禁止横屏(三个方法放到VC里面 纯代码)

//禁止屏幕旋转(在UIApplication中实现的代码)
- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
    return UIInterfaceOrientationMaskPortrait;
}

 

 

//phone只支持正方向，

//此方法是ios6.0以前版本控制屏幕旋转的方法(6.0及以后已经被 弃用,,被supportedInterfaceOrientations,,shouldAutorotate两个方法所代替)
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
{
    return UIInterfaceOrientationIsPortrait(toInterfaceOrientation);
}
//6.0以后控制屏幕旋转的方法
- (BOOL)shouldAutorotate
{
    return NO;
}
-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}
-(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationPortrait;

}