Unity Vuforia Xcode构建错误：“架构arm64的未定义符号”

Question

我目前正试图在Xcode中构建一个项目（以前工作过）。这是一个使用Vuforia插件的Unity项目，它完美地构建到了Android上。

在Xcode建设当我收到以下错误信息：

Undefined symbols for architecture arm64: 
    "_UnityRenderBufferMTLTexture", referenced from: 
     PlatformiOS::setRenderBuffers(void*) in libVuforiaUnityPlayer.a(PlatformiOS.o) 
    "_UnityCurrentMTLCommandEncoder", referenced from: 
     PlatformiOS::setRenderBuffers(void*) in libVuforiaUnityPlayer.a(PlatformiOS.o) 
ld: symbol(s) not found for architecture arm64 
clang: error: linker command failed with exit code 1 (use -v to see invocation) 

我已经包括Security.framework和SystemConfiguration.framework项目。

Unity 5.5.0f3; Vuforia SDK v5.5.9; XCode 8.2.1

Answer 1

我通过更新Unity项目中的Vuforia来解决了这个问题，但是在更新之前，我并未删除Plugins文件夹中的Vuforia文件。我以前尝试过对Vuforia进行适当的更新，但失败了。

所以步骤： 1 - 删除资产/ Vuforia

2 - 更新VuforiaCamera.cs（资产/脚本/ Vuforia），以下面的代码

3 - 导入最新Vuforia包

4 - 利润！

public class VuforiaCamera : MonoBehaviour 
{ 
    private bool mVuforiaStarted = false; 

    void Start() 
    { 
     VuforiaARController vuforia = VuforiaARController.Instance; 

     if (vuforia != null) 
      vuforia.RegisterVuforiaStartedCallback(StartAfterVuforia); 
    } 

    private void StartAfterVuforia() 
    { 
     mVuforiaStarted = true; 
     SetAutofocus(); 
    } 

    void OnApplicationPause(bool pause) 
    { 
     if (!pause) 
     { 
      // App resumed 
      if (mVuforiaStarted) 
      { 
       // App resumed and vuforia already started 
       // but lets start it again... 
       SetAutofocus(); // This is done because some android devices lose the auto focus after resume 
       // this was a bug in vuforia 4 and 5. I haven't checked 6, but the code is harmless anyway 
      } 
     } 
    } 

    private void SetAutofocus() 
    { 
     if (CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO)) 
     { 
      Debug.Log("Autofocus set"); 
     } 
     else 
     { 
      // never actually seen a device that doesn't support this, but just in case 
      Debug.Log("this device doesn't support auto focus"); 
     } 
    } 
}