ios - 将 subview 添加到外部屏幕(iOS5)

Question

我有一个 View Controller ，称为 TVOutViewController (.h & .m)，它应该处理我的外部屏幕。我如何“告诉” View Controller 这样做？

我已经做了什么:

NSLog(@"Current Number of screens: %i", [[UIScreen screens] count]);


if([[UIScreen screens]count] > 1) {

    CGSize maxSize;
    UIScreenMode *maxScreenMode;

    for(int i = 0; i < [[[[UIScreen screens] objectAtIndex:1] availableModes]count]; i++)
    {
        UIScreenMode *current = [[[[UIScreen screens]objectAtIndex:1]availableModes]objectAtIndex:i];
        if(current.size.width > maxSize.width)
        {
            maxSize = current.size;
            maxScreenMode = current;
        }
    }
    UIScreen *externalScreen = [[UIScreen screens] objectAtIndex:1];
    externalScreen.currentMode = maxScreenMode;

所以现在我的数组中有一个外部屏幕(并且已识别)。但是我如何向这个屏幕添加(例如)标签？

有没有这样的方法:

 Screen Handled by the TVOutViewController = TheExternalScreen //Pseudocode
 [Screen Handled by the TVOutViewController addSubview: aLabel]; //Pseudocode

谢谢!

Answer 1

明白了。 UIWindow 必须全局定义!