An error occurs when reciving SMS in background or in foreground causes the app to crash about telephony

[shounakmulay]

Hey @Mohanedy98

Would be great if you could provide me with a reproducible example that I can run on my end and investigate the error.

[shounakmulay]

Closing this for now. Feel free to reopen.

[yolowex]

I have the same problem.
It happened without any particular reason.
all my previous commits too.
I don't know why
here is full details on my problem
my flutter doctor is ok too

D/AndroidRuntime(19650): Shutting down VM
E/AndroidRuntime(19650): FATAL EXCEPTION: main
E/AndroidRuntime(19650): Process: com.irstake.webviewApp, PID: 19650
E/AndroidRuntime(19650): java.lang.RuntimeException: Unable to start receiver com.shounakmulay.telephony.sms.IncomingSmsReceiver: java.lang.NullPointerException: Attempt to read from field 'java.lang.String io.flutter.view.FlutterCallbackInformation.callbackLibraryPath' on a null object reference in method 'java.lang.String io.flutter.embedding.engine.dart.DartExecutor$DartCallback.toString()'
E/AndroidRuntime(19650): 	at android.app.ActivityThread.handleReceiver(ActivityThread.java:4770)
E/AndroidRuntime(19650): 	at android.app.ActivityThread.access$1700(ActivityThread.java:310)
E/AndroidRuntime(19650): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2292)
E/AndroidRuntime(19650): 	at android.os.Handler.dispatchMessage(Handler.java:106)
E/AndroidRuntime(19650): 	at android.os.Looper.loopOnce(Looper.java:226)
E/AndroidRuntime(19650): 	at android.os.Looper.loop(Looper.java:313)
E/AndroidRuntime(19650): 	at android.app.ActivityThread.main(ActivityThread.java:8663)
E/AndroidRuntime(19650): 	at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(19650): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:571)
E/AndroidRuntime(19650): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1135)
E/AndroidRuntime(19650): Caused by: java.lang.NullPointerException: Attempt to read from field 'java.lang.String io.flutter.view.FlutterCallbackInformation.callbackLibraryPath' on a null object reference in method 'java.lang.String io.flutter.embedding.engine.dart.DartExecutor$DartCallback.toString()'
E/AndroidRuntime(19650): 	at io.flutter.embedding.engine.dart.DartExecutor$DartCallback.toString(DartExecutor.java:421)
E/AndroidRuntime(19650): 	at java.lang.String.valueOf(String.java:3657)
E/AndroidRuntime(19650): 	at java.lang.StringBuilder.append(StringBuilder.java:132)
E/AndroidRuntime(19650): 	at io.flutter.embedding.engine.dart.DartExecutor.executeDartCallback(DartExecutor.java:175)
E/AndroidRuntime(19650): 	at com.shounakmulay.telephony.sms.IncomingSmsHandler.startBackgroundIsolate(IncomingSmsHandler.kt:154)
E/AndroidRuntime(19650): 	at com.shounakmulay.telephony.sms.IncomingSmsReceiver.processInBackground(IncomingSmsHandler.kt:95)
E/AndroidRuntime(19650): 	at com.shounakmulay.telephony.sms.IncomingSmsReceiver.processIncomingSms(IncomingSmsHandler.kt:82)
E/AndroidRuntime(19650): 	at com.shounakmulay.telephony.sms.IncomingSmsReceiver.onReceive(IncomingSmsHandler.kt:50)
E/AndroidRuntime(19650): 	at android.app.ActivityThread.handleReceiver(ActivityThread.java:4761)
E/AndroidRuntime(19650): 	... 9 more

I get this error whenever an sms message is recieved.
it happens in this function, the stack trace does not point to anything in the function, even if the function is empty, I still get this error.

public class SmsListenerService extends Service {
  // this is a java android service that I'm running, it is a foreground service.
  ...
private void handleSmsReceived(Intent intent) {
        // problem happens here
        // whenever an sms message is received this method is called
        // the stack trace doesn't point to this nor anything in my code
    }
  ...
}

Important note

please note that I didn't encounter this error yesterday at all!
I tried falling back to previous commits and check if the error is still there, and the error is everywhere!
even on the commits that I know are stable and worked.

so in short, something weird happened. I didn't touch my project since yesterday and it is ruined, and I don't know why, and all of the commits are ruined too.

What the hell is going on?

Edit:
I tried upgrading flutter but no help, I tried flutter clean but nothing changed, this happend suddenly, my code worked,
i didn't change anything, it showed up with no reason

flutter doctor just in case:

[✓] Flutter (Channel stable, 3.16.5, on Kali GNU/Linux Rolling 6.4.0-kali3-amd64, locale en_US.UTF-8)
    • Flutter version 3.16.5 on channel stable at /home/yolo/snap/flutter/common/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 78666c8dc5 (3 weeks ago), 2023-12-19 16:14:14 -0800
    • Engine revision 3f3e560236
    • Dart version 3.2.3
    • DevTools version 2.28.4

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
    • Android SDK at /home/yolo/Android/Sdk
    • Platform android-33, build-tools 33.0.2
    • Java binary at: /home/yolo/android-studio-chipmunk/jre/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)
    • All Android licenses accepted.

[✗] Chrome - develop for the web (Cannot find Chrome executable at google-chrome)
    ! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.

