源码-0203-Masonry

Masonry

make.attr.equalto.+{ @[ , , , ];    number ->@20;      label / label.mas_left(控件，控件属性) |@（self.button.size.with） }

约束是可以连写的：make.right.equalTo(superview.mas_right).with.offset(-padding.right);

make.edges.equalTo(superview).insets(UIEdgeInsetsMake(5,10,15,20));

prioritize 优先级

make.left.greaterThanOrEqualTo(label.mas_left).with.priorityLow();
make.top.equalTo(label.mas_top).with.priority(600);

 导入masonry插件（拖入文件夹）

删除重复出现的info.plis文件

//
//  ViewController.m
//  03-Masonry使用
#import "ViewController.h"
//只要添加了了这个宏，就不用mas_前缀
#define MAS_SHORTHAND
//只要添加了这宏，equalTo就等价于mas_equalTo
#define MAS_SHORTHAND_GLOBALS

#import "Masonry.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    // 蓝色控件
    UIView *blueView = [[UIView alloc] init];
    blueView.backgroundColor = [UIColor blueColor];
    [self.view addSubview:blueView];
    
    // 红色控件
    UIView *redView = [[UIView alloc] init];
    redView.backgroundColor = [UIColor redColor];
    [self.view addSubview:redView];
    
    // 添加约束
    CGFloat margin = 20;
    CGFloat height = 50;
    [blueView makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.view.left).offset(margin);
        make.right.equalTo(redView.left).offset(-margin);
        make.bottom.equalTo(self.view.bottom).offset(-margin);
        make.height.equalTo(height);
        make.top.equalTo(redView.top);
        make.bottom.equalTo(redView.bottom);
        make.width.equalTo(redView.width);
    }];
    
    [redView makeConstraints:^(MASConstraintMaker *make) {
        make.right.equalTo(self.view.right).offset(-margin);
    }];
}

- (void)test4
{
    // 蓝色控件
    UIView *blueView = [[UIView alloc] init];
    blueView.backgroundColor = [UIColor blueColor];
    [self.view addSubview:blueView];
    
    // 添加约束
    [blueView makeConstraints:^(MASConstraintMaker *make) {
        //        make.width.equalTo(self.view.width).multipliedBy(0.5);
        //        make.height.equalTo(self.view.height).multipliedBy(0.5).offset(-100);
        make.width.equalTo(100);
        make.height.equalTo(100);
        make.centerX.equalTo(self.view.centerX);
        make.centerY.equalTo(self.view.centerY);
    }];
}

- (void)test3
{
    // 蓝色控件
    UIView *blueView = [[UIView alloc] init];
    blueView.backgroundColor = [UIColor blueColor];
    [self.view addSubview:blueView];
    
    // 距离父控件四周都是50间距
    //    [blueView mas_makeConstraints:^(MASConstraintMaker *make) {
    //        make.left.mas_equalTo(self.view.mas_left).offset(50);
    //        make.right.mas_equalTo(self.view.mas_right).offset(-50);
    //        make.top.mas_equalTo(self.view.mas_top).offset(50);
    //        make.bottom.mas_equalTo(self.view.mas_bottom).offset(-50);
    //    }];
    //    [blueView mas_makeConstraints:^(MASConstraintMaker *make) {
    //        make.left.mas_equalTo(self.view).offset(50);
    //        make.right.mas_equalTo(self.view).offset(-50);
    //        make.top.mas_equalTo(self.view).offset(50);
    //        make.bottom.mas_equalTo(self.view).offset(-50);
    //    }];
    //    [blueView mas_makeConstraints:^(MASConstraintMaker *make) {
    //        make.left.offset(50);
    //        make.right.offset(-50);
    //        make.top.offset(50);
    //        make.bottom.offset(-50);
    //    }];
    //    [blueView mas_makeConstraints:^(MASConstraintMaker *make) {
    //        make.left.top.offset(50);
    //        make.right.bottom.offset(-50);
    //    }];
    [blueView mas_makeConstraints:^(MASConstraintMaker *make) {
  //    make.edges.mas_equalTo(self.view).insets(UIEdgeInsetsMake(50, 50, 50, 50));
        make.center.mas_equalTo(self.view).insets(UIEdgeInsetsZero );
    }];
}

