Can’t call AsyncTask from a static method?… here is a solution to the problem.
Can’t call AsyncTask from a static method?
I can’t seem to call AsyncTask from a static method. It says “cannot be referenced from a static context”. The important thing is that this method is static and I need to use it like several of my other processes.
Is there a way to call AsyncTask from within the method?
public static void UpdateResults(String requestSearch){
new GetSearchResults(requestSearch).execute(); shows an error
}
class GetSearchResults extends AsyncTask<Void, Void, Void> {
String requestSearch;
GetSearchResults(String searchtext){
this.requestSearch = searchtext;
}
@Override
protected Void doInBackground(Void... params) {
functions continuing
}
}
EDIT: The Anands solution works, but it throws this exception as soon as it arrives at the method:
FATAL EXCEPTION: AsyncTask #1
Process: com.eproject.eproject.emobile, PID: 26831
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:300)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:841)
Caused by: java.lang.NullPointerException
at com.eproject.eproject.emobile.SearchTabs.SearchPeopleTab$GetSearchResults.doInBackground(SearchPeopleTab.java:78)
at com.eproject.eproject.emobile.SearchTabs.SearchPeopleTab$GetSearchResults.doInBackground(SearchPeopleTab.java:63)
Line 78, which shows the null pointer, points to this line of code:
SharedPreferences accPref = getActivity().getSharedPreferences(
"accPref", Context.MODE_PRIVATE);
It looks like it can’t get SharedPreferences from the AsyncTask method right now. It used to work just fine. Any questions?
Solution
If the Async
class is a non-static
inner class in an activity, then you need an
instance
in order to instantiate
the inner class
.
You must call it in the static
method:
SearchPeopleTab outerClass = new SearchPeopleTab(); Outer class
GetSearchResults task = outerClass.new GetSearchResults(requestSearch);
task.execute();