隐藏iPhone X的主页指示器

Question

我有一个带视频播放器的iOS应用程序,当视频播放时(横向,全屏)我想隐藏iPhone X上的家用指示器.我试过

if (@available(iOS 11.0, *)) {
     [self setNeedsUpdateOfHomeIndicatorAutoHidden];
}

并且

-(BOOL)prefersHomeIndicatorAutoHidden{
   return YES;
}

但没有运气.有谁有想法吗？

Answer 1

在实现容器视图控制器时，如果希望子视图控制器确定是否显示可视指示器，则重写 childViewControllerForHomeIndicatorAutoHidden（）方法。如果这样做，系统将调用返回的视图控制器的preferredsHomeIndicatorAutoHidden（）方法。如果该方法返回nil，则系统调用当前视图控制器的preferredsHomeIndicatorAutoHidden（）方法

因此，如果您正在使用，childViewController则需要实现childViewControllerForHomeIndicatorAutoHidden 为-

迅速

extension UINavigationController {
    open override func childViewControllerForHomeIndicatorAutoHidden() -> UIViewController? {
        return DemoViewController.loadFromNib()
    }
}

//DemoViewController is childViewController
class DemoViewController: UIViewController {
    static func loadFromNib() -> DemoViewController{
        let storyBoardInst = UIStoryboard(name: "Main", bundle: nil)
        return storyBoardInst.instantiateViewController(withIdentifier: "DemoViewController") as! DemoViewController
    }

    override func prefersHomeIndicatorAutoHidden() -> Bool {
        return true
    }
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(true)
        view.backgroundColor = .red
        if #available(iOS 11.0, *) {
            //Notifies UIKit that your view controller updated its preference regarding the visual indicator
            setNeedsUpdateOfHomeIndicatorAutoHidden()
        }
    }
}

目标C-

@interface UINavigationController(custom)
@end
@implementation UINavigationController(custom)
-(UIViewController *)childViewControllerForHomeIndicatorAutoHidden{
    return [self.storyboard  instantiateViewControllerWithIdentifier:@"DemoViewController"];
}
@end
    //DemoViewController is childViewController
@interface DemoViewController ()
@end
@implementation DemoViewController
-(BOOL)prefersHomeIndicatorAutoHidden{
    return true;
}
-(void)viewDidAppear:(BOOL)animated{
    [super viewDidAppear:YES];
    self.view.backgroundColor = [UIColor redColor];
    //Notifies UIKit that your view controller updated its preference 
     regarding the visual indicator
    if (@available(iOS 11.0, *)) {
        [self setNeedsUpdateOfHomeIndicatorAutoHidden];
    }
}

输出-