- (void)viewDidLoad {
[super viewDidLoad];
_textField.delegate = self;

_cuiPickerView = [[CuiPickerView alloc]init];
_cuiPickerView.frame = CGRectMake(0, self.view.frame.size.height, self.view.frame.size.width, 200);

//这一步很重要
_cuiPickerView.myTextField = _textField;

_cuiPickerView.delegate = self;
_cuiPickerView.curDate=[NSDate date];
[self.view addSubview:_cuiPickerView];

}

//开始编辑
-(void)textFieldDidBeginEditing:(UITextField *)textField
{
textField.inputView = [[UIView alloc]initWithFrame:CGRectZero];
[_cuiPickerView showInView:self.view];
}

//赋值给textField
-(void)didFinishPickView:(NSString *)date
{
self.dataString = date;
_textField.text = date;
}