Question

I have a AsyncTask that runs and does its job and completes. onPostExecute does what its supposed to do and all is good. BUT the task is still running on the debug window in Eclipse. Every time I run the task I get a new one. So its not re-using the task I guess.

Has anyone seen this before?

Answer 1

I wrote this test app to try the asynctask. it runs 5 background tasks, and then must reuse them. I would just like to know that this is OK as I have not been able to find any reference to this concern. I would like to know why 5 tasks? Do they release memory and whatever else they are taking? I would have put this in a comment but didnt seem to allow code snips

    package com.mvw.tas;

import java.io.IOException;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

public class TestAsync extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);


        Button btnD = (Button)findViewById(R.id.Btn01);

        btnD.setOnClickListener(new Button.OnClickListener() {

            @Override
            public void onClick(View v) {
                new gback().execute( "");
            }
        });

    }

    ////////////////////////////////////////
    public class gback extends AsyncTask<String, Void, IOException> {
        //@Override
        protected IOException doInBackground(String... params) {
            Log.d( "ASTEST", "Running background");
            return null;

        }

        @Override
        protected void onPostExecute(IOException result) {
            Log.d( "ASTEST", "Post Exec");


        }

        @Override
        protected void onPreExecute() {

            Log.d( "ASTEST", "PRE Exec");;
        }

    }

}

and the XML

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />



<Button android:text="Test AysncTask" android:id="@+id/Btn01" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
</LinearLayout>