0
我有我的應用程序一個奇怪的錯誤,我收到NULL異常在下面的代碼,有時(是的,它有時,聽起來很奇怪!)運行時異常的Android
請看看
String appId = preferences.getString(ProjectConstants.IMEI_NO, null);
if (appId == null) {
// Here i am getting exception:
TelephonyManager manager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
appId = manager.getDeviceId();
preferences.edit().putString(ProjectConstants.IMEI_NO, appId);
}
logcat的
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:278)
at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
at java.lang.Thread.run(Thread.java:856) Caused by: java.lang.NullPointerException
at com.homeshop18.service.GSONfunctions.getGSONfromURL(GSONfunctions.java:115)
at com.homeshop18.ui.myorder.MyOrdersFragment$DownloadMyOrders.doInBackground(MyOrdersFragment.java:92)
at com.homeshop18.ui.myorder.MyOrdersFragment$DownloadMyOrders.doInBackground(MyOrdersFragment.java:1)
at android.os.AsyncTask$2.call(AsyncTask.java:264)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) ... 5 more
任何幫助,將不勝感激..:d
你能指定行嗎? – 2013-04-08 07:44:00
logcat會有幫助 – Nezam 2013-04-08 07:45:54
@ umair.ali:TelephonyManager manager =(TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE); – 2013-04-08 07:56:36