如何使用一个 ViewController 文件加载横向 xib？

Posted 2023-02-26

【中文标题】如何使用一个 ViewController 文件加载横向 xib？

【英文标题】：How can I load a landscape xib using one ViewController file?

【发布时间】：2012-05-03 16:02:47

【问题描述】：

我有一个通用应用程序。我为纵向和横向视图使用单独的 xib。当我处于横向时，我有应用程序检测方向并将 BOOL 的值更改为 true。我想知道当BOOL 为真时如何加载我的景观xib。我尝试了几种不同的方法来实现这一点，但没有任何效果。对此问题的任何意见将不胜感激。我可以更新这篇文章以包含任何必要的代码 sn-ps。提前致谢。

编辑：我想在一个 ViewController 类中完成所有这些工作，并且仅适用于 iPad……而不是 iPhone。我已经解决了所有问题。我只需要加载横向 xib。

编辑：在我的viewDidLoad 我正在这样做：

if (userDevice.orientation == UIDeviceOrientationLandscapeLeft || userDevice.orientation == UIDeviceOrientationLandscapeRight) 
    landscape = YES;

这是我的主视图控制器 .m：

@implementation PassportAmericaViewController

@synthesize browseViewButton, webView, mainView, lblMemberName, menuOpen, internetActive, hostActive, isUsingiPad, portrait, landscape;


- (void)viewDidLoad 
menuOpen = NO;

UIDevice* userDevice = [UIDevice currentDevice];
if (userDevice.userInterfaceIdiom == UIUserInterfaceIdiomPad) 
    isUsingiPad = YES;

if (isUsingiPad)
    if (userDevice.orientation == UIDeviceOrientationLandscapeLeft || userDevice.orientation == UIDeviceOrientationLandscapeRight) 
        landscape = YES;

    
[self checkForKey];
[super viewDidLoad];
[self.navigationController setNavigationBarHidden:YES];


-(void)viewWillAppear:(BOOL)animated

[self.navigationController setNavigationBarHidden:YES];


-(void) checkForKey

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
int regCheck = [defaults integerForKey:@"registration"];
if (isUsingiPad) 
    if (regCheck == 0) 

        RegistrationViewController *regView = [[RegistrationViewController alloc]
                                               initWithNibName:@"RegistrationView-iPad" bundle:[NSBundle mainBundle]];
        regView.isUsingiPad = YES;
        [self.navigationController pushViewController:regView animated:YES];

    else if (regCheck == 1) 
        @try 
            NSString *mbrFirstName = [defaults objectForKey:@"firstName"];
            NSString *mbrLastName = [defaults objectForKey:@"lastName"];

            NSMutableString *name = [[NSMutableString alloc] initWithString:mbrFirstName];
            [name appendString:@" "];
            [name appendString:mbrLastName];

            lblMemberName.text = name;
        
        @catch (NSException *exception) 

                
    
else
    if (regCheck == 0) 

        RegistrationViewController *regView = [[RegistrationViewController alloc]
                                               initWithNibName:@"RegistrationView" bundle:[NSBundle mainBundle]];
        [self.navigationController pushViewController:regView animated:YES];

    else if (regCheck == 1) 
        @try 
            NSString *mbrFirstName = [defaults objectForKey:@"firstName"];
            NSString *mbrLastName = [defaults objectForKey:@"lastName"];

            NSMutableString *name = [[NSMutableString alloc] initWithString:mbrFirstName];
            [name appendString:@" "];
            [name appendString:mbrLastName];

            lblMemberName.text = name;
        
        @catch (NSException *exception) 

                
    



-(IBAction) openBrowseView

if (isUsingiPad && landscape) 
        BrowseViewController *browseView = [[BrowseViewController alloc]
                                            initWithNibName:@"BrowseView-iPadLandscape" bundle:[NSBundle mainBundle]];
        browseView.isUsingiPad = YES;
        [self.navigationController pushViewController:browseView animated:YES];
    else if (isUsingiPad)
    BrowseViewController *browseView = [[BrowseViewController alloc]
                                        initWithNibName:@"BrowseView-iPad" bundle:[NSBundle mainBundle]];
    browseView.isUsingiPad = YES;
    [self.navigationController pushViewController:browseView animated:YES];
    else
    BrowseViewController *browseView = [[BrowseViewController alloc]
                                        initWithNibName:@"BrowseView" bundle:[NSBundle mainBundle]];
    [self.navigationController pushViewController:browseView animated:YES];


     

-(IBAction) openViewMore

if (isUsingiPad) 
    ViewMoreViewController *viewMoreView = [[ViewMoreViewController alloc]
                                            initWithNibName:@"ViewMoreView-iPad" bundle:[NSBundle mainBundle]];
    [self.navigationController pushViewController:viewMoreView animated:YES];
    viewMoreView.isUsingiPad = YES;
else
    ViewMoreViewController *viewMoreView = [[ViewMoreViewController alloc]
                                            initWithNibName:@"ViewMoreView" bundle:[NSBundle mainBundle]];
    [self.navigationController pushViewController:viewMoreView animated:YES];
       


-(IBAction) callTollFree:(id)sender 

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel:[phone]"]];



-(IBAction)clickToJoin:(id)sender 

if (isUsingiPad) 
    webView = [[WebViewController alloc]
               initWithNibName:@"WebView-iPad" bundle:[NSBundle mainBundle]];
    webView.url=@"http://www.passport-america.com/Members/JoinRenew.aspx";
    [self.navigationController pushViewController:webView animated:YES];
    webView.isUsingiPad = YES;
else 
    webView = [[WebViewController alloc]
               initWithNibName:@"WebView" bundle:[NSBundle mainBundle]];
    webView.url=@"http://www.passport-america.com/Members/JoinRenew.aspx";
    [self.navigationController pushViewController:webView animated:YES];



-(IBAction) iPadContactUs:(id)sender 

[[UIApplication sharedApplication] openURL:[NSURL URLWithString: @"mailto:[e-mail]"]];



-(void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context 
if ([animationID isEqualToString:@"slideMenu"])
    UIView *sq = (__bridge UIView *) context;
    [sq removeFromSuperview];




-(void) positionViews 

if (isUsingiPad) 
    UIInterfaceOrientation destOrientation = self.interfaceOrientation;
    if (destOrientation == UIInterfaceOrientationPortrait || destOrientation == UIInterfaceOrientationPortraitUpsideDown) 
        PassportAmericaViewController *homeView2 = [[PassportAmericaViewController alloc]
                                             initWithNibName:@"PassportAmericaViewController-iPad" bundle:[NSBundle mainBundle]];
        [self.navigationController pushViewController:homeView2 animated:YES];
        homeView2.isUsingiPad = YES;
        homeView2.portrait = YES;
        homeView2.landscape = NO;
    else
        PassportAmericaViewController *homeView2 = [[PassportAmericaViewController alloc]
                                             initWithNibName:@"PassportAmericaViewController-iPadLandscape" bundle:[NSBundle mainBundle]];
        [self.navigationController pushViewController:homeView2 animated:YES];
        homeView2.isUsingiPad = YES;
        homeView2.portrait = NO;
        homeView2.landscape = YES;

    


- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

if (isUsingiPad) 
    return YES;
else
    // Return YES for supported orientations
    return NO;



-(void) willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration: (NSTimeInterval)duration 
if (isUsingiPad) 
    [self positionViews];
else




- (void)didReceiveMemoryWarning 
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.



@end

【参考方案1】：

编辑

看来你需要在这里做你的工作

BOOL isLandscape = UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation);
NSString *nibName = isLandscape ? @"landscapeNibName" : @"portraitNibName";

RegistrationViewController *regView = [[RegistrationViewController alloc] initWithNibName:nibName bundle:[NSBundle mainBundle]];

---

我不确定你在哪里卡住了......

- (id)init;

    BOOL isLandscape = UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation);
    NSString *nibName = isLandscape ? @"landscapeNibName" : @"portraitNibName";
    
    self = [super initWithNibName:nibName bundle:nil];
    if (self) 
        // any other init stuff
    
    return self;

或者如果您更喜欢在实例化时命名 nib

BOOL isLandscape = UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation);
NSString *nibName = isLandscape ? @"landscapeNibName" : @"portraitNibName";

MyViewController *viewController = [[MyViewController alloc] initWithNibName:nibName bundle:nil];

【讨论】：

我不知道在哪里加载新的 xib。我已经将名为 Landscape 的 BOOL 设置为 yes。我尝试在 viewWillAppear 中加载 xib，我什至尝试在 viewDidLoad 中设置 if 语句以尝试让它覆盖原始 xib。我陷入了无限循环。

你想在某个方向加载 viewController 吗？还是您正在努力应对方向变化？

当方向为横向时，我希望它加载横向 xib 而不是纵向 xib。我可以控制方向的变化。当应用程序加载时，我可以毫无问题地从纵向 xib 更改为横向 xib。当我处于横向时，我只想完全绕过纵向 xib。如果我解决了...我可以通过该景观 BOOL 并从那时起成为肉汁。

那么上面的代码你试过了吗？两者都将加载正确的笔尖。要么通过将它放在 viewcontrollers 的 init 方法中使用第一种方法，要么在你实际分配/初始化视图控制器的地方使用第二种方法

我试过了，但是我没有init方法。我尝试在 viewDidLoad 中做一些事情，但这会导致我陷入无限循环。我尝试创建一个 init 方法，但它永远不会被调用，除非我在 viewDidLoad 中调用它......这也会导致循环。我以前从未尝试过这样做……这就是我遇到这么多麻烦的原因。哈哈。