Intent服务,选择activity启动

Intent service, choose activity to launch

我有一个 class 实现了从 Web 服务检索一些数据的 IntentService,如果条件得到验证,则在通知栏的设备上显示通知。 这是代码:

public BackgroundService() {
    super("SERVICENAME");
}

@Override
protected void onHandleIntent(Intent intent) {
    if (verifyConditions()) {
        showNotification();
    }
}

private void showNotification() {
    NotificationCompat.Builder builder = new NotificationCompat.Builder(
            this).setContentTitle("title")
            .setContentText("content")
            .setSmallIcon(R.drawable.notification_icon);
    // .setContentIntent(pendingIntent);

    Intent notificationIntent = new Intent(this.getApplicationContext(),
            SplashScreen.class);
    PendingIntent contentIntent = PendingIntent.getActivity(
            this.getApplicationContext(), 0, notificationIntent, 0);
    notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
            | Intent.FLAG_ACTIVITY_SINGLE_TOP);

    // set sound
    Uri alarmSound = RingtoneManager
            .getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    builder.setSound(alarmSound);

    builder.setContentIntent(contentIntent);
    Notification notification = builder.build();

    // Hide the notification after it's selected
    notification.flags |= Notification.FLAG_AUTO_CANCEL;

    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(0, notification);
}

现在,如果用户点击通知,将启动 SplashScreen activity(这是我应用程序的第一个 activity)。如果用户关闭了应用程序,这是可以的,但如果应用程序在前台,点击通知会导致应用程序重新启动。 有一种快速检查应用程序是否在前台的方法,如果是,则启动与 SplashScreen 不同的 activity?

希望这会有所帮助。您检查您的应用是否处于 运行 前台,并根据 PendingIntent 的更改意图访问 Whosebug : check android application is in foreground or not?