当我从Firebase发送推送时，如果该应用处于后台或已关闭，我会收到通知，但是当应用程序打开时没有...
调试我发现它已经在onMessageReceived中专门停留在MyMessagingService中，所以我猜我的问题是关于生成通知（或者可能是通知的意图）。
我已实施该服务：
public class MyMessagingService extends FirebaseMessagingService {
private static final String TAG = "MyMessagingService";
@Override
public void onMessageReceived(RemoteMessage remoteMessage)
{
Log.d(TAG, "From: " + remoteMessage.getFrom());
if(remoteMessage!=null)
{
String id = null;
String title = null;
String message = null;
String launchPage = null;
if(remoteMessage.getNotification()!=null)
{
if(remoteMessage.getNotification().getTitle()!=null)
{
title = remoteMessage.getNotification().getTitle();
}
if(remoteMessage.getNotification().getBody()!=null)
{
message = remoteMessage.getNotification().getBody();
}
}
if(remoteMessage.getMessageId()!=null)
{
id = remoteMessage.getMessageId();
}
Log.e(TAG, "id: " + id);
Log.e(TAG, Consts.TITLE + title);
Log.e(TAG, Consts.MESSAGE + ": " + message);
// Check if message contains a data payload.
if (remoteMessage.getData()!=null && remoteMessage.getData().size() > 0)
{
Log.d(TAG, "Message data payload: " + remoteMessage.getData());
if(remoteMessage.getData().containsKey(Consts.LAUNCH_PAGE))
{
launchPage = remoteMessage.getData().get(Consts.LAUNCH_PAGE);
}
Log.e(TAG, Consts.LAUNCH_PAGE + ": " + launchPage);
sendNotification(title, message, launchPage);
}
}
}
// [END receive_message]
/**
* Create and show a simple notification containing the received FCM message.
*
* @param messageBody FCM message body received.
*/
private void sendNotification(String title, String messageBody, String page)
{
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra(Consts.TITLE, title);
intent.putExtra(Consts.MESSAGE, messageBody);
if (launchPage != null)
{
intent.putExtra(Consts.LAUNCH_PAGE, launchPage);
}
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent, PendingIntent.FLAG_ONE_SHOT);
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.status)
.setContentTitle(title)
.setContentText(messageBody)
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
} }
在我的清单中我有：
<!-- [START fcm_default_icon] -->
<meta-data
android:name="com.google.firebase.messaging.default_notification_icon"
android:resource="@drawable/status" />
<meta-data
android:name="com.google.firebase.messaging.default_notification_color"
android:resource="@color/accent" />
<!-- [END fcm_default_icon] -->
<!-- [START fcm_default_channel] -->
<meta-data
android:name="com.google.firebase.messaging.default_notification_channel_id"
android:value="@string/default_notification_channel_id"/>
<!-- [END fcm_default_channel] -->
<service
android:name=".controller.service.MyMessagingService">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT"/>
</intent-filter>
</service>
<service
android:name=".controller.service.MyInstanceIDService">
<intent-filter>
<action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
</intent-filter>
</service>
有关如何在应用程序处于前台时生成通知的任何建议吗？
答案 0 :(得分：0)
我建议使用getData（）而不是getNotification（）。在getData（）中，收到通知＆amp;无论应用程序是在前景/后台，都会显示。 以下是供进一步参考的文档：FCM
答案 1 :(得分：0)
当应用在后台时，如果邮件包含通知，则甚至不会调用您的服务。 Firebase服务客户端处理通知并显示它。这就是它工作的原因。
首先，在应用程序为前台时调试它，并确保您在FCM的通知中同时收到通知和数据。
如果看起来不错，可能是时候处理超过时间限制的服务通知，尝试将onMessageReceived中的通知处理移动到后台线程。这里有一个例子http://www.zoftino.com/android-notification-data-messages-from-app-server-using-firebase-cloud-messaging
答案 2 :(得分：0)
我终于修复了这个问题，这是我如何创建通知的问题，所以这是我的代码：
private void sendNotification(String title, String messageBody, String page)
{
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(getApplicationContext(), getString(R.string.default_notification_channel_id));
Intent intent = new Intent(getApplicationContext(), MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra(Consts.TITLE, title);
intent.putExtra(Consts.MESSAGE, messageBody);
if (page != null)
{
intent.putExtra(Consts.LAUNCH_PAGE, page);
}
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
