Question

下面显示的是我班级的简化版本。我在onReceive方法中遇到了麻烦，该方法没有更新小部件TextView。它显示logcat中的正确信息，该信息在setTextViewText之前的行上输出。我不确定什么是错的，一直在拉我的头发（我已经秃了）。

public class SnowWidget extends AppWidgetProvider {

public static List<Article> mymtns = new ArrayList<Article>();
public static RemoteViews remoteViews;
public static ComponentName thisWidget;

public static String amount = "";
public static String mtn_name = "";
public static String desc = "";
public static String condition = "";
public static String[] type;

public static int index = 0;

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

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

    thisWidget = new ComponentName(context, SnowWidget.class);

    // This one works fine
    remoteViews.setTextViewText(R.id.snowwidget,  mtn_name+ "\n"+ amount+"\"\n"+ condition);

    /* Make the buttons work */

Intent next = new Intent(context, SnowWidget.class);
next.setAction(ACTION_WIDGET_RECEIVER);

PendingIntent nextPendingIntent = PendingIntent.getBroadcast(context, 0, next, 0);
remoteViews.setOnClickPendingIntent(R.id.nextMtn, nextPendingIntent);

/* END - Make the buttons work */

    appWidgetManager.updateAppWidget(thisWidget, remoteViews);
}

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

    // check, if our Action was called
    if (intent.getAction().equals(ACTION_WIDGET_RECEIVER)) {
        if(mymtns.size() > 0)
        {

            // This show up correctly in logcat
            Log.d("onReceive", "New Info => "+ mtn_name+ "\n"+ amount+"\"\n"+ condition);
            // This never updates my widget
            remoteViews.setTextViewText(R.id.snowwidget,  mtn_name+ "\n"+ amount+"\"\n"+ condition);

        }
    }

    super.onReceive(context, intent);
}

}

Answer 1

找到答案。调用remoteViews.setTextViewText后，您需要通过调用updateAppWidget来更新小部件。我添加的代码如下所示。

AppWidgetManager manager = AppWidgetManager.getInstance(context);
manager.updateAppWidget(thisWidget, remoteViews);

setTextViewText不更新小部件

1 个答案: