UIView-Move

Purpose

It's too tidious to reassign unchanged frame values everytime you want to move your UIView, even though you only change a single parameter. UIView-Move supplies helper getter/setter methods for these situations.

Installation

Copy UIView-Move.h and UIView-Move.m files to your project. Or use Cocoapods

pod 'UIView-Move'

Usage

Import category to the class you want to use it in, or

#import "UIView+Move.h"

//Creating a black square to test on
UIView *view = [UIView new];
view.backgroundColor = [UIColor blackColor];
view.frame = CGRectMake(0, 0, 100, 100);
[someView addSubview:view];

//Moving our view around
view.x = 200;
view.y = 250;

//Resizing
view.width = 150;
view.height = 150;

You can position your view relative its parent's frame

//Following lines will position our rectangle at the center of it's super
view.left = view.superview.width/2.0 - view.width/2.0;
view.top = view.superview.height/2.0 - view.height/2.0;

//This will snap the box to bottom right of superviews frame
view.right = 0;
view.bottom = 0;

//Animates the box to the top left
[UIView animateWithDuration:1 animations:^{
  view.top = 0;
  view.x = 0;
}];

Or you can position the view's center relative to center of it's parent frame

//Places view to middle of its parent
view.midX = 0;
view.midY = 0;