如何像UIActionSheet一样隐藏和显示(动画)UIView？

Question

我是iOS开发的新手，请注意我的问题。

正如我的标题所说，

我该如何像UIActionSheet那样隐藏和显示带有动画的UIView？
我在Google上搜索过，但是没有找到有效的解决方案。

注意：我发现了下面这行代码，但是对我没有帮助。

- user1525369

Answer 1

尝试以下代码：

请执行以下代码：

- (IBAction)showTapped:(id)sender {
    hideButton.enabled=YES;
    showButton.enabled=NO;
    [UIView animateWithDuration:.5 animations:^{
        subView.frame=CGRectMake(0, 225, subView.frame.size.width, subView.frame.size.height);
    }];
}

- (IBAction)hideTapped:(id)sender {
    hideButton.enabled=NO;
    showButton.enabled=YES;
    [UIView animateWithDuration:.5 animations:^{
        subView.frame=CGRectMake(0, 480, subView.frame.size.width, subView.frame.size.height);
    }];
}

- Sukhpal Singh

---

谢谢你的回答，朋友。它对我很有帮助 :) 简单、简洁而且正确 :) - user1525369

Answer 2

在这种情况下，您可以在窗口上添加一个 UIView，并在需要时显示它。因此，首先您需要做的是创建 AppDelegate 的对象。

AppDelegate *appDelegate = (AppDelegate*)[[UIApplication sharedApplication]delegate];

并且创建您的视图如下：

 CGRect frame = CGRectMake(0, 460, 320, 300);
 UIView *ActionView = [UIView alloc]initWithFrame:frame];

这是显示窗口的视图，注意您的视图y坐标应低于屏幕尺寸，以便您可以将其提升到一定水平，然后再次发送它。

[appDelegate.window addSubview:ActionView];

然后，只需添加这些自定义动画以显示和隐藏您的视图。

显示您的视图：

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationBeginsFromCurrentState:YES];
[UIView setAnimationDuration:0.25];
CGRect rect = [ActionView frame];
rect.origin.y = -300;
[ActionView setFrame:rect];
[UIView commitAnimations];  

隐藏你的视图

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationBeginsFromCurrentState:YES];
[UIView setAnimationDuration:0.25];
CGRect rect = [ScrollView frame];
rect.origin.y = 460;
[ScrollView setFrame:rect];
[UIView commitAnimations];

最后，您可以调整到自己的尺寸和框架。希望这能帮到您...

- IronManGill

---

谢谢你的回答，完全正确。但是Shukhpal的回答可能比你简单 :) 我给你点赞了 +1 - user1525369

顺便提一下，他已经给你直接的代码了... 并没有提到视图被用作操作表。 - IronManGill

从iOS4+开始，苹果强烈推荐使用基于块的动画。 - holex

Answer 3

尝试这个解决方案...它有效

#pragma mark - Date Selector View PresentModelView with Transparent ViewController

- (void) showModal:(UIView*) modalView {

    UIWindow *mainWindow = [(AppDelegate *)[UIApplication sharedApplication].delegate window];

    CGPoint middleCenter;


    middleCenter = CGPointMake(modalView.center.x, modalView.center.y);

    CGSize offSize = [UIScreen mainScreen].bounds.size;

    CGPoint offScreenCenter = CGPointMake(offSize.width / 2.0, offSize.height * 1.5);
    modalView.center = offScreenCenter;

    if ([[mainWindow subviews] containsObject:modalView]) {
        [modalView removeFromSuperview];
    }


    [mainWindow addSubview:modalView];

    [mainWindow bringSubviewToFront:modalView];
    // Show it with a transition effect
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.3];
    // animation duration in seconds
    modalView.center = middleCenter;
    [UIView commitAnimations];

}

// Use this to slide the semi-modal view back down.
- (void) hideModal:(UIView*) modalView {

    CGSize offSize = [UIScreen mainScreen].bounds.size;
    CGPoint offScreenCenter = CGPointMake(offSize.width / 2.0, offSize.height * 1.5);
    [UIView beginAnimations:nil context:(__bridge void *)(modalView)];
    [UIView setAnimationDuration:0.3];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector:@selector(hideModalEnded:finished:context:)];
    modalView.center = offScreenCenter;
    [UIView commitAnimations];

}

- (void) hideModalEnded:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {

    UIView *modalView = (__bridge UIView *)context;
    [modalView removeFromSuperview];
}

- Sourabh Sharma

Answer 4

为实现此目的，请按以下步骤操作：

1）拖动名为pickerView的UIView，添加到您的视图中。

2）拖动UIToolBar（如果需要），添加到您的视图中。

3）拖动UIPickerView，添加到您的视图中。

4）将IBOutlet连接到pickerView。

5）现在在您的代码中实现以下方法。

-(void)viewDidAppear:(BOOL)animated{
    self.pickerView.frame = CGRectMake(0, self.view.frame.size.height+300, self.view.frame.size.width, 300);
}

-(void)hidePickerView{
    self.isPickerHidden = YES;
    [UIView animateWithDuration:0.5 animations:^{
        self.pickerView.frame = CGRectMake(0, self.view.frame.size.height+300, self.view.frame.size.width, 300);
    }];
}

-(void)showPickerView{
    self.isPickerHidden = NO;
    [UIView animateWithDuration:0.5 animations:^{

        self.pickerView.frame = CGRectMake(0, self.view.frame.size.height-300, self.view.frame.size.width, 300);
    }];
}

//Assuming you are tapping on cell, or you can use button connecting to the IBAction as well  
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    if (self.isPickerHidden){
      [self showPickerView];
    }
    else{
        [self hidePickerView];
    }
}

- Hussain Shabbir