android app demo

package jczb.shoping.model;
import java.io.Serializable;
import android.R.string;
//登录所需要的字段信息
public class loginMsg implements Serializable {
  private String avatarPath;
  private String accountNum;
  private String littleName;
  private String memberRank;
  private int growths;
  private String memberIntegral;
  public String getAvatarPath() {
    return avatarPath;
  }
  public void setAvatarPath(String avatarPath) {
    this.avatarPath = avatarPath;
  }
  public String getAccountNum() {
    return accountNum;
  }
  public void setAccountNum(String accountNum) {
    this.accountNum = accountNum;
  }
  public String getLittleName() {
    return littleName;
  }
  public void setLittleName(String littleName) {
    this.littleName = littleName;
  }
  public String getMemberRank() {
    return memberRank;
  }
  public void setMemberRank(String memberRank) {
    this.memberRank = memberRank;
  }
  public int getGrowths() {
    return growths;
  }
  public void setGrowths(int growths) {
    this.growths = growths;
  }
  public String getMemberIntegral() {
    return memberIntegral;
  }
  public void setMemberIntegral(String memberIntegral) {
    this.memberIntegral = memberIntegral;
  }
}

第二个用到的FoundPassWord，具体代码如下所示：

/***
 * 说明：找回密码的相关信息
 * 作者：丁国华
 * 时间：2015年7月17日 09:41:18
 */
package jczb.shoping.model;
import java.io.Serializable;
import android.R.string;
public class foundPassWord implements Serializable {
  private String phoneNumber; //手机号
  private String vlidationNum; //验证码
  private String passWord; //密码
  private String repetyPassWord; //确认密码
  public String getPhoneNumber() {
    return phoneNumber;
  }
  public void setPhoneNumber(String phoneNumber) {
    this.phoneNumber = phoneNumber;
  }
  public String getVlidationNum() {
    return vlidationNum;
  }
  public void setVlidationNum(String vlidationNum) {
    this.vlidationNum = vlidationNum;
  }
  public String getPassWord() {
    return passWord;
  }
  public void setPassWord(String passWord) {
    this.passWord = passWord;
  }
  public String getRepetyPassWord() {
    return repetyPassWord;
  }
  public void setRepetyPassWord(String repetyPassWord) {
    this.repetyPassWord = repetyPassWord;
  }
}

接着，我们来画页面，用xml对我们的登录页面进行相关布局设置，具体代码如下所示：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="vertical"
  android:background="@color/login_background_color">
  <!-- 学乐购的布局 -->
  <TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="30dp"
    android:gravity="center"
    android:text="学乐购"
    android:textColor="@color/blue_ipsetting"
    android:textSize="30sp"
    android:textStyle="bold" />
  <!-- 整个LinearLayout是账号和请输入账号的矩形框架 -->
  <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:orientation="horizontal"
        android:padding="10sp"
        android:background="@color/white" >
        <!-- 帐号的布局 -->
        <TextView
          android:id="@+id/tv_loginAccount"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="@string/loginAccount"
          android:textColor="@android:color/black"
          android:textSize="18.0sp" />
        <!-- EditText表示的是请输入帐号的一个布局 -->
        <EditText
          android:id="@+id/loginAccount_id"
          android:layout_width="160dp"
          android:layout_height="wrap_content"
          android:layout_weight="1"
          android:background="@null"
          android:ems="10"
          android:hint="@string/inputAccount"
          android:padding="5.0dip"
          android:paddingRight="40dp"
          android:textColor="#ff3b3b3b"
          android:textSize="16.0sp" >
        </EditText>
   </LinearLayout>
   <!-- 密码和请输入密码的整个布局 -->
   <LinearLayout
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:layout_margin="5dp"
     android:orientation="horizontal"
     android:padding="10sp"
     android:background="@color/white">
     <!-- 密码的布局 -->
     <TextView
       android:id="@+id/tv_password"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:text="@string/password"
       android:textColor="@android:color/black"
       android:textSize="18.0sp"/>
     <!-- 请输入密码的布局 -->
     <EditText
       android:id="@+id/password_id"
       android:layout_width="163dp"
       android:layout_height="wrap_content"
       android:layout_weight="1"
       android:background="@null"
       android:ems="10"
       android:hint="@string/inputPassword"
       android:inputType="textPassword"
       android:padding="5.0dip"
       android:paddingRight="30dp"
       android:textColor="#ff3b3b3b"
       android:textSize="16.0sp"/>
       </LinearLayout>
     <Button
      android:id="@+id/login"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:layout_marginBottom="14dp"
      android:layout_marginLeft="15dp"
      android:layout_marginRight="15dp"
      android:layout_marginTop="80dp"
      android:background="@drawable/android_title_bg"
      android:gravity="center"
      android:text="@string/login"
      android:textColor="#fff" />
     <!-- 找回密码和理解注册的布局 -->
     <!-- 找回密码和立即注册的布局 -->
   <LinearLayout
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:layout_margin="5dp"
     android:background="@color/white"
     android:orientation="horizontal"
     android:padding="10sp" >
     <!-- 找回密码 -->
     <TextView
       android:layout_width="70dp"
       android:layout_height="50dp"
       android:layout_marginLeft="40dp"
       android:layout_marginTop="15dp"
       android:text="找回密码"
       android:textSize="15sp"
       android:textStyle="bold" />
     <!-- 立即注册 -->
     <TextView
       android:layout_width="70dp"
       android:layout_height="56dp"
       android:layout_marginLeft="55dp"
       android:layout_marginTop="15dp"
       android:layout_weight="0.03"
       android:text="立即注册"
       android:textSize="15sp"
       android:textStyle="bold" />
   </LinearLayout>
</LinearLayout>

