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

Manfredi Martorana
Manfredi Martorana
19,470 Points

username doesn't show on the list, only icon

Hello everybody, I can't figure out why usernames don't show in the list.

I had tried to give it a sample string, and it worked. The problem is that: message.getString(ParseConstants.KEY_SENDER_NAME) is null, so the label appears blank.

I checked also in parse.com and the sender name is correctly showed.

Here is my code:

public class MessageAdapter extends ArrayAdapter<ParseObject> {

public static final String TAG = MessageAdapter.class.getSimpleName();

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

    ParseObject message = mMessages.get(position);

    Date createdAt = message.getCreatedAt();
    long now = new Date().getTime();
    String convertedDate = DateUtils.getRelativeTimeSpanString(createdAt.getTime(), now, DateUtils.SECOND_IN_MILLIS).toString();

    if (message.getString(ParseConstants.KEY_FILE_TYPE).equals(ParseConstants.TYPE_IMAGE)) {
        holder.iconImageView.setImageResource(R.drawable.ic_picture);
    }
    else if (message.getString(ParseConstants.KEY_FILE_TYPE).equals(ParseConstants.TYPE_VIDEO)) {
        holder.iconImageView.setImageResource(R.drawable.ic_video);
    }
    else {
        holder.iconImageView.setImageResource(R.drawable.ic_email_white_24dp);
    }

    // BUG TO FIX
    holder.nameLabel.setText(message.getString(ParseConstants.KEY_SENDER_NAME));
    holder.timeLabel.setText(convertedDate);

    return convertView;
}

private static class ViewHolder {
    ImageView iconImageView;
    TextView nameLabel;
    TextView timeLabel;
}

public void refill(List<ParseObject> messages) {
    mMessages.clear();
    mMessages.addAll(messages);
    notifyDataSetChanged();
}

}

Thanks for the help :)