实现一些浮动后，LibGDX在Android上崩溃

Question

因此，我的LibGDX项目在台式机和android上也能正常运行，但是当我实现一个用于测量玩家得分的浮动对象时，游戏将在android上崩溃。 这个想法是，每当屏幕向上滚动时，分数将降低，而屏幕向下滚动时，分数将增加。 我正在使用手势检测器控制器进行滚动。 这是主要代码：

public class WorldScreen implements Screen{

    private Texture bgCity;
    private Texture bgLoop;
    private Texture hud;

    public static OrthographicCamera camera;
    SpriteBatch batch;

    Rectangle player;
    Rectangle background;
    Rectangle backgroundloop;

    public float camx = 0;
    public float camy = 0;

    public static float score = 384400000;

    GestureListenerC controller;

    public WorldScreen(final JetpackGame aa) {

    }

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

        camx = camera.viewportWidth / 2f;
        camy = camera.viewportHeight / 2f;

        controller.update();
        camera.update();

        batch.setProjectionMatrix(camera.combined);
        batch.begin();
        batch.draw(bgCity, background.x, background.y);
        if(background.y <= -3296){
            if(backgroundloop.y <= -800) backgroundloop.y = 0;
        }

        if(camy >= 100) batch.draw(bgLoop, backgroundloop.x, backgroundloop.y);
        if(camera.position.y >= 5360) camera.position.y = 4420;

        batch.end();        



    }
    @Override
    public void resize(int width, int height) {

    }

    @Override
    public void show() {
        controller = new GestureListenerC();
        GestureDetector gestureDetector = new GestureDetector(20, 0.5f, 2, 0.15f, controller);
        Gdx.input.setInputProcessor(gestureDetector);

        bgCity = new Texture(Gdx.files.internal("img/city_BG.png"));
        bgLoop = new Texture(Gdx.files.internal("img/loopBG.png"));
        hud = new Texture(Gdx.files.internal("img/hud.png"));

        camera = new OrthographicCamera();
        camera.setToOrtho(false, 420,800);
        batch = new SpriteBatch();

        player = new Rectangle();
        player.x = 420/2;
        player.y = 800/2;

        background = new Rectangle();
        background.x = 0;
        background.y = 0;
        background.width = 479;
        background.height = 4096;

        backgroundloop = new Rectangle();
        backgroundloop.x = 0;
        backgroundloop.y = 4096;
        backgroundloop.width = 512;
        backgroundloop.height = 1024;

    }

    @Override
    public void hide() {

    }

    @Override
    public void pause() {

    }

    @Override
    public void resume() {

    }

    @Override
    public void dispose() {
        batch.dispose();
        bgCity.dispose();
        bgLoop.dispose();
        hud.dispose();
    }

    }

And here is the controller class:

    public class GestureListenerC implements GestureListener{

    public static float velX, velY;
    public static boolean flinging = false;
    float initialScale = 1;

    public boolean touchDown (float x, float y, int pointer, int button) {
        flinging = false;
        return false;
    }

    @Override
    public boolean tap (float x, float y, int count, int button) {
        return false;
    }

    @Override
    public boolean longPress (float x, float y) {
        return false;
    }

    @Override
    public boolean fling (float velocityX, float velocityY, int button) {
        flinging = true;
        velX = WorldScreen.camera.zoom * velocityX * 0.5f;
        velY = WorldScreen.camera.zoom * velocityY * 0.5f;
        return false;
    }

    @Override
    public boolean pan (float x, float y, float deltaX, float deltaY) {
        WorldScreen.camera.position.y += deltaY;
        WorldScreen.score -= deltaY;
        return false;
    }

    @Override
    public boolean panStop (float x, float y, int pointer, int button) {
        return false;
    }

    @Override
    public boolean zoom (float originalDistance, float currentDistance) {
        return false;
    }

