iOS8 原生图片二维码识别

/*!
*  @author iTaaCY, 16-06-16
*
*  @brief iOS8 原生图片二维码识别
*  @param image
*  @return
*/
-(NSString *)nativeQRDecoder:(UIImage *)image{
CIImage *ciImage = image.CIImage;
CIDetector *detector = [CIDetector detectorOfType:CIDetectorTypeQRCode context:nil options:nil];
NSArray *arr = [detector featuresInImage:ciImage];
NSString *result = nil;
if (arr.count>0) {
CIQRCodeFeature *feature = arr[0];
result = feature.messageString;
}
return result;
}