UIImageView установление изображения изображения после установки из рулона камеры

Question

Ориентация изображения изменяется после установки его из рулона камеры в UIImage.

UIImagePickerController *controller = [[UIImagePickerController alloc] init]; 
controller.sourceType = UIImagePickerControllerSourceTypeCamera; 
controller.allowsEditing = NO; 
controller.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType: UIImagePickerControllerSourceTypeCamera]; 
controller.delegate = self; 
[self.navigationController presentViewController: controller animated: YES completion: nil]; 


- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ 

    [self.navigationController dismissViewControllerAnimated: YES completion: nil]; 
    UIImage *image = [info valueForKey: UIImagePickerControllerOriginalImage]; 
    NSData *imageData = UIImageJPEGRepresentation(image, 0.1); 
    headerCell.userProfileImageView.image = [UIImage imageWithData:imageData]; 
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
    NSString *documentsPath = [paths objectAtIndex:0]; //Get the docs directory 
    NSString *filePath = [documentsPath stringByAppendingPathComponent:@"profileImage.png"]; //Add the file name 
    NSData *pngData = UIImagePNGRepresentation(image); 
    [pngData writeToFile:filePath atomically:YES]; 
} 

С Фотопленкой набор его ориентация неправильно, но из библиотеки фотографий ее настройки отлично.

У кого-то была такая же проблема, как это, пожалуйста, дайте нам знать ваши комментарии, чтобы исправить эту проблему.

Answer 1

От резьбы here и ниже ответ (по Дилип Rajkumar):

https://stackoverflow.com/a/10602363/5575752

Вы можете использовать ниже метод для управления ориентацией изображения после получения изображения: (Изменить метод согласно вашему требованию)

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ 

    [self.navigationController dismissViewControllerAnimated: YES completion: nil]; 

    UIImage *image = [self scaleAndRotateImage: [info objectForKey:UIImagePickerControllerOriginalImage]]; 

    NSData *imageData = UIImageJPEGRepresentation(image, 0.1); 
    headerCell.userProfileImageView.image = [UIImage imageWithData:imageData]; 
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
    NSString *documentsPath = [paths objectAtIndex:0]; //Get the docs directory 
    NSString *filePath = [documentsPath stringByAppendingPathComponent:@"profileImage.png"]; //Add the file name 
    NSData *pngData = UIImagePNGRepresentation(image); 
    [pngData writeToFile:filePath atomically:YES]; 
} 

- (UIImage *)scaleAndRotateImage:(UIImage *) image { 
    int kMaxResolution = 320; 

    CGImageRef imgRef = image.CGImage; 

    CGFloat width = CGImageGetWidth(imgRef); 
    CGFloat height = CGImageGetHeight(imgRef); 


    CGAffineTransform transform = CGAffineTransformIdentity; 
    CGRect bounds = CGRectMake(0, 0, width, height); 
    if (width > kMaxResolution || height > kMaxResolution) { 
     CGFloat ratio = width/height; 
     if (ratio > 1) { 
      bounds.size.width = kMaxResolution; 
      bounds.size.height = bounds.size.width/ratio; 
     } 
     else { 
      bounds.size.height = kMaxResolution; 
      bounds.size.width = bounds.size.height * ratio; 
     } 
    } 

    CGFloat scaleRatio = bounds.size.width/width; 
    CGSize imageSize = CGSizeMake(CGImageGetWidth(imgRef), CGImageGetHeight(imgRef)); 
    CGFloat boundHeight; 
    UIImageOrientation orient = image.imageOrientation; 
    switch(orient) { 

     case UIImageOrientationUp: //EXIF = 1 
      transform = CGAffineTransformIdentity; 
      break; 

     case UIImageOrientationUpMirrored: //EXIF = 2 
      transform = CGAffineTransformMakeTranslation(imageSize.width, 0.0); 
      transform = CGAffineTransformScale(transform, -1.0, 1.0); 
      break; 

     case UIImageOrientationDown: //EXIF = 3 
      transform = CGAffineTransformMakeTranslation(imageSize.width, imageSize.height); 
      transform = CGAffineTransformRotate(transform, M_PI); 
      break; 

     case UIImageOrientationDownMirrored: //EXIF = 4 
      transform = CGAffineTransformMakeTranslation(0.0, imageSize.height); 
      transform = CGAffineTransformScale(transform, 1.0, -1.0); 
      break; 

     case UIImageOrientationLeftMirrored: //EXIF = 5 
      boundHeight = bounds.size.height; 
      bounds.size.height = bounds.size.width; 
      bounds.size.width = boundHeight; 
      transform = CGAffineTransformMakeTranslation(imageSize.height, imageSize.width); 
      transform = CGAffineTransformScale(transform, -1.0, 1.0); 
      transform = CGAffineTransformRotate(transform, 3.0 * M_PI/2.0); 
      break; 

     case UIImageOrientationLeft: //EXIF = 6 
      boundHeight = bounds.size.height; 
      bounds.size.height = bounds.size.width; 
      bounds.size.width = boundHeight; 
      transform = CGAffineTransformMakeTranslation(0.0, imageSize.width); 
      transform = CGAffineTransformRotate(transform, 3.0 * M_PI/2.0); 
      break; 

     case UIImageOrientationRightMirrored: //EXIF = 7 
      boundHeight = bounds.size.height; 
      bounds.size.height = bounds.size.width; 
      bounds.size.width = boundHeight; 
      transform = CGAffineTransformMakeScale(-1.0, 1.0); 
      transform = CGAffineTransformRotate(transform, M_PI/2.0); 
      break; 

     case UIImageOrientationRight: //EXIF = 8 
      boundHeight = bounds.size.height; 
      bounds.size.height = bounds.size.width; 
      bounds.size.width = boundHeight; 
      transform = CGAffineTransformMakeTranslation(imageSize.height, 0.0); 
      transform = CGAffineTransformRotate(transform, M_PI/2.0); 
      break; 

     default: 
      [NSException raise:NSInternalInconsistencyException format:@"Invalid image orientation"]; 

    } 

    UIGraphicsBeginImageContext(bounds.size); 

    CGContextRef context = UIGraphicsGetCurrentContext(); 

    if (orient == UIImageOrientationRight || orient == UIImageOrientationLeft) { 
     CGContextScaleCTM(context, -scaleRatio, scaleRatio); 
     CGContextTranslateCTM(context, -height, 0); 
    } 
    else { 
     CGContextScaleCTM(context, scaleRatio, -scaleRatio); 
     CGContextTranslateCTM(context, 0, -height); 
    } 

    CGContextConcatCTM(context, transform); 

    CGContextDrawImage(UIGraphicsGetCurrentContext(), CGRectMake(0, 0, width, height), imgRef); 
    UIImage *imageCopy = UIGraphicsGetImageFromCurrentImageContext(); 
    UIGraphicsEndImageContext(); 

    return imageCopy; 
}