视图控制器的过渡 - 从左到右

Question

我没有使用导航控制器，而是使用故事板。

我必须从 1 个视图控制器过渡到另一个，为此我正在使用 segue。

现在我将 segue 样式设置为 Custom，并在相应的类中覆盖 perform 方法。

-(void)perform
{
    UIViewController *sourceViewController = [self sourceViewController];
    UIViewController *destinationViewController = [self destinationViewController];

    CATransition *transition = [CATransition animation];
    transition.duration = 0.25;
    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
    transition.type = kCATransitionPush;
    transition.subtype = kCATransitionFromLeft;

    [sourceViewController.view.layer addAnimation:transition forKey:kCATransition];animated:NO];
    [sourceViewController presentViewController:destinationViewController animated:YES completion:nil];
}

但是还有一个目标视图控制器的属性modalTransitionStyle。

所以现在，源 VC 从左到右就像被推送一样，但我想表明它是由目标视图控制器推送的。相反，目标 VC 默认执行“Cover Vertical”，modalTransitionStyle 属性只有四个选项可用，其中没有一个对我有用。

我认为要让它工作，这个动画应该被添加到一些超级视图层，一个超级视图，两个视图控制器都从中呈现。但是没有这样的superview..

Answer 1

我的应用程序中的所有 ViewControllers 都继承自 MyViewController，除了一些其他默认行为之外，它还具有以下属性：

@property(readwrite, nonatomic) BOOL slideFromSide;

还有这段代码：

- (void) presentViewController: (UIViewController*) vc animated: (BOOL) flag completion: (void (^)(void)) completion
{
    BOOL slideIn = NO;
    if ([vc isKindOfClass: [MyViewController class]])
    {
        MyViewController *svc = (MyViewController*) vc;
        slideIn = svc.slideFromSide;
    }

    if (slideIn)
    {
        [self addChildViewController: vc];
        [self.view addSubview: vc.view];

        CGRect frame = vc.view.frame;
        frame.origin.x = frame.size.width;
        vc.view.frame = frame;

        frame.origin.x = 0;
        [UIView animateWithDuration: 0.33
                         animations: ^{
                             vc.view.frame = frame;
                         }
         ];
    }
    else
    {
        [super presentViewController: vc animated: flag completion: completion];
    }
}


- (IBAction) backAction: (id) sender
{
    if (_slideFromSide)
    {
        CGRect frame = self.view.frame;
        frame.origin.x = frame.size.width;
        [UIView animateWithDuration: 0.33
                         animations: ^{
                             self.view.frame = frame;
                         }
                         completion:^(BOOL finished) {
                             [self removeFromParentViewController];
                         }
         ];
    }
    else
    {
        [self dismissViewControllerAnimated: YES completion: nil];
    }
}

然后，在我想要滑入的 ViewControllers 中，我有：

- (id) initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName: nibNameOrNil bundle: nibBundleOrNil];
    if (self)
    {
        self.slideFromSide = YES;
        // Whatever else you want to do
    }

    return self;
}

调用一个新的 ViewController 就像平常一样：

WhateverViewController *vc = [WhateverViewController alloc] initWithNibName: nil bundle: nil];
[self presentViewController: vc animated: YES completion: nil];

Answer 2

通常你会给destinationController一个storyboardId，然后从sourceViewController这样调用它：

//push next view
UIStoryboard *storyboard = self.storyboard;
YourViewControllerClass *destVC = [storyboard instantiateViewControllerWithIdentifier:@"StoryboardID"];
[self.navigationController pushViewController:destVC animated:YES];

您也可以像这样手动操作：

    // Get the views.
    UIView * fromView = sourceViewController.view;
    UIView * toView = destinationViewController.view;

    // Get the size of the view area.
    CGRect viewSize = fromView.frame;

    // Add the toView to the fromView
    [fromView.superview addSubview:toView];

    // Position it off screen.
    toView.frame = CGRectMake( 320 , viewSize.origin.y, 320, viewSize.size.height);

    [UIView animateWithDuration:0.4 animations:
     ^{
         // Animate the views on and off the screen. This will appear to slide.
         fromView.frame =CGRectMake( -320 , viewSize.origin.y, 320, viewSize.size.height);
         toView.frame =CGRectMake(0, viewSize.origin.y, 320, viewSize.size.height);
     }
                     completion:^(BOOL finished)
     {
         if (finished)
         {
             // Remove the old view from its parent.
             [fromView removeFromSuperview];

             //I use it to have navigationnBar and TabBar at the same time
             //self.tabBarController.selectedIndex = indexPath.row+1;
         }
     }];

** 编辑 **

反函数（类似于导航控制器中的后退按钮）：

// Get the views.
UIView * fromView = fromViewController.view;
UIView * toView = destViewController.view;

// Get the size of the view area.
CGRect viewSize = fromView.frame;

// Add the to view to the tab bar view.
[fromView.superview addSubview:toView];

// Position it off screen.
toView.frame = CGRectMake( -320 , viewSize.origin.y, 320, viewSize.size.height);

[UIView animateWithDuration:0.4 animations:
 ^{
     // Animate the views on and off the screen. This will appear to slide.
     fromView.frame =CGRectMake( 320 , viewSize.origin.y, 320, viewSize.size.height);
     toView.frame =CGRectMake(0, viewSize.origin.y, 320, viewSize.size.height);
 }
                 completion:^(BOOL finished)
 {
     if (finished)
     {
         // Remove the old view from the tabbar view.
         [fromView removeFromSuperview];
     }
 }];