iOS 横竖屏切换

1、AppDelegate中设置横竖屏开关

.h中

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

@property(nonatomic, assign) BOOL allowRotation;///允许自由转动屏幕

@property(nonatomic, assign) BOOL allowLandscape;///只允许横屏@end

.m中

- (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window { 

if (self.allowRotation == 1) { 

      return UIInterfaceOrientationMaskAll;   

}    if (self.allowLandscape == 1) {       

return UIInterfaceOrientationMaskLandscape;   

}    return (UIInterfaceOrientationMaskPortrait);

}

2、相关运用

//允许横屏

AppDelegate *delegate = (AppDelegate *)[UIApplication sharedApplication].delegate; delegate.allowLandscape = YES;

//强制横屏

NSNumber *resetOrientationTarget = [NSNumber numberWithInt:UIInterfaceOrientationUnknown]; [[UIDevice currentDevice] setValue:resetOrientationTarget forKey:@"orientation"];

NSNumber *orientationTarget = [NSNumber numberWithInt:UIInterfaceOrientationLandscapeRight]; [[UIDevice currentDevice] setValue:orientationTarget forKey:@"orientation"];

3、界面返回时记得关闭横屏显示

AppDelegate *delegate = (AppDelegate *)[UIApplication sharedApplication].delegate; delegate.allowLandscape = NO;

//返回时强制竖屏

NSNumber *reSetOrientationTarget = [NSNumber numberWithInt:UIInterfaceOrientationUnknown]; [[UIDevice currentDevice] setValue:reSetOrientationTarget forKey:@"orientation"];

NSNumber *orientationTarget = [NSNumber numberWithInt:UIInterfaceOrientationPortrait]; [[UIDevice currentDevice] setValue:orientationTarget forKey:@"orientation"];

4、横竖屏代理(适配屏幕设置)

#pragma mark ------------切换横竖屏后位置更新

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator{

[super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];

WWWeakSelf

[coordinator animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext> _Nonnull context) {

///横屏后的界面frame：

CGSize screen = [UIScreen mainScreen].bounds.size;

UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation; 

///width > height 则表示横屏显示

if (screen.width > screen.height) {

///相关处理

///  if (orientation == UIInterfaceOrientationLandscapeLeft) ///表示向左的横屏

}

} completion:^(id<UIViewControllerTransitionCoordinatorContext> _Nonnull context) { }];}

别忘了设置允许APP横竖屏哟

这样  横竖屏相关设置基本就完啦   关灯 下班~~~~~~~~~