识别二维码

-(void)dealLongPress:(UIGestureRecognizer*)gesture{

if(gesture.state==UIGestureRecognizerStateBegan){

UIImageView*tempImageView=(UIImageView*)gesture.view;

if(tempImageView.image){

//1. 初始化扫描仪，设置设别类型和识别质量

CIDetector*detector = [CIDetector detectorOfType:CIDetectorTypeQRCode context:nil options:@{ CIDetectorAccuracy : CIDetectorAccuracyHigh }];

//2. 扫描获取的特征组

NSArray *features = [detector featuresInImage:[CIImage imageWithCGImage:tempImageView.image.CGImage]];

//3. 获取扫描结果

CIQRCodeFeature *feature = [features objectAtIndex:0];

NSString *scannedResult = feature.messageString;

UIAlertView * alertView = [[UIAlertView alloc]initWithTitle:@"扫描结果" message:scannedResult delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];

[alertView show];

}else {

UIAlertView * alertView = [[UIAlertView alloc]initWithTitle:@"扫描结果" message:@"您还没有生成二维码" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];

[alertView show];

}

}

}