相对布局 Masonry 基本使用

// 链式语法的基本操作

#import "RootViewController.h"

#import "Masonry.h"

@interface RootViewController ()

@end

@implementation RootViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view.

    

  

 [_imageMusic mas_makeConstraints:^(MASConstraintMaker *make) {

        

        make.top.equalTo(self.viewBottom).with.offset(10);

        make.left.equalTo(self.viewBottom).with.offset(20);

        make.bottom.equalTo(self.viewBottom).with.offset(-10);

        

        make.width.mas_equalTo(40);

        make.height.mas_equalTo(40);

        _imageMusic.layer.cornerRadius = 20.0f;

        _imageMusic.clipsToBounds = YES;

        

    }];

    

    

    

    self.labelMusic = [[UILabel alloc] init];

    //    self.labelMusic.backgroundColor = [UIColor yellowColor];

    self.labelMusic.textAlignment = NSTextAlignmentCenter;

    self.labelMusic.textColor = [UIColor whiteColor];

    [self.viewBottom addSubview:_labelMusic];

    

    [_labelMusic mas_updateConstraints:^(MASConstraintMaker *make) {

        

        make.top.equalTo(_imageMusic.mas_top).with.offset(0);

        make.left.equalTo(_imageMusic.mas_right).with.offset(15);

        make.right.equalTo(self.viewBottom).with.offset(-80);

        make.height.mas_equalTo(40);

        

    }];

    

    self.buttPlay = [UIButton buttonWithType:UIButtonTypeCustom];

    [self.buttPlay setImage:[UIImage imageNamed:@"iconfont-bofang"] forState:UIControlStateNormal];

    // 增加butt 点击事件

    [self.buttPlay addTarget:self action:@selector(clickPlayMusic:) forControlEvents:UIControlEventTouchUpInside];

    [self.viewBottom addSubview:_buttPlay];

    

    [_buttPlay mas_updateConstraints:^(MASConstraintMaker *make) {

        

        make.top.equalTo(_imageMusic.mas_top).with.offset(0);

        make.left.equalTo(_labelMusic.mas_right).with.offset(10);

        make.right.equalTo(self.viewBottom.mas_right).with.offset(-20);

        make.height.mas_equalTo(40);

    }];