setCurrentActivity(this)             .setApplication(application)             .setBundleAssetName("aaaaaa.android.bundle")             .addPackage(MainReactPackage())             .addPackage(RNGestureHandlerPackage())             .addPackage(LinearGradientPackage())             .setInitialLifecycleState(LifecycleState.RESUMED)             .build()         // The string here (e.g. "MyReactNativeApp") has to match         // the string in AppRegistry.registerComponent() in index.js         mReactRootView.startReactApplication(mReactInstanceManager, "Notes", null)          setContentView(mReactRootView)          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {             if (!Settings.canDrawOverlays(this)) {                 val intent = Intent(                         Settings.ACTION_MANAGE_OVERLAY_PERMISSION,                         Uri.parse("package:$packageName")                 )                 startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE)             }         }     }      override fun invokeDefaultOnBackPressed() {         super.onBackPressed()     }      override fun onBackPressed() {         if (mReactInstanceManager != null) {             mReactInstanceManager.onBackPressed()         } else {             super.onBackPressed()         }     }      override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {         if (requestCode == OVERLAY_PERMISSION_REQ_CODE) {             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {                 if (!Settings.canDrawOverlays(this)) {                     // SYSTEM_ALERT_WINDOW permission not granted                 }             }         }         mReactInstanceManager?.onActivityResult(this,requestCode, resultCode, data)     } } 

someone knows what is the solution?

Professor Answered on November 9, 2020.
Add Comment

I try to open a bundle, but when the android is running it shows the next message

2020-01-05 23:15:45.366 26210-26210/com.note.principal W/.note.principa: Accessing hidden field Landroid/view/View;->mAccessibilityDelegate:Landroid/view/View$AccessibilityDelegate; (light greylist, reflection) 2020-01-05 23:15:45.470 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: “RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.494 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.502 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.794 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.832 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.856 26210-26244/com.note.principal E/AndroidRuntime: FATAL EXCEPTION: mqt_native_modules Process: com.note.principal, PID: 26210 com.facebook.react.common.JavascriptException: Invariant Violation: requireNativeComponent: "RNCSafeAreaView" was not found in 

the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected]      at com.facebook.react.modules.core.ExceptionsManagerModule.reportException(ExceptionsManagerModule.java:71)     at java.lang.reflect.Method.invoke(Native Method)     at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:371)     at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:150)     at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)     at android.os.Handler.handleCallback(Handler.java:873)     at android.os.Handler.dispatchMessage(Handler.java:99)     at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:26)     at android.os.Looper.loop(Looper.java:193)     at com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run(MessageQueueThreadImpl.java:225)     at java.lang.Thread.run(Thread.java:764) 2020-01-05 23:15:45.862 26210-26244/com.note.principal I/Process: Sending signal. 

PID: 26210 SIG: 9

The package of project is

{   "name": "Notes",   "version": "0.0.1",   "private": true,   "scripts": {     "android": "react-native run-android",     "ios": "react-native run-ios",     "start": "react-native start",     "bundle_android": "react-native bundle --entry-file index.js --platform android --dev false --bundle-output ./bundles/android/index.android.bundle",     "bundle_ios": "react-native bundle --entry-file index.js --platform ios --dev false --bundle-output ./bundles/ios/main.jsbundle",     "test": "jest",     "lint": "eslint ."   },   "dependencies": {     "@react-native-community/masked-view": "^0.1.5",     "prop-types": "^15.7.2",     "react": "16.9.0",     "react-native": "0.61.5",     "react-native-gesture-handler": "^1.5.3",     "react-native-linear-gradient": "^2.5.6",     "react-native-safe-area-context": "^0.6.2",     "react-navigation": "^4.0.10",     "react-navigation-stack": "^2.0.8"   },   "devDependencies": {     "@babel/core": "^7.7.7",     "@babel/runtime": "^7.7.7",     "@react-native-community/eslint-config": "^0.0.6",     "babel-jest": "^24.9.0",     "eslint": "^6.8.0",     "jest": "^24.9.0",     "metro-react-native-babel-preset": "^0.57.0",     "react-test-renderer": "16.9.0"   },   "jest": {     "preset": "react-native"   } } 

The project of gradle

include ':app' rootProject.name='Notes'   include ':hermes-engine' project(':hermes-engine').projectDir = new File(rootProject.projectDir, '../node_modules/hermes-engine/android/')  include ':react-native-gesture-handler' project(':react-native-gesture-handler').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-gesture-handler/android')  include ':react-native-linear-gradient' project(':react-native-linear-gradient').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-linear-gradient/android')    // Top-level build file where you can add configuration options common to all sub-projects/modules.  buildscript {     ext.kotlin_version = '1.3.50'     repositories {         google()         jcenter()         mavenLocal()      }     dependencies {         classpath 'com.android.tools.build:gradle:3.4.2'         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"         // NOTE: Do not place your application dependencies here; they belong         // in the individual module build.gradle files     } }  allprojects {     repositories {         google()         jcenter()         mavenLocal()         maven {             // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm             url "$rootDir/../node_modules/react-native/android"         }         maven {             // Android JSC is installed from npm             url("$rootDir/../node_modules/jsc-android/dist")         }     } }  task clean(type: Delete) {     delete rootProject.buildDir }     apply plugin: 'com.android.application'  apply plugin: 'kotlin-android'  apply plugin: 'kotlin-android-extensions'  android {     compileSdkVersion 28     buildToolsVersion "28.0.3"     defaultConfig {         applicationId ""         minSdkVersion 21         targetSdkVersion 28         versionCode 1         versionName "1.0"         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"     }     buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'         }     } }  project.ext.react = [         enableHermes: false, ]  def jscFlavor = 'org.webkit:android-jsc:+' def enableHermes = project.ext.react.get("enableHermes", false)  dependencies {     implementation fileTree(dir: 'libs', include: ['*.jar'])     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"     implementation 'com.android.support:appcompat-v7:28.0.0'     implementation 'com.android.support.constraint:constraint-layout:1.1.3'     testImplementation 'junit:junit:4.12'     androidTestImplementation 'com.android.support.test:runner:1.0.2'     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'     implementation "com.facebook.react:react-native:+"     implementation 'com.android.support:support-annotations:27.1.1'     implementation project(':react-native-gesture-handler')     implementation project(':react-native-linear-gradient')      if (enableHermes) {         implementation project(':hermes-engine')         debugImplementation files(hermesPath + "hermes-debug.aar")         releaseImplementation files(hermesPath + "hermes-release.aar")     } else {         implementation jscFlavor     } } 

This is the code of activity

package com.note  import android.content.Intent import android.net.Uri import android.os.Build import android.os.Bundle import android.provider.Settings import android.util.Log import androidx.appcompat.app.AppCompatActivity import com.facebook.react.ReactInstanceManager import com.facebook.react.ReactRootView import com.facebook.react.common.LifecycleState import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler import com.facebook.react.shell.MainReactPackage import com.facebook.soloader.SoLoader import com.swmansion.gesturehandler.react.RNGestureHandlerPackage import com.BV.LinearGradient.LinearGradientPackage  class ReactActivity : AppCompatActivity(), DefaultHardwareBackBtnHandler {      private val OVERLAY_PERMISSION_REQ_CODE = 1      private lateinit var mReactRootView: ReactRootView     private lateinit var mReactInstanceManager: ReactInstanceManager      override fun onCreate(savedInstanceState: Bundle?) {         super.onCreate(savedInstanceState)         SoLoader.init(this, false)         mReactRootView = ReactRootView(this)         mReactInstanceManager = ReactInstanceManager.builder()             .setApplication(application)             .setCurrentActivity(this)             .setApplication(application)             .setBundleAssetName("aaaaaa.android.bundle")             .addPackage(MainReactPackage())             .addPackage(RNGestureHandlerPackage())             .addPackage(LinearGradientPackage())             .setInitialLifecycleState(LifecycleState.RESUMED)             .build()         // The string here (e.g. "MyReactNativeApp") has to match         // the string in AppRegistry.registerComponent() in index.js         mReactRootView.startReactApplication(mReactInstanceManager, "Notes", null)          setContentView(mReactRootView)          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {             if (!Settings.canDrawOverlays(this)) {                 val intent = Intent(                         Settings.ACTION_MANAGE_OVERLAY_PERMISSION,                         Uri.parse("package:$packageName")                 )                 startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE)             }         }     }      override fun invokeDefaultOnBackPressed() {         super.onBackPressed()     }      override fun onBackPressed() {         if (mReactInstanceManager != null) {             mReactInstanceManager.onBackPressed()         } else {             super.onBackPressed()         }     }      override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {         if (requestCode == OVERLAY_PERMISSION_REQ_CODE) {             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {                 if (!Settings.canDrawOverlays(this)) {                     // SYSTEM_ALERT_WINDOW permission not granted                 }             }         }         mReactInstanceManager?.onActivityResult(this,requestCode, resultCode, data)     } } 

someone knows what is the solution?

Professor Answered on November 9, 2020.
Add Comment

I try to open a bundle, but when the android is running it shows the next message

2020-01-05 23:15:45.366 26210-26210/com.note.principal W/.note.principa: Accessing hidden field Landroid/view/View;->mAccessibilityDelegate:Landroid/view/View$AccessibilityDelegate; (light greylist, reflection) 2020-01-05 23:15:45.470 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: “RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.494 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.502 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.794 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.832 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.856 26210-26244/com.note.principal E/AndroidRuntime: FATAL EXCEPTION: mqt_native_modules Process: com.note.principal, PID: 26210 com.facebook.react.common.JavascriptException: Invariant Violation: requireNativeComponent: "RNCSafeAreaView" was not found in 

the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected]      at com.facebook.react.modules.core.ExceptionsManagerModule.reportException(ExceptionsManagerModule.java:71)     at java.lang.reflect.Method.invoke(Native Method)     at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:371)     at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:150)     at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)     at android.os.Handler.handleCallback(Handler.java:873)     at android.os.Handler.dispatchMessage(Handler.java:99)     at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:26)     at android.os.Looper.loop(Looper.java:193)     at com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run(MessageQueueThreadImpl.java:225)     at java.lang.Thread.run(Thread.java:764) 2020-01-05 23:15:45.862 26210-26244/com.note.principal I/Process: Sending signal. 

PID: 26210 SIG: 9

The package of project is

{   "name": "Notes",   "version": "0.0.1",   "private": true,   "scripts": {     "android": "react-native run-android",     "ios": "react-native run-ios",     "start": "react-native start",     "bundle_android": "react-native bundle --entry-file index.js --platform android --dev false --bundle-output ./bundles/android/index.android.bundle",     "bundle_ios": "react-native bundle --entry-file index.js --platform ios --dev false --bundle-output ./bundles/ios/main.jsbundle",     "test": "jest",     "lint": "eslint ."   },   "dependencies": {     "@react-native-community/masked-view": "^0.1.5",     "prop-types": "^15.7.2",     "react": "16.9.0",     "react-native": "0.61.5",     "react-native-gesture-handler": "^1.5.3",     "react-native-linear-gradient": "^2.5.6",     "react-native-safe-area-context": "^0.6.2",     "react-navigation": "^4.0.10",     "react-navigation-stack": "^2.0.8"   },   "devDependencies": {     "@babel/core": "^7.7.7",     "@babel/runtime": "^7.7.7",     "@react-native-community/eslint-config": "^0.0.6",     "babel-jest": "^24.9.0",     "eslint": "^6.8.0",     "jest": "^24.9.0",     "metro-react-native-babel-preset": "^0.57.0",     "react-test-renderer": "16.9.0"   },   "jest": {     "preset": "react-native"   } } 

