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我在 Android Studio 上构建了一个简单的应用程序,使用 Libgdx 来显示由 6 个 .png 图像组成的动画,我制作了一个 TextureAtlas。该项目构建良好,没有任何错误,但是当我尝试在模拟器中运行应用程序时,它在打开时崩溃。我知道这不是模拟器的错误,因为我已经使用相同的配置和库构建了一个应用程序来成功显示文本,而且这个应用程序也在我的 Galaxy Note 5 上崩溃。

这是核心 .java 文件的代码:

package com.mygdx.mytestgame;

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.g2d.Animation;
import com.badlogic.gdx.graphics.g2d.TextureAtlas;
import com.badlogic.gdx.graphics.g2d.TextureRegion;

public class MyTestGame extends ApplicationAdapter {
    private SpriteBatch batch;
    private TextureAtlas shooterAtlas;
    private Animation<TextureRegion> animation;
    private float timePassed = 0;

@Override
public void create () {
    batch = new SpriteBatch();

    shooterAtlas = new TextureAtlas(Gdx.files.internal("shooter.atlas"));
    animation = new Animation<TextureRegion>(1/30f, shooterAtlas.getRegions());
}

@Override
public void dispose() {
    batch.dispose();
    shooterAtlas.dispose();
}

@Override
public void render () {
    Gdx.gl.glClearColor(0,1,0,1);
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

    batch.begin();
    timePassed += Gdx.graphics.getDeltaTime();
    batch.draw(animation.getKeyFrame(timePassed, true), 300, 500);
    batch.end();
    }

}

这是 Android 清单文件:

<?xml version="1.0" encoding="utf-8"?>

<uses-sdk android:minSdkVersion="9" android:targetSdkVersion="26" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/GdxTheme" >
    <activity
        android:name="com.mygdx.mytestgame.AndroidLauncher"
        android:label="@string/app_name" 
        android:screenOrientation="landscape"
        android:configChanges="keyboard|keyboardHidden|orientation|screenSize">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

这是 logcat 上显示的崩溃:

11-02 12:52:27.514 3634-3666/com.mygdx.mytestgame E/AndroidRuntime: FATAL EXCEPTION: GLThread 193
                                                                Process: com.mygdx.mytestgame, PID: 3634
                                                                com.badlogic.gdx.utils.GdxRuntimeException: Error reading file: shooter.atlas (Internal)
                                                                    at com.badlogic.gdx.backends.android.AndroidFileHandle.read(AndroidFileHandle.java:77)
                                                                    at com.badlogic.gdx.graphics.g2d.TextureAtlas$TextureAtlasData.<init>(TextureAtlas.java:103)
                                                                    at com.badlogic.gdx.graphics.g2d.TextureAtlas.<init>(TextureAtlas.java:231)
                                                                    at com.badlogic.gdx.graphics.g2d.TextureAtlas.<init>(TextureAtlas.java:226)
                                                                    at com.badlogic.gdx.graphics.g2d.TextureAtlas.<init>(TextureAtlas.java:216)
                                                                    at com.mygdx.mytestgame.MyTestGame.create(MyTestGame.java:21)
                                                                    at com.badlogic.gdx.backends.android.AndroidGraphics.onSurfaceChanged(AndroidGraphics.java:275)
                                                                    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1555)
                                                                    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1270)
                                                                 Caused by: java.io.FileNotFoundException: shooter.atlas
                                                                    at android.content.res.AssetManager.openAsset(Native Method)
                                                                    at android.content.res.AssetManager.open(AssetManager.java:374)
                                                                    at android.content.res.AssetManager.open(AssetManager.java:348)
                                                                    at com.badlogic.gdx.backends.android.AndroidFileHandle.read(AndroidFileHandle.java:75)
                                                                    at com.badlogic.gdx.graphics.g2d.TextureAtlas$TextureAtlasData.<init>(TextureAtlas.java:103) 
                                                                    at com.badlogic.gdx.graphics.g2d.TextureAtlas.<init>(TextureAtlas.java:231) 
                                                                    at com.badlogic.gdx.graphics.g2d.TextureAtlas.<init>(TextureAtlas.java:226) 
                                                                    at com.badlogic.gdx.graphics.g2d.TextureAtlas.<init>(TextureAtlas.java:216) 
                                                                    at com.mygdx.mytestgame.MyTestGame.create(MyTestGame.java:21) 
                                                                    at com.badlogic.gdx.backends.android.AndroidGraphics.onSurfaceChanged(AndroidGraphics.java:275) 
                                                                    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1555) 
                                                                    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1270) 

它说读取文件“shooter.atlas”时出错,这是我用于动画的TextureAtlas。此文件名正确,位于C:\Users\user\Documents\libGDX Projects\android\assets

解决方案是什么?

4

1 回答 1

1

我解决了这个问题,事实证明,这个问题非常简单。我从在线资源下载了地图集文件,该文件的地图集格式不正确。相反,它是一个包含 .png 文件的文件夹。所以我提取了这些 .png 文件,并使用 gdx-texturepacker.jar 工具从 .png 文件中手动打包了一个 Atlas 文件,该工具可以从这里下载。我将 Atlas 文件导出到同一个工作目录:C:\Users\user\Documents\libGDX Projects\android\assets并简单地将“shooter.atlas”重命名为新 Atlas 文件的名称:“shooter2.atlas”等等!

于 2017-11-02T11:45:10.383 回答