使用Masonry给视图添加约束

[问天几高]

我的代码是这样的:
self.childView= [[UIView alloc]initWithFrame:screen];
[self.view addSubview: self.childView];
self.childView.backgroundColor = [UIColor redColor];

UIButton *button = [[UIButton alloc]init];
[self.childView addSubview: button];
[button mas_makeConstraints:^(MASConstraintMaker *make) {

make.edges.mas_equalTo(self.childView).with.insets(UIEdgeInsetsMake(100, 200, 100, 100));
}];

使用masonry来给视图自动添加约束,思路-->父视图上面添加一个子视图,该子视图上面把所有要显示的视图都添加在它上面

但运行报错:
Exception:-[UIButton mas_makeConstraints:]: unrecognized selector sent to instance 0x7feef061f520

大神求帮助

[不担心]

#import "Masonry.h" 这一句有没有加?

[问天几高]

头文件导入了..

[baidu_35914310]

Build Settings ->Linking ->Other Librarian Flags Add $(inherited)

[qq_37138870]

楼主问题解决了没有，怎么解决的，我现在也出现这个问题了