动态添加自定义视图到RemoteViews

Question

有人可以帮我这么做吗？我的代码是这样的:

 public CustomClass extends View {

//uses ondraw() to do something

}

为了在主屏幕上显示我的自定义视图,我创建了一个扩展广播接收器的类:

public class customAppWidgetProvider extends BroadcastReceiver {

    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();

        if (AppWidgetManager.ACTION_APPWIDGET_UPDATE.equals(action)) {
            RemoteViews views = new RemoteViews(context.getPackageName(),
                    R.layout.main);

           //Here I want to create my custom view class object and I want to add this view to linear layout in main.xml

              CustomClass object = new CustomClass(context) ;
              LinearLayout layout = new LinearLayout(context) ;
              layout.setLayoutParameters(new LayoutParameters(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
              layout.addView(object);

            views.addview(R.id.linearlayout, (ViewGroup) layout) ;
            views.setOnClickPendingIntent(R.id.analog_appwidget,
                    PendingIntent.getActivity(context, 0,
                        new Intent(context, AlarmClock.class),
                        PendingIntent.FLAG_CANCEL_CURRENT));

            int[] appWidgetIds = intent.getIntArrayExtra(
                    AppWidgetManager.EXTRA_APPWIDGET_IDS);

            AppWidgetManager gm = AppWidgetManager.getInstance(context);
            gm.updateAppWidget(appWidgetIds, views);
        }
    }
}

但添加ViewGroup到RemoteView引用不起作用...上面的main.xml布局仅包含LinearLayout.我想为它添加一个自定义视图对象.但是在运行之后,屏幕上没有任何显示......

请帮我这样做.提前致谢.

Answer 1

无法向View应用小部件添加自定义.请参阅"应用程序窗口小部件开发指南"的"创建应用程序窗口小部件布局"部分,了解View允许的类型.

Android 3.0增加了对某些视图的支持以显示集合.有关详细信息,请参阅"使用带有集合的App小部件"部分.

否则,动态添加允许的View一个应用程序窗口小部件,充气后RemoteViews,并得到一个参考,你可以使用它的addView(View)方法,或者addView(View)方法在任何的View已经在对象RemoteViews.