GLES20Canvas.nDrawDisplayList缓慢 [英] GLES20Canvas.nDrawDisplayList is slow

问题描述

我有我试图显示自定义视图，但我看到它了一堆抖动。
一切卷轴缓慢，这是因为没有响应，因为它应该的。

I have a custom view that I am trying to display, however I am seeing a bunch of jitter on it. Everything scrolls slow and it isn't as responsive as it should be.

我用traceview，看见

I used traceview and saw that

GLES20Canvas.nDrawDisplayList

GLES20Canvas.nDrawDisplayList

似乎负责采取了大量的时间来执行。

seems responsible for taking a lot of time to execute.

任何帮助吗？

推荐答案

GLES20Canvas.nDrawDisplayList预计将有时间的很大一部分，如果你画了很多，尤其是非常大的意见。
如果您看到这一切在你的traceview答案是抽取更少

GLES20Canvas.nDrawDisplayList is expected to have a large portion of the time if you are drawing a lot, especially very big views. If you are seeing this all over your traceview the answer is "DRAW LESS"

在我的具体问题，我画了大美景的大型阿尔法层。
我建议阅读做的和不要的从 Android 3.0的硬件加速通过罗曼盖伊

In my specific issue I was drawing a large alpha layer over large views. I would recommend reading the Do's and Dont's from Android 3.0 Hardware Acceleration by Romain Guy

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