Short Desciption

FrameLayout is a small tool for positioning, sizing and arranging views without using CGRects. FrameLayout also provides sets of convinient read-write properties that extract/set discrete values from view's frame, like: width, height, minX/Y, maxX/Y.

How it works

FrameLayout is defined as a category on UIView class. It contains set of methods to configure view's sizes and positions in relation to its superviews or other views. Under the hood all FrameLayout methods calculates and sets view.frame property.

Instalation

Pods instalation

1. Add the pod FrameLayout to your Podfile:

   pod 'FrameLayout'
   

2. Run pod install from Terminal, then open your app's .xcworkspace file to launch yout IDE.

3. Import the header file:

   #import "UIView+PLFrameLayout.h"
   

Manual instalation

1. Drag and drop UIView+PLFrameLayout.h and UIView+PLFrameLayout.m to your project;
2. In File Inspector, make sure that UIView+PLFrameLayout.m belongs to your app target;
3. Add #import UIView+PLFrameLayout.h to your file.

Usage

To make sure that superview's frame is already set, you should place all methods from FrameLayout library in your view's -layoutSubviews method.

Examples

Aligning to top-left corner with 50 points margin:

- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        UIView *view = [UIView new]; // Calls `initWithFrame:CGRectZero` by default.
        [self addSubviews:view];
        self.myView = view;
    }
}

- (void)layoutSubviews {
    [super layoutSubviews];
    self.myView.pl_size = CGSizeMake(70.0, 70.0);
    [self.myView pl_alignToSuperView:NSLayoutAttributeTop withMargin:50.0];
    [self.myView pl_alignToSuperView:NSLayoutAttributeLeft withMargin:50.0];
}

For more, see example app.

Contribution

Frame Layout project is on early stage. Feel free to contribute by pull requests.

License

FrameLayout is released under a MIT License. See LICENSE file for details.