Android AppWidget中的按钮

您好，我正在尝试将按钮添加到我的Appwidget中，但即使在阅读了许多代码之后，我的按钮仍然无法工作

这是我的AppWidgetProvider： 公共类MyWidget扩展了AppWidgetProvider{

    public void onUpdate(Context context, AppWidgetManager appWidgetManager,
            int[] appWidgetIds) {

            Intent intent = new Intent(context, MyService.class);
            intent.setAction("0");
            intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);
            PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);


            RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widgetlayout);
            views.setOnClickPendingIntent(R.id.button_widget, pendingIntent);


            appWidgetManager.updateAppWidget(appWidgetIds, views);
        }
    }

这是我的服务：

public class MyService extends Service {


    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        String command = intent.getAction();
        int[] appWidgetIds = intent
        .getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);
        RemoteViews remoteView = new RemoteViews(getApplicationContext()
                .getPackageName(), R.layout.widgetlayout);
        AppWidgetManager appWidgetManager = AppWidgetManager
                .getInstance(getApplicationContext());


        if (command.equals("0")) {
            remoteViews.setTextViewText(R.id.button_widget, "TextChanged");
        }

        RemoteViews remoteViews = new RemoteViews(getPackageName(),
                R.layout.widgetlayout);

        appWidgetManager.updateAppWidget(appWidgetIds, remoteView);


        super.onStart(intent, startId);
        return 0;
    }




    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }

}

public class MyService extends Service {


    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        String command = intent.getAction();
        int[] appWidgetIds = intent
        .getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);
        RemoteViews remoteView = new RemoteViews(getApplicationContext()
                .getPackageName(), R.layout.widgetlayout);
        AppWidgetManager appWidgetManager = AppWidgetManager
                .getInstance(getApplicationContext());


        if (command.equals("0")) {
            remoteViews.setTextViewText(R.id.button_widget, "TextChanged");
        }

        /* 22/07/2011 DELETE START */
        //RemoteViews remoteViews = new RemoteViews(getPackageName(),
        //        R.layout.widgetlayout);
        /* 22/07/2011 DELETE END */    
        appWidgetManager.updateAppWidget(appWidgetIds, remoteView);


        super.onStart(intent, startId);
        return 0;
    }




    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }

}

这只是一个虚拟代码，当你点击按钮时，它应该会改变按钮的文本。它不会

你知道我做错了什么吗？

---

谢谢。

我只是看了一下你的源代码，似乎问题属于逻辑， 更改文本内容后重新创建新的RemoteView对象：

解决方案：注释掉以下代码行：

    /* 22/07/2011 DELETE START */
    //RemoteViews remoteViews = new RemoteViews(getPackageName(),
    //        R.layout.widgetlayout);
    /* 22/07/2011 DELETE END */   

类内MyService：

public class MyService extends Service {


    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        String command = intent.getAction();
        int[] appWidgetIds = intent
        .getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);
        RemoteViews remoteView = new RemoteViews(getApplicationContext()
                .getPackageName(), R.layout.widgetlayout);
        AppWidgetManager appWidgetManager = AppWidgetManager
                .getInstance(getApplicationContext());


        if (command.equals("0")) {
            remoteViews.setTextViewText(R.id.button_widget, "TextChanged");
        }

        RemoteViews remoteViews = new RemoteViews(getPackageName(),
                R.layout.widgetlayout);

        appWidgetManager.updateAppWidget(appWidgetIds, remoteView);


        super.onStart(intent, startId);
        return 0;
    }




    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }

}

public class MyService extends Service {


    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        String command = intent.getAction();
        int[] appWidgetIds = intent
        .getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);
        RemoteViews remoteView = new RemoteViews(getApplicationContext()
                .getPackageName(), R.layout.widgetlayout);
        AppWidgetManager appWidgetManager = AppWidgetManager
                .getInstance(getApplicationContext());


        if (command.equals("0")) {
            remoteViews.setTextViewText(R.id.button_widget, "TextChanged");
        }

        /* 22/07/2011 DELETE START */
        //RemoteViews remoteViews = new RemoteViews(getPackageName(),
        //        R.layout.widgetlayout);
        /* 22/07/2011 DELETE END */    
        appWidgetManager.updateAppWidget(appWidgetIds, remoteView);


        super.onStart(intent, startId);
        return 0;
    }




    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }

}

---

尝试将

onStartCommand

中的代码放入

public void onStart(Intent intent, int startId)

---

因为您可能会在只使用onStart的旧Android平台上运行代码。

将其删除，并将if中的行改为remoteView.etc，而不是remoteView.etc仍然无法工作。