/**
* A placeholder fragment containing a simple view.
*/
public class FragmentOS extends Fragment{
private Dialog dialog;
public FragmentOS() {}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_os, container, false);
return rootView;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
new ListaOS1(getActivity().getApplicationContext()).execute();
}
public class ListaOS1 extends AsyncTask<Void, Void, ArrayList<OS>>{
private Context context;
private LinearLayout linlaHeaderProgress;
private ArrayList<OS> array;
public ListaOS1(Context context)
{
this.context = context;
}
@Override
protected ArrayList<OS> doInBackground(Void... params) {
array = new ArrayList<OS>();
array = new OSController().listarTodos();
return array;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
linlaHeaderProgress = (LinearLayout) getActivity().findViewById(R.id.linlaHeaderProgress);
linlaHeaderProgress.setVisibility(View.VISIBLE);
}
protected void onPostExecute(ArrayList<OS> result) {
super.onPostExecute(result);
if(array.size() > 0){
BaseAdapterOS ad = new BaseAdapterOS(getActivity(),array);
ListView lv = (ListView) getActivity().findViewById(R.id.listViewOS);
lv.setAdapter(ad);
}
if(linlaHeaderProgress.isShown() == true)
linlaHeaderProgress.setVisibility(View.GONE);
}
}
@Override
public void onResume(){
super.onResume();
new ListaOS1(getActivity().getApplicationContext()).execute();
}
}
Error:
06-02 19:39:38.770: E/AndroidRuntime(28279): FATAL EXCEPTION: main
06-02 19:39:38.770: E/AndroidRuntime(28279): java.lang.NullPointerException
06-02 19:39:38.770: E/AndroidRuntime(28279): at com.bioscontrole2.FragmentOS$ListaOS1.onPostExecute(FragmentOS.java:102)
06-02 19:39:38.770: E/AndroidRuntime(28279): at com.bioscontrole2.FragmentOS$ListaOS1.onPostExecute(FragmentOS.java:1)
06-02 19:39:38.770: E/AndroidRuntime(28279): at android.os.AsyncTask.finish(AsyncTask.java:631)
06-02 19:39:38.770: E/AndroidRuntime(28279): at android.os.AsyncTask.access$600(AsyncTask.java:177)
06-02 19:39:38.770: E/AndroidRuntime(28279): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
06-02 19:39:38.770: E/AndroidRuntime(28279): at android.os.Handler.dispatchMessage(Handler.java:99)
06-02 19:39:38.770: E/AndroidRuntime(28279): at android.os.Looper.loop(Looper.java:137)
06-02 19:39:38.770: E/AndroidRuntime(28279): at android.app.ActivityThread.main(ActivityThread.java:4929)
06-02 19:39:38.770: E/AndroidRuntime(28279): at java.lang.reflect.Method.invokeNative(Native Method)
06-02 19:39:38.770: E/AndroidRuntime(28279): at java.lang.reflect.Method.invoke(Method.java:511)
06-02 19:39:38.770: E/AndroidRuntime(28279): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:798)
06-02 19:39:38.770: E/AndroidRuntime(28279): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:565)
06-02 19:39:38.770: E/AndroidRuntime(28279): at dalvik.system.NativeStart.main(Native Method)
