在尝试为ios构建Google Cardboard演示项目时，它无法引用编译器错误

Question

我没有对示例项目进行任何更改。我正在运行Unity 5.0.2f1。当我尝试为Google Cardboard for ios构建演示项目时，它表示无法构建，因为脚本存在编译器错误。它显示了两个编译器错误：

Assets/Cardboard/Editor/CardboardEditor.cs(128,42):error CS0117: 'UnityEditor.PlayerSettings' does not contain a definition for 'GetGraphicsAPIs'

和

Assets/Cardboard/Editor/CardboardEditor.cs(130,5): error CS1579: foreach statement cannot operate on variables of type 'object' because it does not contain a definition for 'GetEnumerator' or is not accessible

我认为解决第一个错误将解决第二个错误。抛出错误的代码如下所示：

private static void CheckGraphicsAPI() {
#if UNITY_IOS
#if UNITY_5 || UNITY_4_6 && !UNITY_4_6_1 && !UNITY_4_6_2
#if UNITY_5
    var iOSBuildTarget = BuildTarget.iOS;
    var iOSGraphicsAPIs = PlayerSettings.GetGraphicsAPIs(BuildTarget.iOS);
    bool isOpenGL = true;
    foreach (var device in iOSGraphicsAPIs) {
      isOpenGL &= (device == GraphicsDeviceType.OpenGLES2 || device == GraphicsDeviceType.OpenGLES3);
    }
#else
    var iOSBuildTarget = BuildTarget.iPhone;
    bool isOpenGL = PlayerSettings.targetIOSGraphics == TargetIOSGraphics.OpenGLES_2_0
    || PlayerSettings.targetIOSGraphics == TargetIOSGraphics.OpenGLES_3_0;
#endif  // UNITY_5
    if (EditorUserBuildSettings.activeBuildTarget == iOSBuildTarget
        && !Application.isPlaying
        && Object.FindObjectOfType<Cardboard>() != null
        && !isOpenGL) {
      Debug.LogWarning("iOS Graphics API should be set to OpenGL for best " +
        "distortion-correction performance in Cardboard.");
    }
#endif  // UNITY_5 || UNITY_4_6 && !UNITY_4_6_1 && !UNITY_4_6_2
#endif  // UNITY_IOS
  }
}