Masonry自动布局

介绍，入门：

 http://www.cocoachina.com/ios/20141219/10702.html

下载：

 http://code.cocoachina.com/detail/301146/%E8%87%AA%E5%8A%A8%E5%B8%83%E5%B1%80%EF%BC%8CMasonry%E4%BB%8B%E7%BB%8D%E4%B8%8E%E4%BD%BF%E7%94%A8%E5%AE%9E%E8%B7%B5%EF%BC%9A%E5%BF%AB%E9%80%9F%E4%B8%8A%E6%89%8BAutolayout/

 1.Masonry初体验：

//
//  ViewController.m
//  MasonryTest
//
//  Created by apple on 15/6/22.
//  Copyright (c) 2015年 tqh. All rights reserved.
//

#import "ViewController.h"
#import "Masonry.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // 防止block中的循环引用
   
    [self initView4];
}

- (void)initView1 {
    UIButton *button = [[UIButton alloc]init];
    button.backgroundColor = [UIColor redColor];
    [self.view addSubview:button];
    
    [self Masonry:button];
}

//居中约束
- (void)Masonry:(UIView *)view {
     __weak typeof (self) weakSelf = self;
    [view mas_makeConstraints:^(MASConstraintMaker *make) {
        //大小约束
        make.size.mas_equalTo(CGSizeMake(100, 100));
        
        //居中约束
        make.center.equalTo(weakSelf.view);
    }];
    
}

//固定大小，位置调整

- (void)initView2 {
    
    UIButton * blackBtn = [UIButton new];
    blackBtn.backgroundColor = [UIColor blackColor];
    [self.view addSubview:blackBtn];
    
    [blackBtn mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.mas_equalTo(100);
        make.left.mas_equalTo(50);
        make.size.mas_equalTo(CGSizeMake(100, 100));
        
    }];
    
    UIButton * redBtn = [UIButton new];
    redBtn.backgroundColor = [UIColor redColor];
    [self.view addSubview:redBtn];
    
    [redBtn mas_makeConstraints:^(MASConstraintMaker *make) {
        //使用 and 连接
        make.size.and.top.equalTo(blackBtn);
        //添加右边距约束（这里的间距是有方向性的，左、上边距约束正数，右、下边距约束为负数）
        make.right.mas_equalTo(-50);
        
    }];
}

- (void)initView3 {
    // 防止block中的循环引用
    __weak typeof (self) weakSelf = self;
    UIButton * redBtn = [[UIButton alloc]init];
    redBtn.backgroundColor = [UIColor redColor];
    [self.view addSubview:redBtn];
    
    [redBtn mas_makeConstraints:^(MASConstraintMaker *make) {
        
        make.top.and.left.mas_equalTo(20);
        make.right.mas_equalTo(-50);
//        make.bottom.and.right.mas_equalTo(-20);
        
    }];
    
    UIButton * blueBtn = [UIButton new];
    blueBtn.backgroundColor = [UIColor blueColor];
    [self.view addSubview:blueBtn];
    
    [blueBtn mas_makeConstraints:^(MASConstraintMaker *make) {
       
        make.bottom.and.right.mas_equalTo(-20);
        //让他等于redBtn的高度
        make.height.equalTo(redBtn);
        //添加上左约束
        make.top.equalTo(redBtn.mas_bottom).offset(0);
        make.left.equalTo(weakSelf.view.mas_centerX).offset(-40);
        
    }];
   
}

- (void)initView4 {
    // 左边的按键
    UIButton * firstBtn = [[UIButton alloc]init];
    firstBtn.backgroundColor = [UIColor redColor];
    [self.view addSubview:firstBtn];
    
    // 右边的按键
    UIButton * secondBtn = [[UIButton alloc]init];
    secondBtn.backgroundColor = [UIColor blueColor];
    [self.view addSubview:secondBtn];
    int padding1 = 10;
    // 给左边视图添加约束
    [firstBtn mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.mas_equalTo(100);
        make.left.mas_equalTo(20);
        make.right.equalTo(secondBtn.mas_left).with.offset(-padding1);
        
    }];
    
    // 给右边视图添加约束
    [secondBtn mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.mas_equalTo(100);
        make.right.mas_equalTo(-20);
        make.width.equalTo(firstBtn);
    }];
}

- (void)initView4Test {
    for (int i = 0; i < 4; i ++) {

        UIView * firstBtn = [[UIView alloc]init];
        firstBtn.backgroundColor = [UIColor redColor];
        [self.view addSubview:firstBtn];
        [firstBtn mas_makeConstraints:^(MASConstraintMaker *make) {
            make.top.mas_equalTo(100);
            make.size.mas_equalTo(CGSizeMake(50, 50));
            make.left.mas_equalTo(i*60);
        }];
        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapPressed:)];
        firstBtn.tag = 10 +i;
        firstBtn.userInteractionEnabled = YES;
        [firstBtn addGestureRecognizer:tap];
    }
   
}

- (void)tapPressed:(UITapGestureRecognizer *)sender {
    NSInteger index = sender.view.tag;
    NSLog(@"%ld",index);
}

@end

 有待进一步熟悉

 补：

自动布局动态计算cell的高度
http://www.ifun.cc/blog/2014/02/21/dong-tai-ji-suan-uitableviewcellgao-du-xiang-jie/
http://blog.sunnyxx.com/2015/05/17/cell-height-calculation/