iOS强制横屏或强制竖屏【转】
第一种解决方案(不推荐,直接跳过看第二种解决方案):
-,需求:
强制横竖屏,在某些情况下非常重要,在网上找了好多解决的方法,都没找到解决方法,请原谅我有点笨哈,不过经过了一段纠结的时光,终于解决了这个问题,会出现无法转屏的情况!!!
//强制转屏-(void)interfaceOrientation:(UIInterfaceOrientation)orientation{if([[UIDevice currentDevice]respondsToSelector:@selector(setOrientation:)]){SEL selector=NSSelectorFromString(@"setOrientation:");NSInvocation*invocation=[NSInvocation invocationWithMethodSignature:[UIDevice instanceMethodSignatureForSelector:selector]];[invocation setSelector:selector];[invocation setTarget:[UIDevice currentDevice]];intval=orientation;// 从2开始是因为0 1 两个参数已经被selector和target占用[invocation setArgument:&val atIndex:2];[invocation invoke];}}
强制横屏:
[selfinterfaceOrientation:UIInterfaceOrientationLandscapeRight];
强制竖屏:
[selfinterfaceOrientation:UIInterfaceOrientationPortrait];
总算是解决了这个头疼的问题,哈哈哈---啊---duang
只在某一个界面提供转屏的解决方法如下AppDelegate.m下操作
-(UIInterfaceOrientationMask)application:(UIApplication*)application supportedInterfaceOrientationsForWindow:(UIWindow*)window{NSLog(@"0000000---------%@",NSStringFromClass([[selftopViewController]class]));if([NSStringFromClass([[selftopViewController]class])isEqualToString:@"想要提供转屏的控制器的名字"]){//横屏returnUIInterfaceOrientationMaskLandscapeRight;}//竖屏returnUIInterfaceOrientationMaskPortrait;}//获取界面最上层的控制器-(UIViewController*)topViewController{return[selftopViewControllerWithRootViewController:[UIApplication sharedApplication].keyWindow.rootViewController];}//一层一层的进行查找判断-(UIViewController*)topViewControllerWithRootViewController:(UIViewController*)rootViewController{if([rootViewController isKindOfClass:[UITabBarController class]]){UITabBarController*tabBarController=(UITabBarController*)rootViewController;return[selftopViewControllerWithRootViewController:tabBarController.selectedViewController];}elseif([rootViewController isKindOfClass:[UINavigationController class]]){UINavigationController*nav=(UINavigationController*)rootViewController;return[selftopViewControllerWithRootViewController:nav.visibleViewController];}elseif(rootViewController.presentedViewController){UIViewController*presentedViewController=rootViewController.presentedViewController;return[selftopViewControllerWithRootViewController:presentedViewController];}else{returnrootViewController;}}
2017.5.15更新:
在设置控制器的旋转屏的时候,我目前的应用中的处理方式:
因为在大部分的场景中,只有个别页面有横屏的情况,所以基本上都是竖屏,所以我在处理这两种情况的时候,优先选择使用系统提供的方法:
如果你的应用的根控制器是Nav就把下面这段代码放到Nav根控制器下,如果是TabVC放到TabVC的下面
-(BOOL)shouldAutorotate{returnYES;}-(UIInterfaceOrientationMask)supportedInterfaceOrientations{returnUIInterfaceOrientationMaskPortrait;}
然后在你想横屏的控制器加上这段代码,基本上横屏问题就可以搞定了,前提是你的这个控制器是moda出来的,如果是push的话就要使用上文提到的强制横竖屏的方法,下面这段代码是不起作用的
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation{return(toInterfaceOrientation==UIInterfaceOrientationLandscapeRight);}-(UIInterfaceOrientationMask)supportedInterfaceOrientations{returnUIInterfaceOrientationMaskLandscapeRight;}
第二种解决方案:
灵活设置横竖屏,不用区分Push还是Present,都是可以设置。
第一步:
在AppDelegate.h中添加旋转属性/**
* 是否允许转向
*/@property(nonatomic,assign)BOOL allowRotation;
在AppDelegate.m中添加转屏的代理方法-(UIInterfaceOrientationMask)application:(UIApplication*)application supportedInterfaceOrientationsForWindow:(nullable UIWindow*)window{if(self.allowRotation==YES){//横屏returnUIInterfaceOrientationMaskLandscape;}else{//竖屏returnUIInterfaceOrientationMaskPortrait;}}
第二步:
设置横竖屏的核心方法,我是直接把这个方法添加到了UIDevice的分类中,代码如下:
UIDevice+TFDevice.h :
#import@interfaceUIDevice(TFDevice)/**
* @interfaceOrientation 输入要强制转屏的方向
*/+(void)switchNewOrientation:(UIInterfaceOrientation)interfaceOrientation;@end
UIDevice+TFDevice.m :
#import"UIDevice+TFDevice.h"@implementationUIDevice(TFDevice)+(void)switchNewOrientation:(UIInterfaceOrientation)interfaceOrientation{NSNumber*resetOrientationTarget=[NSNumber numberWithInt:UIInterfaceOrientationUnknown];[[UIDevice currentDevice]setValue:resetOrientationTarget forKey:@"orientation"];NSNumber*orientationTarget=[NSNumber numberWithInt:interfaceOrientation];[[UIDevice currentDevice]setValue:orientationTarget forKey:@"orientation"];}@end
第三步:
在需要设置横屏的控制器的ViewDidLoad中添加下面代码:
-(void)viewDidLoad{[superviewDidLoad];AppDelegate*appDelegate=(AppDelegate*)[UIApplication sharedApplication].delegate;//允许转成横屏appDelegate.allowRotation=YES;//调用横屏代码[UIDevice switchNewOrientation:UIInterfaceOrientationLandscapeRight];}
第四步 (针对Push出的控制器来说):
需要注意的是push过去的时候变成横屏,pop出去的时候在设置竖屏,此时最好禁用系统的侧滑返回手势。
-(void)viewWillAppear:(BOOL)animated{[superviewWillAppear:animated];//禁用侧滑手势方法self.navigationController.interactivePopGestureRecognizer.enabled=NO;}-(void)viewWillDisappear:(BOOL)animated{[superviewWillDisappear:animated];//禁用侧滑手势方法self.navigationController.interactivePopGestureRecognizer.enabled=YES;}
第五步:
push控制器:
//点击导航栏返回按钮的时候调用,所以Push出的控制器最好禁用侧滑手势:AppDelegate*appDelegate=(AppDelegate*)[UIApplication sharedApplication].delegate;appDelegate.allowRotation=NO;//关闭横屏仅允许竖屏//切换到竖屏[UIDevice switchNewOrientation:UIInterfaceOrientationPortrait];[self.navigationController popViewControllerAnimated:YES];
present控制器:
AppDelegate*appDelegate=(AppDelegate*)[UIApplication sharedApplication].delegate;appDelegate.allowRotation=NO;//关闭横屏仅允许竖屏//切换到竖屏[UIDevice switchNewOrientation:UIInterfaceOrientationPortrait];[selfdismissViewControllerAnimated:YES completion:nil];
第六步:
Demo地址:https://github.com/aiyakuaile/PLTest
作者:木语先生
链接:https://www.jianshu.com/p/d6cb54d2eaa1
来源:简书
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