//appdelegate.h

@property (nonatomic,assign)BOOL allowRotation;

//appdelegate.m

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

if (self.allowRotation) {

return UIInterfaceOrientationMaskAll;

}

return UIInterfaceOrientationMaskPortrait;

}

//视频播放页viewdidload

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(begainFullScreen) name:UIWindowDidBecomeVisibleNotification object:nil];//进入全屏

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(endFullScreen) name:UIWindowDidBecomeHiddenNotification object:nil];//退出全屏

//视频播放页

// 进入全屏

-(void)begainFullScreen

{

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

appDelegate.allowRotation = YES;

}

// 退出全屏

-(void)endFullScreen

{

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

appDelegate.allowRotation = NO;

//强制归正：

if ([[UIDevice currentDevice] respondsToSelector:@selector(setOrientation:)]) {

SEL selector = NSSelectorFromString(@"setOrientation:");

NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[UIDevice instanceMethodSignatureForSelector:selector]];

[invocation setSelector:selector];

[invocation setTarget:[UIDevice currentDevice]];

int val =UIInterfaceOrientationPortrait;

[invocation setArgument:&val atIndex:2];

[invocation invoke];

}

}