AlarmManager.AlarmClockInfo 的 PendingIntent 是如何工作的？

Question

我正在尝试使用 AlarmManager.AlarmClockInfo 设置闹钟。

这个的构造函数需要时间和 PendingIntent，在文档中描述为：

an intent that can be used to show or edit details of the alarm clock.

然后 setAlarmClock( ) 也接受了一个未决的意图，在文档中描述为：

Action to perform when the alarm goes off

我了解 setAlarmClock( ) 对 PendingIntent 的使用，但是 AlarmClockInfo 如何使用 PendingIntent 以及如何使用它来编辑详细信息闹钟？

Answer 1

however, how is the PendingIntent used by AlarmClockInfo and how do I use it to edit the details of the alarm clock?

引自this book：

The biggest issue with setAlarmClock() is that it is visible to the user:

The user will see the alarm clock icon in their status bar, as if they had set an alarm with their device's built-in alarm clock app

The user will see the time of the alarm when they fully slide open their notification shade

Tapping on the alarm time in the notification shade will invoke the PendingIntent that you put into the AlarmClockInfo object

所以，鉴于此代码...：

  static void scheduleAlarms(Context ctxt) {
    AlarmManager mgr=
      (AlarmManager)ctxt.getSystemService(Context.ALARM_SERVICE);
    Intent i=new Intent(ctxt, PollReceiver.class);
    PendingIntent pi=PendingIntent.getBroadcast(ctxt, 0, i, 0);
    Intent i2=new Intent(ctxt, EventDemoActivity.class);
    PendingIntent pi2=PendingIntent.getActivity(ctxt, 0, i2, 0);

    AlarmManager.AlarmClockInfo ac=
      new AlarmManager.AlarmClockInfo(System.currentTimeMillis()+PERIOD,
        pi2);

    mgr.setAlarmClock(ac, pi);
  }

（来自 this sample project）

...当用户点击通知栏中的时间时，将出现EventDemoActivity。这个想法是你应该在这里提供一个 activity 允许用户取消或重新安排这个警报。

AlarmManager.AlarmClockInfo 的 PendingIntent 是如何工作的？

How does AlarmManager.AlarmClockInfo's PendingIntent work?

android

android-pendingintent