KeyboardRobin:KeyboardRobin帮助您制作键盘动画

#鸣谢 该项目是改写了 @nixzhu 作者的 Swift 版本，特此感谢作者 @nixzhu。因为工作需要在 Objective-C 中实现，所以用 Objective-C 重写了一遍，大家各取所需。 KeyboardRobin We may need keyboard infomation from keyboard notification to do animation, but the approach is complicated and easy to make mistakes. But KeyboardRobin will make it simple & easy. Example #import "KeyboardRobin.h" Do animation with keyboard appear/disappear: self.keyboardRobin = [[