The project of gradle

include ':app' rootProject.name='Notes'   include ':hermes-engine' project(':hermes-engine').projectDir = new File(rootProject.projectDir, '../node_modules/hermes-engine/android/')  include ':react-native-gesture-handler' project(':react-native-gesture-handler').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-gesture-handler/android')  include ':react-native-linear-gradient' project(':react-native-linear-gradient').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-linear-gradient/android')    // Top-level build file where you can add configuration options common to all sub-projects/modules.  buildscript {     ext.kotlin_version = '1.3.50'     repositories {         google()         jcenter()         mavenLocal()      }     dependencies {         classpath 'com.android.tools.build:gradle:3.4.2'         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"         // NOTE: Do not place your application dependencies here; they belong         // in the individual module build.gradle files     } }  allprojects {     repositories {         google()         jcenter()         mavenLocal()         maven {             // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm             url "$rootDir/../node_modules/react-native/android"         }         maven {             // Android JSC is installed from npm             url("$rootDir/../node_modules/jsc-android/dist")         }     } }  task clean(type: Delete) {     delete rootProject.buildDir }     apply plugin: 'com.android.application'  apply plugin: 'kotlin-android'  apply plugin: 'kotlin-android-extensions'  android {     compileSdkVersion 28     buildToolsVersion "28.0.3"     defaultConfig {         applicationId ""         minSdkVersion 21         targetSdkVersion 28         versionCode 1         versionName "1.0"         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"     }     buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'         }     } }  project.ext.react = [         enableHermes: false, ]  def jscFlavor = 'org.webkit:android-jsc:+' def enableHermes = project.ext.react.get("enableHermes", false)  dependencies {     implementation fileTree(dir: 'libs', include: ['*.jar'])     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"     implementation 'com.android.support:appcompat-v7:28.0.0'     implementation 'com.android.support.constraint:constraint-layout:1.1.3'     testImplementation 'junit:junit:4.12'     androidTestImplementation 'com.android.support.test:runner:1.0.2'     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'     implementation "com.facebook.react:react-native:+"     implementation 'com.android.support:support-annotations:27.1.1'     implementation project(':react-native-gesture-handler')     implementation project(':react-native-linear-gradient')      if (enableHermes) {         implementation project(':hermes-engine')         debugImplementation files(hermesPath + "hermes-debug.aar")         releaseImplementation files(hermesPath + "hermes-release.aar")     } else {         implementation jscFlavor     } } 

This is the code of activity

package com.note  import android.content.Intent import android.net.Uri import android.os.Build import android.os.Bundle import android.provider.Settings import android.util.Log import androidx.appcompat.app.AppCompatActivity import com.facebook.react.ReactInstanceManager import com.facebook.react.ReactRootView import com.facebook.react.common.LifecycleState import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler import com.facebook.react.shell.MainReactPackage import com.facebook.soloader.SoLoader import com.swmansion.gesturehandler.react.RNGestureHandlerPackage import com.BV.LinearGradient.LinearGradientPackage  class ReactActivity : AppCompatActivity(), DefaultHardwareBackBtnHandler {      private val OVERLAY_PERMISSION_REQ_CODE = 1      private lateinit var mReactRootView: ReactRootView     private lateinit var mReactInstanceManager: ReactInstanceManager      override fun onCreate(savedInstanceState: Bundle?) {         super.onCreate(savedInstanceState)         SoLoader.init(this, false)         mReactRootView = ReactRootView(this)         mReactInstanceManager = ReactInstanceManager.builder()             .setApplication(application)             .setCurrentActivity(this)             .setApplication(application)             .setBundleAssetName("aaaaaa.android.bundle")             .addPackage(MainReactPackage())             .addPackage(RNGestureHandlerPackage())             .addPackage(LinearGradientPackage())             .setInitialLifecycleState(LifecycleState.RESUMED)             .build()         // The string here (e.g. "MyReactNativeApp") has to match         // the string in AppRegistry.registerComponent() in index.js         mReactRootView.startReactApplication(mReactInstanceManager, "Notes", null)          setContentView(mReactRootView)          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {             if (!Settings.canDrawOverlays(this)) {                 val intent = Intent(                         Settings.ACTION_MANAGE_OVERLAY_PERMISSION,                         Uri.parse("package:$packageName")                 )                 startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE)             }         }     }      override fun invokeDefaultOnBackPressed() {         super.onBackPressed()     }      override fun onBackPressed() {         if (mReactInstanceManager != null) {             mReactInstanceManager.onBackPressed()         } else {             super.onBackPressed()         }     }      override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {         if (requestCode == OVERLAY_PERMISSION_REQ_CODE) {             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {                 if (!Settings.canDrawOverlays(this)) {                     // SYSTEM_ALERT_WINDOW permission not granted                 }             }         }         mReactInstanceManager?.onActivityResult(this,requestCode, resultCode, data)     } } 

someone knows what is the solution?