[✓] Linux toolchain - develop for Linux desktop
    • clang version 10.0.0-4ubuntu1
    • cmake version 3.16.3
    • ninja version 1.10.0
    • pkg-config version 0.29.1

[✓] Android Studio (version 3.0)
    • Android Studio at /home/yolo/android-studio-old
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version openjdk version "1.8.0_152-release"

[✓] Android Studio (version 2021.2)
    • Android Studio at /home/yolo/android-studio-chipmunk
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version openjdk version "11.0.12" 2021-07-20

[✓] IntelliJ IDEA Community Edition (version 2022.1)
    • IntelliJ at /home/yolo/.local/share/JetBrains/Toolbox/apps/IDEA-C/ch-0/221.6008.13
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart

[✓] IntelliJ IDEA Community Edition (version 2023.1)
    • IntelliJ at /home/yolo/.local/share/JetBrains/Toolbox/apps/IDEA-C/ch-0/231.9011.34
    • Flutter plugin version 74.0.4
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart

[✓] VS Code (version 1.81.1)
    • VS Code at /usr/share/code
    • Flutter extension can be installed from:
      🔨 https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[✓] Connected device (2 available)
    • SM A225F (mobile) • R58R918KD3B • android-arm64 • Android 12 (API 31)
    • Linux (desktop)   • linux       • linux-x64     • Kali GNU/Linux Rolling 6.4.0-kali3-amd64

[✓] Network resources
    • All expected network resources are available.

! Doctor found issues in 1 category.

[yolowex]

Hey @Mohanedy98

Would be great if you could provide me with a reproducible example that I can run on my end and investigate the error.

if you want I can send you a copy of my app, so you can investigate

package com.irstake.webviewApp;

import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Build;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;

import androidx.core.app.NotificationCompat;

public class SmsListenerService extends Service {

    private static final String TAG = "SmsService";
    private SmsReceiver smsReceiver;
    private static final int NOTIFICATION_ID = 123;

    @Override
    public void onCreate() {
        super.onCreate();

        smsReceiver = new SmsReceiver();
        IntentFilter filter = new IntentFilter("android.provider.Telephony.SMS_RECEIVED");
        registerReceiver(smsReceiver, filter);

        startForeground(NOTIFICATION_ID, createNotification());
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        // Service logic goes here
        return START_STICKY;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        unregisterReceiver(smsReceiver);
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    private Notification createNotification() {
        // Create a notification for the foreground service
        // Customize this method to create a notification that suits your app
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "channel")
                .setContentTitle("text")
                .setSmallIcon(android.R.drawable.ic_dialog_info)
                .setContentText("text")
                .setPriority(NotificationCompat.PRIORITY_HIGH)
                .setVisibility(NotificationCompat.VISIBILITY_PUBLIC);

        Notification notification =  builder.build();
        Log.i(TAG,"notification " + notification);
        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(NOTIFICATION_ID, notification);
        return notification;
    }

    public class SmsReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {
            Bundle bundle = intent.getExtras();

            if (bundle != null) {
                Object[] pdus = (Object[]) bundle.get("pdus");

                if (pdus != null) {
                    for (Object pdu : pdus) {
                    }
                }
            }
        }
    }
}

I tried using something other than telephony.
but I still get the telephony error :/
the same thing.
but pay attention to my important note up there, I think the problem is something external.
because I am Sure that my project ran smoothly yesterday. (I changed nothing)

[ashwin-dailype]

I'm facing the same crash. Linking some relevant data below

Stack trace

Fatal Exception: java.lang.RuntimeException: Unable to start receiver com.shounakmulay.telephony.sms.IncomingSmsReceiver: java.lang.NullPointerException: Attempt to read from field 'java.lang.String io.flutter.view.FlutterCallbackInformation.callbackLibraryPath' on a null object reference in method 'java.lang.String io.flutter.embedding.engine.dart.DartExecutor$DartCallback.toString()'
       at android.app.ActivityThread.handleReceiver(ActivityThread.java:4903)
       at android.app.ActivityThread.-$$Nest$mhandleReceiver()
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2420)
       at android.os.Handler.dispatchMessage(Handler.java:106)
       at android.os.Looper.loopOnce(Looper.java:226)
       at android.os.Looper.loop(Looper.java:313)
       at android.app.ActivityThread.main(ActivityThread.java:8779)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:604)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1067)

Relevant code snippet

@pragma('vm:entry-point')
backgroundMessageHandler(message) async {
  String? smsUrl;
  String? env = await PreferencesHelper.prefGetString(PreferencesHelper.env);
  try {
    smsUrl =
        (await PreferencesHelper.prefGetString(PreferencesHelper.ingestUrl)) +
            Endpoints.ingestSms;
  } catch (e, s) {
    debugPrint('Error in bg msg handler: $e');
    debugPrintStack(stackTrace: s);
  }
  syncSmsPeriodic(
      smsUrl, env);
}

@pragma('vm:entry-point')
registerBgSmsListener() async {
  await PreferencesHelper.prefSetString(PreferencesHelper.ingestUrl, ingestUrl);
  final Telephony telephony = Telephony.instance;
  telephony.listenIncomingSms(
      onNewMessage: (message) {
        backgroundMessageHandler(message);
      },
      onBackgroundMessage: backgroundMessageHandler);
}

Crashlytics stats of my app