实现android相机通过重力感应自动对焦，支持闪光灯、相册浏览，解决相机程序在不同型号手机无法自动对焦的问题。-Android camera through gravity sensing autofocus, support flash, album browsing, to solve the camera program in different types of mobile phones can not focus automatically.

实现二维码的扫描识别与生成二维码。还能开启闪光灯和扫描相册中的二维码。(Realize two-dimensional code scanning recognition and generate two-dimensional code. You can also turn on the flash and scan the QR code in the album.)