java.lang.RuntimeException：无法实例化活动ComponentInfo - Android

我真的很困惑。之后，我试图改变从android.app我的包android.support.v4，我的应用程序崩溃，并投掷但下列情况除外：java.lang.RuntimeException：无法实例化活动ComponentInfo - Android

08-31 20:45:18.652: E/AndroidRuntime(1429): FATAL EXCEPTION: main 
08-31 20:45:18.652: E/AndroidRuntime(1429): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.k2evil.porschejournal/com.k2evil.porschejournal.FirstScreen}: java.lang.ClassNotFoundException: Didn't find class "com.k2evil.porschejournal.FirstScreen" on path: DexPathList[[zip file "/data/app/com.k2evil.porschejournal-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.k2evil.porschejournal-2, /system/lib]] 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2137) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at android.app.ActivityThread.access$600(ActivityThread.java:141) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at android.os.Handler.dispatchMessage(Handler.java:99) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at android.os.Looper.loop(Looper.java:137) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at android.app.ActivityThread.main(ActivityThread.java:5103) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at java.lang.reflect.Method.invokeNative(Native Method) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at java.lang.reflect.Method.invoke(Method.java:525) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at dalvik.system.NativeStart.main(Native Method) 
08-31 20:45:18.652: E/AndroidRuntime(1429): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.k2evil.porschejournal.FirstScreen" on path: DexPathList[[zip file "/data/app/com.k2evil.porschejournal-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.k2evil.porschejournal-2, /system/lib]] 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at android.app.Instrumentation.newActivity(Instrumentation.java:1061) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2128) 
08-31 20:45:18.652: E/AndroidRuntime(1429):  ... 11 more

，这是我的Android清单：

<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.k2evil.porschejournal" 
    android:versionCode="1" 
    android:versionName="1.0" > 

    <uses-sdk 
     android:minSdkVersion="14" 
     android:targetSdkVersion="19" /> 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme" > 
     <activity android:name="com.k2evil.porschejournal.FirstScreen" android:theme="@style/AppTheme"> 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN"/> 
       <category android:name="android.intent.category.LAUNCHER"/> 
      </intent-filter> 
     </activity> 
    </application> 

</manifest>

我试着干净的项目，并重命名应用程序包名称。但它不起作用。

来源

2014-08-31 K2evil

在哪个软件包是你的活动？ – 2014-08-31 20:58:23

如果你的意思是活动课，它在“com.k2evil.porschejournal” – K2evil 2014-08-31 21:07:40

它可能是一个副本：http://stackoverflow.com/questions/16596969/libraries-do-not-get-added-to-apk-升级至adt-22 ？ – AZOM 2016-07-15 11:56:32

这只是一个日食错误...关闭并重新打开日食:)

来源

2016-12-11 13:05:01 K2evil

java.lang.RuntimeException：无法实例化活动ComponentInfo - Android

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