当应用程序处于前台状态时，FCM工作正常并且设备上发出通知，当通知时，它会重定向到我指定的Activity，因此它正常工作。
但我的挑战是当应用程序处于后台状态时通知到来时，当点击时，它会重定向到默认活动，但我想导航到指定的活动。
这是MyFirebaseMessagingService类：
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = "MyFirebaseMsgService";
private String title, messageBody;
/**
* Called when message is received.
*
* @param remoteMessage Object representing the message received from Firebase Cloud Messaging.
*/
// [START receive_message]
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
// [START_EXCLUDE]
if (remoteMessage.getData().size() > 0) {
Log.d(TAG, "Message data payload: " + remoteMessage.getData());
if (remoteMessage.getData() != null && remoteMessage.getData().size() > 0) {
title = remoteMessage.getData().get("title");
if (TextUtils.isEmpty(title)) title = "Bocawest";
messageBody = remoteMessage.getData().get("message");
}
handleNow();
}
// Check if message contains a notification payload.
if (remoteMessage.getNotification() != null) {
Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
sendNotification(remoteMessage.getNotification().getTitle(), remoteMessage.getNotification().getBody());
}
// Also if you intend on generating your own notifications as a result of a received FCM
// message, here is where that should be initiated. See sendNotification method below.
if (!TextUtils.isEmpty(messageBody))
sendNotification(title, messageBody);
//sendNotification(remoteMessage.getNotification().getBody());
Intent intent = new Intent();
intent.setAction("com.android.bocawest");
sendBroadcast(intent);
}
// [END receive_message]
/**
* Handle time allotted to BroadcastReceivers.
*/
private void handleNow() {
Log.d(TAG, "Short lived task is done.");
}
/**
* Create and show a simple notification containing the received FCM message.
*
* @param messageBody FCM message body received.
*/
private void sendNotification(String title, String messageBody) {
PendingIntent pendingIntent;
if (SharedPreference.getBoolean(getApplicationContext(), getApplicationContext().getResources().getString(R.string.sp_isLoginIN))) {
Intent intent = new Intent(this, NotificationsActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
PendingIntent.FLAG_UPDATE_CURRENT);
} else {
Intent intent = new Intent(this, LoginActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
PendingIntent.FLAG_UPDATE_CURRENT);
}
String channelId = getString(R.string.default_notification_channel_id);
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder =
new NotificationCompat.Builder(this, channelId)
.setSmallIcon(R.drawable.ic_launcher)
.setContentTitle(title)
.setContentText(messageBody)
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// Since android Oreo notification channel is needed.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel(channelId,
"Bocawest",
NotificationManager.IMPORTANCE_DEFAULT);
notificationManager.createNotificationChannel(channel);
}
notificationManager.notify(0, notificationBuilder.build());
}
}
注意：NotificationsActivity是我指定的活动。 HomeActivity是默认活动
我知道有很多类似的问题，但我没有找到任何特定于我的用例。请帮我。
@Laxman parlapelly根据Firebase standered，当您的应用在后台接收通知并且用户点击通知时，它将仅打开默认活动。如果要打开指定的活动，则必须仅通过默认活动。
例如，在用户点击通知的情况下，它将打开您的Home活动，并从HomeActivity的oncreate方法开启NotificationsActivity（以及需要捆绑包）
什么时候
当应用程序处于后台时会触发通知，然后将调用HomeActivity的onCreate（）方法，以便您可以编写代码来打开通知活动
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
animLay = findViewById(R.id.root_lay_la);
Intent intent = new Intent(this,NotificationActivity.class);
//intent.putExtra("KEY",getIntent().getStringExtra("data")); if u need to pass data
startActivity(intent);
}
if（SharedPreference.getBoolean（getApplicationContext（），getApplicationContext（）。getResources（）。getString（R.string.sp_isLoginIN）））在HomeActivity中写入此逻辑（在setContentView（）之前的onCreate（）中）所以每次用户都将重新编写 - 指向HomeActivity，如果上述条件满足，用户将再次重定向到NotificationsActivity，其他将继续使用HomeActivity
这对我有用 - 只需在onMessageReceived()中添加以下代码即可
Intent intent = new Intent(this, NotificationsActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |Intent.FLAG_ACTIVITY_CLEAR_TASK);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "111")
.setSmallIcon(R.drawable.logo)
.setContentTitle(getString(R.string.yhnn))
.setContentText(title)
.setPriority(NotificationCompat.PRIORITY_DEFAULT)
// Set the intent that will fire when the user taps the notification
.setContentIntent(pendingIntent)
.setSound(sound)
.setAutoCancel(true);
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
// notificationId is a unique int for each notification that you must define
notificationManager.notify(5, builder.build());