Handling exceptions in Android release APK

[harshada-bhanose]

Hello,

I am able to catch JS as well as Native exceptions in Debug APK. But the exceptions are not caught in Release APK. Can you please suggest I am missing anything? Here is my code:

import { AppRegistry, Alert } from 'react-native';
import App from './App';
import {setJSExceptionHandler, setNativeExceptionHandler} from 'react-native-exception-handler';
import RNRestart from 'react-native-restart';

const reporter = (error) => {
    console.log(error); 
};

const errorHandler = (e, isFatal) => {
    if (isFatal) {
      reporter(e);
      Alert.alert(
          'Unexpected error occurred',
          'Error: ${(isFatal) ? 'Fatal:' : ''} ${e.name} ${e.message}Please close the app and start again!',
        [{
          text: 'Restart',
          onPress: () => {
            RNRestart.Restart();
          }
        }]
      );
    } else {
      console.log(e); 
    }
  };
setJSExceptionHandler(errorHandler, true);
setNativeExceptionHandler((errorString => {
  console.log('Native exception !!!');
}), true);

[a7ul]

@harshada-bhanose Can you please explain what do you mean by Debug Apk . Could give me a bit more context on how you are generating the debug apk and release apk. ?

[harshada-bhanose]

By Debug APK I mean the unsigned app-debug.apk file generated in \android\app\build\outputs\apk\debug folder when we have the __DEV__ flag on. Release APK is the signed bundled APK generated using command ./gradlew assembleRelease

[a7ul]

Alright how are you simulating the errors ?

[harshada-bhanose]

JS exception is simulated by calling an undefined function. Native exception is simulated by a String operation causing OutOfMemory error. This one is genuine and we are trying to identify the cause.

[jsu93]

Can't send data to server in setNativeExceptionHandler that caused by rn-test-exception-handler module, but did in setJSExceptionHandler that caused by undefined function call,

The two exception makers are in two buttons onPress

[vsvanshi]

Same case with me, I am trying to send data to server on a Native Exception, but that part is not executing. However, i have put console logs at the starting and end of the native exception handler and both statements are getting executed. Glad to give you more information, if you need

[a7ul]

Okay .. Do you see the native exception handler UI showing up? @vsvanshi

[vsvanshi]

@master-atul : Yes! Eeverything else works fine, the code written in the callback other than the api executes, the native exception handler UI also shows up. Only the api is not getting triggered.

[molmutius]

@jsu93 and @vsvanshi, I'm having the same issue: On a native exception I see the Error Screen and I also can log the native excpetion just fine in JS. But when I try to send it to a server afterwards nothing happens. I've made an example repo here: https://github.com/molmutius/react-native-crashtest which uses countly to send data to a server. I've also already asked the guys over at the countly slack channel and they pointed me in this direction.

@master-atul, maybe the repo I posted above helps with identifying this issue. Let me knwo, if you need support.

[a7ul]

@molmutius I ll check it out in the evening and lets see if we can find anything 👍

[Navidhp]

@master-atul I also have this problem , cannot send data to server in release mode

[farahty]

any update @master-atul

[bartoszboruta]

@master-atul still not fixed?

[OmarBasem]

Same issue

[W1nstar]

Still the same issue on 2022, somehow js code is executed on NativeErrorHandler, but any kind of http request does not work.