導(dǎo)入 ：

#import <CoreMotion/CoreMotion.h>

增加屬性：

@property (strong, nonatomic) CMMotionManager *motionManager;
@property (assign, nonatomic) BOOL isLandScape;

初始化：

self.isLandScape = NO;
[self initMotionManager];

在真機(jī)關(guān)閉屏幕旋轉(zhuǎn)功能時(shí)如何去判斷屏幕方向：

-- (void)initMotionManager
{
    if (_motionManager == nil) 
    {
          _motionManager = [[CMMotionManager alloc] init];
    }
    // 提供設(shè)備運(yùn)動(dòng)數(shù)據(jù)到指定的時(shí)間間隔
    _motionManager.deviceMotionUpdateInterval = .3;
    //    _motionManager.accelerometerAvailable
    if (_motionManager.deviceMotionAvailable) 
    {  
            // 確定是否使用任何可用的態(tài)度參考幀來(lái)決定設(shè)備的運(yùn)動(dòng)是否可用
            // 啟動(dòng)設(shè)備的運(yùn)動(dòng)更新姿鸿，通過(guò)給定的隊(duì)列向給定的處理程序提供數(shù)據(jù)。
            [_motionManager startDeviceMotionUpdatesToQueue:[NSOperationQueue mainQueue] withHandler:^(CMDeviceMotion *motion, NSError *error) 
            {
                 if (self.wmPlayer && self.wmPlayer.superview)
                 {
                       [self performSelectorOnMainThread:@selector(handleDeviceMotion:) withObject:motion waitUntilDone:YES];
                  }
            }];
      }
      else
      {
            [self setMotionManager:nil];
      }
}

- (void)handleDeviceMotion:(CMDeviceMotion *)deviceMotion
{
      double x = deviceMotion.gravity.x;
      double y = deviceMotion.gravity.y;
      if (fabs(y) >= fabs(x))
      {  
            //NSLog(@"豎屏");
            if (self.isLandScape == YES) 
            {
                  [[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIDeviceOrientationLandscapeLeft] forKey:@"orientation"];
                  //這句話是防止手動(dòng)先把設(shè)備置為豎屏,導(dǎo)致下面的語(yǔ)句失效.
                  [[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIDeviceOrientationPortrait] forKey:@"orientation"];
                  self.isLandScape = NO;
                  [self toCell];
             }
       }
       else
       {        
             //NSLog(@"橫屏");
             if (self.isLandScape == NO) 
             {
                  [[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIDeviceOrientationPortrait] forKey:@"orientation"];
                  // 這句話是防止手動(dòng)先把設(shè)備置為橫屏,導(dǎo)致下面的語(yǔ)句失效.
                  if(x > 0)
                  {
                        // 左邊在上
                        [[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIDeviceOrientationLandscapeRight] forKey:@"orientation"];
                        [self toFullScreenWithInterfaceOrientation:UIInterfaceOrientationLandscapeLeft];
                  }
                  else
                  {
                        // 右邊在上
                        [[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIDeviceOrientationLandscapeLeft] forKey:@"orientation"];
                        [self toFullScreenWithInterfaceOrientation:UIInterfaceOrientationLandscapeRight];
                  }
                  self.isLandScape = YES;
              }
        }
}

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