List view data from php

two xmls
activity_main.xml




<LinearLayout 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"
    android:orientation= "vertical"
    tools:context=".MainActivity" >

 

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="Button" />

</LinearLayout>

for list view
data.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/tvlist"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
 
    android:padding="10dp"
 
    android:textSize="20sp"
    android:textStyle="bold"

    android:gravity="center" >

</TextView>


java
main_activity.java

package com.example.atest;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;



import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {



@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);




Button btn=(Button) findViewById(R.id.button1);
btn.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub

Intent edu = new Intent(getApplicationContext(),newww.class);

startActivity(edu);
}});
}


}

newww.java


package com.example.atest;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;



import android.app.Activity;
import android.app.ListActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class newww extends ListActivity {
InputStream is=null;
String result=null;
String line=null;

String[] roll_no,name;

TextView tv;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
 
   final List<String> list1 = new ArrayList<String>();
 
   try
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://10.0.2.2/spinner.php");
HttpResponse response = httpclient.execute(httppost);
Log.e("Fail 1", "3");

HttpEntity entity = response.getEntity();
Log.e("Fail 1", "4");

is = entity.getContent();
Log.e("Pass 1", "connection success ");
}
catch(Exception e)
{
Log.e("Fail 1", e.toString());
Toast.makeText(getApplicationContext(), "Invalid IP Address",Toast.LENGTH_LONG).show();
finish();
}  

try
{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
is.close();
result = sb.toString();
}
catch(Exception e)
{
Log.e("Fail 2", e.toString());
}  


try
{
JSONArray JA=new JSONArray(result);
JSONObject json= null;
roll_no = new String[JA.length()];    
name = new String[JA.length()];

for(int i=0;i<JA.length();i++)
{
json=JA.getJSONObject(i);
roll_no[i] = json.getString("roll_no");
name[i]=json.getString("name");
}
Toast.makeText(getApplicationContext(), "doneee",Toast.LENGTH_LONG).show();

// for(int i=0;i<roll_no.length;i++)
// {
// list1.add(roll_no[i]);
//// list2.add(name[i]);
// }


spinner_fn();
     
}
catch(Exception e)
{

Log.e("Fail 3", e.toString());
//login.this.finish();

}

};




private void spinner_fn() {
// TODO Auto-generated method stub

setListAdapter(new ArrayAdapter<String>(getApplicationContext(),R.layout.data,roll_no));



//ArrayAdapter<String> dataAdapter1 = new ArrayAdapter<String>(getApplicationContext(),
//                                android.R.layout.simple_spinner_item, roll_no);
//
//dataAdapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
//spinner1.setAdapter(dataAdapter1);
//            
//
//ArrayAdapter<String> dataAdapter2 = new ArrayAdapter<String>(getApplicationContext(),
//                                android.R.layout.simple_spinner_item, name);
//dataAdapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
//spinner2.setAdapter(dataAdapter2);


}
}