1、屏幕旋转
使用有三个前提条件
1、根控制是UIViewController
2、根控制是UINavigationController
3、根控制是UITabBarController
注意：：不同的根控制器情况下，使用方式不同。
你还需要了解的
// Note that UIInterfaceOrientationLandscapeLeft is equal to UIDeviceOrientationLandscapeRight (and vice versa).
请注意, UIInterfaceOrientationLandscapeLeft 等于 UIDeviceOrientationLandscapeRight (反之亦然)
// This is because rotating the device to the left requires rotating the content to the right.
这是因为将设备向左旋转需要将内容向右旋转
typedef NS_ENUM(NSInteger, UIInterfaceOrientation) {
UIInterfaceOrientationUnknown = UIDeviceOrientationUnknown,
UIInterfaceOrientationPortrait = UIDeviceOrientationPortrait,
UIInterfaceOrientationPortraitUpsideDown = UIDeviceOrientationPortraitUpsideDown,
UIInterfaceOrientationLandscapeLeft = UIDeviceOrientationLandscapeRight,
UIInterfaceOrientationLandscapeRight = UIDeviceOrientationLandscapeLeft
} __TVOS_PROHIBITED;
/* This exception is raised if supportedInterfaceOrientations returns 0, or if preferredInterfaceOrientationForPresentation
returns an orientation that is not supported.
如果 supportedInterfaceOrientations 返回 0, 则引发此异常。如果preferredInterfaceOrientationForPresentation返回不支持的方向
*/
UIKIT_EXTERN NSExceptionName const UIApplicationInvalidInterfaceOrientationException NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;
typedef NS_OPTIONS(NSUInteger, UIInterfaceOrientationMask) {
UIInterfaceOrientationMaskPortrait = (1 << UIInterfaceOrientationPortrait),
UIInterfaceOrientationMaskLandscapeLeft = (1 << UIInterfaceOrientationLandscapeLeft),
UIInterfaceOrientationMaskLandscapeRight = (1 << UIInterfaceOrientationLandscapeRight),
UIInterfaceOrientationMaskPortraitUpsideDown = (1 << UIInterfaceOrientationPortraitUpsideDown),
UIInterfaceOrientationMaskLandscape = (UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight),
UIInterfaceOrientationMaskAll = (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight | UIInterfaceOrientationMaskPortraitUpsideDown),
UIInterfaceOrientationMaskAllButUpsideDown = (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight),
} __TVOS_PROHIBITED;
1、根控制是UIViewController
::直接在控制器中重写下面的方法,设置是否支持自动旋转,以及支持的方向即可
/** 是否允许自动旋转 */
-(BOOL)shouldAutorotate
{
return NO;
}
/** 支持的方向 */
#if __IPHONE_OS_VERSION_MAX_ALLOWED < __IPHONE_9_0
- (NSUInteger)supportedInterfaceOrientations
#else
- (UIInterfaceOrientationMask)supportedInterfaceOrientations
#endif
{
return UIInterfaceOrientationMaskPortrait;
}
2、根控制是UINavigationController
::在根控制器下面写
-(BOOL)shouldAutorotate
{
if ([[self.viewControllers lastObject] isKindOfClass:["指定哪个控制器" class]]) {
return YES;
}
return NO;
}
#if __IPHONE_OS_VERSION_MAX_ALLOWED < __IPHONE_9_0
- (NSUInteger)supportedInterfaceOrientations
#else
- (UIInterfaceOrientationMask)supportedInterfaceOrientations
#endif
{
if ([[self.viewControllers lastObject]isKindOfClass:["指定哪个控制器" class]]) {
return UIInterfaceOrientationMaskLandscapeRight;
}
return UIInterfaceOrientationMaskPortrait;
}
3、根控制是UITabBarController
::在根控制器下面写
1、在此使用通知，需要先定义一个全局的BOOL
@interface CustomTabBarController : UITabBarController
{
BOOL _shouldAutorotate;
}
@end
2、在注册通知
@implementation CustomTabBarController
- (void)viewDidLoad {
[super viewDidLoad];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(autorotateInterface:) name:@"InterfaceOrientationNotificationKey" object:nil];
}
- (void)autorotateInterface:(NSNotification *)notifition
{
_shouldAutorotate = [notifition.object boolValue];
}
3、重写方法
/**
*
* @return 是否支持旋转
*/
-(BOOL)shouldAutorotate
{
return _shouldAutorotate;
}
/**
* 适配旋转的类型
*/
#if __IPHONE_OS_VERSION_MAX_ALLOWED < __IPHONE_9_0
- (NSUInteger)supportedInterfaceOrientations
#else
- (UIInterfaceOrientationMask)supportedInterfaceOrientations
#endif
{
if (_shouldAutorotate) {
return UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeRight;
}
return UIInterfaceOrientationMaskPortrait;
}
@end
4、需要在哪个页面进行旋转，则在那个页面的需要发出通知
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[UserDefaultNotificationCenter postNotificationName:@"InterfaceOrientationNotificationKey" object:@"1"];
}
-(void)viewWillDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
[UserDefaultNotificationCenter postNotificationName:@"InterfaceOrientationNotificationKey" object:@"0"];
}
注意：：不同的根控制不能混用，如果你的根控制器是TabbarVC，使用了navVC的控制方法会出现当前页面有效，返回后的页面就不受控制的问题。
2、状态栏控制
需要特别注意::
info.plist文件中，View controller-based status bar appearance项设为YES，则View controller对status bar的设置优先级高于application的设置。
View controller-based status bar appearance项设为NO，则以application的设置为准，view controller的prefersStatusBarHidden方法无效，是根本不会被调用的。
使用场景为一个playerVC控制器，加载playerV的控制功能来使用，并且playerV的控制结果要提现在playerVC上面。
@interface PlayerViewController : BaseViewController
/** 是否隐藏状态栏 */
- (void)whetherHidenStateBar:(BOOL)isHidenStateBar;
@end
@interface PlayerView : UIView
/** */
@property (nonatomic, weak) PlayerViewController *playerVC;
@end
// 在控制器中使用playerV的时候，传递playerVC给PlayerView
- (void)setupPlayerView
{
self.playerView = [[PlayerView alloc] init];
self.playerView.playerVC = self;
[self.view addSubView:self.playerView];
}
// 需要在控制器中才能使用，控制状态栏的隐藏和显示
- (BOOL)prefersStatusBarHidden
{
return self.isHidenStateBar;
}
- (void)whetherHidenStateBar:(BOOL)isHidenStateBar
{
self.isHidenStateBar = isHidenStateBar;
// 主动调用也有效果
[self prefersStatusBarHidden];
// 横屏的时候不写这个会有点问题，测试的时候你也会发现
[UIApplication sharedApplication].statusBarHidden = isHidenStateBar;
}
// 在playerView中需要使用到的地方调用
[self.playerVC whetherHidenStateBar:YES];或者[self.playerVC whetherHidenStateBar:NO];
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