问题描述
我怎样写code的布局UI元素（按钮等）在相机preVIEW在Android？
How do I write code which layouts UI elements (Buttons, etc) over camera preview on Android ?
推荐答案
把 SurfaceView 在一个容器中，让Z轴分层，如 RelativeLayout的或的FrameLayout 。把东西出现在 SurfaceView 后来在XML之上 - 父母以后的孩子会画在早期儿童顶部的父
Put the SurfaceView in a container that allows for Z-axis layering, such as RelativeLayout or FrameLayout. Put the things to appear on top of the SurfaceView later in the XML -- later children of a parent will draw over top of earlier children in the parent.
这里是使用 SurfaceView 视频播放演示项目的技术。相同的概念应该憋了 SurfaceView 相机preVIEW。
Here is a project using a SurfaceView for video playback that demonstrates the technique. The same concepts should hold for a SurfaceView for camera preview.
记住额外的工作需要，要由机器人完成的融入你的widget与preVIEW，让您的preVIEW帧速率可能会下降。
Bear in mind that extra work needs to be done by Android to blend your widgets with the preview, so your preview frame rate may drop.
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