MainActivity.java

package com.finepointmobile.multithreading;

import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        new MyCustomLongRunningTask(this, "http://www.cnn.com/api/v1/asdf/whatever/here");
    }

    private class MyCustomLongRunningTask extends AsyncTask<Void, Void, Void> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
        }

        private Context mContext;
        private String mUrl;

        public MyCustomLongRunningTask(Context mContext, String mUrl) {
            this.mContext = mContext;
            this.mUrl = mUrl;
        }

        @Override
        protected Void doInBackground(Void... voids) {
            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            super.onPostExecute(aVoid);
        }
    }
}