iPhone旋转

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于 2017-12-06 18:20:17 发布

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分类专栏： iOS UI 文章标签： iphone 旋转

本文链接：https://blog.youkuaiyun.com/WiKi_Su/article/details/78733605

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本文介绍了如何在iOS应用中处理视频播放时的设备旋转问题，包括通过监听状态栏旋转变化来调整视频视图大小，以及如何在不同旋转情况下实现全屏和竖屏播放的切换。

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Type One

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(statusBarOrientationChange:)name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];

- (void)statusBarOrientationChange:(id)sender{
    self.navigationController.navigationBar.hidden = NO;
    UIDeviceOrientation orientation = [UIDevice currentDevice].orientation;
    if (orientation == UIDeviceOrientationPortraitUpsideDown ) {
        self.playerView.frame = CGRectMake(0,0, ScreenWidth, AREA_HEIGHT(422));
        [self.view updateConstraints];
    };
}

Type Two

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (nonatomic, assign) BOOL allowRotation;//是否允许转向

@end



- (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(nullable UIWindow *)window{


    //只有在视频的播放页面才允许旋转。所以。当允许旋转的时候。
    //如果旋转了就全屏播放视频。 不允许旋转就是竖屏的。
    if (_allowRotation == YES) {

        UIDeviceOrientation orientation = [UIDevice currentDevice].orientation;
        if (orientation == UIDeviceOrientationLandscapeLeft || orientation == UIDeviceOrientationLandscapeRight) {
            return UIInterfaceOrientationMaskLandscape;
        }else { // 横屏后旋转屏幕变为竖屏
            return UIInterfaceOrientationMaskPortrait;
        }

    }else{
        return (UIInterfaceOrientationMaskPortrait);
    }
}

Type Three


@implementation UINavigationController (VideoPlay)

//步骤四：如果Viewcontroller在Navigationcontroller中，需要创建NavigationgController的分类重写以下方法
-(BOOL)shouldAutorotate {
    return [[self.viewControllers lastObject] shouldAutorotate];
}
-(NSUInteger)supportedInterfaceOrientations {
    return [[self.viewControllers lastObject] supportedInterfaceOrientations];
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return [[self.viewControllers lastObject] preferredInterfaceOrientationForPresentation];
}

@end