AndEngine 加载图形：我将资产文件夹和资源放在哪里？答案

【问题标题】：AndEngine Loading Graphics: Where Do I put my assets folder and my resources?AndEngine 加载图形：我将资产文件夹和资源放在哪里？
【发布时间】：2015-03-16 08:46:24
【问题描述】：

在使用 AndEngine 和 Android Studio 创建游戏时，我将资产文件夹放在项目的根目录。我还在它下面创建了一个名为 gfx 的文件夹并将我的 splash.png 放在那里。

当我调用启动画面时：

 public void loadSplashScreen()
{
    BitmapTextureAtlasTextureRegionFactory.setAssetBasePath("gfx/");
    splashTextureAtlas = new BitmapTextureAtlas(activity.getTextureManager(), 390, 534, TextureOptions.BILINEAR);
    splash_region = BitmapTextureAtlasTextureRegionFactory.createFromAsset(splashTextureAtlas, activity, "splash.png", 0, 0);
    splashTextureAtlas.load();
}

这是产生的错误

我是不是把东西放错地方了？资产应该在哪里？

     E/AndEngine﹕ Failed loading Bitmap in AssetBitmapTextureAtlasSource. AssetPath: gfx/splash.png
    java.io.FileNotFoundException: gfx/splash.png
            at android.content.res.AssetManager.openAsset(Native Method)
            at android.content.res.AssetManager.open(AssetManager.java:316)
            at android.content.res.AssetManager.open(AssetManager.java:290)
            at org.andengine.opengl.texture.atlas.bitmap.source.AssetBitmapTextureAtlasSource.create(AssetBitmapTextureAtlasSource.java:52)
            at org.andengine.opengl.texture.atlas.bitmap.source.AssetBitmapTextureAtlasSource.create(AssetBitmapTextureAtlasSource.java:43)
            at org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlasTextureRegionFactory.createFromAsset(BitmapTextureAtlasTextureRegionFactory.java:86)
            at org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlasTextureRegionFactory.createFromAsset(BitmapTextureAtlasTextureRegionFactory.java:82)
            at com.waylonhuang.game.ResourcesManager.loadSplashScreen(ResourcesManager.java:68)
            at com.waylonhuang.game.SceneManager.createSplashScene(SceneManager.java:93)
            at com.waylonhuang.game.GameActivity.onCreateScene(GameActivity.java:62)
            at org.andengine.ui.activity.BaseGameActivity$3.onCreateResourcesFinished(BaseGameActivity.java:171)
            at com.waylonhuang.game.GameActivity.onCreateResources(GameActivity.java:45)
            at org.andengine.ui.activity.BaseGameActivity.onCreateGame(BaseGameActivity.java:183)
            at org.andengine.ui.activity.BaseGameActivity.onSurfaceCreated(BaseGameActivity.java:112)
            at org.andengine.opengl.view.EngineRenderer.onSurfaceCreated(EngineRenderer.java:80)
            at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1501)
            at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)
01-17 16:48:21.329  30718-30749/com.waylonhuang.game E/AndEngine﹕ Failed loading Bitmap in AssetBitmapTextureAtlasSource. AssetPath: gfx/splash.png
    java.io.FileNotFoundException: gfx/splash.png
            at android.content.res.AssetManager.openAsset(Native Method)
            at android.content.res.AssetManager.open(AssetManager.java:316)
            at android.content.res.AssetManager.open(AssetManager.java:290)
            at org.andengine.opengl.texture.atlas.bitmap.source.AssetBitmapTextureAtlasSource.onLoadBitmap(AssetBitmapTextureAtlasSource.java:101)
            at org.andengine.opengl.texture.atlas.bitmap.source.AssetBitmapTextureAtlasSource.onLoadBitmap(AssetBitmapTextureAtlasSource.java:85)
            at org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlas.writeTextureToHardware(BitmapTextureAtlas.java:154)
            at org.andengine.opengl.texture.Texture.loadToHardware(Texture.java:145)
            at org.andengine.opengl.texture.TextureManager.updateTextures(TextureManager.java:268)
            at org.andengine.engine.Engine.onDrawFrame(Engine.java:633)
            at org.andengine.opengl.view.EngineRenderer.onDrawFrame(EngineRenderer.java:105)
            at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1523)
            at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)
01-17 16:48:21.348  30718-30749/com.waylonhuang.game W/dalvikvm﹕ threadid=15: thread exiting with uncaught exception (group=0x41717d40)
01-17 16:48:21.349  30718-30749/com.waylonhuang.game E/AndroidRuntime﹕ FATAL EXCEPTION: GLThread 6799
    Process: com.waylonhuang.game, PID: 30718
    org.andengine.util.exception.NullBitmapException: Caused by: class org.andengine.opengl.texture.atlas.bitmap.source.AssetBitmapTextureAtlasSource --> AssetBitmapTextureAtlasSource(gfx/splash.png) returned a null Bitmap.
            at org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlas.writeTextureToHardware(BitmapTextureAtlas.java:156)
            at org.andengine.opengl.texture.Texture.loadToHardware(Texture.java:145)
            at org.andengine.opengl.texture.TextureManager.updateTextures(TextureManager.java:268)
            at org.andengine.engine.Engine.onDrawFrame(Engine.java:633)
            at org.andengine.opengl.view.EngineRenderer.onDrawFrame(EngineRenderer.java:105)
            at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1523)
            at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)
01-17 16:48:23.282  30718-30749/com.waylonhuang.game I/Process﹕ Sending signal. PID: 30718 SIG: 9
