iphone - 为什么我的 UIVIew 会在屏幕外加载？

Question

当我的应用程序启动时，我执行以下代码:

LViewController *aLViewController = [[LViewController alloc] initWithNibName:@"LViewController" bundle:[NSBundle mainBundle]];
self.viewController = aLViewController;
[aLViewController release];  
[window addSubview:[viewController view]];

但是 View 总是加载得有点太高并且隐藏在状态栏后面。我尝试更改 Interface Builder 中的模拟用户元素以包含状态栏，但没有帮助。

Answer 1

将 View 添加到窗口时，必须考虑状态栏的高度:

CGRect statusBarFrame = [[UIApplication sharedApplication] statusBarFrame];
CGSize statusBarSize = statusBarFrame.size;
CGFloat statusBarHeight = statusBarSize.height;

LViewController *aLViewController = [[LViewController alloc] initWithNibName:@"LViewController" bundle:[NSBundle mainBundle]];
self.viewController = aLViewController;
[aLViewController release];  

viewController.view.frame = CGRectMake(0.0f,
                                       statusBarHeight,
                                       window.bounds.size.width,
                                       window.bounds.size.height - statusBarHeight);

[window addSubview:[viewController view]];