QR Encode allows anyone to generate various types of QR codes. You can export generated QR code in PNG or EPS format. QR Encode offers the ability to change the background and foreground colors of ...

将字符串生成二维码。能够将一个字符串（NSString）转换成一个二维码图像（UIImage）。代码中用到了类库libqrencode。

QR codes have been with us for a long time now, and after passing through their Gardenesque hype cycle of inappropriate usage, have now settled down to be an important and ubiquitous part of life. If ...