Java AndEngine-无法实例化活动
我是Android开发新手,在使用安卓引擎时遇到了一个问题。我试图运行一个空应用程序,但出现如下运行时错误:Java AndEngine-无法实例化活动,java,android,android-manifest,andengine,Java,Android,Android Manifest,Andengine,我是Android开发新手,在使用安卓引擎时遇到了一个问题。我试图运行一个空应用程序,但出现如下运行时错误: 04-01 21:56:16.326: W/dalvikvm(280): Unable to resolve superclass of Lcom/MyApps/TestApp/TestAppActivity; (31) 04-01 21:56:16.326: W/dalvikvm(280): Link of class 'Lcom/MyApps/TestApp/TestAppActiv
04-01 21:56:16.326: W/dalvikvm(280): Unable to resolve superclass of Lcom/MyApps/TestApp/TestAppActivity; (31)
04-01 21:56:16.326: W/dalvikvm(280): Link of class 'Lcom/MyApps/TestApp/TestAppActivity;' failed
04-01 21:56:16.336: D/AndroidRuntime(280): Shutting down VM
04-01 21:56:16.336: W/dalvikvm(280): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
04-01 21:56:16.376: E/AndroidRuntime(280): FATAL EXCEPTION: main
04-01 21:56:16.376: E/AndroidRuntime(280): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.MyApps.TestApp/com.MyApps.TestApp.TestAppActivity}: java.lang.ClassNotFoundException: com.MyApps.TestApp.TestAppActivity in loader dalvik.system.PathClassLoader[/data/app/com.MyApps.TestApp-1.apk]
04-01 21:56:16.376: E/AndroidRuntime(280): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585)
04-01 21:56:16.376: E/AndroidRuntime(280): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-01 21:56:16.376: E/AndroidRuntime(280): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-01 21:56:16.376: E/AndroidRuntime(280): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-01 21:56:16.376: E/AndroidRuntime(280): at android.os.Handler.dispatchMessage(Handler.java:99)
04-01 21:56:16.376: E/AndroidRuntime(280): at android.os.Looper.loop(Looper.java:123)
04-01 21:56:16.376: E/AndroidRuntime(280): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-01 21:56:16.376: E/AndroidRuntime(280): at java.lang.reflect.Method.invokeNative(Native Method)
04-01 21:56:16.376: E/AndroidRuntime(280): at java.lang.reflect.Method.invoke(Method.java:521)
04-01 21:56:16.376: E/AndroidRuntime(280): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-01 21:56:16.376: E/AndroidRuntime(280): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-01 21:56:16.376: E/AndroidRuntime(280): at dalvik.system.NativeStart.main(Native Method)
04-01 21:56:16.376: E/AndroidRuntime(280): Caused by: java.lang.ClassNotFoundException: com.MyApps.TestApp.TestAppActivity in loader dalvik.system.PathClassLoader[/data/app/com.MyApps.TestApp-1.apk]
04-01 21:56:16.376: E/AndroidRuntime(280): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
04-01 21:56:16.376: E/AndroidRuntime(280): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
04-01 21:56:16.376: E/AndroidRuntime(280): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
04-01 21:56:16.376: E/AndroidRuntime(280): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
04-01 21:56:16.376: E/AndroidRuntime(280): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
04-01 21:56:16.376: E/AndroidRuntime(280): ... 11 more
使用的清单:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.MyApps.TestApp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".TestAppActivity"
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>
</manifest>
我尝试将整个包的名称改为.TestAppActivity,但没有任何运气。
然而,当我从Activity扩展TestAppActivity而不是BaseGameActivity时,它起了作用
感谢您的帮助,
Sami错误
无法解析Lcom/MyApps/TestApp/TestAppActivity的超类
,并且当您从活动
继承时它会工作,这表明您的APK中没有包含AndEngine库-因此在运行时找不到BaseGameActivity
确保AndEngine依赖项位于Android项目的libs
目录中;不仅仅是添加到Eclipse类路径
事实上,如果你有最新的Android Eclipse插件,只要你把它们放在
libs
中,任何依赖项都会自动包含在你的APK中。我收到了一条几乎相同的错误消息,我的问题是我安装了错误的JDK版本,当我下载并安装JDK6而不是7时,它工作正常。如果这可以避免任何人经历我刚刚经历的噩梦,我将把它留在这里。非常感谢。问题解决了。当我发现同样的问题时,我只是在将ADT更新到最新版本后才将其添加到ClassPath中。我在lib文件夹中有andengine.jar,添加到引用的库中,到目前为止它仍然有效。现在,我必须将lib更改为libs。他们真的必须每5分钟发布一次新的SDK吗?他们不能创建一个稳定的环境吗?就我个人而言,我发现只引用AndEngine项目要比将.jar文件复制粘贴到libs目录容易得多。这是通过Properties->Android完成的,然后将AndEngine项目作为库引用。