android how to add items dynamically to a listview like in chat application

Question

I am trying to do a chat application. In my activity I have a ListView and at bottom EditText with a Button "Send"

Like in chat after writing in EditText and press the Send Button the text will appear in ListView . Two users are there. If the last user is same then that text should add to the previous list.

How can i do that ? here is my code below,

http://pastebin.com/hghj1fBJ

i don't want in this structure,

me: hi (after send button click)

me: hru (after send button click)

i want in this structure,

its taking two list item but i want

me: hi (after send button click)

 h r u (after send button click)

friend: fine

Answer 1

Since you are trying to build chat kind of application, you should check transcript mode of listview too. check here,
http://www.mubasheralam.com/tutorials/android/listview-transcript-mode

Answer 2

public void sendMessage(String message)
    {
        messageAdapter.add("me :"+message);
        messageAdapter.notifyDataSetChanged();
    }
}

Answer 3

我没有看到您在 ArrayAdapter 上调用了 notifyDataSetChanged()。

Answer 4

setAdpater() .. method should be called after the new text is beeing added.. and the String[] array should be updated with new values..
or

refer this http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/List12.html