    @Override
    public boolean pinch (Vector2 initialFirstPointer, Vector2 initialSecondPointer, Vector2 firstPointer, Vector2 secondPointer) {
        return false;
    }

    public void update () {
        if (flinging) {
            velY *= 0.98f;
            WorldScreen.score -= 0.2f * velY;
            WorldScreen.camera.position.add(0, velY * Gdx.graphics.getDeltaTime(), 0);
            if (Math.abs(velY) < 0.01f) velY = 0;
        }
    }
}

这是logcat在仿真器上运行后所说的：（我不喜欢使用它，因为它经常由于仿真器的图形问题而崩溃。）

01-21 10:01:37.982: W/dalvikvm(274): threadid=1: thread exiting with uncaught     exception (group=0x4001d800)
01-21 10:01:38.002: E/AndroidRuntime(274): FATAL EXCEPTION: main
01-21 10:01:38.002: E/AndroidRuntime(274): java.lang.RuntimeException: Unable to start activityy ComponentInfo{com.vahlaville.game.android/com.vahlaville.game.android.AndroidLauncher}: com.badlogic.gdx.utils.GdxRuntimeException: Libgdx requires OpenGL ES 2.0
01-21 10:01:38.002: E/AndroidRuntime(274):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
01-21 10:01:38.002: E/AndroidRuntime(274):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
01-21 10:01:38.002: E/AndroidRuntime(274):  at android.app.ActivityThread.access$2300(ActivityThread.java:125)
01-21 10:01:38.002: E/AndroidRuntime(274):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
01-21 10:01:38.002: E/AndroidRuntime(274):  at android.os.Handler.dispatchMessage(Handler.java:99)
01-21 10:01:38.002: E/AndroidRuntime(274):  at android.os.Looper.loop(Looper.java:123)
01-21 10:01:38.002: E/AndroidRuntime(274):  at android.app.ActivityThread.main(ActivityThread.java:4627)
01-21 10:01:38.002: E/AndroidRuntime(274):  at java.lang.reflect.Method.invokeNative(Native Method)
01-21 10:01:38.002: E/AndroidRuntime(274):  at java.lang.reflect.Method.invoke(Method.java:521)
01-21 10:01:38.002: E/AndroidRuntime(274):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
01-21 10:01:38.002: E/AndroidRuntime(274):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
01-21 10:01:38.002: E/AndroidRuntime(274):  at dalvik.system.NativeStart.main(Native Method)
01-21 10:01:38.002: E/AndroidRuntime(274): Caused by: com.badlogic.gdx.utils.GdxRuntimeException: Libgdx requires OpenGL ES 2.0
01-21 10:01:38.002: E/AndroidRuntime(274):  at com.badlogic.gdx.backends.android.AndroidGraphics.createGLSurfaceView(AndroidGraphics.java:122)
01-21 10:01:38.002: E/AndroidRuntime(274):  at com.badlogic.gdx.backends.android.AndroidGraphics.<init>(AndroidGraphics.java:102)
01-21 10:01:38.002: E/AndroidRuntime(274):  at com.badlogic.gdx.backends.android.AndroidGraphics.<init>(AndroidGraphics.java:95)
01-21 10:01:38.002: E/AndroidRuntime(274):  at com.badlogic.gdx.backends.android.AndroidApplication.init(AndroidApplication.java:133)
01-21 10:01:38.002: E/AndroidRuntime(274):  at com.badlogic.gdx.backends.android.AndroidApplication.initialize(AndroidApplication.java:99)
01-21 10:01:38.002: E/AndroidRuntime(274):  at com.vahlaville.game.android.AndroidLauncher.onCreate(AndroidLauncher.java:18)
01-21 10:01:38.002: E/AndroidRuntime(274):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
01-21 10:01:38.002: E/AndroidRuntime(274):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
01-21 10:01:38.002: E/AndroidRuntime(274):  ... 11 more

Answer 1

GdxRuntimeException：Libgdx需要OpenGL ES 2.0

确保在您的AndroidManifest.xml中包含以下内容：

<uses-feature android:glEsVersion="0x00020000" android:required="true" />

如果这样做，则意味着您的设备没有libgdx 所需的OpenGL ES v2。