作者zoeysui (zoeysui)
看板AndroidDev
標題[問題] Android Developer的範例無法執行?
時間Wed Jun 26 21:11:50 2013
想學習如何實作滑動換頁，於是到android官方網站找到了教學及範例
http://developer.android.com/training/implementing-navigation/lateral.html
但是這個教學提供的sample project我下載下來之後執行，卻直接閃退
logcat的log訊息如下
06-26 21:04:50.684: W/dalvikvm(32004): Unable to resolve superclass of
Lcom/example/android/effectivenavigation/MainActivity; (10)
06-26 21:04:50.684: W/dalvikvm(32004): Link of class
'Lcom/example/android/effectivenavigation/MainActivity;' failed
06-26 21:04:50.684: W/dalvikvm(32004): threadid=1: thread exiting with
uncaught exception (group=0x40ef12d0)
06-26 21:04:50.684: E/AndroidRuntime(32004): FATAL EXCEPTION: main
06-26 21:04:50.684: E/AndroidRuntime(32004): java.lang.RuntimeException:
Unable to instantiate activity
ComponentInfo{com.example.android.effectivenavigation/com.example.android.effectivenavigation.MainActivity}:
java.lang.ClassNotFoundException:
com.example.android.effectivenavigation.MainActivity
06-26 21:04:50.684: E/AndroidRuntime(32004): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2271)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2391)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
android.app.ActivityThread.access$600(ActivityThread.java:151)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1335)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
android.os.Handler.dispatchMessage(Handler.java:99)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
android.os.Looper.loop(Looper.java:155)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
android.app.ActivityThread.main(ActivityThread.java:5493)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
java.lang.reflect.Method.invokeNative(Native Method)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
java.lang.reflect.Method.invoke(Method.java:511)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:795)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
dalvik.system.NativeStart.main(Native Method)
06-26 21:04:50.684: E/AndroidRuntime(32004): Caused by:
java.lang.ClassNotFoundException:
com.example.android.effectivenavigation.MainActivity
06-26 21:04:50.684: E/AndroidRuntime(32004): at
dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
java.lang.ClassLoader.loadClass(ClassLoader.java:501)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
java.lang.ClassLoader.loadClass(ClassLoader.java:461)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
android.app.Instrumentation.newActivity(Instrumentation.java:1069)
06-26 21:04:50.684: E/AndroidRuntime(32004): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2262)
06-26 21:04:50.684: E/AndroidRuntime(32004): ... 11 more
照理說官方的sample應該不會出錯吧，是我哪裡弄錯了嗎??
我的eclipse環境應該沒問題，我執行android bmi範例程式，以及我自己寫到一半的程式
都可以正常運行，我是直接連接手機執行(one x)，請問各位板友有何解? 謝謝~!
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◆ From: 1.175.232.225
1F：→ corrupt003:不是已經說找不到 class 了嗎 06/26 22:31
2F：→ zoeysui:但是那範例裡面確實是有MainActivity啊@@ 06/26 22:39
4F：→ zoeysui:太感謝了!! 06/27 00:23