纯代码添加masonry约束注意点记录一

正确的这一种：   
 [btnCancle mas_makeConstraints:^(MASConstraintMaker *make) {
        make.width.mas_equalTo(80);
        make.height.mas_equalTo(40);
//        make.left.equalTo(view).with.offset(10);
        make.left.mas_equalTo(10);
//        make.top.equalTo(view).with.offset(10);
        make.top.mas_equalTo(10);
    }];

不正确的这一种：
   不需要make.size ,直接make.width.
    不需要make.top.equalsTo(view)with.offset(10);  ,直接make.top.mas_equalto(10);默认的话，就是相对于父控件的。
 UIButton *btnOK = [[UIButton alloc]init];
    [btnOK setTitle:@"完成" forState:UIControlStateNormal];
    [btnOK addTarget:self action:@selector(recordOk) forControlEvents:UIControlEventTouchUpInside];
    
    [view addSubview:btnOK];
    [btnOK mas_makeConstraints:^(MASConstraintMaker *make){
        make.size.width.mas_equalTo(50);
        make.size.height.mas_equalTo(40);
        make.top.equalTo(view).with.offset(10);
        make.right.equalTo(view).with.offset(-10);
    }];