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适用于Android的libGDX动画（android的动画有哪些）

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本文将分享适用于Android的libGDX动画的详细内容，并且还将对android的动画有哪些进行详尽解释，此外，我们还将为大家带来关于Android/Libgdx：检测多任务按钮、android–

本文将分享适用于Android的libGDX动画的详细内容，并且还将对android的动画有哪些进行详尽解释，此外，我们还将为大家带来关于Android / Libgdx：检测多任务按钮、android – libgdx background图像更改、android – LibGDX gdx-freetype BlueStacks、android – libGDX IntelliJ IDEA无法访问com.badlogic.gdx.Application的相关知识，希望对你有所帮助。

本文目录一览：

适用于Android的libGDX动画（android的动画有哪些）

适用于Android的libGDX动画（android的动画有哪些）

如果我为桌面启动它，它运行得很好，但是为我的Android导出后，它在我启动该应用程序后立即崩溃。

所以我的问题…：

它适用于台式机而不适用于我的Android有什么问题？

public class Player implements Serializable{/** *  */private static final long serialVersionUID = -7913517465400462738L;Vector2 position;private static final int col = 4;private static final int row = 4;private Animation animation;private Texture playerTexture;private TextureRegion[] frames;private TextureRegion currentFrame;private float stateTime;private int x,y, deltaX, deltaY;public Player(Vector2 position){    this.position = position;    playerTexture = new Texture(Gdx.files.internal("Charackter/charackter_sprite.png"));    TextureRegion[][] temp = TextureRegion.split(playerTexture, playerTexture.getWidth() / col, playerTexture.getHeight() / row);    frames = new TextureRegion[col* row];    int index = 0;    for(int i = 0; i < row; i++){        for(int j = 0; j < col; j++){            frames[index++] = temp[i][j];        }    }    animation = new Animation(1, frames);    stateTime = 0;    currentFrame = animation.getKeyFrame(0);    deltaX = Gdx.graphics.getWidth();    deltaY = Gdx.graphics.getHeight();}public void update(){    if(stateTime < 4){    stateTime += Gdx.graphics.getDeltaTime();    }    else{        stateTime = 0;    }    if (Gdx.input.isTouched())    {        x = Gdx.input.getX();        y = Gdx.input.getY();        if(x < deltaX * 50 / 100 && y > deltaY * 35 / 100 && y < deltaY * 65 / 100){            position.x -= 1;            currentFrame = animation.getKeyFrame(4 + stateTime);        }        if(x > deltaX * 50 / 100 && y > deltaY * 35 / 100 && y < deltaY * 65 / 100){            position.x += 1;            currentFrame = animation.getKeyFrame(8 + stateTime);        }        if(y < deltaY * 35 / 100 ){            position.y += 1;            currentFrame = animation.getKeyFrame(12 + stateTime);        }        if(y > deltaY * 65 / 100 ){            position.y -= 1;            currentFrame = animation.getKeyFrame(0 + stateTime);        }    }}public Vector2 getPosition() {    return position;}public void setPosition(Vector2 position) {    this.position = position;}public TextureRegion getCurrentFrame() {    return currentFrame;}}

。

public class PlayScreen implements Screen {private SpriteBatch batch;private Vector2 position;private Game game;private Player player;private Texture bild;public PlayScreen(Game game){    this.game = game;}@Overridepublic void render(float delta) {           Gdx.gl.glClearColor(1, 1, 1, 1);    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);    player.update();    batch.begin();    batch.draw(player.getCurrentFrame(), player.getPosition().x, player.getPosition().y);    batch.end();}@Overridepublic void resize(int width, int height) {    // TODO Auto-generated method stub}@Overridepublic void show() {    batch = new SpriteBatch();    position = new Vector2(Gdx.graphics.getWidth() / 2, Gdx.graphics.getHeight() / 2);    player = new Player(position);    bild = new Texture("spongebob.png");}@Overridepublic void hide() {    // TODO Auto-generated method stub}@Overridepublic void pause() {    // TODO Auto-generated method stub}@Overridepublic void resume() {    // TODO Auto-generated method stub}@Overridepublic void dispose() {    batch.dispose();}}

