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今天我開始研究AndEngine並且很早就面臨問題。嘗試了一些示例代碼來將背景設置爲某種顏色，並拋出ClassNotFoundException。試圖清理項目，改變工作區。需要一些幫助......AndEngine ClassNotFoundException
這是我的課
package com.Try4;
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.util.FPSLogger;
import org.anddev.andengine.ui.activity.BaseGameActivity;
import android.view.Display;
public class Try4Activity extends BaseGameActivity{
private Camera mCamera;
private Scene mMainScene;
@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() {
}
@Override
public Scene onLoadScene() {
mEngine.registerUpdateHandler(new FPSLogger());
mMainScene = new Scene();
mMainScene.setBackground(new ColorBackground(0.09804f, 0.6274f, 0.8784f));
return mMainScene;
}
@Override
public void onLoadComplete() {
}
}
這裏是我的manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.Try4"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="7" />
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.CAMERA"/>
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".Try4Activity"
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>
堆棧跟蹤
05-20 07:28:56.015: W/dalvikvm(351): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
05-20 07:28:56.045: E/AndroidRuntime(351): Uncaught handler: thread main exiting due to uncaught exception
05-20 07:28:56.065: E/AndroidRuntime(351): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.Try4/com.Try4.Try4Activity}: java.lang.ClassNotFoundException: com.Try4.Try4Activity in loader [email protected]
05-20 07:28:56.065: E/AndroidRuntime(351): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417)
05-20 07:28:56.065: E/AndroidRuntime(351): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
05-20 07:28:56.065: E/AndroidRuntime(351): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
05-20 07:28:56.065: E/AndroidRuntime(351): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
05-20 07:28:56.065: E/AndroidRuntime(351): at android.os.Handler.dispatchMessage(Handler.java:99)
05-20 07:28:56.065: E/AndroidRuntime(351): at android.os.Looper.loop(Looper.java:123)
05-20 07:28:56.065: E/AndroidRuntime(351): at android.app.ActivityThread.main(ActivityThread.java:4363)
05-20 07:28:56.065: E/AndroidRuntime(351): at java.lang.reflect.Method.invokeNative(Native Method)
05-20 07:28:56.065: E/AndroidRuntime(351): at java.lang.reflect.Method.invoke(Method.java:521)
05-20 07:28:56.065: E/AndroidRuntime(351): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
05-20 07:28:56.065: E/AndroidRuntime(351): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
05-20 07:28:56.065: E/AndroidRuntime(351): at dalvik.system.NativeStart.main(Native Method)
05-20 07:28:56.065: E/AndroidRuntime(351): Caused by: java.lang.ClassNotFoundException: com.Try4.Try4Activity in loader [email protected]
05-20 07:28:56.065: E/AndroidRuntime(351): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
05-20 07:28:56.065: E/AndroidRuntime(351): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
05-20 07:28:56.065: E/AndroidRuntime(351): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
05-20 07:28:56.065: E/AndroidRuntime(351): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
05-20 07:28:56.065: E/AndroidRuntime(351): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2409)
05-20 07:28:56.065: E/AndroidRuntime(351): ... 11 more
05-20 07:28:56.086: I/dalvikvm(351): threadid=7: reacting to signal 3
05-20 07:28:56.106: I/dalvikvm(351): Wrote stack trace to '/data/anr/traces.txt'
請添加堆棧跟蹤。 – rekire
@rekire添加了它的伴侶。 – dnivra
您是否嘗試「清潔」該項目？ –