容易忘记写的代码（1）
??? 1? appWidgetManager.updateAppWidget(appWidgetIds, views);
??? 2? Toast.show()
??? 3? startActivity();
??? 4? alertDialog.create(); alertDialog.show();
??? 5? 在appwidget中appWidgetManager.updateAppWidget(appWidgetIds, mRemoteViews);
??? 6? editor.commit();
??? 7? writer.flush();
??? 8? 在Android的列表中动态加载列表项需要对adapter里的源容器进行更新修改后再调用??? ??? ??? ?
??? 9? adapter.notifyViewChanaged()方法刷新当前listView.
