在iOS的外部显示器上全屏显示

Question

我只想在外部显示器上全屏显示。

我正在使用这样的代码：

- (void) startTvOut {
    NSArray *screens = [UIScreen screens];

    CGSize max;
    max.width = 0;
    max.height = 0;
    UIScreenMode *maxScreenMode = nil;
    for (UIScreen *screen in screens)
    {

        if (screen != [UIScreen mainScreen])
        {
            for(int i = 0; i < [[screen availableModes] count]; i++)
            {
                UIScreenMode *current = [[screen availableModes] objectAtIndex: i];
                if (current.size.width > max.width)
                {
                    max = current.size;
                    maxScreenMode = current;
                }
            }
            if (exWindow == nil)
            {
                exWindow = [[HUWindow alloc] initWithFrame:screen.brounds];
                exWindow.backgroundColor = [UIColor whiteColor];
            }
            screen.overscanCompensation = UIScreenOverscanCompensationInsetBounds;
            screen.currentMode = screen.preferredMode;
            exWindow.screen = screen;

            [exWindow makeKeyAndVisible];
            m_isStarted = YES;
        }
    }
}

无法在外部设备上显示全屏。

我改变代码后 从 screen.overscanCompensation = UIScreenOverscanCompensationInsetBounds; 至 screen.overscanCompensation = UIScreenOverscanCompensationInsetApplicationFrame;它可以显示全屏，但点（0,0）不在左侧屏幕的顶部。

我的目标是以全屏显示屏幕并在屏幕的左上角显示点（0,0）。但它不起作用。

提前致谢

Answer 1

更改此行：

screen.overscanCompensation = UIScreenOverscanCompensationInsetBounds;

到

screen.overscanCompensation = 3;

这是一个没有记录的价值......

Answer 2

对我来说，以下代码解决了该问题（XCode 4，iOS 12.1）

screen.overscanCompensation = .scale

在添加此行之前，我遇到了问题，屏幕周围有黑框。