当选择器视图出现时如何与键盘出现类似地滚动屏幕？

发布于 2024-12-12 08:34:08 字数 173 浏览 1 评论 0原文

我有一个如图所示的屏幕。现在我希望当用户单击提交的文本时会出现一个选择器视图。所以我希望当选择器视图出现时，视图将在键盘出现时类似地自动滚动。 screen

当选择器视图出现时怎么办？

提前致谢...

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奢望 2024-12-19 08:34:08

你应该在 gitHub 上看看这个伟大的项目：

https://github.com/reednj/TDSemiModal

它提供了一个类，使选择器看起来像键盘，并将连接的字段移动到视图中。

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美人迟暮 2024-12-19 08:34:08

我假设您希望您的应用程序是纵向的，因为如果它是横向的，您可以进行更改。将 UIPickerView 添加到您的笔尖并将其连接到 IBOutlet。然后，使用 IBAction 方法创建一个按钮，为 UIPickerView 提供动画效果。尝试在 .h 文件中：

@interface MyViewController: UIViewController {
  BOOL                    _pickerIsVisible;
  IBOutlet UIPickerView * _picker;
}

- (IBAction)buttonMethod:(UIButton *)aButton;

和在 .m 文件中：

- (void)viewDidLoad; {
  [super viewDidLoad];
  _pickerIsVisible = NO;
}

- (IBAction)buttonMethod:(UIButton *)aButton; {
  if(_pickerIsVisible){
    _pickerIsVisible = NO;
    [UIView animateWithDuration:2.0f
            animations:^{ 
                CGPoint point = _picker.frame.origin;
                point.y += 216; // The height of the picker.
                _picker.frame.origin = point;
            } 
            completion:^(BOOL finished){
              // Do something here if you want.
            }];
  }
  else{
    _pickerIsVisible = YES;
    [UIView animateWithDuration:2.0f
            animations:^{ 
                CGPoint point = _picker.frame.origin;
                point.y -= 216; // The height of the picker.
                _picker.frame.origin = point;
            } 
            completion:^(BOOL finished){
              // Do something here if you want.
            }];
  }
}

确保将笔尖中的 UIPickerView 设置为 480 坐标，因此它位于视图下方。

编辑：如果您希望将 UIPickerView 连接起来并充当 UITextField 或 的键盘>UITextView，您始终可以将其连接到 UITextField 的 .inputView 属性，这样也可以工作。

希望有帮助！

I will assume that you want your app to be in portrait, as you can make the changes if it is landscape. Add a UIPickerView to your nib and hook it up to an IBOutlet. Then, make a button with an IBAction method that animates the UIPickerView. Try in the .h file:

@interface MyViewController: UIViewController {
  BOOL                    _pickerIsVisible;
  IBOutlet UIPickerView * _picker;
}

- (IBAction)buttonMethod:(UIButton *)aButton;

and in your .m file:

- (void)viewDidLoad; {
  [super viewDidLoad];
  _pickerIsVisible = NO;
}

- (IBAction)buttonMethod:(UIButton *)aButton; {
  if(_pickerIsVisible){
    _pickerIsVisible = NO;
    [UIView animateWithDuration:2.0f
            animations:^{ 
                CGPoint point = _picker.frame.origin;
                point.y += 216; // The height of the picker.
                _picker.frame.origin = point;
            } 
            completion:^(BOOL finished){
              // Do something here if you want.
            }];
  }
  else{
    _pickerIsVisible = YES;
    [UIView animateWithDuration:2.0f
            animations:^{ 
                CGPoint point = _picker.frame.origin;
                point.y -= 216; // The height of the picker.
                _picker.frame.origin = point;
            } 
            completion:^(BOOL finished){
              // Do something here if you want.
            }];
  }
}

Make sure you set your UIPickerView in the nib to have a y coordinate of 480, so it is below the view.

Edit: If you want the UIPickerView to be hooked up and act like the keyboard of a UITextField or UITextView, you could always hook it up to the .inputView property of the UITextField, and that would work as well.

Hope that Helps!

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