iOS 13获取状态栏高度及iOS 11 适配不同机型

iOS 13 弃用了 UIApplication 对象的 statusBarFrame属性

iOS 13 获取状态栏高度

CGFloat statusHeight = appDelegate.window.windowScene.statusBarManager.statusBarFrame.size.height;
NSLog(@"状态栏：%lf", statusHeight);

以iPhone 11为例

iOS 11适配

仅针对非分屏模式。
获取window 的安全区域，此 window 指的是应用程序的主窗口，即 AppDelegate 对象中的属性 window。设为 insets, 最底层子视图硬编码形式布局如下：

    AppDelegate *appDelegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
    UIEdgeInsets insets = appDelegate.window.safeAreaInsets;
    NSLog(@"安全区域：%lf, %lf, %lf, %lf", insets.top, insets.left, insets.bottom, insets.right);

    UIView *view = [[UIView alloc] initWithFrame:CGRectMake(20, insets.top, self.view.frame.size.width - 20 * 2, self.view.frame.size.height - insets.top - insets.bottom)];
    [self.view addSubview:view];
    view.backgroundColor = [UIColor redColor];

iPhone SE / iPhone 8 / iPhone 8 Plus iPhone 11 iPhone 11 Pro / iPhone11 Pro Max iPhone 12 / iPhone 12 Pro / iPhone 12 Pro Max iPhone 12 mini