registerdanloginandroidmenggunakanasynctask-140112222304-phpapp01.pdf

Yusuf Mufti [email protected] 089637319180 freelance programmer

1

Register dan Login Android Menggunakan Async Task ke

Database Server

DAPATKAN SEGERA

Buku Panduan Mudah Pengembangan

Google Map Android (integrasi dengan

MySQL dan SQLite) + CD Source code

Penerbit : Andi Offset

Terbit : April 2015

Telah tersedia di Gramedia, Togamas,

Social Agency dan beberapa toko buku

online.


2

Register dan Login Android Menggunakan Async Task

Ke Database Server

Oleh Yusuf Mufti [email protected] yusufmufti.com

Membuat Register / Pendaftaran dan Login pada Android pada tulisan masih memiliki

kekurangan seperti belum ada pengecekan apakah email telah terdaftar, komunikasi

data login masih menggunakan method GET, dan belum menggunakan library seperti

volley.

Langkah-langkah yang akan dibahas pada tulisan ini yaitu

1. Membuat database

2. Membuat PHP untuk handle request

3. Membuat projek Android

A. Membuat Database.

Buatlah database dengan nama login dan buatlah tabel user. Adapun struktur tabel

user sebagai berikut ini.

B. PHP untuk handle request

Ada 3 file PHP yang kita akan buat, yaitu koneksi.php,register.php dan login.php dan

simpan di htdocs dengan folder login.

- File koneksi.php

- File register.php


3

$telepon=$_POST['telepon'];

$nama=$_POST['nama'];

include "koneksi.php";

$namaTabel = "user";

header('Content-Type: text/xml');

$query = "INSERT INTO $namaTabel

VALUES('','$nama','$email','$password','$alamat','$telepon')";

$hasil = mysql_query($query);

if($hasil)

{

$response["success"] = "1";

$response["message"] = "Data sukses diinput";

echo json_encode($response);

}

else

{$response["success"] = "0";

$response["message"] = "Maaf , terjadi kesalahan";

// echoing JSON response


}

?>

- File login.php


4

$h['nama'] = $data['nama'] ;

$h['alamat'] = $data['alamat'] ;

$h['email'] = $data['email'];

array_push($response["login"], $h);

}



}

else {


$response["message"] = "Tidak ada data";


}

?>

C. Membuat Projek Android

- Membuat projek Android dengan klik File > New > Android Application Project,

kemudian konfigurasi untuk penamaan package, icon, dan file xml.

- Membuat file xml di folder res layout

Sebelum membahas kodenya, saya ingin menunjukkan struktur file di folder res sebagai

berikut


5

1. activity_dashboard.xml


6

YUSUF MUFTI

Freelance Programmer

www.yusufmufti.com

Email : [email protected]

SMS - WA : +62 896 373 191 80

FB : yusufmufti


7

2. akunku.xml


8

android:text="AKUN" android:textAppearance="?android:attr/textAppearanceLarge" />

3. register.xml


9

android:paddingLeft="10dp"

android:text="Registration"

android:textSize="25sp"

android:textColor="#aabb00"

android:gravity="center_horizontal"/>


10

android:id="@+id/address"

android:layout_marginTop="10dp"

android:layout_marginLeft="10dp"

android:paddingRight="10dp"

android:hint="insert your address"

android:minLines="3"/>

4. login.xml


11


12


13

File java terdiri atas 8 file java seperti terlihat pada gambar berikut.

a. ConnectionDetector.java

package com.cekinternet;

/*

* Class untuk pengecekan internet

*/

import android.content.Context;

import android.net.ConnectivityManager;

import android.net.NetworkInfo;

public class ConnectionDetector {

private Context _context;

public ConnectionDetector(Context context) {

this._context = context;

}

public boolean isConnectingToInternet() {

ConnectivityManager connectivity = (ConnectivityManager)

_context

.getSystemService(Context.CONNECTIVITY_SERVICE);

if (connectivity != null) {

NetworkInfo[] info = connectivity.getAllNetworkInfo();

if (info != null)

for (int i = 0; i < info.length; i++)

if (info[i].getState() ==

NetworkInfo.State.CONNECTED) {

return true;

}


14

}

return false;

