hasOverlappingRendering（）和两个ImageViews [英] hasOverlappingRendering() and two ImageViews

问题描述

我有一个自定义的查看，它包含，除其他外，两个 ImageViews 在彼此的顶部。
我设置 hasOverlappingRendering（）返回假的，并没有任何问题，同时设置阿尔法。

I have a custom View, which contains, amongst others, two ImageViews on top of each other. I set hasOverlappingRendering() to return false, and haven't had any issues while setting alpha.

但并没有它真的包含重叠性（这两个 ImageViews ）？如果不是这是某种形式的（图形）错误？

But doesn't it really contain overlapping rendering (the two ImageViews)? Shouldn't this be a (graphical) error of some sort?

推荐答案

一个迟到的答案。但迟到总比不到好。答案是不包含重叠的渲染。我发现下面的视频非常有用：<一href=\"https://www.youtube.com/watch?v=wIy8g8yNhNk&feature=youtu.be&list=PLWz5rJ2EKKc9CBxr3BVjPTPoDPLdPIFCE&t=247\" rel=\"nofollow\">https://www.youtube.com/watch?v=wIy8g8yNhNk&feature=youtu.be&list=PLWz5rJ2EKKc9CBxr3BVjPTPoDPLdPIFCE&t=247

A late answer.. But better late than never. The answer is that doesn't contain overlapping rendering. I found the following video really useful: https://www.youtube.com/watch?v=wIy8g8yNhNk&feature=youtu.be&list=PLWz5rJ2EKKc9CBxr3BVjPTPoDPLdPIFCE&t=247

谷歌的工程师们用一个例子，当你返回false从该hasOverlappingRendering（）

Google engineers are explaining with an example what is happening when you return false from the the hasOverlappingRendering()

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