点击通知未启动应用程序

Question

当应用程序未运行时收到推送通知并且用户按下通知时，它就会消失并且日志显示：

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

这是应该作为 Launcher Activity 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>

这可能是什么问题？

Answer 1

对于任何寻找答案的人来说，后端会将“click_action”发送到通知，因此该 Activity 没有意图过滤器。

对我来说，click_action 是“OPEN_ACTIVITY_1”，所以我只是向我的 SplashActivity 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 用于构建版本大于或等于 Oreo

   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

前台应用：

您需要一个 PendingIntent 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 Activity 处于后台或关闭状态，则应用启动器活动的通知中心会显示通知消息。

您可以使用 BroadcastReceiver 类。当你关闭应用程序时，广播可以监听这个动作。所以，如果你创建一个 BroadcastReceiver 类，你就不会遇到这个问题。

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