自定义数字键盘，可在iPhone和iPad上使用
可选择3个代理方法 -(BOOL) numberKeyboardShouldInput:(WTNumberKeyBoard*)keyBoardView inPutNumBer:(NSString*) number; -(BOOL) numberKeyboardShouldBackspace:(WTNumberKeyBoard*)keyBoardView; -(BOOL) numberKeyboardShouldReturn:(WTNumberKeyBoard*)keyBoardView;
示例 -(BOOL)numberKeyboardShouldInput:(WTNumberKeyBoard *)keyBoardView inPutNumBer:(NSString *)number { keyBoardView.superTextField.text = [NSString stringWithFormat:@"%@",number]; return NO; }
-(BOOL)numberKeyboardShouldInput:(WTNumberKeyBoard *)keyBoardView inPutNumBer:(NSString *)number { NSLog(@"%@",keyBoardView.superTextField.text); return YES; }