LibGDX

Question

我有一个模型在本地存储 (/data/user/0/com.myapp/files/model.g3db)。我想将此模型加载到我的 AssetManager 中以供以后使用。如果使用像 assetManager.load("model.obj", Model.class); 这样的标准方法，它会从作为项目一部分的 assets 文件夹中获取一个文件。它不适合我。所以，我尝试使用AssetDescriptor来指定文件：

FileHandle fh = Gdx.files.local("model.g3db");
if(fh.exists()) Gdx.app.log("file", "exists");
else Gdx.app.log("file", "not exists");

AssetDescriptor<Model> ad = new AssetDescriptor<Model>(fh, Model.class);
assets.load(ad);

输出：

I/file: exists

Caused by: com.badlogic.gdx.utils.GdxRuntimeException: Couldn't load dependencies of asset: model.g3db
                  at com.badlogic.gdx.assets.AssetLoadingTask.handleAsyncLoader(AssetLoadingTask.java:121)
                  at com.badlogic.gdx.assets.AssetLoadingTask.update(AssetLoadingTask.java:90)
                  at com.badlogic.gdx.assets.AssetManager.updateTask(AssetManager.java:507)
                  at com.badlogic.gdx.assets.AssetManager.update(AssetManager.java:381)
                  at com.myapp.EngineCore.render(EngineCore.java:226) 
                  at com.badlogic.gdx.backends.android.AndroidGraphicsLiveWallpaper.onDrawFrame(AndroidGraphicsLiveWallpaper.java:220) 
                  at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1571) 
                  at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1270) 
               Caused by: com.badlogic.gdx.utils.GdxRuntimeException: com.badlogic.gdx.utils.SerializationException: Error parsing file: model.g3db
                  at com.badlogic.gdx.utils.async.AsyncResult.get(AsyncResult.java:46)
                  at com.badlogic.gdx.assets.AssetLoadingTask.handleAsyncLoader(AssetLoadingTask.java:119)
                  at com.badlogic.gdx.assets.AssetLoadingTask.update(AssetLoadingTask.java:90) 
                  at com.badlogic.gdx.assets.AssetManager.updateTask(AssetManager.java:507) 
                  at com.badlogic.gdx.assets.AssetManager.update(AssetManager.java:381) 
                  at com.nolesh.android.livewallpapers.iamrich.EngineCore.render(EngineCore.java:226) 
                  at com.badlogic.gdx.backends.android.AndroidGraphicsLiveWallpaper.onDrawFrame(AndroidGraphicsLiveWallpaper.java:220) 
                  at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1571) 
                  at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1270) 
               Caused by: com.badlogic.gdx.utils.SerializationException: Error parsing file: model.g3db
                  at com.badlogic.gdx.utils.UBJsonReader.parse(UBJsonReader.java:56)
                  at com.badlogic.gdx.graphics.g3d.loader.G3dModelLoader.parseModel(G3dModelLoader.java:65)
                  at com.badlogic.gdx.graphics.g3d.loader.G3dModelLoader.loadModelData(G3dModelLoader.java:61)
                  at com.badlogic.gdx.assets.loaders.ModelLoader.getDependencies(ModelLoader.java:75)
                  at com.badlogic.gdx.assets.loaders.ModelLoader.getDependencies(ModelLoader.java:35)
                  at com.badlogic.gdx.assets.AssetLoadingTask.call(AssetLoadingTask.java:64)
                  at com.badlogic.gdx.assets.AssetLoadingTask.call(AssetLoadingTask.java:34)
                  at com.badlogic.gdx.utils.async.AsyncExecutor.call(AsyncExecutor.java:58)
                  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
                  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
                  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
                  at java.lang.Thread.run(Thread.java:764)
               Caused by: com.badlogic.gdx.utils.GdxRuntimeException: Error reading file: model.g3db (Internal)
                  at com.badlogic.gdx.backends.android.AndroidFileHandle.read(AndroidFileHandle.java:77)
                  at com.badlogic.gdx.files.FileHandle.read(FileHandle.java:151)
                  at com.badlogic.gdx.utils.UBJsonReader.parse(UBJsonReader.java:54)
                  at com.badlogic.gdx.graphics.g3d.loader.G3dModelLoader.parseModel(G3dModelLoader.java:65) 
                  at com.badlogic.gdx.graphics.g3d.loader.G3dModelLoader.loadModelData(G3dModelLoader.java:61) 
                  at com.badlogic.gdx.assets.loaders.ModelLoader.getDependencies(ModelLoader.java:75) 
                  at com.badlogic.gdx.assets.loaders.ModelLoader.getDependencies(ModelLoader.java:35) 
                  at com.badlogic.gdx.assets.AssetLoadingTask.call(AssetLoadingTask.java:64) 
                  at com.badlogic.gdx.assets.AssetLoadingTask.call(AssetLoadingTask.java:34) 
                  at com.badlogic.gdx.utils.async.AsyncExecutor.call(AsyncExecutor.java:58) 
                  at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
                  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) 
                  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) 
                  at java.lang.Thread.run(Thread.java:764) 
               Caused by: java.io.FileNotFoundException: model.g3db
                  at android.content.res.AssetManager.openAsset(Native Method)
                  at android.content.res.AssetManager.open(AssetManager.java:374)
                  at android.content.res.AssetManager.open(AssetManager.java:348)
                  at com.badlogic.gdx.backends.android.AndroidFileHandle.read(AndroidFileHandle.java:75)
                  at com.badlogic.gdx.files.FileHandle.read(FileHandle.java:151) 
                  at com.badlogic.gdx.utils.UBJsonReader.parse(UBJsonReader.java:54) 
                  at com.badlogic.gdx.graphics.g3d.loader.G3dModelLoader.parseModel(G3dModelLoader.java:65) 
                  at com.badlogic.gdx.graphics.g3d.loader.G3dModelLoader.loadModelData(G3dModelLoader.java:61) 
                  at com.badlogic.gdx.assets.loaders.ModelLoader.getDependencies(ModelLoader.java:75) 
                  at com.badlogic.gdx.assets.loaders.ModelLoader.getDependencies(ModelLoader.java:35) 
                  at com.badlogic.gdx.assets.AssetLoadingTask.call(AssetLoadingTask.java:64) 
                  at com.badlogic.gdx.assets.AssetLoadingTask.call(AssetLoadingTask.java:34) 
                  at com.badlogic.gdx.utils.async.AsyncExecutor.call(AsyncExecutor.java:58) 
                  at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
                  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) 
                  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) 
                  at java.lang.Thread.run(Thread.java:764)

当我将此模型移动到项目的 assets 文件夹时，它成功加载。

所以，我的问题是如何将模型从本地存储加载到 AssetManager。

Answer 1

这不是一个完美的解决方案，但它确实有效。 AssetManager 有一个接受 FileHandleResolver 作为参数的构造函数。

AssetManager assets = new AssetManager(new LocalFileHandleResolver());

这不是一个理想的解决方案，因为如果您要使用本地存储和内部存储的混合资产，则需要为每个创建 AssetManager。

LibGDX - 从本地存储加载 AssetManager 中的文件

LibGDX - load file in AssetManager from local storage

android

android-assets