我使用这些课程每天20:00开始我的活动。
public class MainActivity extends Activity
{
private PendingIntent pendingIntent;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 20);
calendar.set(Calendar.MINUTE, 00);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.AM_PM,Calendar.PM);
Intent myIntent = new Intent(MainActivity.this, MyReceiver.class);
pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, myIntent,0);
AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent);
alarmManager.set(AlarmManager.RTC, calendar.getTimeInMillis(), pendingIntent);
}
}
这是接收器类:
public class MyReceiver extends BroadcastReceiver
{
@Override
public void onReceive(Context context, Intent intent)
{
Intent service1 = new Intent(context, MyApp.class);
context.startService(service1);
}
}
现在我想让用户更改MyApp.class中的启动时间(我仍然必须执行此类),但现在我不知道如何用新的启动时间替换旧的启动时间。你能救我吗?
答案 0 :(得分:0)
使用AlarmManager
的{{1}}方法删除旧的启动时间关联:
cancel(PendingIntent intent)
然后,您可以使用相同的逻辑重新创建重复警报。