iOS 视频播放自动横屏

一、通过这个方法改变状态栏方向，枚举设置状态栏方向

 [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeLeft animated:YES];

需要在viewController中重写

- (BOOL)shouldAutorotate
{
    return YES;
}

注意:返回值为YES。

如果此viewController在某个CustomNavigationController中需要在AppDelegate中写个类目

//添加导航栏的扩展
@implementation CustomNavigationController (Rotation)

- (BOOL)shouldAutorotate
{    
    //在viewControllers中返回需要改变的viewController
    for (UIViewController *vc in self.viewControllers) {
        if ([vc isKindOfClass:[XXXXViewController class]]) {
            return [vc shouldAutorotate];
        }
    }
    return NO;
}
@end

如果此CustomNavigationController在某个CusTabbarViewController中需要在AppDelegate中再写个类目

//添加Tabbar的扩展
@implementation CusTabbarViewController (Rotation)
- (BOOL)shouldAutorotate
{ 
    //在viewControllers中返回需要改变的viewController
    for (UIViewController *vc in self.viewControllers) {
        if ([vc isKindOfClass:[XFPlayerViewController class]]) {
            return [vc shouldAutorotate];
        }
    }  
    return NO;
}
@end

二、iOS8 横屏状态栏不显示解决方法:
使用完上面的方法之后发现状态栏确实是改变方向了，但是状态栏不显示出来~
1：在plist文件中将 View controller-based status bar appearance 设置为NO

plist文件添加设置.png

2：还需要application:didFinishLaunchingWithOptions:中添加以下下面代码(下面的两段代码必不可少)

AppDelegate.png

[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationNone]; 
[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationNone];

注意:横屏返回后，会出现页面整体上移的问题。解决方案如下：
对状态栏和导航栏同事做改动的时候，先改变状态栏的变化，然后在改变导航栏的变化。

//切记先改变状态栏的变化，后改变导航栏的变化。防止页面上移
[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight animated:YES];
self.navigationController.navigationBar.hidden = YES;
self.navigationController.navigationBar.translucent = YES;  

如果没有效果，可以试试在plist文件中添加：
Status bar is initially hidden=YES 和
View controller-based status bar appearance= NO

plist.png

三、监听设备方向，自动横屏播放（需要关闭设备竖屏锁定）
1.在View或者ViewController里面监听设备方向更改的通知方法
下面示例是在View里面监听的通知：

//旋转屏幕通知  
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onDeviceOrientationChange) name:UIDeviceOrientationDidChangeNotification object:nil];
//在delloc里面移除通知
[[NSNotificationCenter defaultCenter] removeObserver:self];

#pragma mark - 监听设备方向和全屏
- (void)onDeviceOrientationChange
{
   UIDeviceOrientation orientation = [UIDevice currentDevice].orientation;
    UIInterfaceOrientation interfaceOrientation = (UIInterfaceOrientation)orientation;
    switch (interfaceOrientation) {
        case UIInterfaceOrientationPortraitUpsideDown:{
            NSLog(@"第3个旋转方向---电池栏在下");
        }
            break;
        case UIInterfaceOrientationPortrait:{
            NSLog(@"第0个旋转方向---电池栏在上");
            if (!self.toolsView.isHalfScreen) {
                NSLog(@"大屏");
                [self screenRotatingIdentity];
            } else {
                NSLog(@"小屏");
            }
        }
            break;
        case UIInterfaceOrientationLandscapeLeft:{
            NSLog(@"第2个旋转方向---电池栏在左");
            [self screenRotatingWithDirection:interfaceOrientation];
        }
            break;
        case UIInterfaceOrientationLandscapeRight:{
            NSLog(@"第1个旋转方向---电池栏在右");
            [self screenRotatingWithDirection:interfaceOrientation];
        }
            break;
        default:
            break;
    }    
}

  //左右、上下旋转屏幕
- (void)screenRotatingWithDirection:(UIInterfaceOrientation)direction
{
    _toolsView.isHalfScreen = NO;

    CGAffineTransform transform = direction == UIInterfaceOrientationLandscapeLeft ? CGAffineTransformMakeRotation(-(M_PI / 2)) : CGAffineTransformMakeRotation(M_PI / 2);
    [UIView animateWithDuration:0.3 animations:^{
        self.transform = transform;
    } completion:nil];
    self.frame = self.bigFrame;
    //记录上次设备方向 （在控制器里面更改方向有问题时使用）
    if (_lastDevDir == UIInterfaceOrientationLandscapeLeft || _lastDevDir == UIInterfaceOrientationLandscapeRight) {
        _videoController.view.frame = CGRectMake(0.f, 0.f, DEVICE_HEIGHT, DEVICE_WIDTH);
    }
    _lastDevDir = interfaceOrientation;
    //此处一定要先改变状态栏再改变导航栏，否则页面上移
    [[UIApplication sharedApplication] setStatusBarOrientation:direction animated:YES];
    [UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleLightContent;
    [GlobalTool sharedTool].currentViewController.navigationController.navigationBar.hidden = YES;
    [GlobalTool sharedTool].currentViewController.navigationController.navigationBar.translucent = YES;
}


//屏幕还原
- (void)screenRotatingIdentity
{
    [self.toolsView hideOperationView:NO];
    _toolsView.isHalfScreen = YES;
    [UIView animateWithDuration:0.3 animations:^{
        self.transform = CGAffineTransformIdentity;
    } completion:nil];
    //记录上次设备方向 （在控制器里面更改方向有问题时使用）
   // _lastDevDir = UIInterfaceOrientationPortrait;
    self.frame = self.smallFrame;
    //此处一定要先改变状态栏再改变导航栏，否则页面上移
    [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait animated:YES];
    [UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleDefault;
    [GlobalTool sharedTool].currentViewController.navigationController.navigationBar.hidden = NO;
    [GlobalTool sharedTool].currentViewController.navigationController.navigationBar.translucent = NO;
}

慢慢来，一步一个巴掌印。。。。。