iOS屏幕旋转

- (void)viewDidLoad {

    [superviewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    

    

// 检测设备方向改变

    [[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(test:)name:UIDeviceOrientationDidChangeNotificationobject:nil];

    

}

- (void)test:(NSNotification *)noti{

    switch ([UIDevicecurrentDevice].orientation) {

        caseUIDeviceOrientationPortrait:  NSLog(@"正常"); break;

        caseUIDeviceOrientationLandscapeLeft: NSLog(@"向左"); break;

        caseUIDeviceOrientationLandscapeRight: NSLog(@"向右"); break;

        default:

            break;

    }

}