invalid mode 'kCFRunLoopCommonModes' provided to CFRunLoopRunSpecific - break on _CFRunLoopError_RunCalledWithInvalidMode to debug. This message will only appear once per execution
解決辦法請看一下xib中是否正確選擇了target
圖
其他原因導致請參考:
http://www.lxweimin.com/p/b54065e90e13
http://www.lxweimin.com/p/a73f22d1c802