package com.itcast.test03;import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Toast;public class MainActivity extends Activity {private EditText et_username;private EditText et_userPsd;private Button login;private Button signUp;private CheckBox save;private String user,pass;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);       setContentView(R.layout.activity_main);et_username = (EditText)findViewById(R.id.et_number);et_userPsd = (EditText)findViewById(R.id.et_password);login=(Button)findViewById(R.id.login);signUp=(Button)findViewById(R.id.signUp);save = (CheckBox)findViewById(R.id.save);     //登录按钮的点击事件login.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stub//将输入的用户名和密码转换成字符串String name =et_username.getText().toString();String pwd = et_userPsd.getText().toString();//调用login方法
                login(name, pwd);}});}private void login(final String name, final String pwd){//创建Handler对象final Handler handler = new Handler() {public void handleMessage(Message msg) {if(msg.what == 1){Toast.makeText(MainActivity.this, "登录成功", Toast.LENGTH_SHORT).show();//提示登陆成功
                 finish();}else if(msg.what == 0){Log.i(name, msg.toString());}else if(msg.what == -1){Log.i("==============",msg.toString());}}};new Thread(){public void run() {//创建Message对象Message msg =new Message();try {Post po = new Post();String infoo = po.logina(name, pwd);if(infoo != null){msg.what = 1;//成功msg.obj = infoo;}else{msg.what = 0;//失败msg.obj = "2";}} catch (Exception e) {e.printStackTrace();msg.what = -1;msg.obj = e;}handler.sendMessage(msg);}}.start();}}

package com.itcast.test03;import java.io.IOException;import org.apache.http.HttpResponse;
import org.apache.http.ParseException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;import android.util.Log;public class Post {public String logina(String name, String pwd)throws ParseException, IOException, JSONException{//获取到HttpClient对象HttpClient httpClient = new DefaultHttpClient();String strurl = "http://10.6.78.213:2016/xampp/sse/index.php/home/Index/server_info";HttpPost request = new HttpPost(strurl);request.addHeader("Accept","application/json");request.addHeader("Content-Type","application/json");//还可以自定义增加headerJSONObject param = new JSONObject();//定义json对象param.put("sequenceId", "87620056570355357690");param.put("accType", "0");param.put("loginId", name);param.put("password", pwd);//param.put("thirdpartyAppId", "");//param.put("thirdpartyAccessToken", "");param.put("loginType", "1");Log.i("===========", param.toString());System.out.println("1+===========");StringEntity se = new StringEntity(param.toString());request.setEntity(se);//发送数据HttpResponse httpResponse = httpClient.execute(request);//获得相应 System.out.println("2+===========");//进行一行一行的调试时无法打印此语句。原因就是无法成功连接到    　　　　　　　　　　　　　　　　　　　　　　　网络int code = httpResponse.getStatusLine().getStatusCode();System.out.print(code);String result = EntityUtils.toString(httpResponse.getEntity());JSONObject result1 = new JSONObject(result);String info = (String) result1.get("retInfo");Log.i("=============", info);return info;}}