我把一个源码的图片替换成和原图不一样尺寸的后，不显示图片啦？

Question

哪位大神知道怎么回事？
源代码的一张图片被我替换成尺寸不一样的图片后，图片就不显示了，一片黑，
替换成和原图一样尺寸的可以显示？

Answer 1

package me.trifunovic.spaceassault.game;import org.anddev.andengine.engine.Engine;
import org.anddev.andengine.engine.camera.Camera;
import org.anddev.andengine.engine.options.EngineOptions;
import org.anddev.andengine.engine.options.EngineOptions.ScreenOrientation;
import org.anddev.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy;
import org.anddev.andengine.entity.scene.Scene;
import org.anddev.andengine.entity.scene.background.ColorBackground;
import org.anddev.andengine.entity.shape.IShape;
import org.anddev.andengine.entity.shape.modifier.AlphaModifier;
import org.anddev.andengine.entity.shape.modifier.DelayModifier;
import org.anddev.andengine.entity.shape.modifier.IShapeModifier;
import org.anddev.andengine.entity.shape.modifier.SequenceModifier;
import org.anddev.andengine.entity.shape.modifier.IShapeModifier.IShapeModifierListener;
import org.anddev.andengine.entity.sprite.Sprite;
import org.anddev.andengine.opengl.texture.Texture;
import org.anddev.andengine.opengl.texture.TextureOptions;
import org.anddev.andengine.opengl.texture.region.TextureRegion;
import org.anddev.andengine.opengl.texture.region.TextureRegionFactory;
import org.anddev.andengine.opengl.texture.source.ITextureSource;
import org.anddev.andengine.ui.activity.BaseSplashActivity;import android.app.Activity;
import android.content.Intent;public class GameSplashActivity extends BaseSplashActivity {        private static final int CAMERA_WIDTH = 480;
        private static final int CAMERA_HEIGHT = 800;
        
        private Camera camera;
        private Texture texture;
        private TextureRegion pictureRegion;
        
        @Override
        public Engine onLoadEngine() {
     this.camera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);
     final EngineOptions engineOptions = new EngineOptions(true,
     ScreenOrientation.PORTRAIT, new RatioResolutionPolicy(
     CAMERA_WIDTH, CAMERA_HEIGHT), this.camera);
     return new Engine(engineOptions);
        }        @Override
        public void onLoadResources() {
                texture = new Texture(512, 256, TextureOptions.BILINEAR);
                TextureRegionFactory.setAssetBasePath("img/");
                pictureRegion = TextureRegionFactory.createFromAsset(this.texture, this, "wenzi.png", 0, 0);
                mEngine.getTextureManager().loadTexture(this.texture);
        }        @Override
        public Scene onLoadScene() {                final Scene scene = new Scene(1);
                scene.setBackground(new ColorBackground(0, 0, 0));                final int x = (CAMERA_WIDTH - this.pictureRegion.getWidth()) / 2;
                final int y = (CAMERA_HEIGHT - this.pictureRegion.getHeight()) / 2;                final Sprite picture = new Sprite(x, y, this.pictureRegion);
                picture.setAlpha(0);
                scene.getTopLayer().addEntity(picture);
                
                picture.addShapeModifier(new SequenceModifier(
                 new IShapeModifierListener() { @Override
public void onModifierFinished(IShapeModifier pShapeModifier, IShape pShape) {

texture.clearTextureSources();
            TextureRegionFactory.createFromAsset(texture, GameSplashActivity.this, "tu.png", 0, 0); picture.addShapeModifier(new SequenceModifier(
                 new IShapeModifierListener() { @Override
public void onModifierFinished(
IShapeModifier pShapeModifier,
IShape pShape) {

Intent menu = new Intent(GameSplashActivity.this, MenuActivity.class);
startActivity(menu);
finish();
}
},
                 new DelayModifier(1),
                 new AlphaModifier(0.5f, 0, 1),
                 new DelayModifier(2),
                 new AlphaModifier(0.5f, 1, 0),
new DelayModifier(0.5f)
                ));
}
},
new DelayModifier(1),
                 new AlphaModifier(0.5f, 0, 1),
                 new DelayModifier(2),
                 new AlphaModifier(0.5f, 1, 0)
                ));                return scene;
        }
        
        @Override
        public void onLoadComplete() {} @Override
protected ScreenOrientation getScreenOrientation() {
return null;
} @Override
protected ITextureSource onGetSplashTextureSource() {
return null;
} @Override
protected float getSplashDuration() {
return 0;
} @Override
protected Class<? extends Activity> getFollowUpActivity() {
return null;
}
}

Answer 2

 texture = new Texture(512, 256, TextureOptions.BILINEAR);
这句决定了能显示的贴图大小，你重新建一个Texture对象估计就o了

Answer 3

camera width 和 hieght 应该不关贴图事啦