Logcat

11-25 11:25:20.990: D/dalvikvm(862): Trying to load lib /data/app-lib/com.mygdx.game.android-2/libgdx.so 0xb1caad5011-25 11:25:21.040: D/dalvikvm(862): Added shared lib /data/app-lib/com.mygdx.game.android-2/libgdx.so 0xb1caad5011-25 11:25:21.040: D/dalvikvm(862): No JNI_OnLoad found in /data/app-lib/com.mygdx.game.android-2/libgdx.so 0xb1caad50, skipping init11-25 11:25:21.100: D/AndroidRuntime(862): Shutting down VM11-25 11:25:21.100: W/dalvikvm(862): threadid=1: thread exiting with uncaught exception (group=0xb1a73d70)11-25 11:25:21.110: E/AndroidRuntime(862): FATAL EXCEPTION: main11-25 11:25:21.110: E/AndroidRuntime(862): Process: com.mygdx.game.android, PID: 86211-25 11:25:21.110: E/AndroidRuntime(862): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mygdx.game.android/com.mygdx.game.android.AndroidLauncher}: com.badlogic.gdx.utils.GdxRuntimeException: Libgdx requires OpenGL ES 2.011-25 11:25:21.110: E/AndroidRuntime(862):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2197)11-25 11:25:21.110: E/AndroidRuntime(862):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2258)11-25 11:25:21.110: E/AndroidRuntime(862):  at android.app.ActivityThread.access$800(ActivityThread.java:138)11-25 11:25:21.110: E/AndroidRuntime(862):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1209)11-25 11:25:21.110: E/AndroidRuntime(862):  at android.os.Handler.dispatchMessage(Handler.java:102)11-25 11:25:21.110: E/AndroidRuntime(862):  at android.os.Looper.loop(Looper.java:136)11-25 11:25:21.110: E/AndroidRuntime(862):  at android.app.ActivityThread.main(ActivityThread.java:5026)11-25 11:25:21.110: E/AndroidRuntime(862):  at java.lang.reflect.Method.invokeNative(Native Method)11-25 11:25:21.110: E/AndroidRuntime(862):  at java.lang.reflect.Method.invoke(Method.java:515)11-25 11:25:21.110: E/AndroidRuntime(862):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)11-25 11:25:21.110: E/AndroidRuntime(862):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)11-25 11:25:21.110: E/AndroidRuntime(862):  at dalvik.system.NativeStart.main(Native Method)11-25 11:25:21.110: E/AndroidRuntime(862): Caused by: com.badlogic.gdx.utils.GdxRuntimeException: Libgdx requires OpenGL ES 2.011-25 11:25:21.110: E/AndroidRuntime(862):  at com.badlogic.gdx.backends.android.AndroidGraphics.createGLSurfaceView(AndroidGraphics.java:122)11-25 11:25:21.110: E/AndroidRuntime(862):  at com.badlogic.gdx.backends.android.AndroidGraphics.<init>(AndroidGraphics.java:102)11-25 11:25:21.110: E/AndroidRuntime(862):  at com.badlogic.gdx.backends.android.AndroidGraphics.<init>(AndroidGraphics.java:95)11-25 11:25:21.110: E/AndroidRuntime(862):  at com.badlogic.gdx.backends.android.AndroidApplication.init(AndroidApplication.java:133)11-25 11:25:21.110: E/AndroidRuntime(862):  at com.badlogic.gdx.backends.android.AndroidApplication.initialize(AndroidApplication.java:99)11-25 11:25:21.110: E/AndroidRuntime(862):  at com.mygdx.game.android.AndroidLauncher.onCreate(AndroidLauncher.java:14)11-25 11:25:21.110: E/AndroidRuntime(862):  at android.app.Activity.performCreate(Activity.java:5242)11-25 11:25:21.110: E/AndroidRuntime(862):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)11-25 11:25:21.110: E/AndroidRuntime(862):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2161)11-25 11:25:21.110: E/AndroidRuntime(862):  ... 11 more

我是Java的新手，所以我希望它是正确的部分：x

答案1

小编典典

有一些人例外，logcat说：

GdxRuntimeException: Libgdx requires OpenGL ES 2.0

这是由于您的模拟器未将gpu用于图形处理，最好的解决方案是使用手机来测试您的应用程序
由于某些原因（可能是opengl不能出错），以下错误的解决方案也可能会帮助您

 com.badlogic.gdx.utils.GdxRuntimeException: Error reading file: xxx.xxx

如果只有在Windows下可以在Android上进行实验时才遇到此错误，则可能是因为其中一项资产与您在代码中使用的名称不完全匹配。Unix区分大小写，因此image.jpg与Image.jpg不同。因此，请检查您所需要的每项资产，以确保名称匹配！

Android / Libgdx：检测多任务按钮

Android / Libgdx：检测多任务按钮

我正在使用Libgdx为 Android开发游戏,我注意到当我按下多任务按钮时,当我浏览以前的应用程序列表时,游戏仍然在后台运行(我可以看到游戏继续在后台运行) ).显然,我想暂停比赛.

