iOS Masonry使用

1、控件在cell上高度居中

自定义cell的.m文件
#import "YDTaoXiaoDianAddressCell.h"

@interface YDTaoXiaoDianAddressCell()

@end
@implementation YDTaoXiaoDianAddressCell

- (void)awakeFromNib {
    [super awakeFromNib];
    // Initialization code
}
-(UIButton *)mapBtn{
    if (!_mapBtn) {
        _mapBtn=[UIButton buttonWithType:UIButtonTypeCustom];
        [self addSubview:_mapBtn];
        [_mapBtn setImage:[UIImage imageNamed:@"地图icon"] forState:UIControlStateNormal];
    }
    return _mapBtn;
}
-(UIButton *)phoneBtn{
    if (!_phoneBtn) {
        _phoneBtn=[UIButton buttonWithType:UIButtonTypeCustom];
        [self addSubview:_phoneBtn];
        [_phoneBtn setImage:[UIImage imageNamed:@"电话icon 拷贝 3"] forState:UIControlStateNormal];
    }
    return _phoneBtn;
}
#pragma mark-Masonry布局
-(void)drawRect:(CGRect)rect{
   
    [self.mapBtn mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerY.equalTo(self);
        make.width.equalTo(@40);
        make.height.equalTo(@40);
        make.right.equalTo(self.phoneBtn.mas_left).offset(-20);
        
    }];
    [self.phoneBtn mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.mapBtn);
        make.width.equalTo(@40);
        make.height.equalTo(@40);
        make.right.equalTo(self.contentView.mas_right).offset(-10);
    }];
    [self layoutIfNeeded];
}

2、Masonry布局两个相邻的且有相互约束的控件，他们布局的先后顺序无所谓