用背景图像覆盖UIView

Question

Is it possible to overlay UIView with an image without using UIImageView from the Interface Builder?

If not, how would you accomplish the same in code?

Answer 1

From the UIView documentation:

Image-based backgrounds - For views that display relatively static content, consider using a UIImageView object with gesture recognizers instead of subclassing and drawing the image yourself. Alternatively, you can also use a generic UIView object and assign your image as the content of the view's CALayer object.

Using the second option, to set someView to have a background of yourImage.png :

someView.layer.contents = (id)[[UIImage imageNamed:@"yourImage.png"] CGImage];

Answer 2

if by Overlying a UIView you mean painting its background with an image, it can be done like this:

someView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"yourImage.png"]];

You could also add a new UIImageView that covers your UIView by code, Init your UIImageView with the same frame Rect as your UIView and add it as a subview.