Android - 登入系統：登入頁面
Android端：(使用HTTP POST實現)
public class login extends AppCompatActivity {/**登入用**/
private CheckBox remembercheck;//判斷使用者有沒有勾選記住帳號密碼
private EditText username, password;//使用者的帳號密碼欄位
private Button login,register,forgot;//登入按鈕,創建按鈕,忘記密碼按鈕
private String LOGIN_URL;/**目前暫定用在同一個router下傳資料**/
public static String hostip; //獲取裝置IP
public static String hostmac; //獲取裝置MAC
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
LOGIN_URL = getString(R.string.login_url);
username = (EditText) findViewById(R.id.accounts);
password = (EditText) findViewById(R.id.password);
remembercheck = (CheckBox)findViewById(R.id.auto_save_password);
login = (Button) findViewById(R.id.login);
login.setOnClickListener(buttonListener);//login監聽設置
register = (Button) findViewById(R.id.regist);
register.setOnClickListener(buttonListener2);//創建帳號監聽設置
forgot = (Button) findViewById(R.id.forgot);
forgot.setOnClickListener(buttonListener3);//忘記密碼監聽設置
/**先從設定檔userinfo分別抓出username和pw兩個字串來看使用者是否曾經設置過**/
SharedPreferences settings = getSharedPreferences("userinfo",0);
String nowgetname = settings.getString("username", "");
username.setText(nowgetname);
SharedPreferences settings2 = getSharedPreferences("userinfo",0);
String nowgetpw = settings2.getString("pw","");
password.setText(nowgetpw);
hostip = getLocalIpAddress(); //獲取裝置IP
hostmac = getLocalMacAddress();//獲取裝置MAC
}
/**獲取IP >> IPv4的(如果把!inetAddress.isLinkLocalAddress()刪掉，就是IPv6的)**/
public String getLocalIpAddress() {
try {
for (Enumeration<NetworkInterface> en = NetworkInterface
.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf
.getInetAddresses(); enumIpAddr.hasMoreElements();) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()&&!inetAddress.isLinkLocalAddress()) {
return inetAddress.getHostAddress().toString();
}
}
}
} catch (SocketException ex) {
}
return null;
}
/**獲取MAC**/
public String getLocalMacAddress() {
WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo info = wifi.getConnectionInfo();
return info.getMacAddress();
}
/**登入紐是否被按下**/
private Button.OnClickListener buttonListener = new Button.OnClickListener() {
@Override
public void onClick(View v) {
if(remembercheck.isChecked())/**如果登入紐被按下且記住帳密室被勾選的**/
{
/**連接userinfo設定檔，並且找到對應的字串將使用者輸入寫進去**/
SharedPreferences settings = getSharedPreferences("userinfo", 0);
settings.edit().putString("username", username.getText().toString()).commit();
SharedPreferences settings3 = getSharedPreferences("userinfo", 0);
settings3.edit().putString("pw", password.getText().toString()).commit();
}
loginUser();/**呼叫這函式進行使用者資料獲取**/
}
};
private Button.OnClickListener buttonListener2 = new Button.OnClickListener() {/**前往創建會員介面**/
@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setClass(login.this,register.class);
startActivity(intent);
}
};
private Button.OnClickListener buttonListener3 = new Button.OnClickListener() {/**前往忘記密碼查詢介面**/
@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setClass(login.this,forgotpw.class);
startActivity(intent);
}
};
private void loginUser() {/**讀取使用者輸入數據**/
String name = username.getText().toString().trim().toLowerCase();
String pd = password.getText().toString().trim().toLowerCase();
String ip = hostip.trim().toLowerCase();
String mac = hostmac.trim().toLowerCase();
login(name, pd, ip, mac);/**獲取資料成功後，開始進行傳送**/
}
private void login(String name, String password, String ip, String mac) {
class RegisterUser extends AsyncTask<String, Void, String> {
ProgressDialog loading;
Createmem ruc = new Createmem();/**使用Creatmem.class的功能**/
@Override
protected void onPreExecute()
{
super.onPreExecute();/**當按下創見鈕，出現提式窗**/
loading = ProgressDialog.show(login.this, "登入中...",null, true, true);
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
loading.dismiss();/**當提式窗結束，出現登入成功與否的訊息**/
if(s.equals("登入成功!"))/**當字串比對成功即可登入**/
{
Toast.makeText(getApplicationContext(), s, Toast.LENGTH_SHORT).show();
String id = username.getText().toString();/**將使用者唯一帳號變成字串準被傳去首頁**/
Intent intent = new Intent();
intent.setClass(login.this,menu.class);
intent.putExtra("id",id);
startActivity(intent);
finish();
}
else if(s.equals(""))/**如果沒連接到網路**/
{
String show = "請檢查網路連線!";
Toast.makeText(getApplicationContext(), show, Toast.LENGTH_SHORT).show();
}
else/**連接到網路 登入有問題**/
{
Toast.makeText(getApplicationContext(), s, Toast.LENGTH_SHORT).show();
}
}
@Override
protected String doInBackground(String... params)/**將資料放入hashmap**/
{
HashMap<String, String> data = new HashMap<String,String>();
data.put("name",params[0]);
data.put("password",params[1]);
data.put("ip",params[2]);
data.put("mac",params[3]);
String result = ruc.sendPostRequest(LOGIN_URL,data);
return result;
}
}
RegisterUser ru = new RegisterUser();/**傳送資料**/
ru.execute(name, password, ip, mac);
}
}
Android介面布局
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/login_bg"
tools:context="project.rmotex.achat.login">
<ImageView android:id="@+id/image"
android:background="@drawable/login_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="102dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<LinearLayout
android:orientation="vertical"
android:id="@+id/input"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="28.0dip"
android:layout_marginRight="28.0dip"
android:layout_below="@+id/image">
<EditText android:textSize="16.0sp"
android:textColor="#E0E0E0"
android:textColorHint="#E0E0E0"
android:id="@+id/accounts"
android:background="#40000000"
android:gravity="center_vertical"
android:paddingLeft="12.0dip"
android:layout_width="fill_parent"
android:layout_height="44dp"
android:maxLines="1"
android:maxLength="16"
android:hint="Account"
android:textStyle="bold"
android:inputType="textPersonName"/>
<View android:background="#ffc0c3c4"
android:layout_width="fill_parent"
android:layout_height="1.0px"
android:layout_marginLeft="1.0px"
android:layout_marginRight="1.0px" />
<EditText android:textSize="16.0sp"
android:textColor="#E0E0E0"
android:textColorHint="#E0E0E0"
android:id="@+id/password"
android:background="#40000000"
android:hint="Password"
android:textStyle="bold"
android:gravity="center_vertical"
android:paddingLeft="12.0dip"
android:layout_width="fill_parent"
android:layout_height="44dp"
android:maxLines="1"
android:maxLength="16"
android:inputType="textVisiblePassword" />
<Button
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:background="#40000000"
android:text="Sign In"
android:textStyle="bold"
android:id="@+id/login"
android:paddingTop="5.0dip"
android:layout_marginLeft="12.0dip"
android:layout_marginTop="12.0dip"
android:layout_marginRight="12.0dip"
android:textSize="20.0sp"
/>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="30.0dip"
android:layout_marginTop="8.0dip"
android:layout_marginRight="30.0dip"
android:layout_below="@id/login"
android:layout_weight="1" >
<CheckBox android:textSize="16.0sp"
android:layout_marginTop="8.0dip"
android:textColor="#ffffffff"
android:layout_alignParentLeft="true"
android:id="@+id/auto_save_password"
android:background="#00000000"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="false"
android:text="KEEP"
android:gravity="right|center"
android:textStyle="bold"
/>
<Button android:textSize="16.0sp"
android:textColor="#ffffffff"
android:layout_alignParentRight="true"
android:gravity="left|center"
android:id="@+id/regist"
android:background="#00000000"
android:clickable="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:paddingLeft="18.0dip"
android:text="Sign Up" />
</RelativeLayout>
<Button android:textSize="12.0sp"
android:textColor="#ffffffff"
android:id="@+id/forgot"
android:background="#00000000"
android:clickable="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:layout_marginLeft="12.0dip"
android:layout_marginRight="12.0dip"
android:text="Forgot Password?"
android:layout_gravity="center_horizontal" />
</LinearLayout>
</RelativeLayout>
這裡使用XAMPP建立的Server，將相對應的PHP放置在htdocs這資料夾底下 登入用PHP(Server必須先完成與MYSQL的連線)
<?php
/**用於使用者登入系統**/
if($_SERVER['REQUEST_METHOD']=='POST'){//限制條件為POST
$name = $_POST['name'];
$password = $_POST['password'];
if($name == '' || $password == '')
{
echo '請確實輸入帳號密碼!';
}
else if($name == '')
{
echo '請輸入帳號!';
}
else if($password == '')
{
echo '請輸入密碼!';
}
else
{
require_once('dbConnect.php');
$sql = "SELECT * FROM userinfo WHERE name='$name'";//先檢查帳號是否存在
$check = mysqli_fetch_array(mysqli_query($con,$sql));
if(isset($check)==false)
{
echo '此帳號不存在!';
}
else//檢查整個帳戶
{
$sqll = "SELECT * FROM userinfo WHERE name='$name' AND password='$password'";
$checkk = mysqli_fetch_array(mysqli_query($con,$sqll));
if(isset($checkk)==false)
{
echo '帳號正確，請檢查密碼!';
}
else
{
echo '登入成功!';
$sqlll = "UPDATE userinfo SET online = NOT online WHERE name = '$name'";//修改上線狀態
mysqli_query($con,$sqlll);
}
}
mysqli_close($con);
}
}
else
{
echo 'Error';
}
?>
留言
張貼留言