Mapping '/var/mobile/Library/Caches/com.apple.keyboards/images/tmp.gcyBAl37' failed: 'Invalid argume

把

self.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;

改成：

 if ([UIImagePickerControllerisSourceTypeAvailable:

                 UIImagePickerControllerSourceTypePhotoLibrary])

            {

                self.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;

            }