1. Android dan database 2
M. Taufiq, M. Kom

2. Android dan Database server
Yang dibutuhkan dalam pembuatan.
Sebuah PC/LAPTOP (difungsikan sebagai server)
Sebuah koneksi (WIFI hotspot)
MySQL server (Xampp, lamp dll)
Handphone
PHP editor (notepad, sublime, dll)

4. Yang akan kita buat
Install server mysql database dan apache di laptop (Xampp)
Buat database di mysql (database login)
Membuat file eksekusi dengan php (login.php)
Menambahkan dependencies (bulid.gradle (modul:app))
Membuat program untuk mobile

5. database CREATE DATABASE login
CREATE TABLE IF NOT EXISTS users ( id int(4) NOT NULL, username varchar(32) NOT NULL, password varchar(64) NOT NULL, varchar(32) NOT NULL, accountname varchar(32) NOT NULL, status int(4) NOT NULL DEFAULT '1' ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=latin1;
ALTER TABLE users ADD PRIMARY KEY (id);
INSERT INTO users (id, username, password, , accountname, status) VALUES (1, 'admin', 'abcd1234', 'Admin', 1);

6. login.php
<?php define('HOST','localhost'); define('USER','root'); define('PASS',''); define('DB',‘login'); $con = mysqli_connect(HOST,USER,PASS,DB) or die('Unable to Connect'); if($_SERVER['REQUEST_METHOD']=='POST'){ //Getting values $username = $_POST[' ']; $password = $_POST['password']; //Creating sql query $sql = "SELECT * FROM users WHERE ='$username' AND password='$password'"; //executing query $result = mysqli_query($con,$sql); //fetching result $check = mysqli_fetch_array($result); //if we got some result if(isset($check)){ //displaying success echo "success"; }else{ //displaying failure echo "failure"; } mysqli_close($con); ?>

7. App.gradle
dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:23.2.0' compile 'com.android.support:design:23.2.0' compile 'com.mcxiaoke.volley:library-aar:1.0.0' }

8. Main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android=" xmlns:tools=" android:layout_width="match_parent" android:layout_height="match_parent“ android:orientation="vertical" > <ImageView android:layout_gravity="center_horizontal" android:layout_width="150dp" android:layout_height="150dp" /> <android.support.design.widget.TextInputLayout android:layout_height="wrap_content" android:layout_marginTop="8dp" android:layout_marginBottom="8dp"> <EditText android:layout_width="match_parent“ android:inputType="text Address" android:hint=" " /> </android.support.design.widget.TextInputLayout> <EditText android:inputType="textPassword" android:hint="Password"/> <android.support.v7.widget.AppCompatButton android:layout_width="fill_parent" android:layout_marginTop="24dp" android:layout_marginBottom="24dp" android:padding="12dp" android:text="Login"/> </LinearLayout>

9. import android. app. ProgressDialog; import android. content
import android.app.ProgressDialog; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.AppCompatButton; import android.view.View; import android.widget.EditText; import android.widget.Toast; import com.android.volley.AuthFailureError; import com.android.volley.Request; import com.android.volley.Response; import com.android.volley.VolleyError; import com.android.volley.toolbox.StringRequest; import com.android.volley.toolbox.Volley; import java.util.HashMap; import java.util.Map; public class MainActivity extends AppCompatActivity { //Defining views private EditText editText ; private EditText editTextPassword; private Context context; private AppCompatButton buttonLogin; private ProgressDialog protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); context = MainActivity.this; //Initializing views pDialog = new ProgressDialog(context); editText = (EditText) findViewById(R.id.editText ); editTextPassword = (EditText) findViewById(R.id.editTextPassword); buttonLogin = (AppCompatButton) findViewById(R.id.buttonLogin); //Adding click listener buttonLogin.setOnClickListener(new View.OnClickListener() public void onClick(View v) { login(); } }); //editTextPassword.setText("abcd1234"); } private void login() { //Getting values from edit texts final String = editText .getText().toString().trim(); final String password = editTextPassword.getText().toString().trim(); pDialog.setMessage("Login Process..."); showDialog(); //Creating a string request StringRequest stringRequest = new StringRequest(Request.Method.POST, AppVar.LOGIN_URL, new Response.Listener<String>() public void onResponse(String response) { //If we are getting success from server if (response.contains(AppVar.LOGIN_SUCCESS)) { hideDialog(); gotoCourseActivity(); } else { hideDialog(); //Displaying an error message on toast Toast.makeText(context, "Invalid username or password", Toast.LENGTH_LONG).show(); } } }, new Response.ErrorListener() public void onErrorResponse(VolleyError error) { //You can handle error here if you want hideDialog(); Toast.makeText(context, "The server unreachable", Toast.LENGTH_LONG).show(); } }) protected Map<String, String> getParams() throws AuthFailureError { Map<String, String> params = new HashMap<>(); //Adding parameters to request params.put(AppVar.KEY_ , ); params.put(AppVar.KEY_PASSWORD, password); //returning parameter return params; } }; //Adding the string request to the queue Volley.newRequestQueue(this).add(stringRequest); } private void gotoCourseActivity() { Intent intent = new Intent(context, CourseActivity.class); startActivity(intent); finish(); } private void showDialog() { if (!pDialog.isShowing()) pDialog.show(); } private void hideDialog() { if (pDialog.isShowing()) pDialog.dismiss(); } }

10. Appvar.java
public class AppVar { //URL to our login.php file, url bisa diganti sesuai dengan alamat server kita public static final String LOGIN_URL = " //Keys for and password as defined in our $_POST['key'] in login.php public static final String KEY_ = " "; public static final String KEY_PASSWORD = "password"; //If server response is equal to this that means login is successful public static final String LOGIN_SUCCESS = "success"; }

11. Activity_course.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android=" xmlns:tools=" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".CourseActivity"> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" /> </RelativeLayout>

12. Androidmanifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android=" package=“nama package"> <uses-permission android:name="android.permission.INTERNET" /> <application android:allowBackup="true" android:supportsRtl="true" <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".CourseActivity" android:label="agusharyanto.net"> </application> </manifest>