}

}

b. Akunku.java

/**

* author : Yusuf Mufti

* email : [email protected]

* web : yusufmufti.com

*/

package com.login;

import java.util.HashMap;

import org.json.JSONArray;

import android.app.Activity;

import android.app.ProgressDialog;

import android.content.Intent;

import android.os.Bundle;

import android.text.Html;

import android.view.View;

import android.widget.Button;

import android.widget.ListView;

import android.widget.TextView;

import android.widget.Toast;

import com.yusfa.login.R;

public class Akunku extends Activity{

//inisiasi variabel yang akan digunakan

Button logout;

SessionManager session;

ListView lv;

ProgressDialog pDialog;

JSONArray contacts = null;

String email, name;


15

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.akunku);

//membuat session untuk user

session = new SessionManager(getApplicationContext());

Toast.makeText(getApplicationContext(), "User Login Status: " +

session.isLoggedIn(), Toast.LENGTH_LONG).show();

session.checkLogin();

HashMap user = session.getUserDetails();

name = user.get(SessionManager.KEY_NAME);

email=user.get(SessionManager.KEY_EMAIL);

TextView status = (TextView)findViewById(R.id.status);

status.setText(Html.fromHtml("Welcome,"+name+" "));

//inisiasi tombol Logout dan memberi fungsi klik

logout = (Button)findViewById(R.id.logout);

logout.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View arg0) {


session.logoutUser();

finish();

}

});

}

@Override

public void onBackPressed() {


Intent i = new Intent(getApplicationContext(), Dashboard.class);

i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

startActivity(i);

finish();

}

}


16

c. AlertDialogManager.java

package com.login;


import android.app.AlertDialog;


import android.content.DialogInterface;

public class AlertDialogManager {

/**

* androidhive

* */

@SuppressWarnings("deprecation")

public void showAlertDialog(Context context, String title, String message,

Boolean status) {

AlertDialog alertDialog = new AlertDialog.Builder(context).create();

// Setting Dialog Title

alertDialog.setTitle(title);

// Setting Dialog Message

alertDialog.setMessage(message);

if(status != null)

// Setting alert dialog icon

alertDialog.setIcon((status) ? R.drawable.success : R.drawable.fail);

// Setting OK Button

alertDialog.setButton("OK", new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int which) {

}

});

// Showing Alert Message

alertDialog.show();

}

}


17

d. Dashboard.java

/**




*/

package com.login;


import android.app.AlertDialog;

import android.content.DialogInterface;




import android.view.View.OnClickListener;



import com.cekinternet.ConnectionDetector;


public class Dashboard extends Activity implements OnClickListener {

Button exit, pasang;

Intent a;

ConnectionDetector cd;

Boolean isInternetPresent = false;

AlertDialogManager alert = new AlertDialogManager();

@Override



setContentView(R.layout.activity_dashboard);

//Inisiasi

exit=(Button)findViewById(R.id.exit);

pasang =(Button)findViewById(R.id.pasang);

cekInternet();


18

//memberi event klik

exit.setOnClickListener(this);

}

//menghandle klik

@Override

public void onClick(View v) {


switch (v.getId()) {

case R.id.pasang:

a = new Intent(getApplicationContext(), Akunku.class);

startActivity(a);

break;

case R.id.exit:

Dialog();

break;

default:

break;

}

}

//dialog untuk keluar

public void Dialog(){

AlertDialog.Builder builder= new AlertDialog.Builder(this);

builder.setMessage("Keluar dari Aplikasi ?");

builder.setPositiveButton("Batal", new

DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int arg1) {


dialog.dismiss();

}

});

builder.setNegativeButton("Ya", new

DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface arg0, int arg1) {


19


finish();

}

});

builder.create().show();

}

//menghandle tombol back smartphone

@Override



Dialog();

}

public void cekInternet(){

//memanggil pengecekan internet

cd = new

ConnectionDetector(getApplicationContext());

isInternetPresent = cd.isConnectingToInternet();

if (isInternetPresent) {

Toast.makeText(getApplicationContext(),

"Anda Memiliki Koneksi Internet",

Toast.LENGTH_SHORT)

.show();

pasang.setOnClickListener(this);

} else {

alert.showAlertDialog(Dashboard.this, "Peringatan",

"Internet tidak tersedia, Anda harus mengecek koneksi internet.", false);

}

}

}


20

e. JSONParser.java

package com.login;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.UnsupportedEncodingException;

import java.util.List;

import org.apache.http.HttpEntity;

import org.apache.http.HttpResponse;

import org.apache.http.NameValuePair;

import org.apache.http.client.ClientProtocolException;

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.client.utils.URLEncodedUtils;

import org.apache.http.impl.client.DefaultHttpClient;

import org.json.JSONException;

import org.json.JSONObject;

import android.util.Log;

public class JSONParser {

static InputStream is = null;

static JSONObject jObj = null;

static String json = "";

// constructor

public JSONParser() {

}

public JSONObject getJSONFromUrl(String url) {

// Making HTTP request

try {

// defaultHttpClient

DefaultHttpClient httpClient = new DefaultHttpClient();

HttpPost httpPost = new HttpPost(url);


21

HttpResponse httpResponse = httpClient.execute(httpPost);

HttpEntity httpEntity = httpResponse.getEntity();

is = httpEntity.getContent();

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

} catch (ClientProtocolException e) {


} catch (IOException e) {


}

try {

BufferedReader reader = new BufferedReader(new

InputStreamReader(

is, "iso-8859-1"), 8);

StringBuilder sb = new StringBuilder();

String line = null;

while ((line = reader.readLine()) != null) {

sb.append(line + "\n");

}

is.close();

json = sb.toString();

} catch (Exception e) {

Log.e("Buffer Error", "Error converting result " +

e.toString());

}

// try parse the string to a JSON object

try {

jObj = new JSONObject(json);

} catch (JSONException e) {

Log.e("JSON Parser", "Error parsing data " + e.toString());

}

// return JSON String

return jObj;

}

public JSONObject makeHttpRequest(String url, String method,

List params) {


22

// Making HTTP request

try {

// check for request method

if (method == "POST") {

// request method is POST

// defaultHttpClient

DefaultHttpClient httpClient = new

DefaultHttpClient();

HttpPost httpPost = new HttpPost(url);

httpPost.setEntity(new

UrlEncodedFormEntity(params));

HttpResponse httpResponse =

httpClient.execute(httpPost);



} else if (method == "GET") {

// request method is GET

DefaultHttpClient httpClient = new

DefaultHttpClient();

String paramString =

URLEncodedUtils.format(params, "utf-8");

url += "?" + paramString;

HttpGet httpGet = new HttpGet(url);

HttpResponse httpResponse =

httpClient.execute(httpGet);



}

} catch (UnsupportedEncodingException e) {


} catch (ClientProtocolException e) {


} catch (IOException e) {


}

try {


23

BufferedReader reader = new BufferedReader(new

InputStreamReader(

is, "iso-8859-1"), 8);

StringBuilder sb = new StringBuilder();

String line = null;

while ((line = reader.readLine()) != null) {

sb.append(line + "\n");

}

is.close();

json = sb.toString();


Log.e("Buffer Error", "Error converting result " +

e.toString());

}

// try parse the string to a JSON object

try {

jObj = new JSONObject(json);

} catch (JSONException e) {

Log.e("JSON Parser", "Error parsing data " + e.toString());

}

// return JSON String

return jObj;

}

}


24

f. Login.java

/**




*/

package com.login;

import java.util.ArrayList;


import org.json.JSONArray;


import com.cekinternet.ConnectionDetector;





import android.os.AsyncTask;


import android.util.Log;


import android.view.View.OnClickListener;


import android.widget.EditText;

import android.widget.TextView;


public class Login extends Activity implements OnClickListener{

Button register, login;

Intent a;

EditText username, password;

String url, success;

SessionManager session;

AlertDialogManager alert = new AlertDialogManager();

ConnectionDetector cd;

Boolean isInternetPresent = false;


25

@Override




setContentView(R.layout.login);

session = new SessionManager(getApplicationContext());

Toast.makeText(getApplicationContext(), "User Login Status: " +

session.isLoggedIn(), Toast.LENGTH_LONG).show();

register = (Button)findViewById(R.id.register);

login = (Button)findViewById(R.id.submit);

username = (EditText)findViewById(R.id.username);

password = (EditText)findViewById(R.id.password);

cekInternet();

}

@Override

public void onClick(View v) {


switch (v.getId()) {

case R.id.register:

a = new Intent (Login.this, Register.class);

startActivity(a);

break;

case R.id.submit:

url = "http://10.0.2.2:8080/login/login.php?" +

"username="

+username.getText().toString()+"&password=" + password.getText().toString();

if(username.getText().toString().trim().length()>0

&&password.getText().toString().trim().length()>0){

new AmbilData().execute();

}else{

alert.showAlertDialog(Login.this, "Login failed..", "Silakan

isi username adan password", false);

}

break;


26

default:

break;

}

}

public class AmbilData extends AsyncTask{

ArrayList contactList = new ArrayList

();


@Override

protected void onPreExecute() {


super.onPreExecute();

pDialog = new ProgressDialog(Login.this);

pDialog.setMessage("Loading Data ...");

pDialog.setIndeterminate(false);

pDialog.setCancelable(true);

pDialog.show();

}

@Override

protected String doInBackground(String... arg0) {


JSONParser jParser = new JSONParser();

JSONObject json = jParser.getJSONFromUrl(url);

try {

success = json.getString("success");

Log.e("error", "nilai sukses=" + success);

JSONArray hasil = json.getJSONArray("login");

if (success.equals("1")){

for (int i = 0; i < hasil.length(); i++) {


27

JSONObject c = hasil.getJSONObject(i);

// Storing each json item in variable

String nama = c.getString("nama").trim();

String email = c.getString("email").trim();

session.createLoginSession(nama, email);

Log.e("ok", " ambil data");

}

}

else {

Log.e("erro", "tidak bisa ambil data 0");

}


// TODO: handle exception

Log.e("erro", "tidak bisa ambil data 1");

}

return null;

}

@Override

protected void onPostExecute(String result) {


super.onPostExecute(result);

pDialog.dismiss();

if(success.equals("1")){

a = new Intent (Login.this, Akunku.class);

startActivity(a);

finish();

}

else{

TextView keterangan =

(TextView)findViewById(R.id.keterangan);

keterangan.setText("Maaf username atau password Anda

Salah");

alert.showAlertDialog(Login.this, "Login failed..",

"Username/Password is incorrect", false);

}

}


28

}

@Override





startActivity(i);

finish();

}

//cek internet

public void cekInternet(){

//memanggil pengecekan internet

cd = new ConnectionDetector(getApplicationContext());

isInternetPresent = cd.isConnectingToInternet();

// check for Internet status

if (isInternetPresent) {

Toast.makeText(getApplicationContext(),

"Anda Memiliki Koneksi Internet",

Toast.LENGTH_SHORT)

.show();

register.setOnClickListener(this);

login.setOnClickListener(this);

} else {

alert.showAlertDialog(Login.this, "Peringatan",

"Internet tidak tersedia, Anda harus

mengecek koneksi internet.", false);

}

}

}


29

g. Register.java

/**




*/

package com.login;

import java.util.ArrayList;

import java.util.List;

import org.apache.http.NameValuePair;

import org.apache.http.message.BasicNameValuePair;






import android.os.AsyncTask;




import android.widget.EditText;


public class Register extends Activity{


JSONParser jsonParser = new JSONParser();

EditText email, password, alamat, telepon, nama;

private static String url = "http://10.0.2.2:8080/login/register.php";

Button submit;

@Override




setContentView(R.layout.register);

email =(EditText)findViewById(R.id.email);

password=(EditText)findViewById(R.id.password);

alamat =(EditText)findViewById(R.id.address);


30

telepon =(EditText)findViewById(R.id.telepon);

nama =(EditText)findViewById(R.id.nama);

submit = (Button)findViewById(R.id.submit);

submit.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View arg0) {


new InputData().execute();

}

});

}

public class InputData extends AsyncTask{

String success;

@Override

protected void onPreExecute() {

super.onPreExecute();

pDialog = new ProgressDialog(Register.this);

pDialog.setMessage("Proses mendaftar...");

pDialog.setIndeterminate(false);

pDialog.show();

}

@Override

protected String doInBackground(String... args) {

String strnama = nama.getText().toString();

String stralamat = alamat.getText().toString();

String stremail = email.getText().toString();

String strpassword = password.getText().toString();

String strtelepon = telepon.getText().toString();

List params = new

ArrayList();

params.add(new

BasicNameValuePair("nama", strnama));

params.add(new

BasicNameValuePair("alamat", stralamat));


31

params.add(new

BasicNameValuePair("email", stremail));

params.add(new

BasicNameValuePair("password", strpassword));

params.add(new

BasicNameValuePair("telepon", strtelepon));

JSONObject json =

jsonParser.makeHttpRequest(url,

"POST", params);

try {

success = json.getString("success");


Toast.makeText(getApplicationContext(), "Error",

Toast.LENGTH_LONG).show();

}

return null;

}

protected void onPostExecute(String file_url) {

// dismiss the dialog once done

pDialog.dismiss();

if (success.equals("1")) {

Toast.makeText(getApplicationContext(), "Regitrasi sukses",

Toast.LENGTH_LONG).show();

} else {

Toast.makeText(getApplicationContext(), "Registrasi

gagal", Toast.LENGTH_LONG).show();

}

}

}

@Override





32


startActivity(i);

finish();

}

}

h. SessionManager.java

package com.login;

/**

* source code androidhive

*/


import android.annotation.SuppressLint;



import android.content.SharedPreferences;

import android.content.SharedPreferences.Editor;

@SuppressLint("CommitPrefEdits")

public class SessionManager {

// Shared Preferences

SharedPreferences pref;

// Editor for Shared preferences

Editor editor;

// Context

Context _context;

// Shared pref mode

int PRIVATE_MODE = 0;

// nama sharepreference

private static final String PREF_NAME = "Sesi";

// All Shared Preferences Keys

private static final String IS_LOGIN = "IsLoggedIn";

public static final String KEY_NAME = "name";

public static final String KEY_EMAIL = "email";

// Constructor


33

public SessionManager(Context context){

this._context = context;

pref = _context.getSharedPreferences(PREF_NAME,

PRIVATE_MODE);

editor = pref.edit();

}

/**

* Create login session

* */

public void createLoginSession(String name, String email){

// Storing login value as TRUE

editor.putBoolean(IS_LOGIN, true);

editor.putString(KEY_NAME, name);

editor.putString(KEY_EMAIL, email);

editor.commit();

}

/**

* Check login method wil check user login status

* If false it will redirect user to login page

* Else won't do anything

* */

public void checkLogin(){

// Check login status

if(!this.isLoggedIn()){

Intent i = new Intent(_context, Login.class);

i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

_context.startActivity(i);

//((Activity)_context).finish();

}

}

/**

* Get stored session data

* */

public HashMap getUserDetails(){

HashMap user = new HashMap();


34

user.put(KEY_NAME, pref.getString(KEY_NAME, null));

user.put(KEY_EMAIL, pref.getString(KEY_EMAIL, null));

return user;

}

/**

* Clear session details

* */

public void logoutUser(){

// Clearing all data from Shared Preferences

editor.clear();

editor.commit();

Intent i = new Intent(_context, Login.class);

i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

_context.startActivity(i);

}

public boolean isLoggedIn(){

return pref.getBoolean(IS_LOGIN, false);

}

}

Sedikit tambahan,

1. Untuk file dimens.xml di dalam folder res /value pastikan terdapat kode berikut

ini

16dp 16dp

2. Kemudian untuk styles.xml di dalam folder res/value pastikan terdapat kode

berikut ini, jika tidak ada ketikalah di dalam

center_vertical


35

wrap_content

wrap_content

center_horizontal

2dp

16dp

bold

#ffffff

@null

3. Kode tomboladd.xml di dalam folder res/drawable-hdpi

4. Kode tombolexit.xml di dalam folder res/drawable-hdpi


36

5. Androidmanifest.xml editlah menjadi seperti berikut ini

Anda telah selesai membuat projek Register dan Login. Klik kanan projek dan pilih Run

As Android Application Project.

SOURCE CODE dapat diunduh di SINI

Documents

registerdanloginandroidmenggunakanasynctask-140112222304-phpapp01.pdf