将UIImage放入UIImageView会重置UIImageView的大小

Question

So I have a simple app in which the user selects media from their library and the media appears in a UIImageView. This works fine, except that when the image pops up in the UIImageView , the UIImageView resizes itself to the dimensions of the image. Picture for reference . The storyboard file is setup like this , with the XCode suggested constraints.

I've tried playing around with the constraints to see if I could fix it using them, but I couldn't find a solution. The only thing that sort of worked is setting the constraint equal width of the UIImage on the left-handed side to the right-handed side UIImage , but that also moved the UILabel.

I've tried setting the frame of the image.

image1.frame = CGRectMake(0, 62, 300, 270);
image2.frame = CGRectMake(300, 62, 300, 270);

Any ideas? Thanks.

Answer 1

除非您手动设置显式的宽度/高度约束，或者既设置前/后约束又设置上/下约束，否则imageView会将自身调整为其固有内容大小，在这种情况下为UIImage大小

Answer 2

I had the same problem once. I could fix it with the following constraints in the Attributes Inspector:

View Mode: Scale To Fill

Check on Autoresize Subviews.

I think it will automatically use this constraints when you set the size in the Size inspector.