我正在使用Screen类,只有在应用程序有效更改时才会调用pause()方法.我没有设法检测按钮事件作为解决方法.

谢谢你的帮助.

解决方法

是否在此方案中调用pause()取决于设备/操作系统.

你想要监听的密钥是KEYCODE_APP_SWITCH.如果没有使用InputAdapter(我不知道相关的Keys值,如果它甚至存在),那么你需要查看gdx并查看原因它没有通过.

android – libgdx background图像更改

android – libgdx background图像更改

我想每隔x秒更改菜单的背景图像.我正在使用libGDX scene2D.ui来制作菜单. TestScreen类扩​​展了AbstractScreen,它是一个实现libGDX的Screen类的抽象类.
问题：通过堆栈上的Table对象将 Image加载到舞台后,将图像引用更改为不同的图像. Stage.draw()不关心它是否制作了原始图像的副本.我想将背景保持为Image类并通过stage.draw()进行渲染.

更复杂的是,如果我在render()方法中将图像更改为另一个图像,则image.setVisible(false)也会停止工作.

public class TestScreen extends AbstractScreen {

private Stage stage;
private Image background;
private boolean ChangeBackground = true;
private final float refreshTime = 2.0f; // refresh to new image every 2 seconds.
private float counter = refreshTime;

public TestScreen(Game game) {
    super(game);
}

@Override
public void render(float deltaTime) {
    Gdx.gl.glClearColor(0.0f,0.0f,1.0f);
    Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

    if(ChangeBackground){
        counter -= deltaTime;
        if(counter < 0){
            counter = refreshTime;
            // Assets class has the 12 images loaded as "Image" objects already.
            // I simple want to change the reference to other (already loaded in memory images) ...
            // and make stage render the new image.
            background = Assets.instance.wallpapers[(int) (Math.random()*12)];  // The image should change.
            //background.setVisible(false);
        }
    }
    stage.act(deltaTime);
    stage.draw();
}

@Override
public void resize(int width,int height) {
    stage.setViewport(Constants.VIEWPORT_GUI_WIDTH,Constants.VIEWPORT_GUI_HEIGHT,false);
}
@Override
public void show() {
    stage = new Stage();
    Gdx.input.setInputProcessor(stage);
    makeStage();
}
@Override
public void hide() {
    stage.dispose();
}
@Override
public void pause() {   
}

// Builds the Background later and adds it to a stage through a stack.
// This is how it''s done in my game. I made this test bench to demonstrate.
private void makeStage() {
    Table BackGroundLayer = new Table();
    background = Assets.instance.wallpapers[(int) (Math.random()*12)];
    BackGroundLayer.add(background);

    Stack layers = new Stack();
    layers.setSize(800,480);
    layers.add(BackGroundLayer);

    stage.clear();
    stage.addActor(layers);
}

}

解决方法

Image是Actor的子类.主要区别在于,Image内部有Drawable.如果调用stage.draw()调用Image的draw(),则会绘制此Drawable.您可以使用setDrawable(Drawable param)更改Drawable,而不是更改Image.
什么是Drawable？它是实现Drawable接口的任何类,例如TextureRegionDrawable.如果您使用的是TextureRegions,则可以使用此构造函数：TextureRegionDrawable(TextureRegion region);.也许将背景图像存储在可绘制数组中会更好,这样每次设置新的Drawable时都不必调用construcor.示例代码： 

TextureRegionDrawable[] images = new TextureRegionDrawable[12];
for (int i = 0; i<12; i++) {
    images[i] = new TextureRegionDrawable(Assets.instance.textureRegions[i]);
}

然后在你的渲染中：

if(changeBackground) {
   counter -= delta;
   if (counter < 0) {
       counter = refreshtime
       background.setDrawable(images[(int)(Math.random()*12)]);
   }
}

这应该工作

android – LibGDX gdx-freetype BlueStacks

android – LibGDX gdx-freetype BlueStacks

我有正确的应用程序在真正的 Android设备和桌面上. Homever当我试图在BlueStacks模拟器上启动它时,我遇到了一些问题.已经下载并添加到libs .so文件,从这里 http://libgdx.googlecode.com/svn/tags/0.9.6/extensions/gdx-freetype/libs/linux32/

