http://stackoverflow.com/questions/3205357/popup-uipicker-instead-of-keyboard 源码在这里： https://github.com/larsacus/LARSSlidingPicker

1 因为我用的xib实现的添加picker 和textfiled的， @interface ViewController : UIViewController<UITextFieldDelegate,UIPickerViewDelegate,UIPickerViewDataSource>{UIToolbar *tool;//主要用这存放按钮}@property (retain, nonato