ページ「カテゴリ:MonoGame」と「MonoGameで外部のXNBファイルを読み込む」の間の差分

using System;
using System.IO;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Content;

public class ExternalContentManager : Microsoft.Xna.Framework.Content.ContentManager
{
    public ExternalContentManager(IServiceProvider serviceProvider, string rootDirectory)
        : base(serviceProvider, rootDirectory)
    {
    }

    public ExternalContentManager(IServiceProvider serviceProvider)
        : base(serviceProvider)
    {
    }

    protected override Stream OpenStream(string assetName)
    {
        string assetPath;
        if (Path.GetExtension(assetName) != "xnb")
        {
            assetPath = assetName + ".xnb";
        }
        else
        {
            assetPath = assetName;
        }
        return OpenRead(assetPath);
    }

    public Stream OpenRead(string fileName)
    {
        Stream stream = null;
        string path;

        try
        {
            if (Path.IsPathRooted(fileName))
            {
                path = fileName;
            }
            else
            {
                path = Path.Combine(RootDirectory, fileName);
            }

            // This is primarily for editor support. 
            // Setting the RootDirectory to an absolute path is useful in editor
            // situations, but TitleContainer can ONLY be passed relative paths.                
            stream = File.OpenRead(path);                

            // Read the asset into memory in one go. This results in a ~50% reduction
            // in load times on Android due to slow Android asset streams.
            var memStream = new MemoryStream();
            stream.CopyTo(memStream);
            memStream.Seek(0, SeekOrigin.Begin);
            stream.Close();
            stream = memStream;
        }
        catch (FileNotFoundException fileNotFound)
        {
            throw new ContentLoadException("The content file was not found.", fileNotFound);
        }
        catch (DirectoryNotFoundException directoryNotFound)
        {
            throw new ContentLoadException("The directory was not found.", directoryNotFound);
        }
        catch (Exception exception)
        {
            throw new ContentLoadException("Opening stream error.", exception);
        }
        return stream;
    }
}

// Androidであれば「/data/data/アプリID/files」あたりが返ってくるはず。
var path = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal);
var cm = new ExternalContentManager(this.Content.ServiceProvider, path);
var font = cm.Load<SpriteFont>("IPA-Gothic");