{
// 指定启动AlarmActivity组件
Intent intent = new Intent(MainActivity.this
, AlarmActivity.class);
// 创建PendingIntent对象
PendingIntent pi = PendingIntent.getActivity(
MainActivity.this, 0, intent, 0);
Calendar c = Calendar.getInstance();
c.setTimeInMillis(System.currentTimeMillis());
// 根据用户选择时间来设置Calendar对象
c.set(Calendar.HOUR , hourOfDay);
c.set(Calendar.MINUTE , minute);
c.set(Calendar.SECOND , 0); ///////////////////////////////////////////////////////////////
c.set(Calendar.MILLISECOND, 0);