Ios 当用户按下按钮时弹出日期选择器

我是一个ios初学者，请帮助我如何在用户按下按钮时显示弹出式日历。我的按钮已经在下面了

UIButton *button=[UIButton buttonWithType:UIButtonTypeRoundedRect];
button.frame= CGRectMake(60, 560, 150, 30);
[button setTitle:@"Select Date" forState:UIControlStateNormal];
[button addTarget:self action:@selector(buttonAction) forControlEvents:UIControlEventTouchUpInside];

---

在.h文件中

 UIDatePicker *datepicker;
 UIPopoverController *popOverForDatePicker;

- (void)viewDidLoad
{
    [super viewDidLoad];

    UIButton *button=[UIButton buttonWithType:UIButtonTypeRoundedRect];
    button.frame= CGRectMake(60, 560, 150, 30);
    [button setTitle:@"Select Date" forState:UIControlStateNormal];
    [button setBackgroundColor:[UIColor redColor]];
    [button addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button];
}
- (void)buttonAction:(UIButton *)sender
{
    UIViewController *viewController = [[UIViewController alloc]init];
    UIView *viewForDatePicker = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 200, 100)];

    datepicker = [[UIDatePicker alloc]initWithFrame:CGRectMake(0, 0, 200, 100)];
    datepicker.datePickerMode = UIDatePickerModeDate;
    datepicker.hidden = NO;
    datepicker.date = [NSDate date];
    [datepicker addTarget:self action:@selector(LabelChange:) forControlEvents:UIControlEventValueChanged];

    [viewForDatePicker addSubview:datepicker];
    [viewController.view addSubview:viewForDatePicker];

    popOverForDatePicker = [[UIPopoverController alloc]initWithContentViewController:viewController];
    popOverForDatePicker.delegate = self;
    [popOverForDatePicker setPopoverContentSize:CGSizeMake(200, 100) animated:NO];
    [popOverForDatePicker presentPopoverFromRect:sender.frame inView:self.view  permittedArrowDirections:(UIPopoverArrowDirectionUp|UIPopoverArrowDirectionDown| UIPopoverArrowDirectionLeft|UIPopoverArrowDirectionRight) animated:YES];
}
-(void)LabelChange:(id)sender
{
    NSDateFormatter *df = [[NSDateFormatter alloc]init];
    df.dateStyle = NSDateFormatterMediumStyle;
    NSLog(@"%@",[NSString stringWithFormat:@"%@",[df stringFromDate:datepicker.date]]);
}

请在.h文件中设置代理

UIPopoverControllerDelegate

在.m文件中

 UIDatePicker *datepicker;
 UIPopoverController *popOverForDatePicker;

- (void)viewDidLoad
{
    [super viewDidLoad];

    UIButton *button=[UIButton buttonWithType:UIButtonTypeRoundedRect];
    button.frame= CGRectMake(60, 560, 150, 30);
    [button setTitle:@"Select Date" forState:UIControlStateNormal];
    [button setBackgroundColor:[UIColor redColor]];
    [button addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button];
}
- (void)buttonAction:(UIButton *)sender
{
    UIViewController *viewController = [[UIViewController alloc]init];
    UIView *viewForDatePicker = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 200, 100)];

    datepicker = [[UIDatePicker alloc]initWithFrame:CGRectMake(0, 0, 200, 100)];
    datepicker.datePickerMode = UIDatePickerModeDate;
    datepicker.hidden = NO;
    datepicker.date = [NSDate date];
    [datepicker addTarget:self action:@selector(LabelChange:) forControlEvents:UIControlEventValueChanged];

    [viewForDatePicker addSubview:datepicker];
    [viewController.view addSubview:viewForDatePicker];

    popOverForDatePicker = [[UIPopoverController alloc]initWithContentViewController:viewController];
    popOverForDatePicker.delegate = self;
    [popOverForDatePicker setPopoverContentSize:CGSizeMake(200, 100) animated:NO];
    [popOverForDatePicker presentPopoverFromRect:sender.frame inView:self.view  permittedArrowDirections:(UIPopoverArrowDirectionUp|UIPopoverArrowDirectionDown| UIPopoverArrowDirectionLeft|UIPopoverArrowDirectionRight) animated:YES];
}
-(void)LabelChange:(id)sender
{
    NSDateFormatter *df = [[NSDateFormatter alloc]init];
    df.dateStyle = NSDateFormatterMediumStyle;
    NSLog(@"%@",[NSString stringWithFormat:@"%@",[df stringFromDate:datepicker.date]]);
}

---

你可以试一试。对于iphone或ipad，只要看看我的答案就知道了。很好@manohar.如果可以的话，再问一个问题.，，如果我希望这个弹出窗口是模态的，我需要设置什么属性，这样按钮后面就不能点击了？？？…只要粘贴这个，让我知道它是有效的…如果可以的话，再问一个问题.，，如果我希望这个弹出窗口是模态的，我需要设置什么属性，，所以后面的按钮是不可点击的？？？。@Manohara无法找到你。。再来。。。模式意味着？？因此，当日期选择器弹出时，后面uiview中的按钮将不可单击…如果（popOverForDatePicker.popoovervisible）{NSLog（@“可见”）；}否则{NSLog（@“不可见”）；}