ARC Semantic Issue Group:No known instance method for selector 'respondsToSelector:'

新接手了一个项目发现有个问题,ARC Semantic Issue Group:No known instance method for selector 'respondsToSelector:'

ARC Semantic Issue Group:No known instance method for selector 'respondsToSelector:'_第1张图片
Snip20170922_1.png
ARC Semantic Issue Group:No known instance method for selector 'respondsToSelector:'_第2张图片
Snip20170922_2.png

由于respondsToSelector方法是继承自NSObject的,所以代理方法必须继承自NSObject;

ARC Semantic Issue Group:No known instance method for selector 'respondsToSelector:'_第3张图片
原代码
ARC Semantic Issue Group:No known instance method for selector 'respondsToSelector:'_第4张图片
声明的协议protocol从NSObject继承

解决问题

你可能感兴趣的:(ARC Semantic Issue Group:No known instance method for selector 'respondsToSelector:')