Iphone 双视图多个UIPickerViews单出口

我的应用程序有两个视图，这取决于它决定加载哪个视图的方向。但是IB不允许我将两个PickerView连接到同一个插座，有没有办法在代码中分配连接，以便在加载视图时将连接分配到插座

或者我应该为每个视图都做两次吗

还是应该将两个视图拆分为不同的nib文件

请在这方面帮助我

---

谢谢

我最近在我的应用程序中应用了这个概念。在这种情况下，您可以为触摸时显示选择器的每个按钮指定一个int。
假设您有两个按钮btn1和btn2。让他们的触摸动作是btn1Action和btn2Action。您还可以为两个选择器都提供一个工具栏。将选择器和工具栏的可见性设置为隐藏在xib中

-(void)btn1Action:(id)sender
{
picker.setHidden = NO;
toolbar.setHidden = NO;
iPicker = 1;          // Declared globally
}  

-(void)btn2Action:(id)sender
{
picker.setHidden = NO;
toolbar.setHidden = NO;
iPicker = 2;          // Declared globally
}  

-(void)toolbarAction:(id)sender
{
picker.setHidden = YES;
toolbar.setHidden = YES;
}

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{



     if(iPicker==1)
    {
      return 10;
    }
     if(iPicker == 2)
    {
        return 8;
    }


}

- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{

    return 1;
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)iComponent
{

     if(iPicker==1)
    {
   // Your code

   }
    else if(iPicker == 2)
    {
        // Your code
    }


}

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)iComponent
{

    else if(iPicker == 1)
    {
         // Your code

    }
    else if (iPicker == 2)
    {
        // Your code
    }
    } 

---

希望这有帮助。

我最近在我的应用程序中应用了这个概念。在这种情况下，您可以为触摸时显示选择器的每个按钮指定一个int。
假设您有两个按钮btn1和btn2。让他们的触摸动作是btn1Action和btn2Action。您还可以为两个选择器都提供一个工具栏。将选择器和工具栏的可见性设置为隐藏在xib中

-(void)btn1Action:(id)sender
{
picker.setHidden = NO;
toolbar.setHidden = NO;
iPicker = 1;          // Declared globally
}  

-(void)btn2Action:(id)sender
{
picker.setHidden = NO;
toolbar.setHidden = NO;
iPicker = 2;          // Declared globally
}  

-(void)toolbarAction:(id)sender
{
picker.setHidden = YES;
toolbar.setHidden = YES;
}

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{



     if(iPicker==1)
    {
      return 10;
    }
     if(iPicker == 2)
    {
        return 8;
    }


}

- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{

    return 1;
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)iComponent
{

     if(iPicker==1)
    {
   // Your code

   }
    else if(iPicker == 2)
    {
        // Your code
    }


}

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)iComponent
{

    else if(iPicker == 1)
    {
         // Your code

    }
    else if (iPicker == 2)
    {
        // Your code
    }
    } 

---

希望这能有所帮助。

请记住，IBOutlet只是一个属性，它的声明方式使它在IB中可见。因此，第一个问题的答案是肯定的。如有必要，您始终可以在代码中重新指定该属性

我想您已经有了两个用于风景和人像视图的IBO插座——类似于这样：

@property (nonatomic, retain) IBOutlet UIView *landscapeView;
@property (nonatomic, retain) IBOutlet UIView *portraitView;

- (UIPickerView *) pickerView {
    if (self.landscapeView.superview) {
        return self.landscapePickerView;
    }
    else {
        return self.portraitPickerView;
    }
}

@property (nonatomic, retain, readonly) PickerContainer *pickerContainer;

- (PickerContainer *)pickerContainer {
    return (PickerContainer *)self.view;
}

[self.pickerContainer.pickerView reloadAllComponents];

听起来你在

WillAnimateRotationInterfaceOrientation:duration:

中选择了合适的视图

同样，您可以为选择器视图声明两个出口：

@property (nonatomic, retain) IBOutlet UIPickerView *landscapePickerView;
@property (nonatomic, retain) IBOutlet UIPickerView *portraitPickerView;

如果你这样做，我会声明一个动态属性，它总是返回当前方向的选择器视图

@property (nonatomic, retain, readonly) UIPickerView *pickerView;

您可以这样实现它，而不是合成此属性：

@property (nonatomic, retain) IBOutlet UIView *landscapeView;
@property (nonatomic, retain) IBOutlet UIView *portraitView;

- (UIPickerView *) pickerView {
    if (self.landscapeView.superview) {
        return self.landscapePickerView;
    }
    else {
        return self.portraitPickerView;
    }
}

@property (nonatomic, retain, readonly) PickerContainer *pickerContainer;

- (PickerContainer *)pickerContainer {
    return (PickerContainer *)self.view;
}

[self.pickerContainer.pickerView reloadAllComponents];

但是，如果您有一个或两个以上的子视图，那么像这样的并行属性会使控制器变得混乱，这可能是一件痛苦的事情。在这种情况下，我会考虑制作一个UIVIEW的自定义子类，称为类似PickerContainer的子类，它为PACKEVIEW和您需要访问的任何其他子视图都有分支。然后在IB中，您可以将横向视图和纵向视图的类更改为PickerContainer，并且可以将每个picker直接连接到其superview。然后，您可以在控制器中创建一个动态属性，如下所示：

@property (nonatomic, retain) IBOutlet UIView *landscapeView;
@property (nonatomic, retain) IBOutlet UIView *portraitView;

- (UIPickerView *) pickerView {
    if (self.landscapeView.superview) {
        return self.landscapePickerView;
    }
    else {
        return self.portraitPickerView;
    }
}

@property (nonatomic, retain, readonly) PickerContainer *pickerContainer;

- (PickerContainer *)pickerContainer {
    return (PickerContainer *)self.view;
}

[self.pickerContainer.pickerView reloadAllComponents];

之后，您可以通过其容器访问当前方向的pickerView，如下所示：

@property (nonatomic, retain) IBOutlet UIView *landscapeView;
@property (nonatomic, retain) IBOutlet UIView *portraitView;

- (UIPickerView *) pickerView {
    if (self.landscapeView.superview) {
        return self.landscapePickerView;
    }
    else {
        return self.portraitPickerView;
    }
}

@property (nonatomic, retain, readonly) PickerContainer *pickerContainer;

- (PickerContainer *)pickerContainer {
    return (PickerContainer *)self.view;
}

[self.pickerContainer.pickerView reloadAllComponents];

---

编辑：以下是我如何在我的一个项目上实现WillAnimateRotationInterfaceOrientation:duration:：

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation duration:(NSTimeInterval)duration {
    if (UIInterfaceOrientationIsPortrait(interfaceOrientation)) {
        if (self.landscapeView.superview) [self.landscapeView removeFromSuperview];
        self.portraitView.center = CGPointMake(self.view.bounds.size.width / 2,
                                               self.view.bounds.size.height / 2);
        [self.view addSubview:self.portraitView];
    }
    else {
        if (self.portraitView.superview) [self.portraitView removeFromSuperview];
        self.landscapeView.center = CGPointMake(self.view.bounds.size.width / 2,
                                                self.view.bounds.size.height / 2);
        [self.view addSubview:self.landscapeView];
    }
}

---

我的横向视图和纵向视图在IB中没有配置支柱或弹簧，这意味着所有的边距都是灵活的，但宽度和高度都不是。请记住，IBOutlet只是一个属性，它的声明方式使它在IB中可见。因此，您的第一个问题的答案是肯定的。如有必要，您始终可以在代码中重新指定该属性

我想您已经有了两个用于风景和人像视图的IBO插座——类似于这样：

@property (nonatomic, retain) IBOutlet UIView *landscapeView;
@property (nonatomic, retain) IBOutlet UIView *portraitView;

- (UIPickerView *) pickerView {
    if (self.landscapeView.superview) {
        return self.landscapePickerView;
    }
    else {
        return self.portraitPickerView;
    }
}

@property (nonatomic, retain, readonly) PickerContainer *pickerContainer;

- (PickerContainer *)pickerContainer {
    return (PickerContainer *)self.view;
}

[self.pickerContainer.pickerView reloadAllComponents];

听起来你在

WillAnimateRotationInterfaceOrientation:duration:

中选择了合适的视图

同样，您可以为选择器视图声明两个出口：

@property (nonatomic, retain) IBOutlet UIPickerView *landscapePickerView;
@property (nonatomic, retain) IBOutlet UIPickerView *portraitPickerView;

如果你这样做，我会声明一个动态属性，它总是返回当前方向的选择器视图

@property (nonatomic, retain, readonly) UIPickerView *pickerView;

您可以这样实现它，而不是合成此属性：

@property (nonatomic, retain) IBOutlet UIView *landscapeView;
@property (nonatomic, retain) IBOutlet UIView *portraitView;

- (UIPickerView *) pickerView {
    if (self.landscapeView.superview) {
        return self.landscapePickerView;
    }
    else {
        return self.portraitPickerView;
    }
}

@property (nonatomic, retain, readonly) PickerContainer *pickerContainer;

- (PickerContainer *)pickerContainer {
    return (PickerContainer *)self.view;
}

[self.pickerContainer.pickerView reloadAllComponents];

但是，如果您有一个或两个以上的子视图，那么像这样的并行属性会使控制器变得混乱，这可能是一件痛苦的事情。在这种情况下，我会考虑制作一个UIVIEW的自定义子类，称为类似PickerContainer的子类，它为PACKEVIEW和您需要访问的任何其他子视图都有分支。然后在IB中，您可以将横向视图和纵向视图的类更改为PickerContainer，并且可以将每个picker直接连接到其superview。然后，您可以在控制器中创建一个动态属性，如下所示：

@property (nonatomic, retain) IBOutlet UIView *landscapeView;
@property (nonatomic, retain) IBOutlet UIView *portraitView;

- (UIPickerView *) pickerView {
    if (self.landscapeView.superview) {
        return self.landscapePickerView;
    }
    else {
        return self.portraitPickerView;
    }
}

@property (nonatomic, retain, readonly) PickerContainer *pickerContainer;

- (PickerContainer *)pickerContainer {
    return (PickerContainer *)self.view;
}

[self.pickerContainer.pickerView reloadAllComponents];

之后，您可以通过其容器访问当前方向的pickerView，如下所示：

@property (nonatomic, retain) IBOutlet UIView *landscapeView;
@property (nonatomic, retain) IBOutlet UIView *portraitView;

- (UIPickerView *) pickerView {
    if (self.landscapeView.superview) {
        return self.landscapePickerView;
    }
    else {
        return self.portraitPickerView;
    }
}

@property (nonatomic, retain, readonly) PickerContainer *pickerContainer;

- (PickerContainer *)pickerContainer {
    return (PickerContainer *)self.view;
}

[self.pickerContainer.pickerView reloadAllComponents];

---

编辑：以下是我如何在我的一个项目上实现WillAnimateRotationInterfaceOrientation:duration:：

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation duration:(NSTimeInterval)duration {
    if (UIInterfaceOrientationIsPortrait(interfaceOrientation)) {
        if (self.landscapeView.superview) [self.landscapeView removeFromSuperview];
        self.portraitView.center = CGPointMake(self.view.bounds.size.width / 2,
                                               self.view.bounds.size.height / 2);
        [self.view addSubview:self.portraitView];
    }
    else {
        if (self.portraitView.superview) [self.portraitView removeFromSuperview];
        self.landscapeView.center = CGPointMake(self.view.bounds.size.width / 2,
                                                self.view.bounds.size.height / 2);
        [self.view addSubview:self.landscapeView];
    }
}

---

我的横向和纵向视图在IB中没有配置撑杆或弹簧，这意味着所有的边距都是灵活的，但宽度和高度却不灵活。

我按照您的建议做了。但现在，当我想加载此视图时，它会冻结，然后在一段时间后，它会在我的shouldAutorotateToInterfaceOrientation中给我一个异常EXC_BAD_访问权限。我在那里使用的代码是：-（BOOL）shouldAutorotateToInterfaceOrientation:（UIInterfaceOrientation）interfaceOrientation{if（UIInterfaceOrientationIsLandscape（self.interfaceOrientation））{self.view=Landscape；}if（uiInterfaceOrientationSportRait（self.interfaceOrientation））{.view=portraintView；}返回YES；}不要在

shouldAutorotateToInterfaceOrientation:

中交换视图。该方法除了返回YES之外不应执行任何操作。相反，交换

-（void）中的视图将旋转到InterfaceOrientation:（UIInterfaceOrientation）到InterfaceOrientation持续时间：（NSTimeInterval）持续时间

，并根据其

到InterfaceOrientation

参数设置条件。抱歉。。。实际上，我是想告诉您交换

-（void）WillAnimateRotationInterfaceOrientation:（UIInterfaceOrientation）interfaceOrientation duration:（NSTimeInterval）duration中的视图。我搞混了。我将编辑上面的答案。
-（void）将旋转到InterfaceOrientation:（UIInterfaceOrientation）到InterfaceOrientation‌​电离