首次发布海报，Android编程新手。使用Eclipse classic，已经加载了android SDK和API。创建了一个hello world app，以及后面的文本发送应用程序（android dev site）。现在正在使用Jimmaru（http://jimmaru.wordpress.com/2011/09/28/andengine-simple-android-game-tutorial/）教程（GLES1）进行游戏，使用AndEngine（GLES1尽我所能告诉我，当我查找时没有“simpleBaseGameActivity”的超类。我已经让空白屏幕显示正常，但添加玩家精灵的步骤会导致应用程序执行/加载时关闭。< / p>
这是我的One Class（SimpleGame）
package com.example.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.sprite.Sprite;
import org.anddev.andengine.entity.util.FPSLogger;
import org.anddev.andengine.opengl.texture.TextureOptions;
import org.anddev.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlas;
import org.anddev.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlasTextureRegionFactory;
import org.anddev.andengine.opengl.texture.region.TextureRegion;
import org.anddev.andengine.ui.activity.BaseGameActivity;
import android.view.Display;
public class SimpleGame extends BaseGameActivity {
// initiates view
private Camera mCamera;
// Main Scene
private Scene mMainScene;
private Sprite player;
// Textures
private BitmapTextureAtlas mBitmapTextureAtlas;
private TextureRegion mPlayerTextureRegion;
@Override
public Engine onLoadEngine() {
final Display display = getWindowManager().getDefaultDisplay();
int cameraWidth = display.getWidth();
int cameraHeight = display.getHeight();
mCamera = new Camera(0, 0, cameraWidth, cameraHeight);
return new Engine(new EngineOptions(true, ScreenOrientation.LANDSCAPE,
new RatioResolutionPolicy(cameraWidth, cameraHeight), mCamera));
}
@Override
public void onLoadResources() {
// This places player character on screen, file is in
// assets/gfx/Player.png
mBitmapTextureAtlas = new BitmapTextureAtlas(512, 512,
TextureOptions.BILINEAR_PREMULTIPLYALPHA);
BitmapTextureAtlasTextureRegionFactory.setAssetBasePath("gfx/");
mPlayerTextureRegion = BitmapTextureAtlasTextureRegionFactory
.createFromAsset(this.mBitmapTextureAtlas, this, "Player.png",
0, 0);
mEngine.getTextureManager().loadTexture(mBitmapTextureAtlas);
}
@Override
public Scene onLoadScene() {
mEngine.registerUpdateHandler(new FPSLogger());
mMainScene = new Scene();
mMainScene
.setBackground(new ColorBackground(0.09804f, 0.6274f, 0.8784f));
mMainScene.attachChild(player);
final int PlayerX = this.mPlayerTextureRegion.getWidth() / 2;
final int PlayerY = (int) ((mCamera.getHeight() - mPlayerTextureRegion
.getHeight()) / 2);
player = new Sprite(PlayerX, PlayerY, mPlayerTextureRegion);
return mMainScene;
}
@Override
public void onLoadComplete() {
// TODO Auto-generated method stub
}
}
这是我的AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.game"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="4" android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.CAMERA" />
<application android:label="@string/app_name"
android:icon="@drawable/ic_launcher"
android:theme="@style/AppTheme">
<activity android:name="SimpleGame">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
这是我的LogCat文件
08-21 14:14:50.116: D/dalvikvm(12704): GC_EXTERNAL_ALLOC freed 76K, 50% free 2737K/5379K, external 0K/0K, paused 33ms
08-21 14:14:50.156: D/AndEngine(12704): UpdateThread interrupted. Don't worry - this Exception is most likely expected!
08-21 14:14:50.156: D/AndEngine(12704): java.lang.InterruptedException
08-21 14:14:50.156: D/AndEngine(12704): at java.lang.Object.wait(Native Method)
08-21 14:14:50.156: D/AndEngine(12704): at java.lang.Object.wait(Object.java:358)
08-21 14:14:50.156: D/AndEngine(12704): at org.anddev.andengine.engine.Engine$State.waitUntilCanUpdate(Engine.java:722)
08-21 14:14:50.156: D/AndEngine(12704): at org.anddev.andengine.engine.Engine.yieldDraw(Engine.java:472)
08-21 14:14:50.156: D/AndEngine(12704): at org.anddev.andengine.engine.Engine.onTickUpdate(Engine.java:463)
08-21 14:14:50.156: D/AndEngine(12704): at org.anddev.andengine.engine.Engine$UpdateThread.run(Engine.java:685)
08-21 14:14:50.316: D/AndroidRuntime(12704): Shutting down VM
08-21 14:14:50.316: W/dalvikvm(12704): threadid=1: thread exiting with uncaught exception (group=0x401cc568)
08-21 14:14:50.316: E/AndroidRuntime(12704): FATAL EXCEPTION: main
08-21 14:14:50.316: E/AndroidRuntime(12704): java.lang.NullPointerException
08-21 14:14:50.316: E/AndroidRuntime(12704): at org.anddev.andengine.entity.Entity.attachChild(Entity.java:482)
08-21 14:14:50.316: E/AndroidRuntime(12704): at com.example.game.SimpleGame.onLoadScene(SimpleGame.java:71)
08-21 14:14:50.316: E/AndroidRuntime(12704): at org.anddev.andengine.ui.activity.BaseGameActivity.doResume(BaseGameActivity.java:169)
08-21 14:14:50.316: E/AndroidRuntime(12704): at org.anddev.andengine.ui.activity.BaseGameActivity.onWindowFocusChanged(BaseGameActivity.java:85)
08-21 14:14:50.316: E/AndroidRuntime(12704): at com.android.internal.policy.impl.PhoneWindow$DecorView.onWindowFocusChanged(PhoneWindow.java:2106)
08-21 14:14:50.316: E/AndroidRuntime(12704): at android.view.View.dispatchWindowFocusChanged(View.java:3925)
08-21 14:14:50.316: E/AndroidRuntime(12704): at android.view.ViewGroup.dispatchWindowFocusChanged(ViewGroup.java:665)
08-21 14:14:50.316: E/AndroidRuntime(12704): at android.view.ViewRoot.handleMessage(ViewRoot.java:1982)
08-21 14:14:50.316: E/AndroidRuntime(12704): at android.os.Handler.dispatchMessage(Handler.java:99)
08-21 14:14:50.316: E/AndroidRuntime(12704): at android.os.Looper.loop(Looper.java:130)
08-21 14:14:50.316: E/AndroidRuntime(12704): at android.app.ActivityThread.main(ActivityThread.java:3703)
08-21 14:14:50.316: E/AndroidRuntime(12704): at java.lang.reflect.Method.invokeNative(Native Method)
08-21 14:14:50.316: E/AndroidRuntime(12704): at java.lang.reflect.Method.invoke(Method.java:507)
08-21 14:14:50.316: E/AndroidRuntime(12704): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
08-21 14:14:50.316: E/AndroidRuntime(12704): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
08-21 14:14:50.316: E/AndroidRuntime(12704): at dalvik.system.NativeStart.main(Native Method)
08-21 14:14:54.190: I/Process(12704): Sending signal. PID: 12704 SIG: 9
非常感谢任何帮助，谢谢。
答案 0 :(得分：0)
移动此行
mMainScene.attachChild(player);
到这两行之间的一点
player = new Sprite(PlayerX, PlayerY, mPlayerTextureRegion);
return mMainScene;