@interface NewProductViewController : UIViewController <UINavigationControllerDelegate, UIImagePickerControllerDelegate, UITextFieldDelegate>

@property (nonatomic, strong) UIImage *image;
@property (nonatomic, strong) UIImagePickerController *imagePicker;
@property (nonatomic, weak) IBOutlet UIImageView *imageView;

- (UIImage *)imageWithImage:(UIImage *)sourceImage scaledToHeight:(float) i_height;

@end

- (UIImage *)imageWithImage:(UIImage *)sourceImage scaledToHeight:(float) i_height {
    float oldHeight = sourceImage.size.height;
    float scaleFactor = i_height / oldHeight;

    float newWidth = sourceImage.size.width* scaleFactor;
    float newHeight = oldHeight * scaleFactor;

    UIGraphicsBeginImageContext(CGSizeMake(newWidth, newHeight));
    [sourceImage drawInRect:CGRectMake(0, 0, newWidth, newHeight)];
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return newImage;
}

- (IBAction)createProduct:(id)sender {
    UIImage *newImage = [self imageWithImage:self.image scaledToHeight:1000.f];
    UIImage *thumbnailImage = [self imageWithImage:self.image scaledToHeight:410.f];

    NSData *imageData = UIImageJPEGRepresentation(newImage, 0.8f);
    NSData *thumbnailData = UIImageJPEGRepresentation(thumbnailImage, 0.8f);
}