Android 从FireBase云消息中单击通知后恢复活动

我在我的原生安卓应用程序上集成了

fire-Base-FCM

。目前我有3个活动，

splashscreenactivivtiy[Launcher activity]，ActivityB，Activityc

。当前，当我打开

Activityc

并单击设备的Home按钮时，应用程序将通过

Activityc

进入后台。因此，当应用程序在后台运行时，当通知托盘上的FCM发出通知时，在录制通知时，我必须使用

前台中的
Activityc
恢复应用程序。当前，当应用程序处于后台并单击通知时，它将启动我的活动，即我的
splashScreenActivity[Launcher activity]
。如何避免在后台启动应用程序

 private void showNotificationView(String title, String message, RemoteMessage remoteMessage) {
        m_notifyId++;
        if (m_notifyId == Integer.MAX_VALUE) 
            m_notifyId = 1;
     
        intent = new Intent(this, Activityc.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
                | Intent.FLAG_ACTIVITY_CLEAR_TASK);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, m_notifyId, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        String channelId = "com.test.message";
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this, channelId)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentTitle(remoteMessage.getNotification().getTitle())
                .setContentText(remoteMessage.getNotification().getBody())
                .setAutoCancel(true)
                .setPriority(NotificationCompat.PRIORITY_HIGH)
                .setContentIntent(pendingIntent);
        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(channelId, "com.test.message", NotificationManager.IMPORTANCE_DEFAULT);
            manager.createNotificationChannel(channel);
        manager.notify(m_notifyId, builder.build());
    }

清单文件：

    <activity
    android:name=".activities.SplashScreen"
    android:launchMode="singleTask">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</activity>
<activity
    android:name=".activities.Activityc"
    android:label="@string/app_name"
    android:screenOrientation="portrait">
</activity>
<activity
    android:name=".activities.ActivityB"
    android:label="@string/app_name"
    android:resizeableActivity="false"
    android:screenOrientation="portrait" />

有人能对此提出建议吗？？