Question

我正在使用Firebase云消息传递来获取推送通知。运行正常。但是现在，只要应用程序收到通知数据，它就会崩溃，甚至不会显示崩溃的行号。

我已经检查了我的另一个应用程序中的FirebaseMessagingService类的代码，该应用程序中的通知服务运行良好。

它在日志中显示以下错误

E/AndroidRuntime: FATAL EXCEPTION: Firebase-WrappedFirebaseMessagingService
Process: net.eazypg.eazypgtenant, PID: 16823
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference
    at android.content.ContextWrapper.getPackageName(ContextWrapper.java:135)
    at com.google.firebase.messaging.zzb.<init>(Unknown Source:5)
    at com.google.firebase.messaging.FirebaseMessagingService.zzd(Unknown Source:58)
    at com.google.firebase.iid.zzb.run(Unknown Source:2)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
    at com.google.android.gms.common.util.concurrent.zza.run(Unknown Source:6)
    at java.lang.Thread.run(Thread.java:764)

我的Firebase Messeging类是

public class MyFirebaseMessagingService extends FirebaseMessagingService {

private NotificationManager notifManager;
private NotificationChannel mChannel;

FirebaseAuth firebaseAuth;
FirebaseDatabase firebaseDatabase;
FirebaseUser firebaseUser;
DatabaseReference databaseReference;

@Override
public void onNewToken(String s) {
    super.onNewToken(s);

    sendRegistrationToServer(s);

}

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    super.onMessageReceived(remoteMessage);

    Map<String, String> data = remoteMessage.getData();

    pushNotification(data.get("title"),
                        data.get("body"),
                        data.get("imageUrl"),
                        data.get("click_action"));

}

private void pushNotification(String title, String body, String imageUrl, String clickAction) {

    Intent intent;
    PendingIntent pendingIntent;
    NotificationCompat.Builder builder;

    if (notifManager == null) {
        notifManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    }

    intent = new Intent(clickAction);
    intent.setAction(Long.toString(System.currentTimeMillis()));

    int uniqueInt = (int) (System.currentTimeMillis() & 0xfffffff);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {


        if (mChannel == null) {
            NotificationChannel mChannel = new NotificationChannel("0", title, NotificationManager.IMPORTANCE_DEFAULT);
            mChannel.setDescription (body);
            mChannel.enableVibration (true);
            mChannel.setVibrationPattern (new long[] {100, 200, 300, 400, 300, 200, 400});
            notifManager.createNotificationChannel (mChannel);
        }

        builder = new NotificationCompat.Builder (this, "0");

        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
        pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
        builder.setContentTitle(title)  // flare_icon_30

                .setSmallIcon(R.drawable.notification)
                .setContentText(body)
                .setDefaults(Notification.DEFAULT_ALL)
                .setAutoCancel(true)
                .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.icon_logo))
                .setBadgeIconType(R.drawable.icon_logo)
                .setContentIntent(pendingIntent)
                .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
                .setVibrate(new long[]{100, 200, 300, 400, 300, 200, 100, 300});

    } else {

        builder = new NotificationCompat.Builder(this, "0");

        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
        pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
        builder.setContentTitle(title)
                .setSmallIcon(R.drawable.icon_logo) // required
                .setContentText(body)  // required
                .setDefaults(Notification.DEFAULT_ALL)
                .setAutoCancel(true)
                .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.icon_logo))
                .setContentIntent(pendingIntent)
                .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
                .setVibrate(new long[]{100, 200, 300, 400, 300, 200, 100, 300})
                .setPriority(Notification.PRIORITY_HIGH);
    }

    Notification notification = builder.build ();
    notifManager.notify (0, notification);

}

} 我已经初始化了清单文件中所需的所有内容

<meta-data
        android:name="com.google.firebase.messaging.default_notification_channel_id"
        android:value="@string/default_notification_channel_id" />

    <service android:name=".MyFirebaseMessagingService">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT" />
        </intent-filter>
    </service>

    <meta-data
        android:name="com.google.firebase.messaging.default_notification_icon"
        android:resource="@mipmap/ic_launcher" />
    <meta-data
        android:name="com.google.firebase.messaging.default_notification_color"
        android:resource="@color/colorAccent" />

非常感谢您！

Answer 1

尝试使用最新的Firebase消息更新您的gradle

implementation 'com.google.firebase:firebase-messaging:17.5.0'

这是一个类似的问题Application crash upon receiving a notification

每当通过FCM收到通知时，我的应用程序就会崩溃

1 个答案: