扫码 iOS上实现扫码的方法有ZBar,ZXing,AVFoundation AVFoundation cocoa自带库,无论在扫描灵敏度和性能上来说都是最优的,前提是iOS7之后才能用 Reference http://blog.cnbluebox.com/blog/2014/08/26/ioser-wei-ma-sao-miao/ https://github.com/shaojiankui/Scanner