tab2.java
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File Type:	java

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package c.test2;

import android.app.Activity;
import android.content.Context;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

/*********************************************************************************************
 * Tab2 Class/Activity
 * This activity is not complete because I was having trouble with getting another listView
        object working. everything is like Tab1 activity but there are two buttons for the
        list_item instead of just one Map button.
 * executes asyncTask ConnectTask
 *********************************************************************************************/
public class Tab2 extends Activity {

    private ArrayList<String> data = new ArrayList<String>();
    private String me; //get from login pages
    public String[] friends = new String[100];

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_tab2);

        Bundle extras = getIntent().getExtras();
        me = extras.getString("user");

        new ConnectTask().execute(friends);

        ListView lv2 = (ListView) findViewById(R.id.listView2);
        lv2.setAdapter(new MyListAdapter(this, R.layout.list_item2, data));
    }

    private class MyListAdapter extends ArrayAdapter<String>{
        private int layout;
        public MyListAdapter(Context context, int resource, List<String> objects) {
            super(context, resource, objects);
            layout = resource;
        }

        @Override
        public View getView(final int position, View convertView, ViewGroup parent) {
            ViewHolder mainViewHolder = null;
            if(convertView == null){
                LayoutInflater inflater = LayoutInflater.from(getContext());
                convertView = inflater.inflate(layout, parent, false);
                final ViewHolder viewHolder = new ViewHolder();
                viewHolder.thumbnail = (ImageView) convertView.findViewById(R.id.list_item_thumbnail2);
                viewHolder.title = (TextView) convertView.findViewById(R.id.list_item_text2);
                viewHolder.title.setText(getItem(position));
                viewHolder.buttonDecline = (Button) convertView.findViewById(R.id.btn_decline);
                viewHolder.buttonAccept = (Button) convertView.findViewById(R.id.btn_accept);
                viewHolder.buttonDecline.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        //make php script to call from here to write to friends list
                    }
                });
                viewHolder.buttonAccept.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        //make php script to call from here to write to friends list
                    }
                });
                convertView.setTag(viewHolder);
            }
            else{
                mainViewHolder = (ViewHolder) convertView.getTag();
                mainViewHolder.title.setText(getItem(position));
            }

            return convertView;
        }
    }

    public class ViewHolder{
        ImageView thumbnail;
        TextView title;
        Button buttonDecline;
        Button buttonAccept;
    }

    public class ConnectTask extends AsyncTask<String, String, String>
    {
        @Override
        protected String doInBackground(String... params) {
            HttpURLConnection connection = null;
            BufferedReader reader = null;
            String user[]; //find user by reading line in file

            try {
                URL url = new URL("http://compsci02.snc.edu/cs460/2016/lewicj/WhereAreYou/UserFolders/" +me+".txt");
                connection = (HttpURLConnection) url.openConnection();
                connection.connect();

                InputStream stream = connection.getInputStream();
                reader = new BufferedReader(new InputStreamReader(stream));

                String line = "";
                while ((line = reader.readLine()) != null)
                {
                    user = line.split(";");
                    data.add(user[1]);
                }
                return "success";

            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                if (connection != null) {
                    connection.disconnect();
                }
                try {
                    if (reader != null) {
                        reader.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }

            }
            return "error";
        }

        @Override
        protected void onPostExecute(String line) {
            super.onPostExecute(line);
        }
    }
}