android学习笔记30--------------聊天式对话效果

这几天看了些聊天式对话效果，自己修改了一番。

public class ChatActivity extends Activity
{
    private ListView talkView;
    private Button messageButton;
    private EditText messageText;
    private ArrayList<ChatMessage> list = new ArrayList<ChatMessage>();

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        init();
    }

    private void init()
    {
        talkView = (ListView) findViewById(R.id.list);
        messageButton = (Button) findViewById(R.id.MessageButton);
        messageText = (EditText) findViewById(R.id.MessageText);
        messageButton.setOnClickListener(new OnClickListener()
        {

            @Override
            public void onClick(View v)
            {
                String date = getDate();
                String msgText = getText();
                int RIdA = R.layout.chatting_item_from;
                ChatMessage newMsg = new ChatMessage( date, msgText, RIdA);

                list.add(newMsg);
                int RIdB = R.layout.chatting_item_to;

                ChatMessage backMsg = new ChatMessage(date,
                        "自动回复(for test!)", RIdB);
                list.add(backMsg);
                talkView
                        .setAdapter(new ChattingAdapter(ChatActivity.this, list));
                messageText.setText("");
            }
        });
    }

    private String getDate()
    {
        SimpleDateFormat sdf = new SimpleDateFormat("MM-dd HH:mm");
        Date d = new Date();
        return sdf.format(d);
    }

    private String getText()
    {
        return messageText.getText().toString();
    }

}
public class ChatActivity extends Activity
{
private ListView talkView;
private Button messageButton;
private EditText messageText;
private ArrayList<ChatMessage> list = new ArrayList<ChatMessage>();

@Override
public void onCreate(Bundle savedInstanceState)
{
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  init();
}

private void init()
{
  talkView = (ListView) findViewById(R.id.list);
  messageButton = (Button) findViewById(R.id.MessageButton);
  messageText = (EditText) findViewById(R.id.MessageText);
  messageButton.setOnClickListener(new OnClickListener()
  {

   @Override
   public void onClick(View v)
   {
    String date = getDate();
    String msgText = getText();
    int RIdA = R.layout.chatting_item_from;
    ChatMessage newMsg = new ChatMessage( date, msgText, RIdA);

    list.add(newMsg);
    int RIdB = R.layout.chatting_item_to;

    ChatMessage backMsg = new ChatMessage(date,
      "自动回复(for test!)", RIdB);
    list.add(backMsg);
    talkView
      .setAdapter(new ChattingAdapter(ChatActivity.this, list));
    messageText.setText("");
   }
  });
}

private String getDate()
{
  SimpleDateFormat sdf = new SimpleDateFormat("MM-dd HH:mm");
  Date d = new Date();
  return sdf.format(d);
}

private String getText()
{
return messageText.getText().toString();
}

}
[java]
public class ChatMessage
{

    private String date;
    private String text;
    private int layoutID;

    public ChatMessage(String date, String text, int id)
    {
        this.date = date;
        this.text = text;
        this.layoutID = id;
    }

    public String getDate()
    {
        return date;
    }

    public void setDate(String date)
    {
        this.date = date;
    }

    public String getText()
    {
        return text; <

补充：移动开发 , Android ,