Android小部件无法更改背景颜色

Question

I'm trying to change the background color of a ListView in an active widget on the fly like so,

public static void updateWidgetTheme(Context context, int bgColor) {
    RemoteViews widget = new RemoteViews(context.getPackageName(), R.layout.widget);
    widget.setInt(R.id.listView, "setBackgroundColor", bgColor);
}

Which i'm calling from the Main activity of my app. There are active widgets. It seems to have no effect. I've read several questions where this is the appropriate way to change background color of a view in an active widget.

Why isn't this working?

Answer 1

仅更改RemoteViews是不够的-您需要使用appWidgetId和更新后的RemoteViews调用AppWidgetManager.updateAppWidget（）才能实际更新窗口小部件。