iPhone 方向改变时改变 UIViews 的位置

Change UIViews position when iPhone orientation changes

我试图在 iPhone 的方向改变时改变 UIViews 的位置。它类似于 this question;但不是 3 views,而是 2 views。当 iPhone 处于纵向模式时,我希望 views 一个在另一个之上。在横向模式下,它们应该并排。

所以我尝试了以下方法:

willAnimateRotationToInterfaceOrientation:duration:

但该方法已被弃用。我该怎么做才能检查 iPhone 的方向何时发生变化?

更新

我尝试了以下方法:感谢@Sean 的指导!!

- (void)viewDidLayoutSubviews
{
    [super viewDidLayoutSubviews];
    self.tableView.frame = CGRectMake(0, 0, 100, 200); // This Works
}

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator
{
    [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];

    CGFloat viewWidth = self.view.frame.size.width;
    CGFloat viewHeight = self.view.frame.size.height;


    if (size.width >= size.height)
    {
        self.containerView.frame = CGRectMake(0, 0, viewWidth, 272);
        self.tableView.frame = CGRectMake(self.containerView.frame.size.height, 0, viewWidth, viewHeight - self.containerView.frame.size.height);
        NSLog(@"Portrait Mode");  // Get the NSLog, but frames don't change
    }
    else
    {
        self.containerView.frame = CGRectMake(0, 0, viewWidth / 2, viewHeight);
        self.tableView.frame = CGRectMake(viewWidth / 2, 0, viewHeight / 2, viewHeight);
        NSLog(@"Landscape Mode");  // Get the NSLog, but frames don't change
    }
}

因此,当我更改 viewDidLayoutSubviews 中的帧时,它起作用了。但是当我尝试在 viewWillTransition... 中更改它们时,它并没有改变,但我得到了 NSLogs.

您可以使用以下代码检查设备方向:

UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;

 if(orientation == 0) //Default orientation 
//UI is in Default (Portrait) -- this is really a just a failsafe. 

 else if(orientation == UIInterfaceOrientationPortrait)
//Do something if the orientation is in Portrait

 else if(orientation == UIInterfaceOrientationLandscapeLeft)
// Do something if Left

 else if(orientation == UIInterfaceOrientationLandscapeRight)
//Do something if right

您可以根据需要创建两个独立的视图,并根据设备方向呈现它们。

苹果推荐使用以下方法:

- (void)viewWillTransitionToSize:(CGSize)size
   withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator

示例:

- (void)viewWillTransitionToSize:(CGSize)size
   withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator
{
    [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];

    if (size.width >= size.height) {
        // Landscape frames
        self.subviewA.frame = CGRectMake(x, y, width, height);
        self.subviewB.frame = CGRectMake(x, y, width, height);
    } else {
        // Portrait frames
        self.subviewA.frame = CGRectMake(x, y, width, height);
        self.subviewB.frame = CGRectMake(x, y, width, height);
    }
}

确保在实施此解决方案时调用如上所示的超级 class 方法。