iOS - 横向模式下的 UIView 不旋转

Question

我正在为 iPhone 和 iPad 编写一个应用程序支持。 iPhone 需要纵向模式，iPad 需要使用横向。

在 AppDelegate.m

if ([CKAppDelegate isPad]) {
    [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight];

    CGSize size = [self getScreenSize];
    navigationController = [[UINavigationController alloc] initWithRootViewController:[[PadMainViewController alloc] initWithFrame:CGRectMake(0, 0, size.width, size.height)]];
} else {
    CGSize size = [self getScreenSize];
    navigationController = [[UINavigationController alloc] initWithRootViewController:[[MainViewController alloc] initWithFrame:CGRectMake(0, 0, size.width, size.height)]];
}

self.window.rootViewController = navigationController;

...

- (CGSize)getScreenSize
{
    CGSize size;
    if (UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation) && [[UIScreen mainScreen] bounds].size.height > [[UIScreen mainScreen] bounds].size.width) {
        // in Landscape mode, width always higher than height
        size.width = [[UIScreen mainScreen] bounds].size.height;
        size.height = [[UIScreen mainScreen] bounds].size.width;
    } else if (UIInterfaceOrientationIsPortrait([UIApplication sharedApplication].statusBarOrientation) && [[UIScreen mainScreen] bounds].size.height < [[UIScreen mainScreen] bounds].size.width) {
        // in Portrait mode, height always higher than width
        size.width = [[UIScreen mainScreen] bounds].size.height;
        size.height = [[UIScreen mainScreen] bounds].size.width;
    } else {
        // otherwise it is normal
        size.height = [[UIScreen mainScreen] bounds].size.height;
        size.width = [[UIScreen mainScreen] bounds].size.width;
    }
    return size;
}

在 PadMainViewController.m

- (id)initWithFrame:(CGRect)frame
{
    UIView *leftView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, frame.size.width * 0.7, frame.size.height)];
    leftView.backgroundColor = [UIColor cyanColor];

    UIView *rightView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, frame.size.width * 0.3, frame.size.height)];
    rightView.backgroundColor = [UIColor yellowColor];

    self.chopInkButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [self.chopInkButton setTitle:@"Tap to ChopInk" forState:UIControlStateNormal];
    self.chopInkButton.frame = CGRectMake(50, 200, 250, 44);
    [self.chopInkButton addTarget:self action:@selector(chopInkButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
    [rightView addSubview:self.chopInkButton];

    self.logoImageView.frame = CGRectMake(50, 50, 100, 100);
    [self.logoImageView.layer setBorderColor:[[UIColor blackColor] CGColor]];
    [self.logoImageView.layer setBorderWidth:2.0f];
    [rightView addSubview:self.logoImageView];

    [self.view addSubview:leftView];
    [self.view addSubview:rightView];
    return self;
}
...
- (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)toInterfaceOrientation
{
    return (UIInterfaceOrientationIsLandscape(toInterfaceOrientation));
}

我得到的结果是

在项目总结中，我已经禁用了 iPad 的纵向模式

知道为什么按钮不旋转吗？

Answer 1

尝试使用以下方法：iOS 6

- (NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskAll;
}

- (BOOL)shouldAutorotate 
{
   return YES;
}

Answer 2

我通过改变来解决这个问题

PadMainViewController.m

- (id)initWithFrame:(CGRect)frame
{
    ...
    return self;
}

到

- (id)initWithFrame:(CGRect)frame
{
    if ((self = [super init])) {
        ...
    }
    return self;
}

顺便说一句，initWithFrame 是自定义函数。