我使用TexturePacker。我打包了我的纹理,我有这个文件:
sample.png
sample.tps
sample.xml
sample.java
这些资源是assets/gfx/sample
。我已连接到项目sample.java
我有这段代码:
Textures.java
public class Textures {
private ITexture mSpritesheetTexture;
private TexturePackTextureRegionLibrary mSpritesheetTexturePackTextureRegionLibrary;
private TextureRegion faceTextureRegion;
private TexturePack spritesheetTexturePack;
public Textures(final BaseGameActivity activity, final Engine engine) {
try {
BitmapTextureAtlasTextureRegionFactory.setAssetBasePath("gfx/");
this.spritesheetTexturePack = new TexturePackLoader(activity, "sample/").loadFromAsset(activity, "faces.xml");
this.mSpritesheetTexture = spritesheetTexturePack.getTexture();
this.mSpritesheetTexturePackTextureRegionLibrary = spritesheetTexturePack.getTexturePackTextureRegionLibrary();
this.faceTextureRegion = this.mSpritesheetTexturePackTextureRegionLibrary.get(faces.FACES_ID);
engine.getTextureManager().loadTexture(this.mSpritesheetTexture);
} catch (final TexturePackParseException e) {
Log.e("Error", String.valueOf(e));
}
}
public TextureRegion getT(){
return faceTextureRegion;
}
}
Main.java
...
Textures textures;
...
@Override
public void onLoadResources() {
textures = new Textures(this, getEngine());
}
定义精灵,我在这一行得到错误:
final Sprite spriteS = new Sprite(50, 50, textures.getT());
E/AndroidRuntime(391): Caused by: java.lang.NullPointerException
E/AndroidRuntime(391): at com.web.scene.AboutScene.<init>(AboutScene.java:24)
我的错误是什么?
答案 0 :(得分:2)
我认为问题是您尝试在执行Sprite spriteS
之前初始化onLoadResources()
。
这样的事可能会对你有所帮助:
Textures textures;
Sprite spriteS;
...
@Override
public void onLoadResources() {
textures = new Textures(this, getEngine());
spriteS = new Sprite(50, 50, textures.getT());
}
您也可以将sprite init移动到创建场景的方法。
P.S。它只是示例代码。它并不意味着提供干净或良好的风格。