最后，来看一下具体的逻辑部分的代码，具体代码如下所示：

package jczb.shoping.ui;
import java.security.PublicKey;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.alibaba.fastjson.JSON;
import jczb.shoping.common.AgentApi;
import jczb.shoping.model.foundPassWord;
import jczb.shoping.model.loginMsg;
import android.R.integer;
import android.R.string;
import android.accounts.Account;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class LoginActivity extends Activity implements OnClickListener {
  //声明变量
  private Handler mHandler;
  EditText account;
  EditText password;
  private Button loginButton ;
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_login);
      account =(EditText) findViewById(R.id.loginAccount_id);
      password=(EditText) findViewById(R.id.password_id);
      loginButton=(Button) findViewById(R.id.login);
     // 对登录按钮设置监听，方法由下面的Onclick实现
      loginButton.setOnClickListener(this);
}
    @Override
    /**
     * 实现登录按钮的跳转
     */
    public void onClick(View v) {
      // 根据id判断单击的是哪个控件，固定写法
      switch (v.getId()) {
      case R.id.login:
        login();
        break;
      default:
        break;
      }
    }
    /**
     * 登录方法
     */
    public boolean login() {
      if (isUserNameAndPwdValid()) {
        mHandler=new Handler(){
          public void handleMessage(Message msg){
            switch(msg.what){
            case -1:
            Toast.makeText(LoginActivity.this,"服务器连接失败!",
                  Toast.LENGTH_SHORT).show();
              break;
            case -2:
            Toast.makeText(LoginActivity.this,"哎呀,出错啦...",
                  Toast.LENGTH_SHORT).show();
              break;
            case 1:
              String temp=(String)msg.obj;
              //将拿到的json转换成数组
        List<loginMsg> loginMsgInfo=JSON.parseArray(temp, loginMsg.class);
      List<foundPassWord> foundPassWordInfo=JSON.parseArray(temp,foundPassWord.class);
      String userName=account.getText().toString().trim();
        String pwd=password.getText().toString().trim();
      String AccountNum=loginMsgInfo.get(0).getAccountNum();
      String psaaword=foundPassWordInfo.get(0).getPassWord();
       if (account.equals(AccountNum)&& pwd.equals(psaaword)) {
        //实现界面的跳转
        Intent intent = new Intent(LoginActivity.this,MainActivity.class);
              startActivity(intent);
              //关闭当前界面
              finish();
              }else{
            //实现界面的跳转
         Intent intent = new Intent(LoginActivity.this,MainActivity.class);
             startActivity(intent);
             //关闭当前界面
             finish();
//       Toast.makeText(LoginActivity.this, "用户名或密码错误", 0).show();
              }
            }
          }
        };
        //主线程
          new Thread(){
            public void run(){
              Message msg= new Message();
            try{
              Map<String,String> parmas=new HashMap<String,String>();
              parmas.put("username","1");
              parmas.put("password","2");
     String loginMsgurl="http://192.168.1.110:8080/SchoolShopJson/LoginMsg.txt";
     String foundPassWordurl="http://192.168.1.110:8080/SchoolShopJson/foundPassWord.txt";
              //要发送的数据和访问的地址
          String resultloginMsgString=AgentApi.dopost(parmas,loginMsgurl);
            String resultfpasswordString=AgentApi.dopost(parmas, foundPassWordurl);
              //发送handler信息
              msg.what=1;
              msg.obj=resultloginMsgString;
            }catch(Exception e){
              e.printStackTrace();
              //使用-1代表程序异常
              msg.what=-2;
              msg.obj=e;
            }
            mHandler.sendMessage(msg);
          }
          }.start();
      }
      return false;
    }
    /**
     * 判断用户名和密码是否有效
     *
     * @return
     */
    public boolean isUserNameAndPwdValid() {
      // 用户名和密码不得为空
      if (account.getText().toString().trim().equals("")) {
        Toast.makeText(this, getString(R.string.accountName_empty),
            Toast.LENGTH_SHORT).show();
        return false;
      } else if (password.getText().toString().trim().equals("")) {
        Toast.makeText(this, getString(R.string.password_empty),
            Toast.LENGTH_SHORT).show();
        return false;
      }
      return true;
    }
}

最后，我们来看一下运行效果，如下截图所示：