IOS横竖屏切换

最新推荐文章于 2023-06-12 20:45:43 发布

原创最新推荐文章于 2023-06-12 20:45:43 发布 · 340 阅读

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【1】在AppDelegate中加入下面代码，使UINavigationController支持横竖屏切换

#pragma mark - LandScapeUINavigation

@interface UINavigationController (LandScapeUINavigation)

- (BOOL)shouldAutorotate;

@end

@implementation UINavigationController (LandScapeUINavigation)

-(BOOL)shouldAutorotate
{
    return [self.viewControllers.lastObject shouldAutorotate];
}

- (NSUInteger)supportedInterfaceOrientations
{
    return [self.viewControllers.lastObject supportedInterfaceOrientations];
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return [self.viewControllers.lastObject preferredInterfaceOrientationForPresentation];
}

@end

【2】在AppDelegate中的didFinishLaunchingWithOptions中设置rootViewController

    HomeViewController *homeCtrl = [[HomeViewController alloc] init];
    UINavigationController *navCtrl = [[UINavigationController alloc] initWithRootViewController:homeCtrl];
    navCtrl.navigationBarHidden = YES;
    self.window.rootViewController = navCtrl;
    return YES;

【3】在AppDelegate加入下列代码

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
    return UIInterfaceOrientationMaskAll;
}

-(NSUInteger)supportedInterfaceOrientations{
    return UIInterfaceOrientationMaskAll;
}

- (BOOL)shouldAutorotate
{
    return YES;
}

【4】在想要横屏的controller中加入代码

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    NSLog(@"shouldAutorotateToInterfaceOrientation");
    // Return YES for supported orientations
    return ((interfaceOrientation == UIInterfaceOrientationLandscapeLeft)
            ||(interfaceOrientation == UIInterfaceOrientationLandscapeRight));
}

- (NSUInteger)supportedInterfaceOrientations {
    NSLog(@"supportedInterfaceOrientations");
    return UIInterfaceOrientationMaskLandscape;
}

- (BOOL)shouldAutorotate {
    NSLog(@"shouldAutorotate");
    return YES;
}

【5】使UIImagePickerController支持横屏，加入下列代码

@interface UIImagePickerController (LandScapeImagePicker)

- (BOOL)shouldAutorotate;

@end

@implementation UIImagePickerController (LandScapeImagePicker)

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

- (NSUInteger)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskLandscape;
}

- (BOOL)shouldAutorotate {
    return YES;
}

@end