01-17 16:59:01.645    2098-2098/com.waylonhuang.game D/dalvikvm﹕ Late-enabling CheckJNI
01-17 16:59:02.020    2098-2098/com.waylonhuang.game I/Adreno-EGL﹕ <qeglDrvAPI_eglInitialize:410>: EGL 1.4 QUALCOMM build: AU_LINUX_ANDROID_LNX.LA.3.5.1_RB1.04.04.02.048.018_msm8226_LNX.LA.3.5.1_RB1__release_AU ()
    OpenGL ES Shader Compiler Version: E031.24.00.08
    Build Date: 03/07/14 Fri
    Local Branch:
    Remote Branch: quic/LNX.LA.3.5.1_RB1.1
    Local Patches: NONE
    Reconstruct Branch: AU_LINUX_ANDROID_LNX.LA.3.5.1_RB1.04.04.02.048.018 + f2fd134 +  NOTHING
01-17 16:59:02.052    2098-2098/com.waylonhuang.game D/OpenGLRenderer﹕ Enabling debug mode 0
01-17 16:59:02.087    2098-2119/com.waylonhuang.game E/AndEngine﹕ Failed loading Bitmap in AssetBitmapTextureAtlasSource. AssetPath: gfx/splash.png
    java.io.FileNotFoundException: gfx/splash.png
            at android.content.res.AssetManager.openAsset(Native Method)
            at android.content.res.AssetManager.open(AssetManager.java:316)
            at android.content.res.AssetManager.open(AssetManager.java:290)
            at org.andengine.opengl.texture.atlas.bitmap.source.AssetBitmapTextureAtlasSource.create(AssetBitmapTextureAtlasSource.java:52)
            at org.andengine.opengl.texture.atlas.bitmap.source.AssetBitmapTextureAtlasSource.create(AssetBitmapTextureAtlasSource.java:43)
            at org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlasTextureRegionFactory.createFromAsset(BitmapTextureAtlasTextureRegionFactory.java:86)
            at org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlasTextureRegionFactory.createFromAsset(BitmapTextureAtlasTextureRegionFactory.java:82)
            at com.waylonhuang.game.ResourcesManager.loadSplashScreen(ResourcesManager.java:68)
            at com.waylonhuang.game.SceneManager.createSplashScene(SceneManager.java:93)
            at com.waylonhuang.game.GameActivity.onCreateScene(GameActivity.java:62)
            at org.andengine.ui.activity.BaseGameActivity$3.onCreateResourcesFinished(BaseGameActivity.java:171)
            at com.waylonhuang.game.GameActivity.onCreateResources(GameActivity.java:45)
            at org.andengine.ui.activity.BaseGameActivity.onCreateGame(BaseGameActivity.java:183)
            at org.andengine.ui.activity.BaseGameActivity.onSurfaceCreated(BaseGameActivity.java:112)
            at org.andengine.opengl.view.EngineRenderer.onSurfaceCreated(EngineRenderer.java:80)
            at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1501)
            at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)
01-17 16:59:02.106    2098-2119/com.waylonhuang.game E/AndEngine﹕ Failed loading Bitmap in AssetBitmapTextureAtlasSource. AssetPath: gfx/splash.png
    java.io.FileNotFoundException: gfx/splash.png
            at android.content.res.AssetManager.openAsset(Native Method)
            at android.content.res.AssetManager.open(AssetManager.java:316)
            at android.content.res.AssetManager.open(AssetManager.java:290)
            at org.andengine.opengl.texture.atlas.bitmap.source.AssetBitmapTextureAtlasSource.onLoadBitmap(AssetBitmapTextureAtlasSource.java:101)
            at org.andengine.opengl.texture.atlas.bitmap.source.AssetBitmapTextureAtlasSource.onLoadBitmap(AssetBitmapTextureAtlasSource.java:85)
            at org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlas.writeTextureToHardware(BitmapTextureAtlas.java:154)
            at org.andengine.opengl.texture.Texture.loadToHardware(Texture.java:145)
            at org.andengine.opengl.texture.TextureManager.updateTextures(TextureManager.java:268)
            at org.andengine.engine.Engine.onDrawFrame(Engine.java:633)
            at org.andengine.opengl.view.EngineRenderer.onDrawFrame(EngineRenderer.java:105)
            at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1523)
            at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)
01-17 16:59:02.110    2098-2119/com.waylonhuang.game W/dalvikvm﹕ threadid=15: thread exiting with uncaught exception (group=0x41717d40)
01-17 16:59:02.111    2098-2119/com.waylonhuang.game E/AndroidRuntime﹕ FATAL EXCEPTION: GLThread 7084
    Process: com.waylonhuang.game, PID: 2098
    org.andengine.util.exception.NullBitmapException: Caused by: class org.andengine.opengl.texture.atlas.bitmap.source.AssetBitmapTextureAtlasSource --> AssetBitmapTextureAtlasSource(gfx/splash.png) returned a null Bitmap.
            at org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlas.writeTextureToHardware(BitmapTextureAtlas.java:156)
            at org.andengine.opengl.texture.Texture.loadToHardware(Texture.java:145)
            at org.andengine.opengl.texture.TextureManager.updateTextures(TextureManager.java:268)
            at org.andengine.engine.Engine.onDrawFrame(Engine.java:633)
            at org.andengine.opengl.view.EngineRenderer.onDrawFrame(EngineRenderer.java:105)
            at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1523)
            at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)

