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在我的應用我開始一個服務是這樣的:空指針異常@ stopService()
startService(new Intent(SplashScreen.this, GetContactService.class));
後開始我移動到另一個活動的服務,並從按鈕點擊,我已經開始一個Asyctask這樣的:
class ABC extends AsyncTask<Void, Void, Void>{
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
// my code snippet
}
@Override
protected Void doInBackground(Void... params) {
// TODO Auto-generated method stub
// my code snippet
return null;
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
//stopping the service which I have started earlier
stopService(new Intent(TelaSketchUtil.this, GetContactService.class));
}
}
但在這裏它,直到做背景,但在郵政stopService行執行它運行良好給出了一個空指針異常如:
logcat的:
04-23 15:25:21.705: W/dalvikvm(26710): threadid=1: thread exiting with uncaught exception (group=0x2b547210)
04-23 15:25:21.715: E/AndroidRuntime(26710): FATAL EXCEPTION: main
04-23 15:25:21.715: E/AndroidRuntime(26710): java.lang.NullPointerException
04-23 15:25:21.715: E/AndroidRuntime(26710): at android.content.ContextWrapper.getPackageName(ContextWrapper.java:127)
04-23 15:25:21.715: E/AndroidRuntime(26710): at android.content.ComponentName.<init>(ComponentName.java:75)
04-23 15:25:21.715: E/AndroidRuntime(26710): at android.content.Intent.<init>(Intent.java:3146)
04-23 15:25:21.715: E/AndroidRuntime(26710): at com.telasketch.misc.TelaSketchUtil$GetContactNumber.onPostExecute(TelaSketchUtil.java:225)
04-23 15:25:21.715: E/AndroidRuntime(26710): at com.telasketch.misc.TelaSketchUtil$GetContactNumber.onPostExecute(TelaSketchUtil.java:1)
04-23 15:25:21.715: E/AndroidRuntime(26710): at android.os.AsyncTask.finish(AsyncTask.java:602)
04-23 15:25:21.715: E/AndroidRuntime(26710): at android.os.AsyncTask.access$600(AsyncTask.java:156)
04-23 15:25:21.715: E/AndroidRuntime(26710): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:615)
04-23 15:25:21.715: E/AndroidRuntime(26710): at android.os.Handler.dispatchMessage(Handler.java:99)
04-23 15:25:21.715: E/AndroidRuntime(26710): at android.os.Looper.loop(Looper.java:137)
04-23 15:25:21.715: E/AndroidRuntime(26710): at android.app.ActivityThread.main(ActivityThread.java:4448)
04-23 15:25:21.715: E/AndroidRuntime(26710): at java.lang.reflect.Method.invokeNative(Native Method)
04-23 15:25:21.715: E/AndroidRuntime(26710): at java.lang.reflect.Method.invoke(Method.java:511)
04-23 15:25:21.715: E/AndroidRuntime(26710): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
檢查這個類TelaSketchUtil.java行號:225 ans顯示我們SplashScreen.java代碼... – 2013-04-23 10:20:21
@DhawalSodha是的,這是在停止服務後崩潰方法。但是我的問題依然如此。 – 2013-04-23 10:22:45
檢查服務是否啓動? TelaSketchUtil.java中的行號是225? – 2013-04-23 10:27:44