//触发弹出日历选择器 [self.textField becomeFirstResponder];

 //懒加载 初始化一个UITextField 把UITextField的inputView设置成 RDatePicker - (UITextField *)textField {    if (_textField == nil) {        RDatePicker *pickview = [[RDatePicker alloc]init];        pickview.frame = CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 260);        pickview.complete = ^(NSInteger minute,NSInteger hour, NSInteger day, NSInteger month, NSInteger year, NSDate *date){            NSLog(@"%@",date);        };        _textField = [[UITextField alloc] init];        _textField.inputView = pickview;        //_textField.inputAccessoryView = self.accessoryView;        [self.view addSubview:_textField];    }    return _textField;}//点击键盘外区域关闭弹出view- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {    if (![self.textField isExclusiveTouch]) {        [self.textField resignFirstResponder];    }}