Ecosyste.ms: Awesome
An open API service indexing awesome lists of open source software.
https://github.com/lb2281075105/lbqrcode
仿微信二维码、条形码扫描、生成二维码、保存二维码
https://github.com/lb2281075105/lbqrcode
objective-c qrcode
Last synced: 2 days ago
JSON representation
仿微信二维码、条形码扫描、生成二维码、保存二维码
- Host: GitHub
- URL: https://github.com/lb2281075105/lbqrcode
- Owner: lb2281075105
- License: apache-2.0
- Created: 2018-11-14T03:25:22.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2018-11-14T06:36:52.000Z (about 6 years ago)
- Last Synced: 2024-11-10T22:31:28.876Z (2 months ago)
- Topics: objective-c, qrcode
- Language: Objective-C
- Homepage:
- Size: 1.16 MB
- Stars: 3
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# LBQRCode
微信二维码、扫描、生成二维码、保存二维码
#### 使用说明
直接导入`LBQRCode`文件夹到自己项目中,调用相应的`LBQRCodeScanController`和 `LBCreateQRCodeController`控制器就可以了
#### 扫描二维码
##### 1. 首先倒入框架
```
#import
```
###### 2. 遵守协议
```
```
###### 3. 主要用到的属性设置
```
// 捕获设备，默认后置摄像头
@property (strong, nonatomic) AVCaptureDevice * device;
// 输入设备
@property (strong, nonatomic) AVCaptureDeviceInput * input;
// 输出设备，需要指定他的输出类型及扫描范围
@property (strong, nonatomic) AVCaptureMetadataOutput * output;
// AVFoundation框架捕获类的中心枢纽，协调输入输出设备以获得数据
@property (strong, nonatomic) AVCaptureSession * session;
// 展示捕获图像的图层，是CALayer的子类
@property (strong, nonatomic) AVCaptureVideoPreviewLayer * preview;
```
##### 4.拉起本地相册二维码
```
- (void)chooseButtonClick{
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
// 关闭扫描
[self stopScan];
//1. 弹出系统相册
UIImagePickerController *pickVC = [[UIImagePickerController alloc]init];
//2. 设置照片来源
/**
UIImagePickerControllerSourceTypePhotoLibrary,相册
UIImagePickerControllerSourceTypeCamera,相机
UIImagePickerControllerSourceTypeSavedPhotosAlbum,照片库
*/
pickVC.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
//3. 设置代理
pickVC.delegate = self;
//4.转场动画
self.modalTransitionStyle=UIModalTransitionStyleFlipHorizontal;
[self presentViewController:pickVC animated:YES completion:nil];
}else{
[self showAlertViewWithTitle:@"打开失败" withMessage:@"相册打开失败。设备不支持访问相册，请在设置->隐私->照片中进行设置！"];
}
}
```
#### 生成二维码
##### 1.二维码的生成
```
/**
* 1.生成CIFilter(滤镜)对象
*/
CIFilter *filter = [CIFilter filterWithName:@"CIQRCodeGenerator"];
/**
* 2.恢复滤镜默认设置
*/
[filter setDefaults];
/**
* 3.设置数据(通过滤镜对象的KVC)
*/
// 存放的信息
NSString *info = @"hahahahhahahaha";
// 把信息转化为NSData
NSData *infoData = [info dataUsingEncoding:NSUTF8StringEncoding];
// 滤镜对象kvc存值
[filter setValue:infoData forKeyPath:@"inputMessage"];
/**
* 4.生成二维码
*/
CIImage *outImage = [filter outputImage];
// imageView.image = [UIImage imageWithCIImage:outImage];//不处理图片模糊,故而调用下面的信息
self.codeImage.image = [outImage createNonInterpolatedWithSize:150];
```
#### 保存二维码
##### 1. 保存到本地相册
```
UIGraphicsBeginImageContext(self.view.bounds.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
// 获取图片
UIImage * image = UIGraphicsGetImageFromCurrentImageContext();
// 关闭上下文
UIGraphicsEndImageContext();
completion(image);
/**
* 将图片保存到本地相册
*/
UIImageWriteToSavedPhotosAlbum(image, self , @selector(saveImage:didFinishSavingWithError:contextInfo:), nil);
```