我如何使用Android ZoomButtonsController？ [英] How do I use Android ZoomButtonsController?

问题描述

OK，我在我无计可施。

我不知道如何使用android.widget.ZoomButtonsController 。我想要的是有一个缩放控件我[展示|隐藏| [启用|禁用]变焦[IN | OUT]按钮]对我的看法。我不能把它添加到我的布局XML，当我在我的onCreate实例化，我看不到它在屏幕上。

 查看浏览器= ...
ZoomButtonsController控制器=新ZoomButtonsController（观众）;
controller.setVisible（真）;
 

解决方案

我希望，你需​​要调用 getZoomControls（）在 ZoomButtonsController ，然后添加到您的布局不管你想要的按钮出现。你可以让你的视图层次的快照 hierarchyviewer 时的变焦控制是理论上的可见确认理论 - 如果他们不是在你看来hiearchy，则需要添加它们。

OK, I'm at the end of my wits.

I have no idea how to use android.widget.ZoomButtonsController. All I want is to have a zoom controls which I [show|hide|[enable|disable] zoom [in|out] buttons] for my View. I can't add it to my layout xml, and when I instantiate it in my onCreate, I can't see it on the screen.

View viewer = ...
ZoomButtonsController controller = new ZoomButtonsController(viewer);
controller.setVisible(true); 

解决方案

I would expect that you need to call getZoomControls() on the ZoomButtonsController, then add that to your layout wherever you want the buttons to appear. You can confirm that theory by getting a snapshot of your view hierarchy with hierarchyviewer when the zoom controls are theoretically visible -- if they are not in your view hiearchy, then you will need to add them.

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