亮京京的博客

//1.生成二维码+ (CIImage *)createQRCodeFromString:(NSString *)str{    // 创建二维码    CIFilter *filter = [CIFilter filterWithName:@"CIQRCodeGenerator"];//CICode128BarcodeGenerator    // 2. 恢复滤镜的默认属性 

/** ** lineView:   需要绘制成虚线的view ** lineLength: 虚线的宽度 ** lineSpacing: 虚线的间距 ** lineColor:   虚线的颜色 **/- (void)drawDashLine:(UIView *)lineView lineLength:(int)lineLength lineSpacing:(int)line