CustomList View With JSONobject and Servlet Using Android Asynchronous Http Client | Tutorial 4

Android Side : Create project in android use EmptyActivity.

Visit First Tutorial for Connection Between Server and Android
click here How to Connect Android App with Java Server?

Add Library  in android side >>http://loopj.com/android-async-http/

YouTube Channel :

MainActivity: put below code in your MainActivity.java

MainActivity

 package com.example.aaru.jsonapp;  
 import android.support.v7.app.AppCompatActivity;  
 import android.os.Bundle;  
 import android.widget.ListView;  
 import android.widget.Toast;  
 import com.loopj.android.http.AsyncHttpClient;  
 import com.loopj.android.http.JsonHttpResponseHandler;  
 import org.json.JSONArray;  
 import org.json.JSONException;  
 import org.json.JSONObject;  
 import java.lang.reflect.Array;  
 import java.util.ArrayList;  
 import cz.msebera.android.httpclient.Header;  
 public class MainActivity extends AppCompatActivity {  
   ListView listView;  
   ArrayList<StudentBeam>allist;  
   AsyncHttpClient asyncHttpClient;  
   String My_URL="http://192.168.43.157:8080/StudentApp/StudentServlet";  
   StudentBeam beam;  
   @Override  
   protected void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState);  
     setContentView(R.layout.activity_main);  
     allist=new ArrayList<>();  
     getData();  
     Toast.makeText(MainActivity.this, "onSuccess", Toast.LENGTH_SHORT).show();  
     listView= (ListView) findViewById(R.id.listView);  
   }  
   private void getData() {  
     //add asynhttp client lib.....  
     asyncHttpClient=new AsyncHttpClient();  
     asyncHttpClient.get(My_URL,new JsonHttpResponseHandler(){  
       @Override  
       public void onSuccess(int statusCode, Header[] headers, JSONArray response) {  
         super.onSuccess(statusCode, headers, response);  
         for (int i=0;i<response.length(); i++){  
           try {  
             Toast.makeText(MainActivity.this, "onSuccess", Toast.LENGTH_SHORT).show();  
             JSONObject object=response.getJSONObject(i);  
             beam=new StudentBeam(object.get("name").toString(),object.get("address").toString(),object.get("phone").toString());  
             //also check json object key  
             Toast.makeText(MainActivity.this, "onSuccess"+beam.getName().toString(), Toast.LENGTH_SHORT).show();  
             allist.add(beam);  
             CustomAdapter adapter=new CustomAdapter(MainActivity.this,allist);  
             listView.setAdapter(adapter);  
           } catch (JSONException e) {  
             e.printStackTrace();  
           }  
         }  
       }  
       @Override  
       public void onFailure(int statusCode, Header[] headers, Throwable throwable, JSONArray errorResponse) {  
         super.onFailure(statusCode, headers, throwable, errorResponse);  
         Toast.makeText(MainActivity.this, "onFailed", Toast.LENGTH_SHORT).show();  
       }  
     });  
   }  
 }  

StudentBeam : Create Java class.Put below data (The Student beam is  Add multiple data in array list).

StudentBeam

 package com.example.aaru.jsonapp;  
 /**  
  * Created by Aaru on 10/9/2017.  
  */  
 public class StudentBeam {  
   public String getName() {  
     return Name;  
   }  
   public void setName(String name) {  
     Name = name;  
   }  
   public String getAddress() {  
     return Address;  
   }  
   public void setAddress(String address) {  
     Address = address;  
   }  
   public String getPhone() {  
     return Phone;  
   }  
   public void setPhone(String phone) {  
     Phone = phone;  
   }  
   String Name;  
   String Address;  
   String Phone;  
   public StudentBeam(String Name,String Address,String Phone){  
     this.Name=Name;  
     this.Address=Address;  
     this.Phone=Phone;  
   }  
 }  

CustomAdapter : Create Java Class name is CustomAdapter and extend with BaseAdapter.

CustomAdapter

 package com.example.aaru.jsonapp;  
 import android.content.Context;  
 import android.view.LayoutInflater;  
 import android.view.View;  
 import android.view.ViewGroup;  
 import android.widget.BaseAdapter;  
 import android.widget.TextView;  
 import java.util.ArrayList;  
 /**  
  * Created by Aaru on 10/9/2017.  
  */  
 public class CustomAdapter extends BaseAdapter {  
   ArrayList<StudentBeam> list;  
   Context context;  
   LayoutInflater inflater;  
   public CustomAdapter(Context context,ArrayList<StudentBeam> list){  
     this.list=list;  
     this.context=context;  
     inflater=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);  
   }  
   @Override  
   public int getCount() {  
     return list.size();  
   }  
   @Override  
   public Object getItem(int position) {  
     return list.get(position);  
   }  
   @Override  
   public long getItemId(int position) {  
     return position;  
   }  
   @Override  
   public View getView(int position, View convertView, ViewGroup parent) {  
     ViewHolder holder=new ViewHolder();  
     if (convertView==null) {  
       convertView = inflater.inflate(R.layout.raw, null);  
       holder.name= (TextView) convertView.findViewById(R.id.txtName);  
       holder.Address= (TextView) convertView.findViewById(R.id.txtAddress);  
       holder.Phone= (TextView) convertView.findViewById(R.id.txtPhone);  
       convertView.setTag(holder);  
       holder.name.setText(list.get(position).getName());  
       holder.Address.setText(list.get(position).getAddress());  
       holder.Phone.setText(list.get(position).getPhone());  
     }else {  
       holder= (ViewHolder) convertView.getTag();  
     }  
     return convertView;  
   }  
   private class ViewHolder{  
     TextView name;  
     TextView Address;  
     TextView Phone;  
   }  
 }  

>>>>>>>>>>>>>>>>>>>Run App and Enjoy<<<<<<<<<<<<<<<<<<<<<

 >>>>>>>>>>>>>>>>>>>Also Comment below<<<<<<<<<<<<<<<<<<<<<

CustomListView with JSONobject ,Servlet Using Android Asynchronous Http Client | Tutorial 3

Server Side : Open Eclipse indigo and create dynamic app.

