loginactivity

package com.example.phonefragment;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class LoginActivity extends Activity {

Handler handler;

EditText username;
EditText password;
Button btn_login;
Button btn_changepwd;
Button btn_register;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);

handler = new Handler();
username = (EditText) findViewById(R.id.edt_loginid);
password = (EditText) findViewById(R.id.edt_loginpassword);
btn_login = (Button) findViewById(R.id.btn_login);
btn_changepwd = (Button) findViewById(R.id.btn_login_forgetpassword);
btn_register = (Button) findViewById(R.id.btn_login_register);

btn_login.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
String name = username.getText().toString();
String pwd = password.getText().toString();

String url = "http://192.168.1.108:3000/users/queryById";

LoginThread httpThread = new LoginThread(url, name, pwd);
httpThread.start();
}
});

btn_changepwd.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setClass(LoginActivity.this, ChangePwdActivity.class);
startActivity(intent);
}
});

btn_register.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setClass(LoginActivity.this, ChangePwdActivity.class);
startActivity(intent);
}
});
}

class LoginThread extends Thread {

String str;

String url;

String username;

String password;

public LoginThread(String url, String username, String password) {
// TODO Auto-generated constructor stub
this.url = url;
this.username = username;
this.password = password;
}

public void doGet() {
HttpClient httpClient = new DefaultHttpClient();
// 注意，下面这一行中，我之前把链接中的"test"误写成了"text"，导致调BUG调了半天没弄出来，真是浪费时间啊
String url = this.url + "?tel=" + username + "&pwd=" + password;
// 第二步：创建代表请求的对象,参数是访问的服务器地址
HttpGet httpGet = new HttpGet(url);
try {
// 第三步：执行请求，获取服务器发还的相应对象
HttpResponse response = httpClient.execute(httpGet);
// 第四步：检查相应的状态是否正常：检查状态码的值是200表示正常
if (response.getStatusLine().getStatusCode() == 200) {
// 第五步：从相应对象当中取出数据，放到entity当中
HttpEntity entity = response.getEntity();
BufferedReader reader = new BufferedReader(
new InputStreamReader(entity.getContent()));
StringBuffer sb = new StringBuffer();
while ((str = reader.readLine()) != null) {
sb.append(str);
}
str = sb.toString();
if (str.trim().equals("empty")) {
// 用户登录失败
handler.post(new Runnable() {

@Override
public void run() {
// TODO Auto-generated method stub
Toast.makeText(LoginActivity.this, "账号不存在",
Toast.LENGTH_LONG).show();
}
});
} else {
if (str.trim().equals("ok")) {
// 用户登录成功
Intent intent = new Intent();
intent.setClass(LoginActivity.this,
MainActivity.class);
Bundle bundle = new Bundle(); // 创建Bundle对象
bundle.putString("tel", username); // 装入数据
intent.putExtras(bundle); // 把Bundle塞入Intent里面
startActivity(intent);
LoginActivity.this.finish();
} else {
handler.post(new Runnable() {

@Override
public void run() {
// TODO Auto-generated method stub
Toast.makeText(LoginActivity.this,
"账号或密码错误", Toast.LENGTH_LONG)
.show();
}
});
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}

public void doPost() {
HttpClient httpClient = new DefaultHttpClient();
String httpUrl = this.url;
HttpPost request = new HttpPost(httpUrl);
// 传递参数
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("tel", username));
params.add(new BasicNameValuePair("pwd", password));
HttpResponse response;
HttpEntity entity;
try {
entity = new UrlEncodedFormEntity(params, "UTF-8");
request.setEntity(entity);
response = httpClient.execute(request);
// 如果返回状态为200，获得返回的结果
if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
String str = EntityUtils.toString(response.getEntity());
if (str.trim().equals("ok")) {
// 用户登录成功
Intent intent = new Intent();
intent.setClass(LoginActivity.this, MainActivity.class);
startActivity(intent);
LoginActivity.this.finish();
} else {
// 用户登录失败
handler.post(new Runnable() {

@Override
public void run() {
// TODO Auto-generated method stub
Toast.makeText(LoginActivity.this, "账号或密码错误",
Toast.LENGTH_SHORT).show();
}
});
}
}
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

@Override
public void run() {
// TODO Auto-generated method stub
doGet();
}
}
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >

<ImageView
android:id="@+id/img_user"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:contentDescription="@string/login_in"
android:src="@drawable/user" />

<LinearLayout
android:id="@+id/lin_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/img_user"
android:layout_marginTop="20dp"
android:background="#ffffff"
android:orientation="vertical" >

<EditText
android:id="@+id/edt_loginid"
android:layout_width="match_parent"
android:layout_height="45dp"
android:layout_marginLeft="20dp"
android:background="@null"
android:hint="@string/username"
android:textColorHint="#CDCDC1"
android:textSize="16sp" />

<LinearLayout
android:id="@+id/loginline"
android:layout_width="match_parent"
android:layout_height="0.5dp"
android:layout_marginLeft="14dp"
android:layout_marginRight="14dp"
android:background="#D7D7D7"
android:orientation="vertical" >
</LinearLayout>

<EditText
android:id="@+id/edt_loginpassword"
android:layout_width="match_parent"
android:layout_height="45dp"
android:layout_marginLeft="20dp"
android:background="@null"
android:hint="@string/password"
android:inputType="textPassword"
android:textColorHint="#CDCDC1"
android:textSize="16sp" />
</LinearLayout>

<Button
android:id="@+id/btn_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/lin_login"
android:layout_marginBottom="10dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginTop="20dp"
android:background="@drawable/btnbg"
android:includeFontPadding="false"
android:text="@string/login_in"
android:textColor="#ffffff" />

<LinearLayout
android:id="@+id/lin_login_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_below="@+id/btn_login"
android:layout_marginTop="5dp"
android:background="#ffffff"
android:orientation="horizontal" >

<Button
android:id="@+id/btn_login_forgetpassword"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="left|center_vertical"
android:layout_weight="1"
android:background="#00000000"
android:text="@string/forget_password"
android:textColor="#00AFEF"
android:textSize="14sp"
style="?android:attr/buttonBarButtonStyle" />

<Button
android:id="@+id/btn_login_register"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="right|center_vertical"
android:layout_weight="1"
android:background="#00000000"
android:text="@string/register"
android:textColor="#00AFEF"
android:textSize="14sp"
style="?android:attr/buttonBarButtonStyle" />

</LinearLayout>

</RelativeLayout>