在Unity HoloLens项目中读取XML文件:在编辑器中工作，而不是在部署的项目中

Question

我正在尝试保存和加载一个自定义类"Animation"(四元数列表，一个用于ID的int和一个用于指示有多少游戏对象要制作动画的int(，保存部分在HoloLens上运行良好，但加载部分由于某种原因仅在PC上运行。在HoloLens上，它返回错误："XML文档(2，2(中有错误。">

我曾尝试对我的文件使用StreamingAssets而不是"persistentDataPath"，但在HoloLens上，我再次遇到一个错误，解释说对该文件的访问被拒绝。

我也尝试过使用TextReader和StreamReader加载"动画"，但结果完全相同。

我也尝试过使用StreamWriter编写"动画"，但结果也没有改变。

我加入了负责编写和加载XML文件的类的代码，以及"SaveAnimation"函数每次都成功编写的示例。

有什么想法吗？我确信问题出在如何编写XML文件上，但我似乎找不到解决方案。

保存/加载类的代码：

using System.IO;
using System.Xml.Serialization;
using UnityEngine;
public class AnimationSaverLoader : MonoBehaviour {
private string baseFilename = "animation";
private string path;
public bool SaveAnimation(Animation animation)
{
int animationID = animation.AnimationID;
path = Path.GetFullPath(Path.Combine(Application.persistentDataPath, baseFilename + animationID + ".xml"));
try
{
using (FileStream writer = new FileStream(path, FileMode.Create))
{
XmlSerializer serializer = new XmlSerializer(typeof(Animation));
serializer.Serialize(writer, animation);
}
return true;
}
catch (System.Exception e)
{
Debug.LogWarning("Error saving animation : " + e.Message);
return false;
}
}
public Animation LoadAnimation(int animationID)
{
path = Path.GetFullPath(Path.Combine(Application.persistentDataPath, baseFilename + animationID + ".xml"));
Animation deserialized = null;
try
{
using (FileStream reader = File.Open(path, FileMode.Open))
{
XmlSerializer serializer = new XmlSerializer(typeof(Animation));
deserialized = (Animation)serializer.Deserialize(reader);
}
}
catch (System.Exception e)
{
Debug.LogWarningFormat("Error loading animation : {0}", e.Message);
}
Debug.LogFormat("deserialized is null : {0}", deserialized == null);
return deserialized;
}

