首先说一下为什么用陀螺仪，很多时候当ios设备系统级别锁定方向后，我们使用ios系统的设备方向方法将不能其作用。 ios系统代码中为一下代码：

//下面代码只有在设备系统不锁定屏幕旋转是Natifications 方法才起作用。

- (void) addDeviceRotateObserver {

[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(rotateViews:)

name:UIDeviceOrientationDidChangeNotification

object:nil];

}

- (void) rotateViews:(NSObject *)sender {

UIDevice* device = [sender valueForKey:@"object"];

NSLog(@"%d",device.orientation);

// switch (device.orientation) {

// case UIDeviceOrientationPortrait: {

// NSLog(@"P");

// break;

// }

// case UIDeviceOrientationLandscapeLeft: {

// NSLog(@"LL");

// break;

// }

// case UIDeviceOrientationLandscapeRight: {

// NSLog(@"LR");

// break;

// }

// default:

// break;

// }

switch (device.orientation) {

case UIDeviceOrientationUnknown: {

// do something

break;

}

case UIDeviceOrientationPortrait: {

// do something

break;

}

case UIDeviceOrientationPortraitUpsideDown: {

// do something

break;

}

case UIDeviceOrientationLandscapeLeft: {

// do something

break;

}

case UIDeviceOrientationLandscapeRight: {

// do something

break;

}

case UIDeviceOrientationFaceUp: {

// do something

break;

}

case UIDeviceOrientationFaceDown: {

// do something

break;

}

}

}

以下为陀螺仪代码，直接在unity中使用

void CheckOrientation()

{

if (Mathf.Abs(Input.gyro.gravity.z) <= 0.9f)

{

if (Mathf.Abs(Input.gyro.gravity.x) > Mathf.Abs(Input.gyro.gravity.y))

{

if (Input.gyro.gravity.x > 0f)

{

unknown = DeviceOrientation.LandscapeRight;

Rotation.z);

Debug.Log("DeviceOrientation111=="+Input.deviceOrientation);

}

else

{

unknown = DeviceOrientation.LandscapeLeft;

Rotation.z);

Debug.Log("DeviceOrientation222=="+Input.deviceOrientation);

}

}

else if (Input.gyro.gravity.y > 0f)

{

unknown = DeviceOrientation.PortraitUpsideDown;

Debug.Log("DeviceOrientation4444=="+Input.deviceOrientation);

}

else

{

unknown = DeviceOrientation.Portrait;

Debug.Log("DeviceOrientation3333=="+Input.deviceOrientation);

}

currentDeviceOrientation = unknown;

}

}

}