Ios 添加UIPickerView&；一个按钮在行动表-如何？

我的应用程序要求在操作表中添加以下内容

/// Add the PickerView as a private variable
@interface EMYourClassName ()

@property (nonatomic, strong) UIPickerView *picker;
@property (nonatomic, strong) UIButton *backgroundTapButton;

@end

///
/// This is your action which will present the picker view
///
- (IBAction)showPickerView:(id)sender {

    // Uses the default UIPickerView frame.
    self.picker = [[UIPickerView alloc] initWithFrame:CGRectZero];

    // Place the Pickerview off the bottom of the screen, in the middle set the datasource delegate and indicator
    _picker.center = CGPointMake([[UIScreen mainScreen] bounds].size.width / 2.0, [[UIScreen mainScreen] bounds].size.height + _picker.frame.size.height);
    _picker.dataSource = self;
    _picker.delegate = self;
    _picker.showsSelectionIndicator = YES;

    // Create the toolbar and place it at -44, so it rests "above" the pickerview.
    // Borrowed from @Spark, thanks!
    UIToolbar *pickerDateToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, -44, 320, 44)];
    pickerDateToolbar.barStyle = UIBarStyleBlackTranslucent;
    [pickerDateToolbar sizeToFit];

    NSMutableArray *barItems = [[NSMutableArray alloc] init];

    UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
    [barItems addObject:flexSpace];

    // The action can whatever you want, but it should dimiss the picker.
    UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(backgroundTapped:)];
    [barItems addObject:doneBtn];

    [pickerDateToolbar setItems:barItems animated:YES];
    [_picker addSubview:pickerDateToolbar];

    // If you have a UITabBarController, you should add the picker as a subview of it
    // so it appears to go over the tabbar, not under it. Otherwise you can add it to 
    // self.view
    [self.tabBarController.view addSubview:_picker];

    // Animate it moving up
    [UIView animateWithDuration:.3 animations:^{
        [_picker setCenter:CGPointMake(160, [[UIScreen mainScreen] bounds].size.height - 148)]; //148 seems to put it in place just right.
    } completion:^(BOOL finished) {
        // When done, place an invisible button on the view behind the picker, so if the
        // user "taps to dismiss" the picker, it will go away. Good user experience!
        self.backgroundTapButton = [UIButton buttonWithType:UIButtonTypeCustom];
        _backgroundTapButton.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
        [_backgroundTapButton addTarget:self action:@selector(backgroundTapped:) forControlEvents:UIControlEventTouchUpInside];
        [self.view addSubview:_backgroundTapButton];
    }];

}

// And lastly, the method to hide the picker.  You should handle the picker changing
// in a method with UIControlEventValueChanged on the pickerview.
- (void)backgroundTapped:(id)sender {

    [UIView animateWithDuration:.3 animations:^{
        _picker.center = CGPointMake(160, [[UIScreen mainScreen] bounds].size.height + _picker.frame.size.height);
    } completion:^(BOOL finished) {
        [_picker removeFromSuperview];
        self.picker = nil;
        [self.backgroundTapButton removeFromSuperview];
        self.backgroundTapButton = nil;
    }];
}

• UIToolbar
• UIToolbar上的按钮
• 选择器控制

我已经包括了一个图像，以了解我的要求

---

你能解释一下，这是如何实现的吗？

是的！我终于找到了

在按钮单击事件上实现以下代码，以弹出问题图像中给出的操作表

UIActionSheet *aac = [[UIActionSheet alloc] initWithTitle:@"How many?"
                                             delegate:self
                                    cancelButtonTitle:nil
                               destructiveButtonTitle:nil
                                    otherButtonTitles:nil];

UIDatePicker *theDatePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0.0, 44.0, 0.0, 0.0)];
if(IsDateSelected==YES)
{
    theDatePicker.datePickerMode = UIDatePickerModeDate;
    theDatePicker.maximumDate=[NSDate date];
}else {
    theDatePicker.datePickerMode = UIDatePickerModeTime;
}

self.dtpicker = theDatePicker;
[theDatePicker release];
[dtpicker addTarget:self action:@selector(dateChanged) forControlEvents:UIControlEventValueChanged];

pickerDateToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
pickerDateToolbar.barStyle = UIBarStyleBlackOpaque;
[pickerDateToolbar sizeToFit];

NSMutableArray *barItems = [[NSMutableArray alloc] init];

UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
[barItems addObject:flexSpace];

UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(DatePickerDoneClick)];
[barItems addObject:doneBtn];

[pickerDateToolbar setItems:barItems animated:YES];

[aac addSubview:pickerDateToolbar];
[aac addSubview:dtpicker];
[aac showInView:self.view];
[aac setBounds:CGRectMake(0,0,320, 464)];

还有一个解决方案：

• 没有工具栏，而是分段控件（eyecandy）

---

Marcio对这个问题的出色解决方案对我在UIActionSheet中添加任何类型的子视图都有很大帮助
由于我还不完全清楚的原因，UIActionSheet的边界只能在显示后设置；sagar和marcio的解决方案都成功地解决了这一问题，并在显示后向actionsheet发送了一条setBounds:CGRectMake（…）消息
但是，在显示工作表后设置UIActionSheet边界会在操作表出现时创建一个跳跃的过渡，此时它会“弹出”到视图中，然后仅在最后40个像素左右的范围内滚动
在添加子视图后调整UIPickerView的大小时，我建议将发送到actionSheet的setBounds消息包装在动画块中。这将使操作表的入口看起来更平滑

UIActionSheet *actionSheet = [[[UIActionSheet alloc] initWithTitle:nil delegate:nil cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];


// add one or more subviews to the UIActionSheet
// this could be a UIPickerView, or UISegmentedControl buttons, or any other 
// UIView.  Here, let's just assume it's already set up and is called 
// (UIView *)mySubView
[actionSheet addSubview:myView];

// show the actionSheet
[actionSheet showInView:[UIApplication mainWindow]];


// Size the actionSheet with smooth animation
    [UIView beginAnimations:nil context:nil];
    [actionSheet setBounds:CGRectMake(0, 0, 320, 485)];
    [UIView commitAnimations]; 

---

对于那些想找到DatePickerDoneClick函数的人。。。下面是取消操作表的简单代码。显然，aac应该是一个ivar（implementation.h文件中的那个）

---

尽管这个问题已经很老了，但我会很快提到，我已经使用一个方便的函数创建了一个ActionSheet，这样您就可以在一行中生成一个带有UIPickerView的ActionSheet。它基于对这个问题的回答中的代码

UIActionSheet *aac = [[UIActionSheet alloc] initWithTitle:@"How many?"
                                             delegate:self
                                    cancelButtonTitle:nil
                               destructiveButtonTitle:nil
                                    otherButtonTitles:nil];

UIDatePicker *theDatePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0.0, 44.0, 0.0, 0.0)];
if(IsDateSelected==YES)
{
    theDatePicker.datePickerMode = UIDatePickerModeDate;
    theDatePicker.maximumDate=[NSDate date];
}else {
    theDatePicker.datePickerMode = UIDatePickerModeTime;
}

self.dtpicker = theDatePicker;
[theDatePicker release];
[dtpicker addTarget:self action:@selector(dateChanged) forControlEvents:UIControlEventValueChanged];

pickerDateToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
pickerDateToolbar.barStyle = UIBarStyleBlackOpaque;
[pickerDateToolbar sizeToFit];

NSMutableArray *barItems = [[NSMutableArray alloc] init];

UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
[barItems addObject:flexSpace];

UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(DatePickerDoneClick)];
[barItems addObject:doneBtn];

[pickerDateToolbar setItems:barItems animated:YES];

[aac addSubview:pickerDateToolbar];
[aac addSubview:dtpicker];
[aac showInView:self.view];
[aac setBounds:CGRectMake(0,0,320, 464)];

编辑：它现在还支持使用日期选择器和距离选择器

---

UPD： 此版本已弃用：请改用。

---

要添加到marcio令人敬畏的解决方案中，

dismissActionSheet:

可以按如下方式实现
• 将ActionSheet对象添加到.h文件中，合成它并在.m文件中引用它
• 将此方法添加到代码中

  - (void)dismissActionSheet:(id)sender{
    [_actionSheet dismissWithClickedButtonIndex:0 animated:YES];
    [_myButton setTitle:@"new title"]; //set to selected text if wanted
  }
  

---

我认为这是最好的办法

---

这几乎是每个人的建议，但使用块，这是一个很好的触摸
我真的不明白为什么

UIPickerView

会进入

UIActionSheet

中。这似乎是一个杂乱的解决方案，在未来的iOS版本中可能会被打破。（我以前在一个应用程序中遇到过类似这样的情况，

UIPickerView

在第一次点击时没有显示，必须重新标记，

UIActionSheet

有一些奇怪的地方）
我所做的只是实现了一个

UIPickerView

，然后将其作为子视图添加到我的视图中，并将其设置为向上移动的动画，就好像它被显示为一个动作表一样

/// Add the PickerView as a private variable
@interface EMYourClassName ()

@property (nonatomic, strong) UIPickerView *picker;
@property (nonatomic, strong) UIButton *backgroundTapButton;

@end

///
/// This is your action which will present the picker view
///
- (IBAction)showPickerView:(id)sender {

    // Uses the default UIPickerView frame.
    self.picker = [[UIPickerView alloc] initWithFrame:CGRectZero];

    // Place the Pickerview off the bottom of the screen, in the middle set the datasource delegate and indicator
    _picker.center = CGPointMake([[UIScreen mainScreen] bounds].size.width / 2.0, [[UIScreen mainScreen] bounds].size.height + _picker.frame.size.height);
    _picker.dataSource = self;
    _picker.delegate = self;
    _picker.showsSelectionIndicator = YES;

    // Create the toolbar and place it at -44, so it rests "above" the pickerview.
    // Borrowed from @Spark, thanks!
    UIToolbar *pickerDateToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, -44, 320, 44)];
    pickerDateToolbar.barStyle = UIBarStyleBlackTranslucent;
    [pickerDateToolbar sizeToFit];

    NSMutableArray *barItems = [[NSMutableArray alloc] init];

    UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
    [barItems addObject:flexSpace];

    // The action can whatever you want, but it should dimiss the picker.
    UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(backgroundTapped:)];
    [barItems addObject:doneBtn];

    [pickerDateToolbar setItems:barItems animated:YES];
    [_picker addSubview:pickerDateToolbar];

    // If you have a UITabBarController, you should add the picker as a subview of it
    // so it appears to go over the tabbar, not under it. Otherwise you can add it to 
    // self.view
    [self.tabBarController.view addSubview:_picker];

    // Animate it moving up
    [UIView animateWithDuration:.3 animations:^{
        [_picker setCenter:CGPointMake(160, [[UIScreen mainScreen] bounds].size.height - 148)]; //148 seems to put it in place just right.
    } completion:^(BOOL finished) {
        // When done, place an invisible button on the view behind the picker, so if the
        // user "taps to dismiss" the picker, it will go away. Good user experience!
        self.backgroundTapButton = [UIButton buttonWithType:UIButtonTypeCustom];
        _backgroundTapButton.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
        [_backgroundTapButton addTarget:self action:@selector(backgroundTapped:) forControlEvents:UIControlEventTouchUpInside];
        [self.view addSubview:_backgroundTapButton];
    }];

}

// And lastly, the method to hide the picker.  You should handle the picker changing
// in a method with UIControlEventValueChanged on the pickerview.
- (void)backgroundTapped:(id)sender {

    [UIView animateWithDuration:.3 animations:^{
        _picker.center = CGPointMake(160, [[UIScreen mainScreen] bounds].size.height + _picker.frame.size.height);
    } completion:^(BOOL finished) {
        [_picker removeFromSuperview];
        self.picker = nil;
        [self.backgroundTapButton removeFromSuperview];
        self.backgroundTapButton = nil;
    }];
}

---

iOS 7的更新
：

UIActionSheet不是为子类化而设计的，也不应该将视图添加到其层次结构中

我建议不要尝试自定义操作表的内容，因为它可能会在iOS 7中导致严重的无效上下文错误。我只是花了几个小时来解决这个问题，最终决定采取不同的方法。我将显示操作表的调用替换为包含简单tableview的模态视图控制器
有很多方法可以实现这一点。这是我刚刚在当前项目中实现的一种方法。这很好，因为我可以在5到6个不同的屏幕之间重复使用它，我可以让所有用户从选项列表中进行选择
• 创建一个新的UITableViewController子类，

  SimpleTableViewController

• 在故事板中创建UITableViewController（嵌入在导航控制器中），并将其自定义类设置为SimpleTableViewController
• 为SimpleTableViewController的导航控制器提供脚本ID“SimpleTableVC”
• 在SimpleTableViewController.h中，创建一个NSArray属性，该属性将表示表中的数据
• 同样在SimpleTableViewController.h中，创建一个协议

  SimpleTableViewControllerDelegate

  ，使用所需的方法

  itemSelectedatRow:

  ，以及一个名为delegate的弱属性，类型为

  id

  。这就是我们将选择传递回父控制器的方式
• 在SimpleTableViewController.m中，实现tableview数据源和委托方法，在

  tableview:didSelectRowAtIndexPath:

  中调用

  itemSelectedatRow:

这种方法还有一个额外的好处，就是可以很好地重用。要使用，请在ViewController.h中导入SimpleTableViewController类，遵循SimpleTableViewDelegate，并实现

itemSelectedAtRow:

方法。然后，要打开该模式，只需实例化一个新的SimpleTableViewController，设置表数据和委托，并呈现它

UINavigationController *navigationController = (UINavigationController *)[self.storyboard instantiateViewControllerWithIdentifier:@"SimpleTableVC"];
SimpleTableViewController *tableViewController = (SimpleTableViewController *)[[navigationController viewControllers] objectAtIndex:0];
tableViewController.tableData = self.statesArray;
tableViewController.navigationItem.title = @"States";
tableViewController.delegate = self;
[self presentViewController:navigationController animated:YES completion:nil];

我创建了一个简单的示例并进行了验证

---

另请参见。
我喜欢Wayfarer和flexaddicted采用的方法，但发现（像aZtral）它不起作用，因为backgroundTapButton是唯一响应用户交互的元素。这让我把他的三个子视图：_picker、_pickerToolbar和backgroundTapButton放在一个包含视图（弹出窗口）的内部，然后在屏幕上和屏幕外设置动画。我还需要一个_pickerToolbar上的取消按钮。以下是弹出视图的相关代码元素（您需要提供自己的选择器数据源和委托方法）

---

由于iOS 8无法运行，它无法运行，因为苹果改变了

UIActionSheet

的内部实现。请参阅：
子类化注释
UIActionSheet未设计为子类，或 是否应将视图添加到其h

#define DURATION            0.4
#define PICKERHEIGHT        162.0
#define TOOLBARHEIGHT       44.0

@interface ViewController ()
@property (nonatomic, strong) UIView        *popup;
@property (nonatomic, strong) UIPickerView  *picker;
@property (nonatomic, strong) UIToolbar     *pickerToolbar;
@property (nonatomic, strong) UIButton      *backgroundTapButton;
@end

-(void)viewDidLoad {
    // These are ivars for convenience
    rect = self.view.bounds;
    topNavHeight = self.navigationController.navigationBar.frame.size.height;
    bottomNavHeight = self.navigationController.toolbar.frame.size.height;
    navHeights = topNavHeight + bottomNavHeight;
}

-(void)showPickerView:(id)sender {
    [self createPicker];
    [self createToolbar];

    // create view container
    _popup = [[UIView alloc] initWithFrame:CGRectMake(0.0, topNavHeight, rect.size.width, rect.size.height - navHeights)];
    // Initially put the centre off the bottom of the screen
    _popup.center = CGPointMake(rect.size.width / 2.0, rect.size.height + _popup.frame.size.height / 2.0);
    [_popup addSubview:_picker];
    [_popup insertSubview:_pickerToolbar aboveSubview:_picker];

    // Animate it moving up
    // This seems to work though I am not sure why I need to take off the topNavHeight
    CGFloat vertCentre = (_popup.frame.size.height - topNavHeight) / 2.0;

    [UIView animateWithDuration:DURATION animations:^{
        // move it to a new point in the middle of the screen
        [_popup setCenter:CGPointMake(rect.size.width / 2.0, vertCentre)];
    } completion:^(BOOL finished) {
        // When done, place an invisible 'button' on the view behind the picker,
        // so if the user "taps to dismiss" the picker, it will go away
        self.backgroundTapButton = [UIButton buttonWithType:UIButtonTypeCustom];
        _backgroundTapButton.frame = CGRectMake(0, 0, _popup.frame.size.width, _popup.frame.size.height);
        [_backgroundTapButton addTarget:self action:@selector(doneAction:) forControlEvents:UIControlEventTouchUpInside];
        [_popup insertSubview:_backgroundTapButton belowSubview:_picker];
        [self.view addSubview:_popup];
    }];
}

-(void)createPicker {
    // To use the default UIPickerView frame of 216px set frame to CGRectZero, but we want the 162px height one
    CGFloat     pickerStartY = rect.size.height - navHeights - PICKERHEIGHT;
    self.picker = [[UIPickerView alloc] initWithFrame:CGRectMake(0.0, pickerStartY, rect.size.width, PICKERHEIGHT)];
    _picker.dataSource = self;
    _picker.delegate = self;
    _picker.showsSelectionIndicator = YES;
    // Otherwise you can see the view underneath the picker
    _picker.backgroundColor = [UIColor whiteColor];
    _picker.alpha = 1.0f;
}

-(void)createToolbar {
    CGFloat     toolbarStartY = rect.size.height - navHeights - PICKERHEIGHT - TOOLBARHEIGHT;
    _pickerToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, toolbarStartY, rect.size.width, TOOLBARHEIGHT)];
    [_pickerToolbar sizeToFit];

    NSMutableArray *barItems = [[NSMutableArray alloc] init];
    UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancelAction:)];
    [barItems addObject:cancelButton];

    // Flexible space to make the done button go on the right
    UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
    [barItems addObject:flexSpace];

    // The done button
    UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(doneAction:)];
    [barItems addObject:doneButton];
    [_pickerToolbar setItems:barItems animated:YES];
}

// The method to process the picker, if we have hit done button
- (void)doneAction:(id)sender {
    [UIView animateWithDuration:DURATION animations:^{
        _popup.center = CGPointMake(rect.size.width / 2.0, rect.size.height + _popup.frame.size.height / 2.0);
    } completion:^(BOOL finished) { [self destroyPopup]; }];
    // Do something to process the returned value from your picker
}

// The method to process the picker, if we have hit cancel button
- (void)cancelAction:(id)sender {
    [UIView animateWithDuration:DURATION animations:^{
        _popup.center = CGPointMake(rect.size.width / 2.0, rect.size.height + _popup.frame.size.height / 2.0);
    } completion:^(BOOL finished) { [self destroyPopup]; }];
}

-(void)destroyPopup {
    [_picker removeFromSuperview];
    self.picker = nil;
    [_pickerToolbar removeFromSuperview];
    self.pickerToolbar = nil;
    [self.backgroundTapButton removeFromSuperview];
    self.backgroundTapButton = nil;
    [_popup removeFromSuperview];
    self.popup = nil;
}