"SaveAnimation"函数的XML输出示例：

<?xml version="1.0" encoding="utf-8"?>
<Animation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<nbAnimatables>7</nbAnimatables>
<animationID>1</animationID>
<points>
<ArrayOfQuaternion>
<Quaternion>
<x>0</x>
<y>0</y>
<z>0</z>
<w>1</w>
<eulerAngles>
<x>-0</x>
<y>0</y>
<z>0</z>
</eulerAngles>
</Quaternion>
<Quaternion>
<x>0</x>
<y>0</y>
<z>0</z>
<w>1</w>
<eulerAngles>
<x>-0</x>
<y>0</y>
<z>0</z>
</eulerAngles>
</Quaternion>
<Quaternion>
<x>-0</x>
<y>-0</y>
<z>-0</z>
<w>1</w>
<eulerAngles>
<x>-0</x>
<y>0</y>
<z>0</z>
</eulerAngles>
</Quaternion>
<Quaternion>
<x>-0.229409814</x>
<y>0.0272422452</y>
<z>-0.114730783</z>
<w>0.966160357</w>
<eulerAngles>
<x>334.0847</x>
<y>6.722004</y>
<z>344.9074</z>
</eulerAngles>
</Quaternion>
<Quaternion>
<x>-0.0120867919</x>
<y>0.009940858</y>
<z>-0.0253626034</z>
<w>0.9995558</w>
<eulerAngles>
<x>358.644348</x>
<y>1.17417169</y>
<z>357.0791</z>
</eulerAngles>
</Quaternion>
<Quaternion>
<x>0.2436451</x>
<y>-0.03456776</y>
<z>0.0332907774</z>
<w>0.9686763</w>
<eulerAngles>
<x>28.3156128</x>
<y>356.695343</y>
<z>3.10282016</z>
</eulerAngles>
</Quaternion>
<Quaternion>
<x>-0.0274707</x>
<y>-0.004143617</y>
<z>0.0005820858</z>
<w>0.9996139</w>
<eulerAngles>
<x>356.852</x>
<y>359.5228</y>
<z>0.0798406</z>
</eulerAngles>
</Quaternion>
</ArrayOfQuaternion>
<ArrayOfQuaternion>
<Quaternion>
<x>-0</x>
<y>-0</y>
<z>0.5602086</z>
<w>0.8283516</w>
<eulerAngles>
<x>-0</x>
<y>-0</y>
<z>68.14045</z>
</eulerAngles>
</Quaternion>
<Quaternion>
<x>0</x>
<y>0</y>
<z>0</z>
<w>1</w>
<eulerAngles>
<x>-0</x>
<y>0</y>
<z>0</z>
</eulerAngles>
</Quaternion>
<Quaternion>
<x>-0</x>
<y>-0</y>
<z>-0</z>
<w>1</w>
<eulerAngles>
<x>-0</x>
<y>0</y>
<z>0</z>
</eulerAngles>
</Quaternion>
<Quaternion>
<x>-0.229409814</x>
<y>0.0272422452</y>
<z>-0.114730783</z>
<w>0.966160357</w>
<eulerAngles>
<x>334.0847</x>
<y>6.722004</y>
<z>344.9074</z>
</eulerAngles>
</Quaternion>
<Quaternion>
<x>-0.0120867919</x>
<y>0.009940858</y>
<z>-0.0253626034</z>
<w>0.9995558</w>
<eulerAngles>
<x>358.644348</x>
<y>1.17417169</y>
<z>357.0791</z>
</eulerAngles>
</Quaternion>
<Quaternion>
<x>0.243645117</x>
<y>-0.0345677622</y>
<z>0.03329078</z>
<w>0.9686764</w>
<eulerAngles>
<x>28.3156128</x>
<y>356.695343</y>
<z>3.10282016</z>
</eulerAngles>
</Quaternion>
<Quaternion>
<x>-0.0274707</x>
<y>-0.004143617</y>
<z>0.0005820858</z>
<w>0.9996139</w>
<eulerAngles>
<x>356.852</x>
<y>359.5228</y>
<z>0.0798406</z>
</eulerAngles>
</Quaternion>
</ArrayOfQuaternion>
</points>
</Animation>

编辑：认为"动画"类也会很有用。

using UnityEngine;
using System.Collections.Generic;
using System.Xml.Serialization;
[XmlRoot("Animation")]
public class Animation {
[XmlElement("nbAnimatables")]
public int NbAnimatables { get; set; }
[XmlElement("animationID")]
public int AnimationID { get; set; }
[XmlArray("points")]
public List<Quaternion[]> Points { get; private set; }
public Animation()
{
}
public Animation(int nbAnimatables, int animationID)
{
this.NbAnimatables = nbAnimatables;
this.AnimationID = animationID;
Points = new List<Quaternion[]>();
}
public bool AddPoint(Quaternion[] animatableRotations)
{
if (animatableRotations.Length == NbAnimatables)
{
Points.Add(animatableRotations);
return true;
}
return false;
}
public bool OverridePoint(Quaternion[] animatableRotations, int pointIndex)
{
if (pointIndex < Points.Count)
{
Points[pointIndex] = animatableRotations;
return true;
}
return false;
}
public bool RemovePoint(int pointIndex)
{
if (pointIndex < Points.Count)
{
Points.RemoveAt(pointIndex);
return true;
}
return false;
}
}

Answer 1

根据jdweng的建议，我决定更改文件的编写方式。我再次尝试了StreamWriter，由于某种原因，它成功了！我把第18行的代码改成了

using (StreamWriter writer = new StreamWriter(File.Create(path)))
{
XmlSerializer serializer = new XmlSerializer(typeof(Animation));
serializer.Serialize(writer, animation);
}

Answer 2

尝试以下操作：

XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
XmlWriter writer = XmlWriter.Create(path, settings);
XmlSerializer serializer = new XmlSerializer(typeof(Animation));
serializer.Serialize(writer, animation);

Answer 3

我会尝试使用StorageFile API:

Windows.Storage.StorageFolder storageFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
string fileName = baseFilename + animationID + ".xml");
Windows.Storage.StorageFile sampleFile = await storageFolder.CreateFileAsync(fileName,   Windows.Storage.CreationCollisionOption.ReplaceExisting);
using (var stream = await sampleFile.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite);)
{
using (var outputStream = stream.GetOutputStreamAt(0))
{
XmlSerializer serializer = new XmlSerializer(typeof(Animation));
serializer.Serialize(stream, animation);
await outputStream.FlushAsync();
}
}

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