ios - 如何在单击按钮时隐藏/显示日期选择器？

Question

我有一个 UIDatePicker，我想在 UIButton Click 上隐藏和显示。

为此，我使用了 BOOL 变量 isTouchFirst。但它会在按钮的第二个事件上隐藏和显示。

请解决此问题。并首先检查它是否适用于双击事件。

if(isTouchFirst){   
        isTouchFirst=NO;
        self. DatePicker.hidden=NO; 
        NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
        [dateFormatter setDateFormat:@"yyyy-MM-dd"];
        _DatePicker.datePickerMode = UIDatePickerModeDate;
        formatedDate=[[NSString alloc]init];
        formatedDate = [dateFormatter stringFromDate:self.DatePicker.date];
        self.SelectedDate.text =formatedDate;
        [DatePicker setMinimumDate: [NSDate date]];
        _goDateForcustmoeDetail=formatedDate;
    }
 else {  
       isTouchFirst=YES;
       self. DatePicker.hidden=YES;
      }

Answer 1

BOOL datePickerHidden;

- (void)viewDidLoad
{
    [super viewDidLoad];
    datePickerHidden = YES;

    // _datePicker = [UIDatePicker alloc...
    [_datePicker setHidden: datePickerHidden];

    // UIButton *dateHiddenSwitchBtn = [UIButton alloc...
    dateHiddenSwitchBtn addTarget:self action:@selector(switchDatePickerHidden) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:dateHiddenSwitchBtn];
}

- (void)switchDatePickerHidden
{
    if (datePickerHidden) datePickerHidden = NO;
    else datePickerHidden = YES;

    [_datePicker setHidden: datePickerHidden];
}