Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent.

google play console 들어가 보니 난리났다..

android 버전이 12이상인 기기에서 백그라운드 알림 이벤트 수신시 아래와 같이 에러가 났다.

Exception java.lang.IllegalArgumentException: com.bizentro.uniportal: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent.
Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies or bubbles.
  at android.app.PendingIntent.checkFlags (PendingIntent.java:382)
  at android.app.PendingIntent.getActivityAsUser (PendingIntent.java:465)
  at android.app.PendingIntent.getActivity (PendingIntent.java:451)
  at android.app.PendingIntent.getActivity (PendingIntent.java:415)
  at com.google.firebase.messaging.CommonNotificationBuilder.createContentIntent (com.google.firebase:firebase-messaging@@21.0.1:5)
  at com.google.firebase.messaging.CommonNotificationBuilder.createNotificationInfo (com.google.firebase:firebase-messaging@@21.0.1:20)
  at com.google.firebase.messaging.CommonNotificationBuilder.createNotificationInfo (com.google.firebase:firebase-messaging@@21.0.1:6)
  at com.google.firebase.messaging.DisplayNotification.handleNotification (com.google.firebase:firebase-messaging@@21.0.1:4)
  at com.google.firebase.messaging.FirebaseMessagingService.dispatchMessage (com.google.firebase:firebase-messaging@@21.0.1:8)
  at com.google.firebase.messaging.FirebaseMessagingService.passMessageIntentToSdk (com.google.firebase:firebase-messaging@@21.0.1:8)
  at com.google.firebase.messaging.FirebaseMessagingService.handleMessageIntent (com.google.firebase:firebase-messaging@@21.0.1:3)
  at com.google.firebase.messaging.FirebaseMessagingService.handleIntent (com.google.firebase:firebase-messaging@@21.0.1:3)
  at com.google.firebase.messaging.EnhancedIntentService.lambda$processIntent$0$EnhancedIntentService
  at com.google.firebase.messaging.EnhancedIntentService$$Lambda$0.run
  at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1167)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:641)
  at com.google.android.gms.common.util.concurrent.zza.run
  at java.lang.Thread.run (Thread.java:920)

PendingIntent.getActivity()에 분명  PendingIntent.FLAG_IMMUTABLE 추가했는데..

public class MyFirebaseMessagingService extends FirebaseMessagingService {

...

   /**
     * 서버로부터 수신받은 메시지를 보여준다.
     * @param remoteMessage
     */
    private void sendNotification(Context context, RemoteMessage remoteMessage) {
        ...
		
        PendingIntent contentIntent = PendingIntent.getActivity(this, notiId, mainWeb , PendingIntent.FLAG_IMMUTABLE);

    }    
 
 }

 

구글링 후 아래와 같이 해결했음.

 

build.gradle (Module)의 dependencies { }  부분에서 아래 부분 수정함

dependencies {
    ...
    //최신버전으로 수정 (기존 1.0.0)
    implementation 'androidx.appcompat:appcompat:1.5.1'

    
	//최신 버전으로 변경(기존 16, 17버전대)
    implementation 'com.google.firebase:firebase-core:21.1.1'
    implementation 'com.google.firebase:firebase-iid:21.1.0'
    implementation 'com.google.firebase:firebase-messaging:23.1.1'
    
    //추가
    implementation 'androidx.work:work-runtime:2.7.1'
    
    ...
}