Passing a parameter to onclick listener on a button in a listview row

Question

Hi,

I just started android and i'm running into some problems.
I have created a listview that is populated from a database.
Each row has a button to delete the item from the list and the database.

I am able to hook up an event listener to the button but I have not been able to determine the matching database record to be deleted.

My class is below
public class FeedArrayAdapter extends ArrayAdapter implements OnClickListener {

private ARssEReaderDBAdapter dba;
private String TAG = "FeedArrayAdapter";

public FeedArrayAdapter(Context context, int textViewResourceId, List<Feed> items)          {
    super(context, textViewResourceId, items);
    Log.w(TAG, "List");
}

@Override
public View getView(int position, View convertView, ViewGroup parent){
    Log.w(TAG, "getView");
    View v = convertView;
    if (v == null) {
        LayoutInflater vi = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        v = vi.inflate(R.layout.feedlistrow, null);
    }
    Feed feed = getItem(position);
    if (feed != null){
        TextView title = (TextView)v.findViewById(R.id.TextView01);
        if (title != null){
            title.setText(feed.getTitle());
        }
        Button btnDelete = (Button)v.findViewById(R.id.btnDelete);
        btnDelete.setOnClickListener(this); //btnDeleteFeedListener
    }
    return v;
}

public void onClick(View v){
    Log.w(TAG, "something got clicked: ");
}

}

So how can I pass the database record ID to the handler so I can use the database adapter to delete it.

Any help is greatly appreciated.

Kind regards,

Richard

Answer 1

Create a inner class that implements OnClickListener and then pass the position variable in the constructor.

 private Class MyClickListener implements OnClickListener {

    private int position;

    public MyClickListener(int position) {
       this.position = position;
    }

    public void onClick(View v) {
       System.out.println("position " + getPosition() + " clicked.");
    }

    public int getPosition() {
      return position;
    }

 }

Answer 2

You should store the ID of the record in the Tag, call setTag() on your view, and to read in onclick call getTag()