Question

新手在这里。

我开发了一个使用firebase数据库和android studio的聊天应用程序，并使用firebase功能以及firebase消息传递服务在用户收到新消息时向他们发送通知。一切正常。我唯一的问题是，当两个用户已经聊天（ChatActivity已在运行）时，我想停止通知服务。

我到处都是，但是找不到解决方案预先感谢！

@Override
public void onMessageReceived( RemoteMessage remoteMessage ) {


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




                super.onMessageReceived ( remoteMessage );


                String notification_title = remoteMessage.getData ().get ( "title" );
                String notification_message = remoteMessage.getData ().get ( "body" );


                String click_action = remoteMessage.getData ().get ( "click_action" );
                String visit_user_id = remoteMessage.getData ().get ( "from_user_id" );
                String visit_user_name = remoteMessage.getData ().get ( "userName" );

                Uri alarmSound = Uri.parse ("android.resource://"+getApplicationContext ().getPackageName()+"/"+R.raw.dog  );

                Intent resultIntent = new Intent ( click_action );
                resultIntent.putExtra ( "visit_user_id", visit_user_id );
                resultIntent.putExtra ( "userName", visit_user_name );

                PendingIntent resultPendingIntent =
                        PendingIntent.getActivity (
                                this,
                                0,
                                resultIntent,
                                PendingIntent.FLAG_UPDATE_CURRENT
                        );


                OreoNotification oreoNotification = new OreoNotification ( this );

                Notification.Builder builder = oreoNotification.getOreoNotification ( notification_title, notification_message,resultPendingIntent ).setSmallIcon ( R.drawable.finalpawslogofour )
                        .setVibrate ( new long[]{500, 500} ).setAutoCancel ( true ).setSound ( alarmSound );


                int mNotificationId = ( int ) System.currentTimeMillis ();



                oreoNotification.getManager().notify ( mNotificationId, builder.build ());


        }else{


                super.onMessageReceived ( remoteMessage );


                String notification_title = remoteMessage.getData ().get ( "title" );
                String notification_message = remoteMessage.getData ().get ( "body" );


                String click_action = remoteMessage.getData ().get ( "click_action" );
                String visit_user_id = remoteMessage.getData ().get ( "from_user_id" );
                String visit_user_name = remoteMessage.getData ().get ( "userName" );

                Uri alarmSound = Uri.parse ("android.resource://"+getApplicationContext ().getPackageName()+"/"+R.raw.dog  );


                NotificationCompat.Builder mBuilder = new NotificationCompat.Builder ( this ).setSmallIcon ( R.drawable.finalpawslogofour ).setContentTitle ( notification_title ).setContentText ( notification_message )
                        .setVibrate ( new long[]{500, 500} ).setAutoCancel ( true ).setSound ( alarmSound );



                Intent resultIntent = new Intent ( click_action );
                resultIntent.putExtra ( "visit_user_id", visit_user_id );
                resultIntent.putExtra ( "userName", visit_user_name );


                PendingIntent resultPendingIntent =
                        PendingIntent.getActivity (
                                this,
                                0,
                                resultIntent,
                                PendingIntent.FLAG_UPDATE_CURRENT
                        );

                mBuilder.setContentIntent ( resultPendingIntent );


                int mNotificationId = ( int ) System.currentTimeMillis ();

                NotificationManager mNotifyMgr = ( NotificationManager ) getSystemService ( NOTIFICATION_SERVICE );

                mNotifyMgr.notify ( mNotificationId, mBuilder.build ());






        }






}

Answer 1

正如Rabbit here先生回答的那样，您可以在扩展FirebaseMessagingService的类中实现isAppIsBackgrounded（）方法：

private boolean isAppIsInBackground(Context context) {
            boolean isInBackground = true;

            ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
            if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT_WATCH) {
                List<ActivityManager.RunningAppProcessInfo> runningProcesses = am.getRunningAppProcesses();
                for (ActivityManager.RunningAppProcessInfo processInfo : runningProcesses) {
                    if (processInfo.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
                        for (String activeProcess : processInfo.pkgList) {
                            if (activeProcess.equals(context.getPackageName())) {
                                isInBackground = false;
                            }
                        }
                    }
                }
            }
            else
            {
                List<ActivityManager.RunningTaskInfo> taskInfo = am.getRunningTasks(1);
                ComponentName componentInfo = taskInfo.get(0).topActivity;
                if (componentInfo.getPackageName().equals(context.getPackageName())) {
                    isInBackground = false;
                }
            }
            return isInBackground;
        }

另一种方法（仍是粗略的方法）是使用SharedPreferences来确定ChatActivity是否处于活动状态。

聊天应用程序-聊天活动处于前台时如何停止推送通知？

1 个答案: