Question

我的要求是我的第一个视图控制器仅在纵向模式下打开。当用户转到第二个视图控制器时，我希望控制器处于横向模式，我该怎么办呢

我试过这段代码

1st ViewController.m

- (BOOL)shouldAutorotate
{
    returnc YES;
}

-(NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{

    return UIInterfaceOrientationMaskPortrait;

}
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interface
{

    return (interface==UIInterfaceOrientationMaskPortrait);
}

第二个ViewController.m的代码

- (BOOL)shouldAutorotate
{
    return YES;
}

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskLandscapeRight | UIInterfaceOrientationMaskLandscapeLeft;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationLandscapeRight;

    //return UIInterfaceOrientationMaskLandscape;
}




- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationLandscapeRight || interfaceOrientation == UIInterfaceOrientationLandscapeLeft);
}

这对我来说不行。

Answer 1

-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
    return UIInterfaceOrientationIsPortrait(toInterfaceOrientation);
}

<强>更新：

您可以通过创建UINaviagationController的类别

来完成此操作 .h文件的

代码是

@interface UINavigationController (autorotation)

-(BOOL)shouldAutorotate;
-(NSUInteger)supportedInterfaceOrientations;

和.m文件的代码是

 @implementation UINavigationController (autorotation)

    -(BOOL)shouldAutorotate
    {

        UIInterfaceOrientation interfaceOrientation = [UIApplication sharedApplication].statusBarOrientation;
        [self.topViewController shouldAutorotate];
        return YES;

    }

    -(NSUInteger)supportedInterfaceOrientations
    {
        return UIInterfaceOrientationMaskAll;

    }
    @end

Answer 2

在第二个视图控制器的viewcontroller .m文件中粘贴以下代码（在@implementation部分下）

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationLandscapeRight || interfaceOrientation == UIInterfaceOrientationLandscapeLeft);
}

现在选择故事板中的第二个视图控制器（选择由视图控制器周围的蓝色边框表示），转到属性检查器（右侧'盾'像图像一样）将方向更改为横向..就是这样..。告诉我如果它不适合你。 ..：）

Answer 3

我正在使用Category解决我的问题.... 添加新文件并选择Category并创建子类UINavigationController类。

这是.h

的类别代码

    #import <UIKit/UIKit.h>
    #import "AppDelegate.h"

    @interface UINavigationController (orientation)

    @end

code for .m file

#import "UINavigationController+orientation.h"

@implementation UINavigationController (orientation)

- (BOOL)shouldAutorotate
{
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{

    AppDelegate * delegate=(AppDelegate *)[[UIApplication sharedApplication]delegate];

    if (delegate.islandscape)
    {
        // for iPhone, you could also return UIInterfaceOrientationMaskAllButUpsideDown
        return UIInterfaceOrientationMaskLandscape;

    }
    return UIInterfaceOrientationMaskPortrait;

}
@end

在App委托中声明isLandscape以检查天气第一个视图控制器或第二个视图控制器isLandscape是Bool。

现在FirstViewController.m文件我希望在Portarit模式中使用此代码

- (IBAction)PlayClicked:(id)sender
{
    AppDelegate * delegate=(AppDelegate *)[[UIApplication sharedApplication]delegate];


    self.navigationController.navigationBarHidden=YES;
    delegate.islandscape=YES;

    ViewController * v=[[ViewController alloc]initWithNibName:@"ViewController" bundle:nil];

    [self presentViewController:v animated:NO completion:nil];


    //[self dismissViewControllerAnimated:YES completion:nil];
   [self.navigationController pushViewController:v animated:YES];

}


- (NSInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}

和SecondViewController我希望在横向模式下使用这个。

delegate.islandscape=NO;   // called transfer to Category 

- (NSInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskLandscape;
}

Portrait中的第一个ViewController和横向模式下的SecondViewController

3 个答案: