Intent update = new Intent(context,MenuWidgetProvider.class);
update.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
update.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS,appWidgetIds);
PendingIntent pIUpdate = PendingIntent.getbroadcast(context,update,0);
((AlarmManager) context.getSystemService(Context.ALARM_SERVICE)).
set(AlarmManager.RTC,nextTime.toMillis(false),pIUpdate);

Log.d(TAG,"updating: " + dmt.mealName);

for (int i = 0; i < appWidgetIds.length; ++i) {
    int widgetId = appWidgetIds[i];

    RemoteViews views = new RemoteViews(context.getPackageName(),R.layout.widget_menu);
    // meal name
    views.setTextViewText(R.id.widget_locname,prefs.getString(PREF_WIDGET_LOCNAME,""));

    // adapter
    Intent adapter = new Intent(context,MenuWidgetAdapterService.class);
    adapter.putExtra(EXTRA_LOCATIONID,prefs.getInt(PREF_WIDGET_LociD,-1));
    adapter.putExtra(EXTRA_MEALNAME,dmt.mealName);
    adapter.putExtra(EXTRA_DATE,dmt.date.toString());
    views.setRemoteAdapter(R.id.widget_list,adapter);

    // update
    manager.updateAppWidget(widgetId,views);
}

super.onUpdate(context,manager,appWidgetIds);

奇怪的是,当更新发生时,onUpdate()方法运行 – 我看到Log.d调用的输出 – 但我的RemoteViewsFactory中没有调用onDataSetChanged().即使我调用notifyAppWidgetViewDataChanged,也没有效果.

我是如何解决它的：

在你的WidgetProviderClass中

adapter.setData(Uri.fromParts("content",String.valueOf(appWidgetIds[i]+randomNumber),null));

randomNumber是一个随机数(WidgetProvider类的公共静态成员).

然后在RemoteViewsFactory类中,执行：

appWidgetId = Integer.valueOf(intent.getData().getSchemeSpecificPart())
            - WidgetProvider.randomNumber;

这让“服务”认为它必须为另一个小部件创建一个Factory,因此创建一个带有更新值的新工厂,该工厂附加到您的小部件.

希望这可以帮助.

但是在onRecive方法中,当我尝试使用RemoteViews为我的组件设置文本时,文本不会更新,也不会调用任何错误.我在下面附上了我的代码,任何帮助都会很棒.

谢谢,
中号

package com.android.FirstWidget;import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.appwidgetprovider;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ImageButton;
import android.widget.RemoteViews;

public class Exampleappwidgetprovider extends appwidgetprovider {

    @Override
    public void onReceive(Context context,Intent intent) {
        // Todo Auto-generated method stub
        Log.e("ds",intent.getAction());
        Log.e("f","f");
        if(intent.getAction().contains("1")){

            RemoteViews views =  new RemoteViews(context.getPackageName(),R.layout.wid);
            views.setTextViewText(R.id.textView1,"heyheyhey");
            Log.e("fssss","sssf");
        }
        super.onReceive(context,intent);
    }

    public void onUpdate(Context context,AppWidgetManager appWidgetManager,int[] appWidgetIds) {
        final int N = appWidgetIds.length;

        // Perform this loop procedure for each App Widget that belongs to this provider
        for (int i=0; i<N; i++) {
            int appWidgetId = appWidgetIds[i];

            // Create an Intent to launch ExampleActivity
            Intent intent = new Intent(context,Exampleappwidgetprovider.class);
            intent.setAction("1");
            PendingIntent pendingIntent = PendingIntent.getbroadcast(context,intent,0);
            // Get the layout for the App Widget and attach an on-click listener
            // to the button
            RemoteViews views = new RemoteViews(context.getPackageName(),R.layout.wid);
            views.setonClickPendingIntent(R.id.arrowLeft,pendingIntent);
           views.setonClickPendingIntent(R.id.arrowRight,pendingIntent);
//views.set
            // Tell the AppWidgetManager to perform an update on the current app widget
            appWidgetManager.updateAppWidget(appWidgetId,views);

        } 

    }
}

package com.android.FirstWidget;import android.app.PendingIntent;
 import android.appwidget.AppWidgetManager;
 import android.appwidget.appwidgetprovider;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.View;
 import android.widget.ImageButton;
 import android.widget.RemoteViews;

 public class Exampleappwidgetprovider extends appwidgetprovider {


     @Override
     public void onReceive(Context context,Intent intent) {
         // Todo Auto-generated method stub
         Log.e("ds",intent.getAction());
         Log.e("f","f");

         RemoteViews views =  new RemoteViews(context.getPackageName(),R.layout.wid);
         if(intent.getAction().contains("arrow_left")){
             views.setTextViewText(R.id.textView1,"left");
             Log.e("fssss","sssf");
         }
         else if(intent.getAction().contains("arrow_right")){
             views.setTextViewText(R.id.textView1,"right");
             Log.e("fssss","sssf");
         }

         else {
             super.onReceive(context,intent);
         }
         ComponentName componentName = new ComponentName(context,Exampleappwidgetprovider.class);
         AppWidgetManager.getInstance(context).updateAppWidget(componentName,views);
     }

    public void onUpdate(Context context,Exampleappwidgetprovider.class);
            intent.setAction("arrow_left");
            PendingIntent pendingIntent = PendingIntent.getbroadcast(context,pendingIntent);

            intent = new Intent(context,Exampleappwidgetprovider.class);
            intent.setAction("arrow_right");
            pendingIntent = PendingIntent.getbroadcast(context,views.setonClickPendingIntent(R.id.arrowRight,views);

        } 

    }
}

此外,虽然我相信你编码的内容应该可以工作,但如果没有,你可以尝试在清单文件中设置按钮的intent操作.它应该是这样的

<intent-filter >
        <action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
        <action android:name="com.android.FirstWidget.arrow_left"/>
        <action android:name="com.android.FirstWidget.arrow_right"/>
</intent-filter>

我想现在应该可以了.我自己偶然发现了这个问题,并在此找到了解决方案：Clickable widgets in android