##一、实现了这些功能
###1.基本的聊天功能
###2.删除聊天记录
###2.保存聊天记录
##二、用到的东西
###1.使用了POST方法请求网络
###2.使用了listview展现消息
###3.使用了Handler、runnable、 Thread请求网络与UI操作
private Handler mHandler = new Handler()
{
public void handleMessage(Message msg)
{
// 等待接收，子线程完成数据的返回
ChatMessage fromMessage = (ChatMessage) msg.obj;
mDatas.add(fromMessage);
mAdapter.notifyDataSetChanged();
mMsgs.setSelection(mDatas.size()-1);
}
};
......
new Thread()
{
public void run()
{
ChatMessage fromMessage = NetUtils.SendMessage(toMsg);
Message m = Message.obtain();
m.obj = fromMessage;
mHandler.sendMessage(m);
}
}.start();
###4.使用了 SharedPreference保存与删除数据 ####4.1删除数据
private void DeleteData(){
SharedPreferences.Editor editor = sp.edit();
editor.clear();
editor.commit();
Toast.makeText(this, "删除成功", Toast.LENGTH_SHORT).show();
}####4.2保存数据
private void SaveData(List<ChatMessage>list){
for(int i =0;i<list.size();i++){
sp.edit().putString(MSG+i, String.valueOf(mDatas.get(i).getMsg())).commit();
}
if (list.size()!=0){
Toast.makeText(this, "聊天数据保存成功", Toast.LENGTH_SHORT).show();
}
sp.edit().putInt(TOTAL,list.size()).commit();
}