Runnable不在Android小部件上停止

我有一个android小部件，我想每5秒更新一次自己的文本视图

可以将其视为一个新闻小部件，其中最重要的新闻将一次显示在小部件上。出于演示目的，我将使用数组向您显示不同的文本

代码如下：

public class ListingsWatchWidget extends AppWidgetProvider {

    private static int WIDGET_REFRESH_TIME = 5;
    public Handler handler = new Handler();

    //private RemoteViews views;    
    private int REFRESH_COUNT = 0;
    private String[] titles = {"Title 1", "Title 2", "Title 3"};

    public boolean killMe = false;

    private Context ctx;

    Runnable updateWidgetText = new Runnable()
    {
        @Override
        public void run() {

        Log.i("ListingsWatchWidget", "killMe is " + ListingsWatchWidget.this.killMe);
        if (ListingsWatchWidget.this.killMe) { return; }

        AppWidgetManager gm = AppWidgetManager.getInstance(ctx);                        
        ComponentName thisWidget = new ComponentName(ctx, ListingsWatchWidget.class);         

        int index = (int)(REFRESH_COUNT % titles.length);
        Log.i("ListingsWatchWidget", "index = " + index);

        RemoteViews views = new RemoteViews(ctx.getPackageName(),R.layout.widget);    
        views.setTextViewText(R.id.titleTextView, titles[index]);  

        gm.updateAppWidget(thisWidget, views);

        REFRESH_COUNT++;

        handler.postDelayed(this, WIDGET_REFRESH_TIME * 1000);

        }   
    };  


    @Override
    public void onReceive(Context context, Intent intent) {
        super.onReceive(context, intent);

        Log.i("ListingsWatchWidget", intent.getAction());

        if (intent.getAction().equals("android.appwidget.action.APPWIDGET_ENABLED")) {
            handler.removeCallbacks(updateWidgetText);
            ctx = context;
            handler.postDelayed(updateWidgetText, WIDGET_REFRESH_TIME*1000);
        }
        else if (intent.getAction().equals("android.appwidget.action.APPWIDGET_DISABLED")) {
            handler.removeCallbacks(updateWidgetText);
            this.killMe = true;
        }

    }

    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        //TODO ...
    }

}

除了用户从桌面上删除小部件外，其他一切都正常工作。runnable继续无休止地运行

我尝试过各种各样的解决方案，但没有一个奏效

如果记录器在将小部件添加到桌面和删除它时：

06-20 22:22:57.318: I/ListingsWatchWidget(4012): android.appwidget.action.APPWIDGET_ENABLED
06-20 22:22:57.328: I/ListingsWatchWidget(4012): android.appwidget.action.APPWIDGET_UPDATE
06-20 22:23:02.323: I/ListingsWatchWidget(4012): killMe is false
06-20 22:23:02.323: I/ListingsWatchWidget(4012): index = 0
06-20 22:23:06.857: I/ListingsWatchWidget(4012): android.appwidget.action.APPWIDGET_DELETED
06-20 22:23:06.877: I/ListingsWatchWidget(4012): android.appwidget.action.APPWIDGET_DISABLED
06-20 22:23:07.338: I/ListingsWatchWidget(4012): killMe is false
06-20 22:23:07.338: I/ListingsWatchWidget(4012): index = 1

---

小部件删除后，runnable应该停止…

此实现将不可靠。Android将随时终止您的进程，您将不再更新应用程序小部件。@Commonware我做错了什么？为什么removeCallbacks实际上不停止Runnable？