Professor Answered on November 9, 2020.
Add Comment

I try to open a bundle, but when the android is running it shows the next message

2020-01-05 23:15:45.366 26210-26210/com.note.principal W/.note.principa: Accessing hidden field Landroid/view/View;->mAccessibilityDelegate:Landroid/view/View$AccessibilityDelegate; (light greylist, reflection) 2020-01-05 23:15:45.470 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: “RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.494 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.502 26210-26242/com.note.principal E/ReactNativeJS: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h 2020-01-05 23:15:45.794 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in RNCSafeAreaView     in Unknown     in Unknown     in n     in Unknown     in Unknown     in C     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.832 26210-26244/com.note.principal E/unknown:ReactNative: Invariant Violation: requireNativeComponent: 

“RNCSafeAreaView” was not found in the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected] 2020-01-05 23:15:45.856 26210-26244/com.note.principal E/AndroidRuntime: FATAL EXCEPTION: mqt_native_modules Process: com.note.principal, PID: 26210 com.facebook.react.common.JavascriptException: Invariant Violation: requireNativeComponent: "RNCSafeAreaView" was not found in 

the UIManager.

This error is located at:     in P     in u     in RCTView     in RCTView     in h, stack: [email protected]:1634 [email protected]:682 [email protected]:70673 [email protected]:70108 [email protected]:67144 [email protected] [email protected]:65839 [email protected] <unknown>@89:25495 [email protected]:3915 [email protected]:25442 [email protected]:25377 [email protected]:64831 [email protected]:87813 [email protected]:90592 [email protected]:541 [email protected]:1305 [email protected]:2287 [email protected]:3685 <unknown>@25:841 [email protected]:2939 [email protected]:813 [email protected]      at com.facebook.react.modules.core.ExceptionsManagerModule.reportException(ExceptionsManagerModule.java:71)     at java.lang.reflect.Method.invoke(Native Method)     at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:371)     at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:150)     at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)     at android.os.Handler.handleCallback(Handler.java:873)     at android.os.Handler.dispatchMessage(Handler.java:99)     at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:26)     at android.os.Looper.loop(Looper.java:193)     at com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run(MessageQueueThreadImpl.java:225)     at java.lang.Thread.run(Thread.java:764) 2020-01-05 23:15:45.862 26210-26244/com.note.principal I/Process: Sending signal. 

PID: 26210 SIG: 9

The package of project is

{   "name": "Notes",   "version": "0.0.1",   "private": true,   "scripts": {     "android": "react-native run-android",     "ios": "react-native run-ios",     "start": "react-native start",     "bundle_android": "react-native bundle --entry-file index.js --platform android --dev false --bundle-output ./bundles/android/index.android.bundle",     "bundle_ios": "react-native bundle --entry-file index.js --platform ios --dev false --bundle-output ./bundles/ios/main.jsbundle",     "test": "jest",     "lint": "eslint ."   },   "dependencies": {     "@react-native-community/masked-view": "^0.1.5",     "prop-types": "^15.7.2",     "react": "16.9.0",     "react-native": "0.61.5",     "react-native-gesture-handler": "^1.5.3",     "react-native-linear-gradient": "^2.5.6",     "react-native-safe-area-context": "^0.6.2",     "react-navigation": "^4.0.10",     "react-navigation-stack": "^2.0.8"   },   "devDependencies": {     "@babel/core": "^7.7.7",     "@babel/runtime": "^7.7.7",     "@react-native-community/eslint-config": "^0.0.6",     "babel-jest": "^24.9.0",     "eslint": "^6.8.0",     "jest": "^24.9.0",     "metro-react-native-babel-preset": "^0.57.0",     "react-test-renderer": "16.9.0"   },   "jest": {     "preset": "react-native"   } } 

The project of gradle

include ':app' rootProject.name='Notes'   include ':hermes-engine' project(':hermes-engine').projectDir = new File(rootProject.projectDir, '../node_modules/hermes-engine/android/')  include ':react-native-gesture-handler' project(':react-native-gesture-handler').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-gesture-handler/android')  include ':react-native-linear-gradient' project(':react-native-linear-gradient').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-linear-gradient/android')    // Top-level build file where you can add configuration options common to all sub-projects/modules.  buildscript {     ext.kotlin_version = '1.3.50'     repositories {         google()         jcenter()         mavenLocal()      }     dependencies {         classpath 'com.android.tools.build:gradle:3.4.2'         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"         // NOTE: Do not place your application dependencies here; they belong         // in the individual module build.gradle files     } }  allprojects {     repositories {         google()         jcenter()         mavenLocal()         maven {             // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm             url "$rootDir/../node_modules/react-native/android"         }         maven {             // Android JSC is installed from npm             url("$rootDir/../node_modules/jsc-android/dist")         }     } }  task clean(type: Delete) {     delete rootProject.buildDir }     apply plugin: 'com.android.application'  apply plugin: 'kotlin-android'  apply plugin: 'kotlin-android-extensions'  android {     compileSdkVersion 28     buildToolsVersion "28.0.3"     defaultConfig {         applicationId ""         minSdkVersion 21         targetSdkVersion 28         versionCode 1         versionName "1.0"         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"     }     buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'         }     } }  project.ext.react = [         enableHermes: false, ]  def jscFlavor = 'org.webkit:android-jsc:+' def enableHermes = project.ext.react.get("enableHermes", false)  dependencies {     implementation fileTree(dir: 'libs', include: ['*.jar'])     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"     implementation 'com.android.support:appcompat-v7:28.0.0'     implementation 'com.android.support.constraint:constraint-layout:1.1.3'     testImplementation 'junit:junit:4.12'     androidTestImplementation 'com.android.support.test:runner:1.0.2'     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'     implementation "com.facebook.react:react-native:+"     implementation 'com.android.support:support-annotations:27.1.1'     implementation project(':react-native-gesture-handler')     implementation project(':react-native-linear-gradient')      if (enableHermes) {         implementation project(':hermes-engine')         debugImplementation files(hermesPath + "hermes-debug.aar")         releaseImplementation files(hermesPath + "hermes-release.aar")     } else {         implementation jscFlavor     } } 

This is the code of activity

package com.note  import android.content.Intent import android.net.Uri import android.os.Build import android.os.Bundle import android.provider.Settings import android.util.Log import androidx.appcompat.app.AppCompatActivity import com.facebook.react.ReactInstanceManager import com.facebook.react.ReactRootView import com.facebook.react.common.LifecycleState import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler import com.facebook.react.shell.MainReactPackage import com.facebook.soloader.SoLoader import com.swmansion.gesturehandler.react.RNGestureHandlerPackage import com.BV.LinearGradient.LinearGradientPackage  class ReactActivity : AppCompatActivity(), DefaultHardwareBackBtnHandler {      private val OVERLAY_PERMISSION_REQ_CODE = 1      private lateinit var mReactRootView: ReactRootView     private lateinit var mReactInstanceManager: ReactInstanceManager      override fun onCreate(savedInstanceState: Bundle?) {         super.onCreate(savedInstanceState)         SoLoader.init(this, false)         mReactRootView = ReactRootView(this)         mReactInstanceManager = ReactInstanceManager.builder()             .setApplication(application)             .setCurrentActivity(this)             .setApplication(application)             .setBundleAssetName("aaaaaa.android.bundle")             .addPackage(MainReactPackage())             .addPackage(RNGestureHandlerPackage())             .addPackage(LinearGradientPackage())             .setInitialLifecycleState(LifecycleState.RESUMED)             .build()         // The string here (e.g. "MyReactNativeApp") has to match         // the string in AppRegistry.registerComponent() in index.js         mReactRootView.startReactApplication(mReactInstanceManager, "Notes", null)          setContentView(mReactRootView)          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {             if (!Settings.canDrawOverlays(this)) {                 val intent = Intent(                         Settings.ACTION_MANAGE_OVERLAY_PERMISSION,                         Uri.parse("package:$packageName")                 )                 startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE)             }         }     }      override fun invokeDefaultOnBackPressed() {         super.onBackPressed()     }      override fun onBackPressed() {         if (mReactInstanceManager != null) {             mReactInstanceManager.onBackPressed()         } else {             super.onBackPressed()         }     }      override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {         if (requestCode == OVERLAY_PERMISSION_REQ_CODE) {             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {                 if (!Settings.canDrawOverlays(this)) {                     // SYSTEM_ALERT_WINDOW permission not granted                 }             }         }         mReactInstanceManager?.onActivityResult(this,requestCode, resultCode, data)     } } 

someone knows what is the solution?

Professor Answered on November 9, 2020.
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