敲的一样的代码,为什么会出现这样的错误?
2017-05-21 19:47:59.735 ImagePickerDemo[2331:204917] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Application tried to present a nil modal view controller on target
2017-05-21 19:47:59.735 ImagePickerDemo[2331:204917] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Application tried to present a nil modal view controller on target
2017-05-21
举报