如果需要大部分界面只支持豎屏,部分頁面支持橫屏,需要這樣寫:

如果這幾個方法不起作用，那么估計是你的viewcontroller加在了nav中或tab中，再或者加入nav然后nav加入了tab，那么就要重寫nav或tab的這三個方法：

tab中：

- (BOOL)shouldAutorotate{

return [[self.viewControllers objectAtIndex:(int)self.selectedIndex] shouldAutorotate];

}

- (UIInterfaceOrientationMask)supportedInterfaceOrientations{

return [[self.viewControllers objectAtIndex:(int)self.selectedIndex] supportedInterfaceOrientations];

}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{

return [[self.viewControllers objectAtIndex:(int)self.selectedIndex] preferredInterfaceOrientationForPresentation];

}

nav中：

- (BOOL)shouldAutorotate{

return [self.viewControllers.lastObject shouldAutorotate];

}

- (UIInterfaceOrientationMask)supportedInterfaceOrientations{

return [self.viewControllers.lastObject supportedInterfaceOrientations];

}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{

return [self.viewControllers.lastObject preferredInterfaceOrientationForPresentation];

}

最后在需要橫屏或豎屏的controller中再重寫以上三個方法。