iOS二维码的生成和扫描

本文实例为大家分享了Android九宫格图片展示的具体代码，供大家参考，具体内容如下 属性 @property (strong,nonatomic)AVCaptureDevice * device; @property (strong,nonatomic)AVCaptureDeviceInput * input; @property (strong,nonatomic)AVCaptureMetadataOutput * output; @property (strong,nonatomic)AVCaptureSession * session; @property (strong,nonat