Question

Im getting my data from a web service and loads to a list view. Which is working fine. but When I click on a particular list item I need to pass the id of that record (Id should is coming from the database) to another activity. Here is the code where I populate the array

public String[] getNames(String response){
    String[] friends = null;
    try {
        JSONObject json = new JSONObject(response);
        String values = json.getString("friends");
        JSONArray jsonArray = new JSONArray(values);
        friends = new String[jsonArray.length()];
        //Bundle b = new Bundle();
        for (int i = 0; i < jsonArray.length(); i++) {

            friends[i] =  jsonArray.getJSONObject(i).getString("fname")+ " " + jsonArray.getJSONObject(i).getString("lname") ;
            friends[i+1] = jsonArray.getJSONObject(i).getString("id");
            //i++;  
            //friends[i]= jsonArray.getJSONObject(i).getString("id");
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return friends;
}

This is the code Im trying to get the name and the ids

@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
    super.onListItemClick(l, v, position, id);
    // Get the item that was clicked
    Object o = this.getListAdapter().getItem(position);
    String name = o.toString();
    Object x = this.getListAdapter().getItem(position+1);
    String userid= x.toString();
    Toast.makeText(this, "You selected: " + name +"The Id: "+userid, Toast.LENGTH_LONG)
            .show();
}

This is my xml file for the list view

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#ffffff"
>
<ImageView
android:id="@+id/icon"
android:padding="2dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/man"
/>
<TextView
android:id="@+id/txtName"
android:layout_width="210px"
android:layout_height="60px"
    android:padding="4dp"
    android:textSize="12sp" 
    android:textColor="#000000" 
    android:background="#ffffff"
/>

</LinearLayout>

This is how I populate the list view

public void setTheList(String response){
        String friends[] = getNames(response);
        ListView lv = getListView();
        lv.setTextFilterEnabled(true);
        if(adapter==null){
            LayoutInflater inflater = getLayoutInflater();
            ViewGroup header = (ViewGroup)inflater.inflate(R.layout.header, lv, false);
            lv.addHeaderView(header, null, false);
        }

        adapter = new MyArrayAdapter(this, friends);
        this.setListAdapter(adapter);

    }

}

This is my Adapter. I got it from here

package virtualpathum.web;

import android.app.Activity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;

public class MyArrayAdapter extends ArrayAdapter<String> {
    private final Activity context;
    private final String[] names;

    public MyArrayAdapter(Activity context, String[] names) {
        super(context, R.layout.friend, names);
        this.context = context;
        this.names = names;
    }

    // static to save the reference to the outer class and to avoid access to
    // any members of the containing class
    static class ViewHolder {
        public ImageView imageView;
        public TextView textView;
        public ImageButton ibConfirm;
        public ImageButton ibNotNow;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // ViewHolder will buffer the assess to the individual fields of the row
        // layout

        ViewHolder holder;
        // Recycle existing view if passed as parameter
        // This will save memory and time on Android
        // This only works if the base layout for all classes are the same
        View rowView = convertView;
        if (rowView == null) {
            LayoutInflater inflater = context.getLayoutInflater();
            rowView = inflater.inflate(R.layout.friend, null, true);
            holder = new ViewHolder();
            holder.textView = (TextView) rowView.findViewById(R.id.txtName);
            holder.imageView = (ImageView) rowView.findViewById(R.id.icon);
            //holder.ibConfirm = (ImageButton) rowView.findViewById(R.id.ibNotNow);
            //holder.ibNotNow= (ImageButton) rowView.findViewById(R.id.ibNotNow);
            rowView.setTag(holder);
        } else {
            holder = (ViewHolder) rowView.getTag();
        }

        holder.textView.setText(names[position]);
        // Change the icon for Windows and iPhone
        String s = names[position];
        holder.imageView.setImageResource(R.drawable.man);

        return rowView;
    }
}

Really appreciate if you have idea about this
Thanks
Pathum

Answer 1

As far as I understand, you have no problem to get the id back. However, you could supply a Tag to any View (so you can pass the id as Tag inside the LinearLayout). Then if you have your id you could start your new Activity like this:

Intent intent = new Intent(getContext(), YOUR_ACTIVITY_YOU_WANNA_START.class);
intent.putExtra("ID", userid);
startActivity(0, intent);

in the recieving Activity (in this case YOUR_ACTIVITY_YOU_WANNA_START.class) you call maybe in onCreate()

Intent intent = getIntent();
String userId = intent.getExtra("ID" , "DEFAULT");