Question

我是Android游戏开发的新手，我从GitHub下载了AndEngine源码和其他扩展，并从andengine的bin创建了一个新项目jar，用SimpleGameActivity扩展了我的主要活动并覆盖了抽象方法......但是当我正试图运行这个项目，它说的是致命的例外...... BLA BLA ....我被困在这里最后3小时......不知道该怎么办？

这是我的主要活动代码

import org.andengine.engine.camera.Camera;
import org.andengine.engine.options.EngineOptions;
import org.andengine.engine.options.ScreenOrientation;
import org.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy;
import org.andengine.entity.scene.Scene;
import org.andengine.entity.scene.background.Background;
import org.andengine.entity.util.FPSLogger;

import org.andengine.ui.activity.SimpleBaseGameActivity;


public class MainActivity extends  SimpleBaseGameActivity {

    // ===========================================================
    // Constants
    // ===========================================================

    protected static final int CAMERA_WIDTH = 720;
    protected static final int CAMERA_HEIGHT = 480;

    private Scene mScene;

    @Override
    public EngineOptions onCreateEngineOptions() {
        final Camera camera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);
        return new EngineOptions(true, ScreenOrientation.LANDSCAPE_FIXED, new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT), camera);
    }

    @Override
    public void onCreateResources() {
    }

    @Override
    public Scene onCreateScene() {
        this.mEngine.registerUpdateHandler(new FPSLogger());

        this.mScene = new Scene();
        this.mScene.setBackground(new Background(0, 0, 0));

        return this.mScene;
    }


}

和清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.test"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="9"
        android:targetSdkVersion="15" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <uses-feature android:glEsVersion="0x00020000" android:required="true"/>
    <uses-feature android:name="android.hardware.touchscreen" android:required="false"/>

    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
    <uses-permission android:name="android.permission.BLUETOOTH"/>
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WAKE_LOCK"/>
    <uses-permission android:name="android.permission.CAMERA"/>
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
    <uses-permission android:name="android.permission.VIBRATE"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

</manifest>

和Log Cat

12-12 17:26:00.759: W/dalvikvm(20868): Unable to resolve superclass of Lcom/example/test/MainActivity; (558)
12-12 17:26:00.759: W/dalvikvm(20868): Link of class 'Lcom/example/test/MainActivity;' failed
12-12 17:26:00.759: D/AndroidRuntime(20868): Shutting down VM
12-12 17:26:00.759: W/dalvikvm(20868): threadid=1: thread exiting with uncaught exception (group=0x40018578)
12-12 17:26:00.799: E/AndroidRuntime(20868): FATAL EXCEPTION: main
12-12 17:26:00.799: E/AndroidRuntime(20868): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.test/com.example.test.MainActivity}: java.lang.ClassNotFoundException: com.example.test.MainActivity in loader dalvik.system.PathClassLoader[/data/app/com.example.test-1.apk]
12-12 17:26:00.799: E/AndroidRuntime(20868):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1573)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at android.app.ActivityThread.access$1500(ActivityThread.java:117)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at android.os.Handler.dispatchMessage(Handler.java:99)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at android.os.Looper.loop(Looper.java:130)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at android.app.ActivityThread.main(ActivityThread.java:3687)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at java.lang.reflect.Method.invokeNative(Native Method)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at java.lang.reflect.Method.invoke(Method.java:507)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at dalvik.system.NativeStart.main(Native Method)
12-12 17:26:00.799: E/AndroidRuntime(20868): Caused by: java.lang.ClassNotFoundException: com.example.test.MainActivity in loader dalvik.system.PathClassLoader[/data/app/com.example.test-1.apk]
12-12 17:26:00.799: E/AndroidRuntime(20868):    at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
12-12 17:26:00.799: E/AndroidRuntime(20868):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1565)
12-12 17:26:00.799: E/AndroidRuntime(20868):    ... 11 more

我正试图在三星Galaxy pop中运行它

我找到了这个教程 http://www.youtube.com/watch?v=zVIZSKP3tR8

最后我得到了解决方案，我不必更改源代码......

NoClassDefFoundError - Eclipse and Android

Answer 1

确保andengine.jar不仅列在“Java Build Path”＆gt;下面。 “库”但导出：“Java构建路径”＆gt; “订单和出口”。

或如果不能解决问题，您可以随时将整个AndEngine项目与您的项目链接起来。只需将AndEngine项目导入Eclipse（如果还没有完成），而不是复制andengine.jar：

选择“属性”＆gt; “ android ”并在“图书馆”下标记为“是图书馆”
返回项目中选择“属性”＆gt; “J * ava Build Path *”＆gt; “项目”，然后“添加” - ＆gt; 您在工作区中看到所有项目，请选择AndEngine
切换到“订单和导出”标签，并确保AndEngine也会导出。
选择“属性”＆gt; “ android ”并在“库”下添加“ AndEngine ”

这应该可以解决问题（至少它对我有用）我很抱歉，如果我可能搞砸了步骤的顺序。

Answer 2

更改为

this.mText = new Text(50, 40, this.mFont, "", 1000, new TextOptions(AutoWrap.LETTERS, AUTOWRAP_WIDTH, HorizontalAlign.CENTER, Text.LEADING_DEFAULT), vertexBufferObjectManager);

Answer 3

您的代码在我的Android Studio上运行，看起来很不错，但您必须清理并重建项目。

试图运行简单的AndEngine示例，但显示以下错误？

3 个答案: