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React Native app shows error when clicked on debug in Android emulator

Attempt to invoke interface method java.lang.String .facebook.react.bridge.Cat alystInstance.getSourceURL('on a null object reference

below are error screenshots

Emulator screenshot:

Debugger screenshot:

When clicked on reload app crashes and lost connection to debugger.

Tried uninstalling and reinstalling apk in emulator and cd android ./gradlew clean.

Still same error.

React Native app shows error when clicked on debug in Android emulator

Attempt to invoke interface method java.lang.String .facebook.react.bridge.Cat alystInstance.getSourceURL('on a null object reference

below are error screenshots

Emulator screenshot:

Debugger screenshot:

When clicked on reload app crashes and lost connection to debugger.

Tried uninstalling and reinstalling apk in emulator and cd android ./gradlew clean.

Still same error.

  • javascript
  • android
  • react-native
  • facebook
Share edited Jan 13, 2022 at 7:16 Sudharsan Palanisamy asked Jan 13, 2022 at 7:04 Sudharsan PalanisamySudharsan Palanisamy 1331 gold badge1 silver badge8 bronze badges 4
  • If you don't turn on the debugger, there will be an error, right? – hong developer Commented Jan 13, 2022 at 7:23
  • Did you installed react-native-reanimated? – ZFloc Technologies Commented Jan 13, 2022 at 8:29
  • yes - "react-native-reanimated": "^2.2.0", @thanhal – Sudharsan Palanisamy Commented Jan 13, 2022 at 10:36
  • Then see my answer below – ZFloc Technologies Commented Jan 13, 2022 at 10:37
Add a ment  | 

1 Answer 1

Reset to default 5

I have faced same issue and it was due to the 'react-native-reanimated' package (It's mentioned in their documentation that remote debugging is no longer possible for react-native-reanimated : React Native Reanimated Known problems and limitations) and the solution is to use flipper to debug : Debugging React Native apps with Flipper

本文标签： javascriptWhy does React Native app crash when clicking on debug in Android emulatorStack Overflow

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