Android Programming Tutorial 40 : JSON Parsing In Android

JSON Parsing:

JSON Parsing Stands for JavaStript Object Notation, JSON is used for transmitting the data over remote Network.JSON are also used to parsed the data from the Same Network.

In android, application uses JSON to transmit data over networks and JSON data is parsed, while it is received from cloud servers and from some where else.

JSON Parsing with Android Application in Detail:

JSON provides data in form of object that is to be parsed while reading form source and a JSON object is created, whenever data is to be transmitted over network or any source to destination.

JSON Format:

JSON Object Format:

{

    Name : "Sunil",

    Address: "Hyd",

    Phone : 000000000

} 

Here  the data between Curly braces represents JSONObject.

JSONArray Format:

[

    Name: "sunil",,

    Address : "hyd",

    Phone : 00000000

]

Here Data between square braces represents JSONArray.

Combination of JSONObject and JSONArray:

{ (JSONObject)

   "Employee" :

            [(JSONArray)

               {(JSONObject1)

                  "Name":"sunil",

                  "Address":"hyd",

                  "phone": 9000000000

               },

               {(JSONObject2)

                  "Name":"Tanil",

                  "Address":"hyd",

                  "phone": 9000000001

               }

             ]

}(End Of JSONObject)




JSONParsing Example Statically:

{

    "employee":

          [

             { 

                "id":"100",

                "name":"Sunil Ambilpur",

                "email":"sunil@gmail.com",

                "address":"hyd",

                "gender" :"male",

                "phone":{"mobile":"+91 0000000000",

                "home":"00 000000",

                "office":"00 000000"

           }

       ] 

}

 Here Statically means we are storing the JSON data in the String.

Create Android Application:

• File >> New >> Android Application
• Enter Project name: JSONParsingApp
• Package: com.ambilpursunil.newapp
• Keep other default selections, click Next until you reach Finish

                               

 1.Simply Copy and Past the Code which is display below in the  MainActivity.java 

package com.ambilpursunil.newapp;

import org.json.JSONArray;

import org.json.JSONException;

import org.json.JSONObject;

import android.app.Activity;

import android.os.Bundle;

import android.widget.TextView;

public class MainActivity4 extends Activity{

           

            String str = "{\"employee\":[{\"id\":\"100\",\"name\":\"Sunil Ambilpur\",\"email\":\"sunil@gmail.com\",\"address\":\"hyd\",\"gender\" :\"male\",\"phone\":{\"mobile\":\"+91 0000000000\",\"home\":\"00 000000\",\"office\":\"00 000000\"}}]}";

           

            @Override

            protected void onCreate(Bundle savedInstanceState) {

                        super.onCreate(savedInstanceState);

                        setContentView(R.layout.activity_main);

                        TextView tv = (TextView) findViewById(R.id.tvJSON);

                       

                        try {

                                    JSONObject jo = new JSONObject(str);

                                    JSONArray ja = jo.getJSONArray("employee");

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

                                                JSONObject job = ja.getJSONObject(i);

                                                String id = job.getString("id");

                                                String name = job.getString("name");

                                                String email = job.getString("email");

                                                String address = job.getString("address");

                                                String gender = job.getString("gender");

                                                // Phone node is JSON Object

               JSONObject phone = job.getJSONObject("phone");

                                                String mobile = phone.getString("mobile");

                                                String home = phone.getString("home");

                                                String office = phone.getString("office");

                                               

                                                String strr = "id"+id+"\n"+"name"+name+"\n"+"email"+email+"\n"+"address"+address+"\n"+"gender"+gender+"\n"+"mobile"+mobile+"\n"+"home"+home+"\n"+"office"+office;

                            tv.setText(strr);

                                    }

                        } catch (JSONException e) {

                                    // TODO Auto-generated catch block

                                    e.printStackTrace();

                        }

               }

     }

 2.Simple Copy and Past the below code:  actvitiy_main.xml

<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">

    <TextView

        android:id="@+id/tvJSON"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginLeft="76dp"

        android:layout_marginTop="65dp"

        android:text="TextView" />

</RelativeLayout>

3.Copy and past the code for manifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.ambilpursunil.newapp"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="21" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name=".ManiActivity"

            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>

4.Right click on the project and Run As-->Android Application

OutPut:

When our application launch data will be visible on the screen.

Please Send Your Comments To ambilpura.sunil@gmail.com

Stay Tune For Next Tutorial...  RestFull Web Services Using JSON In Android: