如何根据超级视图调整子视图的大小和位置？

Question

I have a user resizable view created programmatically using the files downloaded from git Resize I have added a label over this view and I need the label to be at the center of the resizable view always . How can i adjust size and location of the label according to the resizable view?

Answer 1

This is a job for autolayout. Should be easily solved using

-(NSArray *)centerInView:(UIView*)superview;

or

-(NSLayoutConstraint *)centerInContainerOnAxis:(NSLayoutAttribute)axis;

in the excellent autolayout category found here:

https://github.com/jrturton/UIView-Autolayout

Examples:

[self.imageLabel centerInView:self.imageView];
[self.imageLabel centerInContainerOnAxis:NSLayoutAttributeCenterY];