scale Image in an UIButton to AspectFit?

Question

I want to add an image to a UIButton, and also want to scale my image to fit with the UIButton (make image smaller). Please show me how to do it.

This is what I have tried, but it does't work:

• Adding image to button and using setContentMode:

[self.itemImageButton setImage:stretchImage forState:UIControlStateNormal];
[self.itemImageButton setContentMode:UIViewContentModeScaleAspectFit];

• Making a "stretch image":

UIImage *stretchImage = [updatedItem.thumbnail stretchableImageWithLeftCapWidth:0 topCapHeight:0];

Answer 1

None of the answers here really worked for me, I solved the problem with the following code:

button.contentMode = UIViewContentModeScaleToFill;
button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentFill;
button.contentVerticalAlignment = UIControlContentVerticalAlignmentFill;

You can do this in the Interface Builder as well.

Answer 2

I have a method that does it for me. The method takes UIButton and makes the image aspect fit.

-(void)makeImageAspectFitForButton:(UIButton*)button{
    button.imageView.contentMode=UIViewContentModeScaleAspectFit;
    button.contentHorizontalAlignment=UIControlContentHorizontalAlignmentFill;
    button.contentVerticalAlignment=UIControlContentVerticalAlignmentFill;
}

Answer 3

If you simply want to reduce your button image:

yourButton.contentMode = UIViewContentModeScaleAspectFit;
yourButton.imageEdgeInsets = UIEdgeInsetsMake(10, 10, 10, 10);

Answer 4

For Xamarin.iOS (C#):

    myButton.VerticalAlignment = UIControlContentVerticalAlignment.Fill;
    myButton.HorizontalAlignment = UIControlContentHorizontalAlignment.Fill;
    myButton.ImageView.ContentMode = UIViewContentMode.ScaleAspectFit;