安卓：我需要一个圆形的摄像头preVIEW。如何实现呢？ [英] Android: I need a circular camera preview. How to achieve it?

问题描述

我发现自己需要帮助。

我想开发这个简单的应用程序，拍摄照片（哇，这就是原创！）。一切安好。我唯一​​需要的是有一个圆形的摄像头preVIEW。

I'm trying to develop this simple app that takes pictures (Wow, now that's original!). Everything is fine. The only thing I need is to have a CIRCULAR CAMERA PREVIEW.

我放在框架布局内我的相机preVIEW类（它扩展surfaceview），这是我的相机preVIEW基本。大家都知道，这是在一个矩形。因为我有更大的计划为应用程序，我需要相机preVIEW是圆形的（因此，例如，有人可以把别人的脸的照片，我可以有一些图纸左右...）。

I have my camerapreview class (which extends surfaceview) placed inside a frame layout, which is my camera preview basically. As you all know, this comes in a rectangular shape. Since I have bigger plans for the app, I'd need the camera preview to be circular (so, for example, someone can take a picture of someone's face and I can have some drawings around...).

现在，我不知道如何着手。我尝试不同的东西，创建具有XML的形状，并将其设置为背景为我的框架布局，但只是没有工作。

Now, I don't know how to proceed. I tried different things, creating a shape with xml and set it as background for my frame layout, but that just didn't work.

在花谷歌的解决方案，我决定，我不得不放弃到这里来。小时

After hours spent on google for solutions I decided that I had to give up and come here.

所以，请，如果有人知道什么，让我们知道:)我希望我是不够清楚，不要犹豫，如果需要的话，要求澄清。

So please, if someone knows anything, let us know :) I hope I was clear enough, do not hesitate to ask for clarification if needed.

推荐答案

您可以通过相机preVIEW覆盖的的ImageView 。把两个 SurfaceView 和的ImageView 中的的FrameLayout 这两个 match_parent 和图像必须是在最前面。
设置在中间透明圈的黑色图像。

You can overlay an ImageView over the camera preview. put both the SurfaceView and the ImageView within a FrameLayout both match_parent and the image must be on top. Set to an black image with transparent circle in the middle.

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