Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Android Build a Self-Destructing Message Android App Retrieving and Viewing Messages Creating a Custom List Adapter for Messages

Posted by roopesh raju
roopesh raju
Courses Plus Student 1,473 Points

After implementing this code there is no error but when i'm logging into it my application is getting crashed.

public class MessageAdapter extends ArrayAdapter<ParseObject> {

protected Context mContext;
protected List<ParseObject> mMessages;


public MessageAdapter(Context context,List<ParseObject> messages) {

    super(context,R.layout.message_item,messages);
    mContext = context;
    mMessages = messages;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
  ViewHolder holder;


    if (convertView == null) {


        convertView = LayoutInflater.from(mContext).inflate(R.layout.message_item, null);
        holder = new ViewHolder();
        holder.iconImageView = (ImageView) convertView.findViewById(R.id.Messageicon);
        holder.namelabel = (TextView) convertView.findViewById(R.id.Senderlabel);
        convertView.setTag(holder);
    }
    else {
        holder = (ViewHolder)convertView.getTag();
    }

    ParseObject message = mMessages.get(position);

    if (message.getString(ParseConstants.KEY_FILE_TYPE).equals(ParseConstants.TYPE_IMAGE)) {
        holder.iconImageView.setImageResource(R.drawable.pic);
    }
    else {
       holder.iconImageView.setImageResource(R.drawable.play);
    }

    holder.namelabel.setText(message.getString(ParseConstants.KEY_SENDER_NAME));
    return convertView;
}

private static class  ViewHolder{
    ImageView iconImageView;
    TextView namelabel;

}

}