我有一個用戶的崩潰報告,我不能在我的測試設備上自己重新創建相同的錯誤。奇怪的NullPointerException與日期對象
下面是相關代碼:
for(File f : sessionDirectory.listFiles()){
Date lastModDate = new Date(f.lastModified());
/*Line 53*/ Session ss = new Session(lastModDate.toLocaleString() , f.getName()) ;
sessionArrayList.add(ss) ;
}
和這裏的堆棧跟蹤:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mydomain/com.mydomain.myActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2787)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2803)
at android.app.ActivityThread.access$2300(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2136)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:144)
at android.app.ActivityThread.main(ActivityThread.java:4937)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.mydomain.myActivity.onCreate(myActivity.java:53)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1069)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2751)
是否爲null _f_可能? – extraneon 2011-02-12 13:06:52
第53行是:`Session ss = new Session(lastModDate.toLocaleString(),f.getName());` – dirhem 2011-02-12 13:24:55