Android Open Source - MySms Conversation Adapter

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License

The source code is released under:

Apache License

Java Source Code

package com.henningta.mysms;
//from  w w  w. ja  v a  2  s .  com
import android.content.Context;
import android.graphics.Typeface;
import android.os.Build;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;

/**
 * Custom adapter for SMS conversations on main page
 */
public class ConversationAdapter extends ArrayAdapter<Conversation> {

  private DatabaseHandler dbHandler;

  private LayoutInflater inflater;
  private int resourceId;

  private HashSet<Conversation> checkedItems;

  private boolean multiMode;

  public ConversationAdapter(Context context, int resourceId, ArrayList<Conversation> conversations) {
    super(context, resourceId, conversations);

    this.dbHandler = new DatabaseHandler(context);

    this.inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    this.resourceId = resourceId;

    this.checkedItems = new HashSet<Conversation>();
    this.multiMode = false;
  }

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

    ItemHolder holder;

    if (convertView == null) {
      // create new
      holder = new ItemHolder();
      convertView = inflater.inflate(resourceId, parent, false);

      holder.name = (TextView)convertView.findViewById(R.id.conversation_text_title);
      holder.count = (TextView)convertView.findViewById(R.id.conversation_text_count);
      holder.subtitle = (TextView)convertView.findViewById(R.id.conversation_text_subtitle);
      holder.time = (TextView)convertView.findViewById(R.id.conversation_text_time);

      convertView.setTag(holder);
    } else {
      // recycle
      holder = (ItemHolder)convertView.getTag();
    }

    /* find conversation by position */
    Conversation conversation = this.getItem(position);

    /* get last message in conversation or set default values (should never happen) */
    String subtitle = "No messages.";

    ArrayList<Message> messages = dbHandler.getMessages(conversation.getSource());
    Message message = null;
    if (messages.size() > 0) {
      message = messages.get(messages.size() - 1);

      /* get message text */
      subtitle = message.getText();
    }

    long time = conversation.getTime();

    /* format time */
    String formattedTime = "";
    if (time == 0 || time == Settings.NOT_SET)
      holder.time.setVisibility(View.GONE);
    else
      formattedTime = Settings.formatTime(time);

    /* set values */
    holder.name.setText(conversation.getName());
    holder.count.setText(String.valueOf(messages.size()));
    holder.subtitle.setText(subtitle);

    if (message != null) {
      if (message.getStatus() == Message.STATUS_SENDING) {
        holder.time.setText("Sending...");
      } else if (message.getStatus() == Message.STATUS_FAILED) {
        holder.time.setText("Failed.");
      } else {
        holder.time.setText(formattedTime);
      }
    }

    /* set default styles */
    convertView.setBackgroundResource(R.drawable.conversation_selector_default);
    holder.name.setTypeface(null, Typeface.NORMAL);
    holder.count.setTypeface(null, Typeface.NORMAL);

    /* set styles for when conversation contains new messages */
    if (conversation.hasNewMessages()) {
      convertView.setBackgroundResource(R.drawable.conversation_selector_has_new);
      holder.name.setTypeface(null, Typeface.BOLD);
      holder.count.setTypeface(null, Typeface.BOLD);
    }

    /* set checked state */
    if (checkedItems.contains(conversation)) {
      // if this item is checked
      convertView.getBackground().setState(new int[] { android.R.attr.state_checked });
    } else {
      // if this item is unchecked (notice the minus)
      convertView.getBackground().setState(new int[] { -android.R.attr.state_checked });
    }

    return convertView;
  }

  @Override
  public void addAll(Collection<? extends Conversation> items) {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
      for (Conversation item : items) {
        this.add(item);
      }
    } else {
      super.addAll(items);
    }
  }

  /**
   * Holder class for conversation resources
   */
  class ItemHolder {
    TextView name;
    TextView count;
    TextView subtitle;
    TextView time;
  }

  /**
   * Begin multi-mode selection of items
   */
  public void enterMultiMode() {
    multiMode = true;
    notifyDataSetChanged();
  }

  /**
   * Stop selecting items
   */
  public void exitMultiMode() {
    checkedItems.clear();
    multiMode = false;
    notifyDataSetChanged();
  }

  /**
   * Set item at current position to checked or unchecked
   */
  public void setChecked(int position, boolean checked) {
    Conversation conversation = this.getItem(position);

    if (checked)
      checkedItems.add(conversation);
    else
      checkedItems.remove(conversation);

    if (multiMode)
      notifyDataSetChanged();
  }

  /** Return checked state of item at position */
  /*public boolean isChecked(int position) {
    return checkedItems.contains(this.getItem(position));
  }*/

  /**
   * Toggle checked state of item at position
   */
  public void toggleChecked(int position) {
    final Conversation conversation = this.getItem(position);

    if (checkedItems.contains(conversation))
      checkedItems.remove(conversation);
    else
      checkedItems.add(conversation);

    notifyDataSetChanged();
  }

  /**
   * Return number of checked items
   */
  public int getCheckedItemCount() {
    return checkedItems.size();
  }

  /**
   * Return set of checked items
   */
  public Set<Conversation> getCheckedItems() {
    return checkedItems;
  }

}

Java Source Code List

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