Question

我创建了一个从Internet下载一些文本的类，我想在我的小部件中获取该文本并更新TextView。我知道事件（OnDownloadCompleteListener）正在被触发，因为我正在记录它，但我无法弄清楚如何从该事件中更新TextView。我知道这是一个新手的错误，只是不确定我错过了什么。

    public class Widget extends AppWidgetProvider{

        InternetText internettext; //Handles downloading the text from the internet
        RemoteViews views;

        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, MainActivity.class);
                PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);

                // Get the layout for the App Widget and attach an on-click listener
                // to the button
                views = new RemoteViews(context.getPackageName(), R.layout.widget);
                views.setOnClickPendingIntent(R.id.tvWidgetVerse, pendingIntent);

                internettext = new InternetText(context);
                internettext.setOnDownloadCompleteListener(new OnDownloadCompleteListener() {

                    @Override
                    public void onEvent() {
                        TheText thetext = internettext.downloadedText(); //The text object
                        Log.i("", "Widget Text Downloaded " + thetext.getText()); //This fires so I know we've downloaded the text
                        TextStyling textStyle = new TextStyling();



//*****THIS IS WHERE I'M HAVING THE PROBLEM********
                        views.setTextViewText(R.id.tvWidgetText, Html.fromHtml(textStyle.boldWords(thetext.getText()))); //this never updates
                    }
                });


                internettext.getText();

                // Tell the AppWidgetManager to perform an update on the current app widget
                appWidgetManager.updateAppWidget(appWidgetId, views);
            }
        }

    }

Answer 1

好的，我明白了。我必须在活动中致电appWidgetManager.updateAppWidget()。我知道这很简单......

appWidgetManager.updateAppWidget(appWidgetId, views);

这也意味着我必须制作appWidgetManager和appWidgetId final

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

更新事件中窗口小部件中的文本

1 个答案: