我应该如何重写VideoView的OnDraw，以便它有透明的圆角？ [英] How should I override VideoView's onDraw in order for it to have transparent rounded corners?

问题描述

显然，利用背景形状不工作在VideoView的情况下， 此外，还有很多文章如何重写OnDraw中的ImageView的，并使其边角圆。

Clearly using a background shape doesnt work in the case of VideoView Also, there are lots of articles how to override onDraw for ImageView and make its corners round.

但我怎么做到这一点的VideoView？

But how do I do it for a VideoView?

推荐答案

透明圆角，不能用做了 VideoView 或 SurfaceView ，因为根据文档：

Transparent rounded corners cannot be done with a VideoView or any SurfaceView, as according to the documentation:

的表面为Z排序以便它是窗口保持其SurfaceView后面;所述SurfaceView冲头在其窗口的孔，以允许显示其表面

The surface is Z ordered so that it is behind the window holding its SurfaceView; the SurfaceView punches a hole in its window to allow its surface to be displayed.

随着 TextureView 似乎理论上是可行的，因为它应该表现得像一个普通视图。但是我无法过：无论是 TextureView 一层涂料和 ShapeDrawable 中的前景试图波特达夫模式父的FrameLayout 。

With a TextureView it seems theoretically possible, as its supposed to behave like a normal view. However I was unable too: Tried Porter Duff modes of both the TextureView layer paint and a ShapeDrawable in the foreground of the parent FrameLayout.

随着 VideoView ，你可以做的是让纯色的角落。使用9补丁与透明的内容和纯色的只是角落里，并且在一个的ImageView 是被绘制在上面设置

With a VideoView, what you can do is make corners of a solid color. Use a 9-patch with transparent content and just the corners of a solid color and set in on an ImageView that gets drawn on top.

编辑：查看这个示例项目。

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