使用LibGDX Gdx.files.internal无法加载.png文件 [英] Trouble loading .png file using LibGDX Gdx.files.internal

问题描述

我正在尝试将纹理加载到libGDX，但是我发现文件未找到异常.

I'm trying to load a Texture to libGDX and I'm getting a file not found exception.

这是试图加载.png文件的代码.

Here's the code that's trying to load the .png file.

//Textures
private Texture tiles;
private TextureRegion grassImage;
private TextureRegion dirtImage;
private TextureRegion stoneImage;

//Entities
private Texture entities;
private TextureRegion playerImage;

public WorldRenderer(World world, boolean debug) {
    this.world = world;
    this.camera = new OrthographicCamera(CAMERA_WIDTH, CAMERA_HEIGHT);
    this.camera.position.set(CAMERA_WIDTH/2f, CAMERA_HEIGHT/2f, 0);
    this.camera.update();
    this.debug = debug;
    spriteBatch = new SpriteBatch();
    loadTextures();
}

public void loadTextures() {
    tiles = new Texture(Gdx.files.internal("tiles.png"));
    grassImage = new TextureRegion(tiles, 0, 0, 32, 32);
    dirtImage = new TextureRegion(tiles, 0, 64, 32, 32);
    stoneImage = new TextureRegion(tiles, 64, 0, 32, 32);

    entities = new Texture(Gdx.files.internal("entities.png"));
    playerImage = new TextureRegion(entities, 0, 0, 32, 32);
}

public void render() {
    spriteBatch.begin();
    drawGrass();
    drawDirt();
    drawStone();
    drawPlayer();
    spriteBatch.end();
    if (debug) {
        drawDebug();
    }
}

这是错误消息:

Exception in thread "LWJGL Application" com.badlogic.gdx.utils.GdxRuntimeException: Couldn't load file: tiles.png
    at com.badlogic.gdx.graphics.Pixmap.<init>(Pixmap.java:140)
    at com.badlogic.gdx.graphics.glutils.FileTextureData.prepare(FileTextureData.java:64)
    at com.badlogic.gdx.graphics.Texture.load(Texture.java:175)
    at com.badlogic.gdx.graphics.Texture.create(Texture.java:159)
    at com.badlogic.gdx.graphics.Texture.<init>(Texture.java:133)
    at com.badlogic.gdx.graphics.Texture.<init>(Texture.java:122)
    at com.mr.zen.level.WorldRenderer.loadTextures(WorldRenderer.java:62)
    at com.mr.zen.level.WorldRenderer.<init>(WorldRenderer.java:58)
    at com.mr.zen.screens.GameScreen.show(GameScreen.java:29)
    at com.badlogic.gdx.Game.setScreen(Game.java:62)
    at com.mr.zen.Zen.create(Zen.java:12)
    at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:136)
    at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:114)
Caused by: com.badlogic.gdx.utils.GdxRuntimeException: File not found: tiles.png (Internal)
    at com.badlogic.gdx.files.FileHandle.read(FileHandle.java:132)
    at com.badlogic.gdx.files.FileHandle.length(FileHandle.java:586)
    at com.badlogic.gdx.files.FileHandle.readBytes(FileHandle.java:220)
    at com.badlogic.gdx.graphics.Pixmap.<init>(Pixmap.java:137)
    ... 12 more

loadTextures()方法中存在问题.找不到文件

The problem exists in the loadTextures() method. Can't find the file

 tiles = new Texture(Gdx.files.internal("tiles.png"));

我已经确保将.png文件放入android项目文件的资产文件夹中.我不知道是什么原因造成的.我已经将其用于其他项目，但是这次出现了一些问题.感谢您的帮助.

I've made sure to put the .png files in the assets folder of the android project files. I have no idea what's causing this; I've gotten this to work on other projects but this time around something went awry. Thanks for any help.

推荐答案

通过清理项目(Eclipse)解决无法加载文件"问题

(对于该解决方案，您期望图像文件的路径是正确的.)

Solving the "Couldn't load file" issue by cleaning the project (Eclipse)

(For this solution is expected that the paths to your image files are correct.)

当我向项目中添加新图像时，有时会出现无法加载文件的问题.我不知道为什么，但是我的LibGDX游戏的台式机版本不会用新图像(已添加到 Mygame-android中的新图像)更新文件夹 Mygame-desktop/bin/data /assets/data ). (也就是说，每次保存文件时，Eclipse都会构建项目，因为我设置了 Project>自动构建选项.)

Sometimes I have this Couldn't load file problem when I add new images to my project. I don't know why, but my Desktop version of my LibGDX game doesn't update the folder Mygame-desktop/bin/data with my new images (which were added to Mygame-android/assets/data) when the project is built. (That is, every time I save a file, Eclipse builds the project, cause I set the option Project > Build Automatically.)

它应该工作，因为在LibGDX中，桌面和HTML项目具有指向Android项目资产文件夹的链接.因此，我不认为需要将我的新图像手动复制到 Mygame-desktop/bin/data .

It should work, cause in LibGDX the Desktop and HTML projects have a link to the Android project assets folder. So, I was not suppose to need to copy manually my new images to Mygame-desktop/bin/data.

在Eclipse上，解决方案是先清理(菜单 Project> Clean ... )所有用于游戏的LibGDX项目，然后清理 Mygame-android/assets/数据将被正确复制到 Mygame-desktop/bin/data .

The solution, on Eclipse, is to clean (menu Project > Clean...) all LibGDX projects you use for your game, then the files in Mygame-android/assets/data will be copied to Mygame-desktop/bin/data properly.

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