我在設備上運行時遇到此錯誤。我一直在瀏覽這個問題,我很確定我沒有提到過的問題。我的兩個活動都在AndroidManifest中聲明,意圖過濾器在那裏。我沒有任何庫(除了v4支持庫,但聲明它不會改變問題)。我嘗試在我的清單carpedujourproductions.quickpronote.MainActivity
中更換.MainActivity
,但仍然沒有運氣。我正在運行Android Studio 0.2.5,所以我無法找到如何解決與Java構建路徑/訂單和導出有關的潛在問題java.lang.RuntimeException:無法實例化活動ComponentInfo/java.lang.ClassNotFoundException
我不禁注意到我的MainActivity圖標在樹中有一個灰色十字在左上角。
的logcat:
E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{carpedujourproductions.quickpronote/carpedujourproductions.quickpronote.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "carpedujourproductions.quickpronote.MainActivity" on path: DexPathList[[zip file "/data/app/carpedujourproductions.quickpronote-2.apk"],nativeLibraryDirectories=[/data/app-lib/carpedujourproductions.quickpronote-2, /vendor/lib, /system/lib]]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2157)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2281)
at android.app.ActivityThread.access$600(ActivityThread.java:148)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1263)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5124)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:110)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "carpedujourproductions.quickpronote.MainActivity" on path: DexPathList[[zip file "/data/app/carpedujourproductions.quickpronote-2.apk"],nativeLibraryDirectories=[/data/app-lib/carpedujourproductions.quickpronote-2, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
... 12 more
隨時通過了AndroidManifest,MainActivity.java,FirstRun.java代碼here瀏覽等
刷新項目文件時,它可能是Eclipse構建問題。請參閱[這裏](http://stackoverflow.com/a/20421764/2554058)瞭解可能的解決方案。 – user2554058