android surfaceview getwidth returns 0

android surfaceview getwidth returns 0

http://www.havenliu.com/java/689.html Android本身带有Progress控件。可以在布局中灵活使用,但如果是在自定义的View或者SurfaceView中使用,就需要自己实现,其实不难,只要熟悉了android的PorterDuff,就能利用PorterDuff的遮罩效果方便的实现进度条。

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    https://developer.android.com
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