onPostExecute getResources().getString NullPointerException

Question

When I run below code in the onPostExecute, it gives me an exception: java.lang.NullPointerException

getApplicationContext().getResources().getString(R.string.lbl_sth);
getBaseContext().getResources().getString(R.string.lbl_sth);

R.string.lbl_sth is definitely correct. If I run above two lines in onCreate, both lines work as expected.

did you solved it? I'm facing the same problem – Pedro Teran Sep 25 '13 at 22:00 — Pedro Teran, Sep 25 '13 at 22:00

score 3 · Answer 1 · answered Aug 05 '12 at 05:01

3

Don't use getBaseContext() in your AsyncTask... pass your Activity as a context to the AsyncTask instead. Then call getResources().getString(...) on the Activity directly.

answered Aug 05 '12 at 05:01

Alex Lockwood

83,063
39
206
250

2

NOT work. Inside the onPostExecute I call a UI's method, in that method I try to getString(R.string.lbl_sth). But no luck with any solution. Activity already there, still java.lang.NullPointerException. – fordiy Aug 05 '12 at 06:32

score 0 · Answer 2 · answered Jul 21 '15 at 17:28

You should pass the Strings from the Resources in the constructor of the AsyncTask:

public MyAsyncTask(String lblString) {
    this.lblString = lblString; 
}

you would construct and execute your task like this from an Activity/Fragment:

new MyAsyncTask(getString(R.string.lbl_sth)).execute();

score -2 · Answer 3 · answered Jun 02 '14 at 20:28

-2

Try to use getActivity().getResources().getString(R.string.lbl_sth);

answered Jun 02 '14 at 20:28

vovan888

748
6
10

It is not possible to 'getActivity' inside AsyncTask. – 1owk3y Jul 12 '15 at 06:58

onPostExecute getResources().getString NullPointerException

3 Answers3