单击未启动应用程序的通知

Question

当在应用程序未运行时收到推送通知并且用户按下通知时，它就会消失，日志显示：

2019-10-22 12:42:45.747 23260-23260/de.app.test.staging E/FirebaseMessaging: Notification pending intent canceled

以下是应该作为启动器活动启动的 SplashActivity：

<activity
android:name="de.app.test.login.SplashActivity"
android:screenOrientation="portrait"
android:exported="true"
android:theme="@style/Theme.AppCompat.Light.NoActionBar.FullScreen">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

这里可能有什么问题？

Answer 1

对于任何寻找答案的人来说，后端正在向通知发送"click_action"，因此该活动没有意图过滤器。

对我来说，click_action是"OPEN_ACTIVITY_1"，所以我只是在我的 SplashActivity 中添加了一个意图过滤器，如下所示：

<intent-filter>
<action android:name="OPEN_ACTIVITY_1" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>

Answer 2

您需要在 notificationBuilder 实例中设置 pendingIntent 对象，例如

mBuilder = new NotificationCompat.Builder(this, CHANNEL_ID);
Intent intent = new Intent(context, TargetActivity.class));
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
builder.setContentIntent(pendingIntent);

请注意，CHANNEL_ID适用于大于或等于奥利奥的内部版本

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
CHANNEL_ID = createNotificationChannel(CHANNEL_ID, "channelName");
}

@RequiresApi(Build.VERSION_CODES.O)
private String createNotificationChannel(String channelId, String channelName) {
// Create the NotificationChannel, but only on API 26+ because
// the NotificationChannel class is new and not in the support library
String description = "description";
NotificationChannel channel = new NotificationChannel(channelId, channelName, NotificationManager.IMPORTANCE_NONE);
channel.setLightColor(Color.BLUE);
channel.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
channel.setDescription(description);
// Register the channel with the system; you can't change the importance
// or other notification behaviors after this
mNotificationManager.createNotificationChannel(channel);
return channelId;
}

Answer 3

Forground app：

您需要一个挂起的意图才能打开应用。

试试这个：

NotificationManager notificationManager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(icon, message, when);
Intent notificationIntent = new Intent(context, SplashActivity.class);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent intent = PendingIntent.getActivity(context, 0,
notificationIntent, 0);
notification.setLatestEventInfo(context, title, message, intent);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(0, notification);

如果活动处于后台或已关闭，则通知中心中会显示应用启动器活动的通知消息。

您可以使用 BroadcastReceiver 类。关闭应用时，广播可以侦听此操作。因此，如果您创建一个 BroadcastReceiver 类，则不会考虑此问题。

public class ClosedBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
context.startForegroundService(new Intent(context, HomePage.class));
} else {
context.startService(new Intent(context, HomePage.class));
}
}
}

更多信息：

https://firebase.google.com/docs/cloud-messaging/android/receive