Try this way
Declare Handeller
private Handler mHandler = new Handler();
newChat = chatmanager.createChat(user2 + "@localhost",
new MessageListener() {
@Override
public void processMessage(Chat chat, Message msg) {
mHandler.post(new Runnable() {
@Override
public void run() {
chatHistoryBox.setText(msg.getBody());
}
});
Log.wtf("AppName 5.5 ", msg.getBody());
}
});