Question

sir, can you help me on how i can display the details from a sqlite by clicking its corresponding custom listview item? my listview contains three columns so i wanted it to be displayed in another activity where i can edit the information and delete, etc.. at first, i thought of using row id but gave up on the idea because if i tried to delete an item in database, i cannot use the deleted row id. so the row ids of listview and database won’t match. for ex. row ids from database 1,2,3… if i deleted row 2, if i add another item, it will just add to row 4… like this row 1,3,4. thanks for help in advance

public class CustomListView extends Activity {
final Context context = this;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    GroupDb info = new GroupDb(this);
    info.open();
    ArrayList<Contact> searchResults = info.getView();


    final ListView lv = (ListView) findViewById(R.id.srListView);
    lv.setAdapter(new MyCustomBaseAdapter(this, searchResults));
    info.close();

    lv.setOnItemClickListener(new OnItemClickListener() {

        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            // TODO Auto-generated method stub
}

here is my custombaseadapter

public class MyCustomBaseAdapter extends BaseAdapter {
private static ArrayList<Contact> searchArrayList;

private LayoutInflater mInflater;

public MyCustomBaseAdapter(Context context, ArrayList<Contact> results) {
    searchArrayList = results;
    mInflater = LayoutInflater.from(context);
}

public int getCount() {
    return searchArrayList.size();
}

public Object getItem(int position) {
    return searchArrayList.get(position);
}

public long getItemId(int position) {
    return position;
}

public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder;
    if (convertView == null) {
        convertView = mInflater.inflate(R.layout.custom_row_view, null);
        holder = new ViewHolder();
        holder.txtName = (TextView) convertView.findViewById(R.id.name);

        holder.txtPhone = (TextView) convertView.findViewById(R.id.phone);

        holder.status = (TextView) convertView.findViewById(R.id.status);
        convertView.setTag(holder);
    } else {
        holder = (ViewHolder) convertView.getTag();
    }

    holder.txtName.setText(searchArrayList.get(position).getName());

    holder.txtPhone.setText(searchArrayList.get(position).getPhoneNumber());

    holder.status.setText(searchArrayList.get(position).getStatus());

    return convertView;
}

static class ViewHolder {
    TextView txtName;
    TextView txtPhone;
    TextView status;
}
}

here is how i saved the database values with three fields/columns from GroupDb.class in my customlistview

public ArrayList<Contact> getView() 
{
    // TODO Auto-generated method stub
    ArrayList<Contact> results = new ArrayList<Contact>();
    String[] columns = new String[]{KEY_NAME, KEY_NUMBER, KEY_STATUS};
    Cursor c = ourDatabase.query(DATABASE_TABLE, columns, null, null, null, null, null);
    String sName = "";
    String nName = "";
    String status = "";
    int iName = c.getColumnIndex(KEY_NAME);
    int iNumber = c.getColumnIndex(KEY_NUMBER);
    int iStatus = c.getColumnIndex(KEY_STATUS);
    Contact contact;
    for(c.moveToFirst(); ! c.isAfterLast(); c.moveToNext())
    {
        contact = new Contact();
        sName += c.getString(iName);
        nName += c.getString(iNumber);
        status += c.getString(iStatus);
        contact.setName(sName);
        contact.setPhoneNumber(nName);
        contact.setStatus(status);
        results.add(contact);
        sName = "";
        nName = "";
        status = "";
    }
    return results;
}

Answer 1

You are maintaining arraylist of contacts. On click of list view get the position fetch contact object from that given position from your arraylist. You must have to save primary key column in your COntact Class.