【问题讨论】：

标签： java android oop bitmap android-studio

【解决方案1】：

您必须在路径 app/src/main/ 中创建“assets”文件夹，并将带有 splash.png 的“gfx”文件夹放入其中

【讨论】：

这个结构允许我的主要活动加载，但它仍然说找不到文件。之前；它说找不到文件并导致我的主要活动崩溃。
确保您的文件位于 gfx 文件夹中（不在任何其他内部文件夹中）并且代码中的文件格式完全相同（听起来很明显，但有时像我这样的人:) 真的不付钱注意）
我相信该文件现在已找到，但我得到一个空位图异常
很难说...你能把你的代码分享给发生错误的行吗？

【解决方案2】：

如果你使用的是Eclipse，你应该直接从eclipse中创建“gfx”文件夹，然后将splash.png图片拖放到文件夹内，确保你复制文件，而不是链接它，当提示。 链接可能会产生可访问性问题。这是我在 Eclipse 中的一个小项目的工作项目结构：

这是我的调用者方法的样子：

public void loadSplashResources() {
    BitmapTextureAtlasTextureRegionFactory.setAssetBasePath("gfx/splash/");
    mSplashTextureAtlas = new BitmapTextureAtlas(mActivity.getTextureManager(), 480, 800, TextureOptions.BILINEAR);
    mSplashTextureRegion = BitmapTextureAtlasTextureRegionFactory.createFromAsset(mSplashTextureAtlas, mActivity, "splash.png", 0, 0);
    mSplashTextureAtlas.load();
    mFont1 = FontFactory.create(mActivity.getFontManager(), mActivity.getTextureManager(), 256, 256, Typeface.create(Typeface.DEFAULT, Typeface.NORMAL), 10, Color.GRAY);
    mFont1.load();
}

为资源优化目的使用卸载方法也是明智之举：

public void unloadSplashResources() {
    mSplashTextureAtlas.unload();
    mSplashTextureRegion = null;
    mFont1.unload();
    mFont1 = null;
}

在我的主要活动中，然后我在加载资源时调用启动屏幕的加载：

@Override
protected void onCreateResources() {

    mResourceManager = ResourceManager.getInstance();
    mResourceManager.prepare(this);
    mResourceManager.loadSplashResources();
    mSceneManager = SceneManager.getInstance();

}

一旦我创建了一个新场景，我就会卸载飞溅：

@Override
protected Scene onCreateScene() {
    mEngine.registerUpdateHandler(new TimerHandler(2f, new ITimerCallback() {
        public void onTimePassed(final TimerHandler pTimerHandler) {
            mEngine.unregisterUpdateHandler(pTimerHandler);
            mResourceManager.loadGameResources();
            mSceneManager.setScene(SceneType.SCENE_MENU);
            mResourceManager.unloadSplashResources();
        }
    }));

希望您可以交叉参考这些示例，以查看您的启动画面是否在任何地方进行了类似配置，并找出问题的原因。

【讨论】：