AlarmManager 启动应用程序而不仅仅是发送通知

Question

我目前有一个应用程序，当按下按钮时，在一段时间后，会设置状态栏通知。

一切正常，除了如果用户没有打开应用程序，当通知出现时，应用程序也会重新打开。这不是我希望发生的事情。我希望通知单独出现（无论用户在哪里）。

按我的按钮，我使用：

    // get a Calendar object with current time
Calendar cal = Calendar.getInstance();
// add minutes to the calendar object
cal.add(Calendar.SECOND, time);
Intent alarmintent = new Intent(getApplicationContext(), AlarmReceiver.class);
alarmintent.putExtras(bundle);
// In reality, you would want to have a static variable for the request code instead of 192837
PendingIntent sender = PendingIntent.getBroadcast(getApplicationContext(), HELLO_ID, alarmintent, 0);
// Get the AlarmManager service
AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
am.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), sender);

这调用我的 AlarmReceiver.class，它使用此代码调用我的通知类：

        Intent myIntent = new Intent(context, Note.class);
    myIntent.putExtras(bundle2);


     myIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TOP);

    context.startActivity(myIntent);

notification.class：

public class Note extends Activity {




    /** Called when the activity is first created. */
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        String ns = Context.NOTIFICATION_SERVICE;
        final NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);

        int icon = R.drawable.launcher;
        CharSequence tickerText = "Remind Me!";
        long when = System.currentTimeMillis();

        final Notification notification = new Notification(icon, tickerText, when);

    notification.flags |= Notification.FLAG_AUTO_CANCEL | Notification.FLAG_NO_CLEAR;

    final Context context = getApplicationContext();
    CharSequence contentTitle = "Remind Me!";
    CharSequence contentText = param1;

    Intent notificationIntent = new Intent(context, Completed.class);
    PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);

    notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);


            mNotificationManager.notify(HELLO_ID, notification);

            HELLO_ID++;


         }
}

Answer 1

这是预期的结果，因为您在 AlarmReceiver 类中创建的 Intent 显式启动您的 Note Activity。

为什么不在 AlarmReceiver 中简单地创建通知呢？ （而不是启动您的活动）