[英]Push notification is sent when app is in foreground
即使應用程序在后台,如何發送推送通知? 我有一個Android應用程序,它從服務器接收推送通知,並且當應用程序在后台時它不會發送。 僅在應用程序處於后台時發送。
您需要將其添加到清單文件中:
<service
android:name=".name_of_your_firebase_instace_service"
android:exported="false">
<intent-filter>
<action android:name="com.google.firebase.INSTANCE_ID_EVENT" />
</intent-filter>
</service>
<service
android:name=".nname_of_your_firebase_messaging_service
android:exported="false">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
這是刷新令牌的類(實例服務)
public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {
private static final String TAG = MyFirebaseInstanceIDService.class.getSimpleName();
@Override
public void onTokenRefresh() {
super.onTokenRefresh();
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
// sending reg id to your server
sendRegistrationToServer(refreshedToken);
Log.d("NewToken",refreshedToken);
}
private void sendRegistrationToServer(final String token) {
// sending gcm token to server
Log.e(TAG, "sendRegistrationToServer: " + token);
}
}
消息服務,您將在其中接收消息/通知
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = MyFirebaseMessagingService.class.getSimpleName();
private NotificationUtils notificationUtils;
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
Log.e(TAG, "From: " + remoteMessage.getFrom());
if (remoteMessage == null)
return;
// Check if message contains a notification payload.
// Check if message contains a data payload.
if (remoteMessage.getData().size() > 0) {
Log.e(TAG, "Data Payload: " + remoteMessage.getData().toString());
//you can send your own custom notification here if you are sending notification in data tag or if you are sending notification with "notification tag" it will handle it automatically
}
}
}
注意:不要忘記在項目的應用程序文件夾中添加google-service.json文件
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