Use of undeclared type 'UIImage' in Swift

Question

On using this function in swift and i am getting compiler error. Function is:

class func imageWithImage (imageToResize : UIImage, scaledToSize newSize : CGSize) {
    return imageToResize;
}

and the error are:

Use of undeclared type 'UIImage'
Use of undeclared type 'CGSize'

What's wrong with this..? what can i do to use UIImage in Swift..?

score 125 · Accepted Answer · answered Jul 30 '14 at 08:27

125

Did you add import UIKit to your file?

answered Jul 30 '14 at 08:27

ansible

3,569
2
18
29

Ohh... it is just silly mistake as not importing "UIkit" Because we don't have to import it manually in Objective C. – Gaurav Pandey Jul 30 '14 at 08:41

yoAlex5 · Answer 2 · 2019-09-06T11:00:15.833

I have run on this issue when duplicated a framework target on swift. As a result and .h (that is umbrella^[About] and is located in Build Phases -> Headers) were different(because it just copied from upstream target). The umbrella file contains #import <UIKit/UIKit.h>

Create <new_framework_target_name>.h and add #import <UIKit/UIKit.h>
or
Rename Product Name (Build Settings) as upstream_framework_target_name.h

Use of undeclared type 'UIImage' in Swift

2 Answers2