java - .apk 上传成功，但启动 Intent 导致 ClassNotFoundException com.game.demo.helloworld

Question

我使用 Cocos2dx 库设置 Eclipse IDE。我正在尝试在 cocos2dx 库中设置并运行 helloworld 项目，但在 helloworld.apk 成功上传到模拟器后，我在 LogCat 中遇到此错误。

我使用的是 SDK 17Eclipse 版本:v22.0.1-685705

我在 stackoverflow 上浏览了近 4-5 个类似的帖子，但已经尝试了所有方法，但不确定如何解决这个问题。

这是 LogCat 条目:

06-26 06:30:27.411: E/AndroidRuntime(781): FATAL EXCEPTION: main
06-26 06:30:27.411: E/AndroidRuntime(781): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.game.demo/com.game.demo.helloworld}: java.lang.ClassNotFoundException: Didn't find class "com.game.demo.helloworld" on path: /data/app/com.game.demo-2.apk
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.os.Handler.dispatchMessage(Handler.java:99)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.os.Looper.loop(Looper.java:137)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.ActivityThread.main(ActivityThread.java:5041)
06-26 06:30:27.411: E/AndroidRuntime(781):  at java.lang.reflect.Method.invokeNative(Native Method)
06-26 06:30:27.411: E/AndroidRuntime(781):  at java.lang.reflect.Method.invoke(Method.java:511)
06-26 06:30:27.411: E/AndroidRuntime(781):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-26 06:30:27.411: E/AndroidRuntime(781):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-26 06:30:27.411: E/AndroidRuntime(781):  at dalvik.system.NativeStart.main(Native Method)
06-26 06:30:27.411: E/AndroidRuntime(781): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.game.demo.helloworld" on path: /data/app/com.game.demo-2.apk
06-26 06:30:27.411: E/AndroidRuntime(781):  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
06-26 06:30:27.411: E/AndroidRuntime(781):  at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
06-26 06:30:27.411: E/AndroidRuntime(781):  at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
06-26 06:30:27.411: E/AndroidRuntime(781):  ... 11 more
06-26 06:30:27.411: E/AndroidRuntime(781): FATAL EXCEPTION: main
06-26 06:30:27.411: E/AndroidRuntime(781): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.game.demo/com.game.demo.helloworld}: java.lang.ClassNotFoundException: Didn't find class "com.game.demo.helloworld" on path: /data/app/com.game.demo-2.apk
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.os.Handler.dispatchMessage(Handler.java:99)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.os.Looper.loop(Looper.java:137)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.ActivityThread.main(ActivityThread.java:5041)
06-26 06:30:27.411: E/AndroidRuntime(781):  at java.lang.reflect.Method.invokeNative(Native Method)
06-26 06:30:27.411: E/AndroidRuntime(781):  at java.lang.reflect.Method.invoke(Method.java:511)
06-26 06:30:27.411: E/AndroidRuntime(781):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-26 06:30:27.411: E/AndroidRuntime(781):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-26 06:30:27.411: E/AndroidRuntime(781):  at dalvik.system.NativeStart.main(Native Method)
06-26 06:30:27.411: E/AndroidRuntime(781): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.game.demo.helloworld" on path: /data/app/com.game.demo-2.apk
06-26 06:30:27.411: E/AndroidRuntime(781):  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
06-26 06:30:27.411: E/AndroidRuntime(781):  at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
06-26 06:30:27.411: E/AndroidRuntime(781):  at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
06-26 06:30:27.411: E/AndroidRuntime(781):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
06-26 06:30:27.411: E/AndroidRuntime(781):  ... 11 more

这是我的 AndroidManifest.xml 文件:

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

    <uses-sdk android:minSdkVersion="8"/>
    <uses-feature android:glEsVersion="0x00020000" />

    <application android:label="@string/app_name"
        android:icon="@drawable/icon">

        <activity android:name=".helloworld"
                  android:label="@string/app_name"
                  android:screenOrientation="landscape"
                  android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
                  android:configChanges="orientation">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <supports-screens android:largeScreens="true"
                      android:smallScreens="true"
                      android:anyDensity="true"
                      android:normalScreens="true"/>
</manifest> 

Answer 1

您的 list 包声明为 com.game.demo，但您的文件位于 com.game.demo.helloworld 中。

尝试:

<activity android:name="com.game.demo.helloworld.helloworld"