NotificationCompat.BigTextStyle bigText = new NotificationCompat.BigTextStyle();
bigText.bigText(title);
bigText.setBigContentTitle(messageBody);
mBuilder.setContentIntent(pendingIntent);
mBuilder.setSmallIcon(R.drawable.status);
mBuilder.setContentTitle(title);
mBuilder.setContentText(messageBody);
mBuilder.setPriority(Notification.PRIORITY_MAX);
mBuilder.setAutoCancel(true);
mBuilder.setStyle(bigText);
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
{
NotificationChannel channel = new NotificationChannel(getString(R.string.default_notification_channel_id), getString(R.string.default_notification_channel_name), NotificationManager.IMPORTANCE_DEFAULT);
mNotificationManager.createNotificationChannel(channel);
}
mNotificationManager.notify(0, mBuilder.build());
}
希望这可以帮助其他人。感谢您的重播。
答案 3 :(得分：0)
更改您的MyFirebaseMessagingService代码，
public class MyFirebaseMessagingService extends FirebaseMessagingService {
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
super.onMessageReceived(remoteMessage);
Log.d("msg", "onMessageReceived: " + remoteMessage.getData().get("message"));
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
String channelId = "Default";
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, channelId)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(remoteMessage.getNotification().getTitle())
.setContentText(remoteMessage.getNotification().getBody()).setAutoCancel(true).setContentIntent(pendingIntent);;
NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel(channelId, "Default channel", NotificationManager.IMPORTANCE_DEFAULT);
manager.createNotificationChannel(channel);
}
manager.notify(0, builder.build());
}
}
检查-How to handle the fire base notification when app is in foreground
答案 4 :(得分：0)
@SuppressLint("WrongConstant")
private void showNotification(String message) {
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this);
Intent resultIntent = new Intent(getApplicationContext(), SplashActivity.class);
resultIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
resultIntent.setFlags(Notification.FLAG_AUTO_CANCEL);
PendingIntent intent = PendingIntent.getActivity(getApplicationContext(), 0, resultIntent, 0);
mBuilder.setSmallIcon(R.drawable.app_icon);
mBuilder.setContentTitle("App Name");
mBuilder.setContentText(message);
Bitmap icon = BitmapFactory.decodeResource(getResources(), R.drawable.app_icon);
mBuilder.setLargeIcon(icon);
mBuilder.setStyle(new NotificationCompat.BigTextStyle().bigText(message));
mBuilder.setAutoCancel(true);
mBuilder.setPriority(Notification.PRIORITY_HIGH);
mBuilder.setDefaults(Notification.DEFAULT_LIGHTS);
mBuilder.setDefaults(Notification.DEFAULT_ALL);
if (Build.VERSION.SDK_INT> Build.VERSION_CODES.KITKAT)
{
mBuilder.setCategory(Notification.CATEGORY_MESSAGE);
}
mBuilder.setContentIntent(intent);
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(1, mBuilder.build());
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
int importance = NotificationManager.IMPORTANCE_HIGH;
NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "NOTIFICATION_CHANNEL_NAME", importance);
notificationChannel.enableLights(true);
notificationChannel.setLightColor(Color.RED);
notificationChannel.enableVibration(true);
notificationChannel.setShowBadge(false);
notificationChannel.setVibrationPattern(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
assert mNotificationManager != null;
mBuilder.setChannelId(NOTIFICATION_CHANNEL_ID);
mNotificationManager.createNotificationChannel(notificationChannel);
}
assert mNotificationManager != null;
mNotificationManager.notify(1, mBuilder.build());
}
答案 5 :(得分：0)
在IOS 10+和SWIFT 3+中
当应用程序处于前台时通知将到来时将调用present present函数willPresent函数将生成通知警报
Class AppDelegate : UNUserNotificationCenterDelegate{
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
completionHandler([.alert,.badge,.sound])
}
}
}