# SYQRCodeDemo

**Repository Path**: reesun1130/SYQRCodeDemo

## Basic Information

- **Project Name**: SYQRCodeDemo
- **Description**: /**SYQRCode:IOS原生API，需要IOS7.0及以上系统支持。
用法：
    //扫描二维码
    SYQRCodeViewController *aaa = [[SYQRCodeViewController alloc] init];
    aaa.SYQRCodeSuncessBlock = ^(NSString *qrString){
        
        self.saomiaoLabel.text = qrString;
    
    };
    
    aaa.SYQRCodeCancleBlock = ^(SYQRCodeViewController *are){
    
        self.saomiaoLabel.text = @"扫描取消~";
        [are dismissViewControllerAnimated:YES completion:nil];
    
    };
    [self presentViewController:aaa animated:YES completion:nil];
**/

- **Primary Language**: Objective-C
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: https://github.com/reesun1130/SYQRCodeDemo
- **GVP Project**: No

## Statistics

- **Stars**: 5
- **Forks**: 4
- **Created**: 2015-04-02
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: barcode, ios-modules

**Tags**: None

## README

# QRCode Demo

SYQRCodeDemo:仿微信二维码扫描

### Latest
* swift实现：<a href="https://github.com/reesun1130/SYQRCodeDemoSwift">SYQRCodeDemoSwift</a>
* 修复bug，优化实现和用户体验，更加简单易用（新增类似微信的打开动画效果）
* 修改相机权限判断
* 添加新的类，拆分view
* 使用时直接拖动SYQRCodeViewController文件夹到工程里面即可
* 7.0及以上系统：如果只是简单的扫描二维码不需要添加第三方库，移除ZXingObjC即可

### New

- 支持读取图片二维码；

	需要支持iOS 7及以上系统则需依赖<a href="https://github.com/TheLevelUp/ZXingObjC">ZXingObjC</a>

	iOS >= 8.0，直接采用系统的即可；

- 支持开启闪光灯
- 支持生成二维码图片



### Introduction:基于<a href="https://github.com/reesun1130/SYQRCodeDemo">SYQRCodeDemo</a>





![intro png](https://github.com/sauchye/SYQRCodeDemo/raw/master/intro.PNG)



### Example：将SYQRCodeViewController拖入工程即可使用

``` objective-c
NSData *stringData = [text dataUsingEncoding: NSUTF8StringEncoding];
//生成
CIFilter *qrFilter = [CIFilter filterWithName:@"CIQRCodeGenerator"];
[qrFilter setValue:stringData forKey:@"inputMessage"];
[qrFilter setValue:@"M" forKey:@"inputCorrectionLevel"];

UIColor *onColor = [UIColor whiteColor];
UIColor *offColor = [UIColor darkGrayColor];

//上色
CIFilter *colorFilter = [CIFilter filterWithName:@"CIFalseColor"
                                   keysAndValues:
                         @"inputImage",qrFilter.outputImage,
                         @"inputColor0",[CIColor colorWithCGColor:onColor.CGColor],
                         @"inputColor1",[CIColor colorWithCGColor:offColor.CGColor],
                         nil];

CIImage *qrImage = colorFilter.outputImage;

//绘制
CGSize size = CGSizeMake(width, width);
CGImageRef cgImage = [[CIContext contextWithOptions:nil] createCGImage:qrImage fromRect:qrImage.extent];
UIGraphicsBeginImageContext(size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetInterpolationQuality(context, kCGInterpolationNone);
CGContextScaleCTM(context, 1.0, -1.0);
CGContextDrawImage(context, CGContextGetClipBoundingBox(context), cgImage);
_codeImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

CGImageRelease(cgImage);
```