IOS-外部（hdmi）输出仅占屏幕的一半，手动编码视图时除外

因此，正如标题所说，我在iPad上有一个hdmi，一个观察员注册了屏幕连接，在连接后，用户选择res并输出一个视图

但是，如果我从nib加载视图，甚至从编程视图控制器加载视图，ipad会以纵向显示横向视图（是的，两种情况都设置为横向）

即

这是否：

如果我以编程方式创建视图本身。像这样：

UIView *test = [[UIView alloc] initWithFrame:[externalScreen applicationFrame]];
[test setBackgroundColor:[UIColor whiteColor]];
UILabel *msgLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 40, 100, 30)];
msgLabel.text = @"External!";
[test addSubview:msgLabel];

它就像某种形式的魔法梦：

但是，我希望viewcontroller加载（并工作！），因此，StackOverflow，我要求您。以前有人见过这个吗

编辑：不言而喻，常见的感性答案不会得到赏金，我想要的是修复，而不是解决办法。在我有限的大脑中，我所能做的就是创建一个方法，根据输入创建一个视图，并补充说，作为外部监视器的子视图，很明显这是一个黑客解决方案，因此修复是值得赞赏的！谢谢

编辑：

-(id)initWithFrame:(CGRect)_rect 
{
    rect = _rect;
    if (self = [super init]) 
    {
        externalView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"105.png"]];
        externalView.alpha = 0.0;
        [externalView setFrame:rect];
        [externalView setBackgroundColor:[UIColor yellowColor]];
        self.view = [[UIView alloc] initWithFrame:rect];
        self.view.backgroundColor = [UIColor whiteColor];

        return self;
    }
}

- (void)loadView
{
    self.view = [[UIView alloc] initWithFrame:rect];
    self.view.backgroundColor = [UIColor blackColor];
    [self.view addSubview:externalView];
}

---

根据要求，这是我加载viewcontroller的方式，使用外部屏幕的大小初始化。谢谢

只需在UIViewController子类的

-（BOOL）shouldAutorotateToInterfaceOrientation:（UIInterfaceOrientation）interfaceOrientation中返回
NO

// ugly, don't use this in real code

if ([UIScreen screens].count == 1) return; // just one screen, eww.

// getting the secondary screen
UIScreen *screen = [[UIScreen screens] objectAtIndex:1];

__block UIScreenMode *highestWidthMode = NULL;

[screen.availableModes enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
  UIScreenMode *currentModeInLoop = obj;
  if (!highestWidthMode || currentModeInLoop.size.width > highestWidthMode.size.width)
    highestWidthMode = currentModeInLoop;
}];

// setting to the highest resolution available
screen.currentMode = highestWidthMode;

NSLog(@"screen.currentMode = %@", screen.currentMode);
screen.overscanCompensation = UIScreenOverscanCompensationScale;


// initializing screen
secondWindow = [[UIWindow alloc] initWithFrame:[screen bounds]];
[secondWindow setScreen:screen];

// other view is a UIViewController, just remember to return NO in - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation or the iOS will rotate the frame.

UIViewController *vc = [[OtherView alloc] initWithNibName:@"OtherView" bundle:nil];
secondWindow.rootViewController = vc;
[secondWindow makeKeyAndVisible];

“纵向横向视图”是否被截断或旋转？我的意思是，如果你像第二个例子中那样添加标签，它是显示在屏幕的左上角，还是以90度角显示在左下角？对不起，应该解释一下。当你在屏幕的一半看到视图时，它是横向的，但是旋转的。因此，如果我添加一个标签，它会显示它随文本从下到上旋转。您是否可以包含“无笔尖”视图控制器的
loadView
方法中的代码，显示如何创建视图，从何处获取外部显示的尺寸等？观察：在顶部示例中，看起来像是将外部视图控制器添加到UIWindow，但第二个视图控制器看起来像是添加到UIScreen？不，在视图控制器的情况下，它被设置为根视图。在视图的情况下，它只是作为子视图添加的。不，尝试了。我相信这个视图真的相信它在横向上输出到必要的屏幕上。
// ugly, don't use this in real code

if ([UIScreen screens].count == 1) return; // just one screen, eww.

// getting the secondary screen
UIScreen *screen = [[UIScreen screens] objectAtIndex:1];

__block UIScreenMode *highestWidthMode = NULL;

[screen.availableModes enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
  UIScreenMode *currentModeInLoop = obj;
  if (!highestWidthMode || currentModeInLoop.size.width > highestWidthMode.size.width)
    highestWidthMode = currentModeInLoop;
}];

// setting to the highest resolution available
screen.currentMode = highestWidthMode;

NSLog(@"screen.currentMode = %@", screen.currentMode);
screen.overscanCompensation = UIScreenOverscanCompensationScale;


// initializing screen
secondWindow = [[UIWindow alloc] initWithFrame:[screen bounds]];
[secondWindow setScreen:screen];

// other view is a UIViewController, just remember to return NO in - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation or the iOS will rotate the frame.

UIViewController *vc = [[OtherView alloc] initWithNibName:@"OtherView" bundle:nil];
secondWindow.rootViewController = vc;
[secondWindow makeKeyAndVisible];