- (void)test2
{
    // 蓝色控件
    UIView *blueView = [[UIView alloc] init];
    blueView.backgroundColor = [UIColor blueColor];
    [self.view addSubview:blueView];
    
    // 居中（水平+垂直）
    // 尺寸是父控件的一半
    [blueView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.size.mas_equalTo(self.view).multipliedBy(0.5);
        make.center.mas_equalTo(self.view);
        //        make.centerX.mas_equalTo(self.view);
        //        make.centerY.mas_equalTo(self.view);
    }];
}

- (void)test1
{
    // 蓝色控件
    UIView *blueView = [[UIView alloc] init];
    blueView.backgroundColor = [UIColor blueColor];
    [self.view addSubview:blueView];
    
    // 尺寸限制：100x100
    // 位置：粘着父控件右下角，间距是20
    
    // 这个方法只会添加新的约束
    //    [blueView mas_makeConstraints:^(MASConstraintMaker *make) {
    //        // 宽度约束
    //        make.width.equalTo(@100);
    //        // 高度约束
    //        make.height.equalTo(@100);
    //        // 右边
    //        make.right.equalTo(self.view.mas_right).offset(-20);
    //        // 顶部
    //        make.top.equalTo(self.view.mas_top).offset(20);
    //    }];
    
    //    [blueView mas_makeConstraints:^(MASConstraintMaker *make) {
    //        // 宽度约束
    //        make.width.mas_equalTo(100);
    //        // 高度约束
    //        make.height.mas_equalTo(100);
    //        // 右边
    //        make.right.equalTo(self.view).offset(-20);
    //        // 顶部
    //        make.top.equalTo(self.view).offset(20);
    //    }];
    
    //    [blueView mas_makeConstraints:^(MASConstraintMaker *make) {
    //        // 宽度高度约束
    //        make.width.height.mas_equalTo(100);
    //        // 右边
    //        make.right.equalTo(self.view).offset(-20);
    //        // 顶部
    //        make.top.equalTo(self.view).offset(20);
    //    }];
    
    //    [blueView mas_makeConstraints:^(MASConstraintMaker *make) {
    //        // 宽度高度约束
    ////        make.size.equalTo([NSValue valueWithCGSize:CGSizeMake(100, 100)]);
    ////        make.size.mas_equalTo(CGSizeMake(100, 100));
    //        make.size.mas_equalTo(100);
    //        // 右边
    //        make.right.equalTo(self.view).offset(-20);
    //        // 顶部
    //        make.top.equalTo(self.view).offset(20);
    //    }];
    
    [blueView mas_makeConstraints:^(MASConstraintMaker *make) {
        // 宽度高度约束
        make.height.mas_equalTo(self.view).multipliedBy(0.5).offset(-50);
        // 右边
        make.right.mas_equalTo(self.view).offset(-20);
        //        make.right.offset(-20);
        // 顶部
        make.top.mas_equalTo(self.view).offset(20);
        //        make.top.offset(20);
    }];
    
    /**
     mas_equalTo：这个方法会对参数进行包装
     equalTo：这个方法不会对参数进行包装
     mas_equalTo的功能强于 > equalTo
     */
}
/**
 约束的类型：
 1.尺寸：widthheightsize
 2.边界：leftleading
ight	railing	opottom
 3.中心点：centercenterXcenterY
 4.边界：edges
 */

/**
 // 这个方法会将以前的所有约束删掉，添加新的约束
 [blueView mas_remakeConstraints:^(MASConstraintMaker *make) {
 
 }];
 
 // 这个方法将会覆盖以前的某些特定的约束
 [blueView mas_updateConstraints:^(MASConstraintMaker *make) {
 
 }];
 */
@end