如何在为其设置 AlarmManager 之前调用 pendingIntent

Question

我有这个小部件，它以秒或分钟为间隔更新。

将小部件添加到屏幕 PreferencesActivity 启动后，当用户决定一切都已正确设置时，他退出设置，我正在调用方法：

public class MyWidgetConfiguration extends PreferenceActivity {
    // [...] Some code...

    private void createWidget() {
        Context c = getApplicationContext() ;
        SharedPreferences sp = getSharedPreferences( PREF_NAME+widgetID, MODE_PRIVATE );

        // Set layout
        AppWidgetManager awm = AppWidgetManager.getInstance( c );
        RemoteViews rv = new RemoteViews( c.getPackageName(), LAYOUT_ID );

        awm.updateAppWidget( widgetID, rv );

        // start alarm manager running this particular widget
        Intent i = new Intent( c, MyWidgetReceiver.class );
        PendingIntent pi = PendingIntent.getBroadcast( c, 0, i, 0 );
        AlarmManager a = (AlarmManager) c.getSystemService( Context.ALARM_SERVICE );

        /** 
         * MY GUESS IS, THAT I'D HAVE TO ADD SOME KIND OF PendingIntent CALL HERE,
         * I TRIED COUPLE OF THINGS, BUT MOST OF THEM INTERFERED OR CANCELLED FOLLOWING 
         * AlarmManager REPEATING... 
         *
         * DELAY contains time left to closest full minute 
         */
        a.setRepeating( AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime() + DELAY, MINUTE, pi );     

        /// return widget ID
        Intent resultValue = new Intent();
        resultValue.putExtra( AppWidgetManager.EXTRA_APPWIDGET_ID, widgetID );
        setResult( RESULT_OK, resultValue );

        finish();
    }

    // [...] More of some code...
}

所以，正如您在上面看到的，我从第一分钟开始每分钟都调用 alarmManager，延迟过后一切正常，但在此之前我的小部件有点冻结了一段时间。我想防止这种情况发生，但不向 Receiver 添加任何额外的逻辑，因为它甚至可以每秒调用一次。完整和原始代码在这里：http://goo.gl/uOP9P

Answer 1

PendingIntent 可能会调用一些在其他地方编写的代码。设置闹钟后为什么不直接调用相同的代码？