ios 屏幕旋转监测

最近做一个视频播放的页面，要有全屏播放的功能，所以需要检测屏幕的旋转的方向

代码如下

方法一

先添加通知

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

通知调用方法

- (void)change:(NSNotification *)noti
{
    UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
    if (orientation == UIInterfaceOrientationPortrait) {
        NSLog(@"UIInterfaceOrientationPortrait");
    }else if (orientation == UIInterfaceOrientationPortraitUpsideDown) {
        NSLog(@"UIInterfaceOrientationPortraitUpsideDown");
    }else if (orientation == UIInterfaceOrientationLandscapeLeft) {
        NSLog(@"UIInterfaceOrientationLandscapeLeft");
    }else if (orientation == UIInterfaceOrientationLandscapeRight){
        NSLog(@"UIInterfaceOrientationLandscapeRight");
    }else {
        NSLog(@"UIInterfaceOrientationUnknown");
    }
}

方法二

也可以用下面的方法

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id)coordinator
{
    UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
    if (orientation == UIInterfaceOrientationPortrait) {
        NSLog(@"UIInterfaceOrientationPortrait");
    }else if (orientation == UIInterfaceOrientationPortraitUpsideDown) {
        NSLog(@"UIInterfaceOrientationPortraitUpsideDown");
    }else if (orientation == UIInterfaceOrientationLandscapeLeft) {
        NSLog(@"UIInterfaceOrientationLandscapeLeft");
    }else if (orientation == UIInterfaceOrientationLandscapeRight){
        NSLog(@"UIInterfaceOrientationLandscapeRight");
    }else {
        NSLog(@"UIInterfaceOrientationUnknown");
    }
}