但仍然：

11-08 21:14:10.280: E/AndroidRuntime(1378): FATAL EXCEPTION: GLThread 9
11-08 21:14:10.280: E/AndroidRuntime(1378): com.badlogic.gdx.utils.GdxRuntimeException: Couldn''t load shared library ''gdx-freetype'' for target: Linux,32-bit
11-08 21:14:10.280: E/AndroidRuntime(1378):     at com.badlogic.gdx.utils.SharedLibraryLoader.load(SharedLibraryLoader.java:110)
11-08 21:14:10.280: E/AndroidRuntime(1378):     at com.badlogic.gdx.graphics.g2d.freetype.FreeType.initFreeType(FreeType.java:541)
11-08 21:14:10.280: E/AndroidRuntime(1378):     at com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.<init>(FreeTypeFontGenerator.java:64)
11-08 21:14:10.280: E/AndroidRuntime(1378):     at com.axl.where.test.create(test.java:153)
11-08 21:14:10.280: E/AndroidRuntime(1378):     at com.badlogic.gdx.backends.android.AndroidGraphics.onSurfaceChanged(AndroidGraphics.java:334)
11-08 21:14:10.280: E/AndroidRuntime(1378):     at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1356)
11-08 21:14:10.280: E/AndroidRuntime(1378):     at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1118)
11-08 21:14:10.280: E/AndroidRuntime(1378): Caused by: java.lang.UnsatisfiedLinkError: Couldn''t load gdx-freetype: findLibrary returned null
11-08 21:14:10.280: E/AndroidRuntime(1378):     at java.lang.Runtime.loadLibrary(Runtime.java:429)
11-08 21:14:10.280: E/AndroidRuntime(1378):     at java.lang.System.loadLibrary(System.java:554)
11-08 21:14:10.280: E/AndroidRuntime(1378):     at    com.badlogic.gdx.utils.SharedLibraryLoader.load(SharedLibraryLoader.java:106)
11-08 21:14:10.280: E/AndroidRuntime(1378):     ... 6 more

有任何想法吗 ？ LibGDX 0.9.9

解决方法

您需要在libs目录中添加一个x86文件夹(沿着armeabi目录),并在其上复制此文件：

http://libgdx.badlogicgames.com/nightlies/dist/extensions/gdx-freetype/x86/

另外,你正在使用v0.9.6文件o.O使用nightlies：

http://libgdx.badlogicgames.com/nightlies/dist/extensions/gdx-freetype/

android – libGDX IntelliJ IDEA无法访问com.badlogic.gdx.Application

android – libGDX IntelliJ IDEA无法访问com.badlogic.gdx.Application

我用libGDX setup ui创建了一个项目.该
项目在 Eclipse中运行良好,但是当我在 Android Studio中导入它时,
android项目MainActivity.java抛出4个异常： 
java: cannot access com.badlogic.gdx.Application
class file for com.badlogic.gdx.Application not found

java: cannot find symbol
symbol:   variable super
location: class com.vestrel00.nekko.MainActivity

java: cannot find symbol
symbol:   method initialize(com.vestrel00.nekko.KFNekko,com.badlogic.gdx.backends.android.AndroidApplicationConfiguration)
location: class com.vestrel00.nekko.MainActivity

java: method does not override or implement a method from a supertype

有没有人有办法解决吗？

解决方法

所以我已经解决了我的问题：我刚刚将libGdx.jar文件添加到我的桌面和android项目中.

解：

右键单击项目>打开模块设置>图书馆>小绿色按钮(新项目库Alt插入)> Java>然后选择libGdx.jar文件.之后,您必须将此库包含在桌面和Android项目中.

不要关闭窗口,选择模块> android>依赖性> <小绿色按钮>模块依赖关系并选择主项目.对桌面执行相同操作并按确定. 就这样.我的所有项目现在都正常工作. 这是一个图片教程.它也解释了如何运行桌面项目. http://imgur.com/a/IBFIV

今天关于适用于Android的libGDX动画和android的动画有哪些的讲解已经结束，谢谢您的阅读，如果想了解更多关于Android / Libgdx：检测多任务按钮、android – libgdx background图像更改、android – LibGDX gdx-freetype BlueStacks、android – libGDX IntelliJ IDEA无法访问com.badlogic.gdx.Application的相关知识，请在本站搜索。

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