iOS 让APP支持横竖屏

发布于:2024-05-13 ⋅ 阅读:(182) ⋅ 点赞:(0)
代码示例
  • Appdelegate添加属性(在Appdelegate.m中添加该属性)

      /** 是否允许横屏属性*/  
      @property (nonatomic,assign)BOOL isAllowRotation; 
    
  • 设置可以支持的方向(在AppDelegate.m中添加)

      - (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(nullable UIWindow *)window{
          if (self.isAllowRotation) {
              return UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight;
          }
          return UIInterfaceOrientationMaskPortrait;
      }
    
  • 设置控制横竖屏打开关闭的方法(在AppDelegate.m中添加)

      /** 允许横屏*/  
      - (void)setCanAllowRotation{  
          self.isAllowRotation =YES;  
      }  
    
      /** 禁止横屏*/  
      - (void)setCanNotAllowRotation{  
          self.isAllowRotation =NO;  
      }  
    
  • 在AppDelegate.h中声明两个方法

      /** 支持横屏接口,需要在view消失时设置为不支持,否则其他页面也会支持横屏*/  
      - (void)setCanAllowRotation;  
      /** 不支持横屏接口*/  
      - (void)setCanNotAllowRotation;  
    
  • 在pch文件中添加这部分代码

      /**  获得appdelegate*/  
      #define APPDELEGATE (AppDelegate *)[[UIApplication sharedApplication] delegate]  
    
      //不支持横屏  
      #define CANNOTSCALE AppDelegate * appDelegate = APPDELEGATE;[appDelegate setCanNotAllowRotation];  
      //支持横屏  
      #define CANSCALE AppDelegate * appDelegate = APPDELEGATE;[appDelegate setCanAllowRotation];  
    
代码说明
  • 需要在需要使用的viewController中的viewWillAppear中打开支持横竖屏,然后在viewWillDisAppear中关闭支持横竖屏,下面是调用展示

      - (void)viewWillAppear:(BOOL)animated{
          [super viewWillAppear:animated];
          CANSCALE
      }
    
      - (void)viewWillDisappear:(BOOL)animated{
          [super viewWillDisappear:animated];
          CANNOTSCALE
      }
    

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