Android Open Source - Photochat message Adapter

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License

The source code is released under:

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Java Source Code

//Custom list adapter
package com.navneet.photochat;
/*from w w w .  j a v  a2  s .c o m*/
import java.util.Date;
import java.util.List;

import android.content.Context;
import android.text.format.DateUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.parse.ParseObject;

//Array adapter is generic type
public class messageAdapter extends ArrayAdapter<ParseObject> {

  // Declaration of member variables

  protected Context mContext;
  protected List<ParseObject> mMessages;

  // Create constructor
  public messageAdapter(Context context, List<ParseObject> messages) {
    // Set the custom layout here
    super(context, R.layout.listitem, messages);
    mContext = context;
    mMessages = messages;
  }

  // Define the getView method
  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder;
    // Recycling list items to increase efficiency
    // Inflate the layout file to view
    if (convertView == null) {
      convertView = LayoutInflater.from(mContext).inflate(
          R.layout.listitem, null);
      holder = new ViewHolder();
      holder.iconImage = (ImageView) convertView
          .findViewById(R.id.iconimage);
      holder.textLabel = (TextView) convertView
          .findViewById(R.id.iconText);
      convertView.setTag(holder);
      holder.timeLabel = (TextView) convertView
          .findViewById(R.id.timeLabel);

    } else {
      // convertView already created
      holder = (ViewHolder) convertView.getTag();

    }
    // Now set the icons
    ParseObject message = mMessages.get(position);
    
    // To set the time the message was received at
    Date createdAt = message.getCreatedAt();
    // get current time
    long now = new Date().getTime();
    // get the string value
    String convertedDate = DateUtils.getRelativeTimeSpanString(
        createdAt.getTime(), now, DateUtils.SECOND_IN_MILLIS)
        .toString();
    // set the string convertedDate in the textview
    holder.timeLabel.setText(convertedDate);
    
    if (message.getString(ParseConstants.KEY_FILE_TYPE).equals(
        ParseConstants.TYPE_IMAGE)) {
      holder.iconImage.setImageResource(R.drawable.picture);
    } else {
      holder.iconImage.setImageResource(R.drawable.play);
    }
    holder.textLabel.setText(message
        .getString(ParseConstants.KEY_SENDER_NAME));

    return convertView;
  }

  private static class ViewHolder {
    ImageView iconImage;
    TextView textLabel;
    TextView timeLabel;
  }

  public void refill(List<ParseObject> messages) {
    // 1.Clear the list
    mMessages.clear();
    // 2.Add data
    mMessages.addAll(messages);
    // Notify the user about the change
    notifyDataSetChanged();

  }
}

Java Source Code List