⇒Create dynamic app>>StudentApp

⇒Create JAVA class Name is DBConnection and put below data (below code is connection between database and java).

Youtube Channel :

DBConnection

 import java.sql.Connection;  
 import java.sql.DriverManager;  
 /**  
  *  
  * @author Aaru     
  */  
 public class DBConnectiion {  
     String Driver="com.mysql.jdbc.Driver";//this is mysql driver class path  
     String SQL="select Name,Address,Phone from college.Student";//this my sql query for get data from database  
     String URL="jdbc:mysql://localhost:3306";//this my sql url for database connection..  
     String USER="root"; //this is my database connection username and password  
     String PASS="root";  
 }  

⇒Create a JAVA class name is   StudentBeam   the class is use for store multiple data in array.

StudentBeam

 /*  
  * To change this license header, choose License Headers in Project Properties.  
  * To change this template file, choose Tools | Templates  
  * and open the template in the editor.  
  */  
 /**  
  *  
  * @author Aaru  
  */  
 public class Studentbeam {  
   private String Name;  
   private String Address;  
   private String phone;  
   public String getName() {  
     return Name;  
   }  
   public void setName(String Name) {  
     this.Name = Name;  
   }  
   public String getAddress() {  
     return Address;  
   }  
   public void setAddress(String Address) {  
     this.Address = Address;  
   }  
   public String getPhone() {  
     return phone;  
   }  
   public void setPhone(String phone) {  
     this.phone = phone;  
   }  
 }  

⇛Create a JavaServlet name is StudentServlet and create a java Class name is StudentImp
⇢put below code in StudentImp.java



StudentImp

 import java.sql.Connection;  
 import java.sql.DriverManager;  
 import java.sql.ResultSet;  
 import java.sql.SQLException;  
 import java.sql.Statement;  
 import java.util.ArrayList;  
 import java.util.logging.Level;  
 import java.util.logging.Logger;  
 /*  
  * To change this license header, choose License Headers in Project Properties.  
  * To change this template file, choose Tools | Templates  
  * and open the template in the editor.  
  */  
 /**  
  *  
  * @author Aaru  
  */  
 public class StudentImp {  
   DBConnectiion DB=new DBConnectiion();  
   Connection con;  
   Statement stmt;  
   ArrayList<Studentbeam>alStd=new ArrayList<>();  
   public ArrayList<Studentbeam> getData(){  
     try {  
       Class.forName(DB.Driver);  
       con=DriverManager.getConnection(DB.URL, DB.USER, DB.PASS);  
      stmt= con.createStatement();  
       ResultSet rs= stmt.executeQuery(DB.SQL);  
       while (rs.next()) {  
         Studentbeam s=new Studentbeam();  
         s.setName(rs.getString("Name"));  
         s.setAddress(rs.getString("Address"));  
         s.setPhone(rs.getString("Phone"));  
         alStd.add(s);  
         System.out.println("add data success in array");  
       }  
     } catch (ClassNotFoundException ex) {  
       Logger.getLogger(StudentImp.class.getName()).log(Level.SEVERE, null, ex);  
     } catch (SQLException ex) {  
       Logger.getLogger(StudentImp.class.getName()).log(Level.SEVERE, null, ex);  
     }  
     return alStd;  
     //Now App run success  
     //lets Connect with android app using ip address  
   }  
 }  

⇢put below code in StudentServlet

StudentServlet

 /*  
  * To change this license header, choose License Headers in Project Properties.  
  * To change this template file, choose Tools | Templates  
  * and open the template in the editor.  
  */  
 import java.io.IOException;  
 import java.io.PrintWriter;  
 import java.util.ArrayList;  
 import javax.servlet.ServletException;  
 import javax.servlet.http.HttpServlet;  
 import javax.servlet.http.HttpServletRequest;  
 import javax.servlet.http.HttpServletResponse;  
 import org.json.JSONArray;  
 /**  
  *  
  * @author Aaru  
  */  
 public class StudentServlet extends HttpServlet {  
   @Override  
   protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {  
     //b'coz we use get method android side..  
     StudentImp imp=new StudentImp();  
     ArrayList<Studentbeam>alstd= imp.getData();  
     if (alstd!=null) {  
       JSONArray array=new JSONArray(alstd);  
       PrintWriter pw= resp.getWriter();  
       pw.write(array.toString());  
       pw.print(array.toString());  
       //everting is done let' run  
     }  
   }  
 }  

⇓find web.xml in project directory  and put below code)XML

 <?xml version="1.0" encoding="UTF-8"?>  
 <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">  
   <servlet>  
     <servlet-name>StudentServlet</servlet-name>  
     <servlet-class>StudentServlet</servlet-class>  
   </servlet>  
   <servlet-mapping>  
     <servlet-name>StudentServlet</servlet-name>  
     <url-pattern>/StudentServlet</url-pattern>  
   </servlet-mapping>  
 </web-app>  

Run App as Server(Apache Tomcat or Other)

Server Side Is Done click Next For android side Coding