與畫廊活動

伊夫問題也隨之而來關於如何使活動畫廊tutoria [Android的開發者] [1]與畫廊活動

[1]：http://developer.android.com/guide/tutorials/views/hello-gallery.html，但我得到了一個錯誤：

02-12 17:54:06.221: ERROR/AndroidRuntime(1330): Uncaught handler: thread main exiting due to uncaught exception 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.addsensor.CameraMap/com.addsensor.CameraMap.GalleryCamera}: java.lang.NullPointerException 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2268) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2284) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at android.app.ActivityThread.access$1800(ActivityThread.java:112) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1692) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at android.os.Handler.dispatchMessage(Handler.java:99) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at android.os.Looper.loop(Looper.java:123) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at android.app.ActivityThread.main(ActivityThread.java:3948) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at java.lang.reflect.Method.invokeNative(Native Method) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at java.lang.reflect.Method.invoke(Method.java:521) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at dalvik.system.NativeStart.main(Native Method) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330): Caused by: java.lang.NullPointerException 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at com.addsensor.CameraMap.GalleryCamera.onCreate(GalleryCamera.java:20) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 
    02-12 17:54:06.301: ERROR/AndroidRuntime(1330):  at 

android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2231)

我[1]

[1]：Android Hello, Gallery tutorial -- "R.styleable cannot be resolved"但我仍然收到錯誤。它是一個簡單的活動，我不知道如何遵循。任何人都知道？¿或如何解決它？¿

感謝

來源

2011-02-16 ki0

您正在嘗試使用引用爲空（例如變量初始化，等..）在CameraMap.GalleryCamera,onCreate()方法，行20

請寄出此方法的代碼（並註明行號20）。

來源

2011-02-16 16:14:55

回答

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