如何将视图从纵向旋转到横向模式

时间:2013-12-16 08:08:09

标签: ios iphone objective-c view orientation

我的应用中的方向有问题。假设我有两个视图(使用专用视图控制器):

  • 第一个应以纵向显示(正确显示)
  • 第二应以横向显示(无法正确显示)

它被缩小并以肖像显示(如下面的第二张图片)。 当我将设备水平旋转并回到纵向时,一切正常。但在推动视图后它显示不正确(下图)。我该如何解决这个问题?

enter image description here

我使用CustomNavigationController来继承UINavigatorControler并实现三种方法:

- (NSUInteger)supportedInterfaceOrientations
{
    return [self.topViewController supportedInterfaceOrientations];
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return [self.topViewController preferredInterfaceOrientationForPresentation];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)orientation
{
    return [self.topViewController shouldAutorotateToInterfaceOrientation:orientation];
}

在应用程序委托中,我以这种方式初始化控制器:

self.navigationController = [[CustomNavigationController alloc] initWithRootViewController:self.viewController];
[self.window setRootViewController:self.navigationController];

第一个视图控制器以这种方式实现方向功能:

- (NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationPortrait;
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)orientation
{
    if (orientation == UIInterfaceOrientationPortrait)
        return YES;

    return NO;
}

第二个视图控制器以这种方式实现方向功能:

- (NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskLandscapeRight;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationLandscapeRight;
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)orientation
{
    if (orientation == UIInterfaceOrientationLandscapeRight)
        return YES;

    return NO;
}

3 个答案:

答案 0 :(得分:1)

嗨声明一个全局变量BOOL isLandScape;

initialize it as isLandScape=NO;


   - (NSUInteger)supportedInterfaceOrientations
    {
    return UIInterfaceOrientationMaskLandscapeRight;
  }


-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)orientation
{

  if ((orientation == UIInterfaceOrientationLandscapeRight)||(orientation == UIInterfaceOrientationLandscapeLeft))
{

      isLandScape=YES;

        return YES;

}

else

{

isLandScape=NO;

 return NO;

}

yourObject.frame=CGRectMake(isLandScape?0:0,isLandScape?0:0,isLandScape?1024:768,isLandScape?768:1024);


}

答案 1 :(得分:1)

检查问题How to handle different orientations in iOS 6.在那里查看答案,了解您需要的项目示例。

基本上,您需要在viewcontroller(要旋转的控件)中嵌入自定义导航控制器。在此自定义导航控制器中添加以下方法(如果是横向方向,则可以更改为纵向)。

- (NSUInteger)supportedInterfaceOrientations
{
    return self.topViewController.supportedInterfaceOrientations;
}

并添加到应旋转的视图控制器:

- (BOOL)shouldAutorotate
{
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight;
}

确保在项目中启用纵向,横向右和横向左方向。然后,如果要阻止特定窗口的某些方向:

– application:supportedInterfaceOrientationsForWindow:

答案 2 :(得分:0)

要执行此操作您可以使用此功能:

[[UIDevice currentDevice] performSelector:NSSelectorFromString(@"setOrientation:") withObject:(id)UIInterfaceOrientationPortrait];

您可以在任何地方使用它,但在应用程序委托中(在 didFinishLaunchingWithOptions 中)我必须输入以下代码:

[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];

它完美无缺!

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