UIImage, check if contain image

Question

If I instantiate a UIImage like this :

UIImage *image = [[UIImage alloc] init];

The object is created but it doesn\'t contain any image.

Answer 1

Check for cgImage or ciImage, in Swift 3

public extension UIImage {

  public var hasContent: Bool {
    return cgImage != nil || ciImage != nil
  }
}

CGImage: If the UIImage object was initialized using a CIImage object, the value of the property is NULL.

CIImage: If the UIImage object was initialized using a CGImageRef, the value of the property is nil.