问题描述

ios转屏问题，某个界面需要支持转屏

我们在appdelegate 里面用代码把屏幕转向禁止

• (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window { return UIInterfaceOrientationMaskPortrait; } 现在想要某一个界面支持转屏后横屏（UIInterfaceOrientationMaskPortrait不能改，其他界面要求竖屏）我需要怎么做 求大神指导

解决方案

//Appdelegate.h
@property(nonatomicassign)BOOL Orientations;
//Appdelegate.m

• (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{if(Orientations){ return UIInterfaceOrientationMaskAllButUpsideDown;}return UIInterfaceOrientationMaskPortrait;

}

//要旋转的页面中
UIDevice *device = [UIDevice currentDevice]; //Get the device object
[device beginGeneratingDeviceOrientationNotifications]; //Tell it to start monitoring the accelerometer for orientation
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter]; //Get the notification centre for the app
[nc addObserver:self selector:@selector(orientationChanged:) name:UIDeviceOrientationDidChangeNotification object:device];

AppDelegate *delegate=[[UIApplication sharedApplication]delegate];
delegate.Orientations=YES;

• (void)orientationChanged:(NSNotification *)note {
  UIDeviceOrientation o = [[UIDevice currentDevice] orientation];

  switch (o) {
  case UIDeviceOrientationPortrait: // Device oriented vertically home button on the bottom

      break;case UIDeviceOrientationPortraitUpsideDown:  // Device oriented vertically home button on the top    break;case UIDeviceOrientationLandscapeLeft:      // Device oriented horizontally home button on the right    [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight animated:YES];    break;case UIDeviceOrientationLandscapeRight:      // Device oriented horizontally home button on the left    [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeLeft animated:YES];    break;default:    break;

  }
  }

• (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
  {
  // 操作
  return YES; // YES为允许横屏，否则不允许横屏
  }

希望对你有帮助。

解决方案二：
快来人哦，在线等呢。。。。。

解决方案三：
帮帮忙，不要沉。。啊

解决方案四：

• (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
  {
  if (self.allowRotation) {
  return UIInterfaceOrientationMaskAll;
  }

  return UIInterfaceOrientationMaskPortrait;

}
在appDelegate 定义一个bool的属性来控制特定页面是否可以旋转

解决方案五：
给你一个建议 参照优酷播放器那种，使用仿射变换将界面转90度，然后自适应屏幕就行了，这是手动的，最好的方法