Undefined symbols “_OBJC_CLASS_$_XXX” 问题
解决方法是点击工程,在targets界面中找到Build Phases,根据提示信息“XXX”来判断缺少什么文件,一般如果缺少自定义的文件,XXX会是缺少的类名,那么就在Complie Sources中加入该文件。如果缺少类库,则在Link Binary With Libraries中加入该类库。
一般加入其.m的文件
如果运行还是报错的话
把文件删除,remove reference 删除引用,然后再从finder中拖进来
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