Question

如果我有两个小部件并按下第一个按钮，则第二个小部件会自动更新。这不是意图:)调试时我发现第一个小部件是第二个用于更新的小部件

public class WidgetActivity extends AppWidgetProvider {
    public static WidgetActivity Widget = null;
    public static Context context;
    public static AppWidgetManager appWidgetManager;
    public static int appWidgetIds[];   
    public static String ACTION_OPEN_APP = "OpenApp";
    private static int appWidgetId;


    @Override
    public void onUpdate( Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds )    {     
        if (null == context) context = WidgetActivity.context;
        if (null == appWidgetManager) appWidgetManager = WidgetActivity.appWidgetManager;
        if (null == appWidgetIds) appWidgetIds = WidgetActivity.appWidgetIds;

        WidgetActivity.Widget = this;
        WidgetActivity.context = context;
        WidgetActivity.appWidgetManager = appWidgetManager;
        WidgetActivity.appWidgetIds = appWidgetIds;

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

            updateAppWidget(context,appWidgetManager, appWidgetId);            
        }

    }


    public void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
            int appWidgetId) {

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

        Intent intent = new Intent(context, UpdateService.class);


        PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);

        Intent configIntent = new Intent(context, Main.class);
        configIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent configPendingIntent = PendingIntent.getActivity(context, 0, configIntent, 0);

        remoteViews.setOnClickPendingIntent(R.id.headlinesBox, configPendingIntent);

        remoteViews.setOnClickPendingIntent(R.id.WidgetRefresh_btn, pendingIntent);

        setHeadlines(appWidgetId);

        // Tell the widget manager
        appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
    }

    public static void setHeadlines(int appWidgetId)
    {
        RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget);

        ArrayList<String> newsItems = getRssItems("*****rss.php", appWidgetId); 

        if(newsItems.size() == 3)
        {
            remoteViews.setTextViewText(R.id.headline1, newsItems.get(0));
            remoteViews.setTextViewText(R.id.headline2, newsItems.get(1));
            remoteViews.setTextViewText(R.id.headline3, newsItems.get(2));
        }

        DateTime dateTime = new DateTime();
        CharSequence text = dateTime.getTime();
        remoteViews.setTextViewText(R.id.WidgetUpdateTime, text);
        remoteViews.setViewVisibility(R.id.progressWidget, View.GONE);
        remoteViews.setViewVisibility(R.id.WidgetRefresh_btn, View.VISIBLE);

        appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
    }



    public static ArrayList<String> getRssItems(String feedUrl, int appWidgetId) 
    {

    }


    public static class UpdateService extends Service {
        @Override
        public void onStart(Intent intent, int startId) {

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

            remoteViews.setViewVisibility(R.id.WidgetRefresh_btn, View.GONE);
            remoteViews.setViewVisibility(R.id.progressWidget, View.VISIBLE);


            appWidgetManager.updateAppWidget(appWidgetId, remoteViews);


        WidgetActivity.Widget.onUpdate(context, appWidgetManager, appWidgetIds);

        }

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

Answer 1

很难理解你的意思：

调试时，我注意到第一个小部件是第二个用于更新的小部件

但是，我认为我理解您的一般问题：您的AppWidgets没有正确更新？看了你的代码之后，看起来你的问题可能是appWidgetId被声明为静态。也许尝试删除该关键字。

另外，我没有在代码中看到任何按钮。

修改

看起来你的appWidgetId被覆盖了。这是我的建议，利用AppWidgetProvider作为广播接收器，而不是通过PendingIntent按钮点击发送广播。您还必须确保将appWidgetId作为额外内容传递，以确保更新正确的窗口小部件。这是一个例子，应该在你的updateAppWidget方法中：

Intent refreshAction = new Intent();
refreshAction.setAction(MY_CUSTOM_REFRESH_ACTION);
refreshAction.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
PendingIntent refreshPendingIntent.........

然后在onReceive覆盖：

@Override
public void onReceive(Context context, Intent intent) {
  .....
  Bundle extras = intent.getExtras();
  int appWidgetId = extras.getExtra(AppWidgetManager.EXTRA_APPWIDGET_ID);
  .....
}

然后你应该准备好了，更新正确的小部件。还有一点需要注意，如果还没有，请务必阅读有关BroadcastReceivers的文档。您必须注册以接受AndroidManifest中WidgetActivity元素中的MY_CUSTOM_REFRESH_ACTION。

First widget更新第二个小部件

1 个答案: