在不需要的视野时触发备用景观 [英] Alternate landscape triggered at unwanted view

问题描述

我有一个包含图像和tableview的视图控制器.通过此视图控制器，我将segue连接到了包含全屏图像的横向视图(当您从Apple侧向旋转股票应用程序以全屏查看图形时，使用了相同的想法.)

I have a view controller that contains an image and a tableview. From this view controller I connected a segue to a landscape view that contains the image in full screen (same idea used when you turn sideways the Stocks app from Apple to see the graph in full screen).

此segue通过以下方法调用:

This segue is called by the following method:

- (void)updateLandscapeView
{
    UIDeviceOrientation deviceOrientation = [UIDevice currentDevice].orientation;
    if (UIDeviceOrientationIsLandscape(deviceOrientation) && !isShowingLandscapeView)
    {
        [self performSegueWithIdentifier: @"toGraph" sender: self];
        isShowingLandscapeView = YES;
    }
    else if (deviceOrientation == UIDeviceOrientationPortrait && isShowingLandscapeView)
    {
        [self dismissViewControllerAnimated:YES completion:nil];
        isShowingLandscapeView = NO;
    }
}

此外，当iPhone处于纵向方向时，我还可以在桌面视图中向下钻几个级别.问题如下:在那些相应的级别上，当我将方向转到风景时，仍然会触发对风景视图的选择！...我该怎么做才能避免这种情况发生?我只想从包含图片的第一个视图转到横向模式.

Besides this, when the iphone is at portrait orientation, I can also drill-down the tableview a couple more levels. The problem is the following: at those consequent levels, the segue to the landscape view still gets triggered when I turn the orientation to landscape!... what can I do so that this does not happen? I am only interested in going to landscape mode from the first view which contains the image.

先谢谢您！

推荐答案

我不确定我是否正确解决了您的问题.导航控制器层次结构，您可以尝试以下操作.

I don't know for sure if I got your issue right.. but if you mean with "drill-down the table view" to go deeper in a navigation controller hierachy, you can try the following..

这就是我在(我认为)类似情况下所做的事情:

That's what I did in a (I think) similar situation:

AppDelegate:

AppDelegate:

在.h中:

@property (nonatomic) BOOL shouldAutorotate;

在.m中:

//在didFinishLaunchingWithOptions中:

// in didFinishLaunchingWithOptions:

self.shouldAutorotate = NO;

//仍在.m文件中

// Autorotation handling
- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
    return self.shouldAutorotate ?
    UIInterfaceOrientationMaskAllButUpsideDown :
    UIInterfaceOrientationMaskPortrait;
}

导航控制器呈现人像控制器

Navigation Controller presenting Portrait Controller

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (NSUInteger)supportedInterfaceOrientations
{
    if (self.selectedViewController)
        return [self.selectedViewController supportedInterfaceOrientations];

    return UIInterfaceOrientationMaskPortrait;
}

- (BOOL)shouldAutorotate
{
    return YES;
}

Portrait View Controller(这也是您所执行的非常类似的segue处理):

Portrait View Controller (here's also a very similar segue handling that you have):

在viewWillAppear中:

in viewWillAppear:

[(AppDelegate *)[[UIApplication sharedApplication] delegate] setShouldAutorotate:YES];

旋转处理:

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (BOOL)shouldAutorotate
{
    return NO;
}

- (NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}

Landscape View Controller(可能是全屏图像):

Landscape View Controller (probably your full screen image):

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

- (BOOL)shouldAutorotate
{
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskLandscape;
}

导航控制器层次结构中的更深层(仅需要肖像):

Deeper in the navigation controller hierachy (where only portrait is wanted):

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (BOOL)shouldAutorotate
{
    return NO;
}

- (NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}

看起来有些复杂，但这是唯一的方法，我设法使这些轮换功能在iOS5和6中都能正常工作.

Looks somehow complicated, but that was the only way, I managed to get those rotation things working properly in both iOS5 and 6.

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