setTextViewText不更新小部件

  • Z时代
  • 2024-01-10
  • 分类：问答

下面显示的是我班的简化版本。我在onReceive方法上遇到了麻烦，该方法没有更新小部件TextView。它在logcat中显示正确的信息，该信息在setTextViewText之前的行上输出。我不确定出什么问题了，并且一直在拔头发（而且我已经秃顶了）。

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);
}

}

回答：

找到了答案。调用后，remoteViews.setTextViewText您需要通过调用来更新窗口小部件updateAppWidget。我添加的代码如下所示。

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

以上是 setTextViewText不更新小部件 的全部内容， 来源链接： utcz.com/qa/400231.html

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