Cara Menginput Ke Database Menggunakan Android - (JSON)

Ilmu Informatika : Cara Menginput Ke Database Menggunakan Android - (JSON). Selamat malam sobat...
Akhirnya bisa juga menginput ke database mysql menggunakan android, :-D kali ini saya akan bercerita dikit nih, jadi saat menginput, mengedit, atau menghapus suatu data yang tersimpan dalam database (SQL) menggunakan android, maka urutan prosesnya dalah sebagai berikut :

ANDROID (Device) -> PHP (Web Server) -> SQL

Skema Proses Input Data menggunakan JSON

Nah, jadi urutan programnya menggunakan 3 bahasa pemrograman, android ke Web Server (PHP). Tidak bisa langsung dari android ke SQL :-)
Untuk Android ke PHP ini dibutuhkan translater bahasa yang dalam hal ini adalah JSON. jadi JSON ini berfungsi untuk mentranslatekan bahasa pemrograman satu ke bahasa pemrograman lain, semisal dari java di hubungkan ke php, maka yang bertindak untuk menjembatani adalah JSON ini.

Oke, langsung ke programnya ya :-)
1. Pertama-tama buatlah Databasenya dulu.

Create database mahasiswa;
CREATE TABLE `mahasiswa`.`biodata`
`nim` varchar(14) NOT NULL,
`nama` varchar(50) NOT NULL,
`prodi` varchar(25) NOT NULL,
PRIMARY KEY (`nim`)
);

2. Kemudian buatlah tampilan program androidnya seperti berikut :

<?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" >

<ScrollView
 android:layout_height="match_parent"
 android:layout_width="match_parent"
 android:scrollbarStyle="insideInset">
 <LinearLayout
 android:layout_height="match_parent"
 android:layout_width="match_parent"
 android:orientation="vertical">

 <EditText
 android:id="@+id/nim"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_marginLeft="10dp"
 android:layout_marginTop="10dp"
 android:hint="NIM"
 android:paddingRight="10dp" />

 <EditText
 android:layout_height="wrap_content"
 android:layout_width="match_parent"
 android:id="@+id/nama"
 android:layout_marginTop="10dp"
 android:layout_marginLeft="10dp"
 android:paddingRight="10dp"
 android:hint="Nama"
 />

 <EditText
 android:layout_height="wrap_content"
 android:layout_width="match_parent"
 android:id="@+id/prodi"
 android:layout_marginTop="10dp"
 android:layout_marginLeft="10dp"
 android:paddingRight="10dp"
 android:hint="Prodi"/>

 <Button
 android:layout_height="wrap_content"
 android:layout_width="match_parent"
 android:id="@+id/btnsubmit"
 android:layout_marginTop="10dp"
 android:layout_marginLeft="10dp"
 android:paddingRight="10dp"
 android:text="submit"
 />
 </LinearLayout>
 </ScrollView>
</LinearLayout>

3. Kemudian Buat Class JSONParser.java

package com.isrul.cobajson;

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);
 
            HttpResponse httpResponse = httpClient.execute(httpPost);
            HttpEntity httpEntity = httpResponse.getEntity();
            is = httpEntity.getContent();
 
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
 
        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<NameValuePair> params) {
 
        // 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);
                HttpEntity httpEntity = httpResponse.getEntity();
                is = httpEntity.getContent();
 
            } 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);
                HttpEntity httpEntity = httpResponse.getEntity();
                is = httpEntity.getContent();
            }
 
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
 
        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;
 
    }
}

4. pada MainActivity.java ubah seperti ini :

package com.isrul.cobajson;

import java.util.ArrayList;
import java.util.List;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONObject;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {
 EditText nim,nama,prodi;
    Button submit;
    JSONParser jParser = new JSONParser();
    ProgressDialog pDialog;
    private static String url = "http://10.0.2.2/insert/insert.php";
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        nim = (EditText)findViewById(R.id.nim);
        nama= (EditText)findViewById(R.id.nama);
        prodi=(EditText)findViewById(R.id.prodi);
 
        submit = (Button)findViewById(R.id.btnsubmit);
 
        submit.setOnClickListener(new View.OnClickListener()
        {
 
            @Override
            public void onClick(View arg0) {
                new input().execute();
            }
        });
    }
 
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
 
    public class input extends AsyncTask<String, String, String>
    {
 
        String success;
 
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            pDialog = new ProgressDialog(MainActivity.this);
            pDialog.setMessage("Lagi Proses bro...");
            pDialog.setIndeterminate(false);
            pDialog.show();
        }
 
        @Override
        protected String doInBackground(String... arg0) {
            String strNIM = nim.getText().toString();
            String strNama = nama.getText().toString();
            String strProdi = prodi.getText().toString();
 
            List<NameValuePair> params = new ArrayList<NameValuePair>();
            params.add(new BasicNameValuePair("nim", strNIM));
            params.add(new BasicNameValuePair("nama", strNama));
            params.add(new BasicNameValuePair("prodi", strProdi));
 
            JSONObject json = jParser.makeHttpRequest(url, "POST", params);
 
            try {
                success = json.getString("success");
 
            } catch (Exception e) {
                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(), "Simpan Sukses", Toast.LENGTH_LONG).show();
            }
            else
            {
                Toast.makeText(getApplicationContext(), "Data Gagal Diinput", Toast.LENGTH_LONG).show();
 
            }
        }
    }
}

5. Jangan lupa tambahkan sedikit pengaturan yang ada di AndroidManifest-nya

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.isrul.cobajson"
 android:versionCode="1"
 android:versionName="1.0" >

 <uses-sdk
 android:minSdkVersion="8"
 android:targetSdkVersion="19" />
 <uses-permission android:name="android.permission.INTERNET"/>

 <application
 android:allowBackup="true"
 android:icon="@drawable/ic_launcher"
 android:label="@string/app_name"
 android:theme="@style/AppTheme" >
 <activity
 android:name="com.isrul.cobajson.MainActivity"
 android:label="@string/app_name" >
 <intent-filter>
 <action android:name="android.intent.action.MAIN" />

 <category android:name="android.intent.category.LAUNCHER" />
 </intent-filter>
 </activity>
 </application>

</manifest>

6. Dan yang terakhir tambahkan insert.php yang disimpan di C:\xampp\htdocs\insert\insert.php

<?php

$conn = mysql_connect("localhost","root","");
mysql_select_db("mahasiswa"); 

$NIM = $_POST['nim'];
$NAMA= $_POST['nama'];
$PRODI = $_POST['prodi'];
 
header('Content-Type: text/xml');
 
$query = "insert into biodata (nim, nama, prodi) values ('$NIM','$NAMA','$PRODI')";

$hasil = mysql_query($query);
if($hasil){
 $response["success"] = "1";
    $response["message"] = "Data sukses diinput";
    echo json_encode($response);
} else{
 $response["success"] = "0";
    $response["message"] = "Maaf , terjadi kesalahan";
 // echoing JSON response
    echo json_encode($response);
}
?>

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