ios - 使用自动调整大小时，UIView 不会在旋转时调整大小

Question

我有一个以横向模式启动的应用程序，并且我创建了以下 UIView 以全屏显示。

- (void)loadSignupScreen {

CGFloat screenHeight = self.view.frame.size.height;
CGFloat screenWidth = self.view.frame.size.width;

self.signupContainer = [[UIView alloc] initWithFrame:self.view.bounds];
[self.signupContainer setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleBottomMargin|UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleRightMargin|UIViewAutoresizingFlexibleTopMargin];

UIImageView *bgImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, screenWidth, screenHeight)];
[bgImageView setBackgroundColor:[UIColor darkGrayColor]];
[bgImageView setAlpha:0.8];


[self.signupContainer addSubview:bgImageView];
[self.view addSubview:self.signupContainer];

问题是，当我将屏幕旋转为纵向时，它不是全屏，而是看起来只有屏幕长度的 3/4 左右。如何让它在旋转时填满屏幕？在编程时使用 IB 中的自动调整大小没有问题。

谢谢

Answer 1

您将错误的 autoresizingMask 分配给了 signupContainer。它应该只是灵活的高度和宽度。

[self.signupContainer setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];

此外，UIImageView 需要一个 autoresizingMask。

UIImageView *bgImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, screenWidth, screenHeight)];
[bgImageView setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];