setRotation后，Android VideoView不打（） [英] Android VideoView not playing after setRotation()

问题描述

我发现，调用一个VideoView setRotation（），即VideoView不再玩了。没有错误的是Android运行时抛出，而VideoView正确决定其产量尺寸，但只显示为纯黑色框。

I've found that after calling setRotation() on a VideoView, that VideoView no longer plays. No errors are thrown by the Android runtime, and the VideoView correctly determines its crop dimensions but only shows as a solid black box.

这是一个已知的限制？如果是的话是有另一种方式来旋转VideoViews？我使用API​​级16。

Is this a known limitation? If so is there another way to rotate VideoViews? I'm using API level 16.

编辑：视频播放音频，但没有视频。也许根本SurfaceView没有被重新定位？

The video plays audio, but no video. Perhaps the underlying SurfaceView isn't being repositioned?

推荐答案

要回答自己的情况下，它可以帮助别人后面，这是VideoView的已知限制。从这个Android图形的博客文章

To answer myself in case it helps somebody later, this is a known limitation of VideoView. Quote from this Android graphics blog post:

由于一个SurfaceView的内容并不住在应用程序的窗口，它不能改变（移动，缩放，旋转）有效。这使得难以使用SurfaceView一个ListView或滚动型的内部。 SurfaceView也不能与UI工具包的某些功能，如褪色边缘或View.setAlpha（）正确交互。

Because a SurfaceView’s content does not live in the application’s window, it cannot be transformed (moved, scaled, rotated) efficiently. This makes it difficult to use a SurfaceView inside a ListView or a ScrollView. SurfaceView also cannot interact properly with some features of the UI toolkit such as fading edges or View.setAlpha().

我能找到的唯一解决办法是用新推出的更换VideoView TextureView ，这是只有在API级别14及更高版本。从我读它不是目前在兼容性库可用。 这个问题有如何使用TextureView播放视频的例子，它是pretty容易和你失去的是一个VideoView一个包装的MediaPlayer为你带来的便利。

The only solution I could find was to replace the VideoView with the newly-introduced TextureView, which is only available in API level 14 and above. From what I read it is not currently available in the compatibility library. This question has an example of how to use a TextureView to play video, it's pretty easy and all you lose is the convenience of a VideoView wrapping a MediaPlayer for you.

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