04_Unity3D的输入（Input）——移动设备方向

Input也可以获取当前移动设备的方向，不过只能获取不能使用Input修改，因为Input.deviceOrientation  属性为只读的。Unity在DeviceOrientation枚举中定义了7种方向，如下所示

Variables

Unknown	The orientation of the device cannot be determined.
Portrait	The device is in portrait mode, with the device held upright and the home button at the bottom.
PortraitUpsideDown	The device is in portrait mode but upside down, with the device held upright and the home button at the top.
LandscapeLeft	The device is in landscape mode, with the device held upright and the home button on the right side.
LandscapeRight	The device is in landscape mode, with the device held upright and the home button on the left side.
FaceUp	The device is held parallel to the ground with the screen facing upwards.
FaceDown	The device is held parallel to the ground with the screen facing downwards.

大家可以使用如下脚本测试一下：

public class mono5 : MonoBehaviour {
     void OnGUI(){
          switch(Input.deviceOrientation){
               case DeviceOrientation.FaceDown:
                    GUI.Label(new Rect(100,100,100,100),"FaceDown");
                    break;
               case DeviceOrientation.FaceUp:
                    GUI.Label(new Rect(100,100,100,100),"FaceUp");
                    break;
               case DeviceOrientation.LandscapeLeft:
                    GUI.Label(new Rect(100,100,100,100),"LandscapeLeft");
                    break;
               case DeviceOrientation.LandscapeRight:
                    GUI.Label(new Rect(100,100,100,100),"LandscapeRight");
                    break;
               case DeviceOrientation.Portrait:
                    GUI.Label(new Rect(100,100,100,100),"Portrait");
                    break;
               case DeviceOrientation.PortraitUpsideDown:
                    GUI.Label(new Rect(100,100,100,100),"PortraitUpsideDown");
                    break;
               case DeviceOrientation.Unknown:
                    GUI.Label(new Rect(100,100,100,100),"Unknown");
                    break;
          }
    }
}

图示：

Portrait	PortraitUpsideDown	LandscapeLeft	LandscapeRight

FaceUp： 手机面朝天空；

FaceDown： 手机面朝地面；

Unknown：当前方向非以上七种 或者 无法获取设备方向。