iOS - 横向模式下的 UIView 不旋转

Posted 2023-03-12

【中文标题】iOS - 横向模式下的 UIView 不旋转

【英文标题】：iOS - UIView in landscape mode is not rotating

【发布时间】：2013-03-14 07:39:39

【问题描述】：

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？

【参考方案1】：

尝试使用以下方法：ios 6

- (NSUInteger)supportedInterfaceOrientations

    return UIInterfaceOrientationMaskAll;


- (BOOL)shouldAutorotate 

   return YES;

【讨论】：

仍然无法正常工作。顺便说一句，我将部署目标设置为 5.0

【参考方案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。