Using HttpURLConnection class in Android

Download this project---->HttpUrlConnection.zip
ScreenShot:

activity_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"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity" >

    <TextView

        android:id="@+id/textView"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginLeft="17dp"

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

</RelativeLayout>

MainActivity.java:

package com.ram.httpurlconnection;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URL;

import android.annotation.SuppressLint;

import android.app.Activity;

import android.os.Bundle;

import android.os.StrictMode;

import android.widget.TextView;

@SuppressLint("NewApi")

public class MainActivity extends Activity {

TextView text;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

text = (TextView) findViewById(R.id.textView);

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()

.permitAll().build();

StrictMode.setThreadPolicy(policy);

try {

// The URI class can be used to manipulate URLs of any protocol.

URL url = new URL("http://www.google.com");

// Obtain a new HttpURLConnection by calling URL.openConnection()

// and casting the result to HttpURLConnection.

HttpURLConnection con = (HttpURLConnection) url.openConnection();

// Returns an InputStream for reading data from the resource pointed

// by this URLConnection

readStream(con.getInputStream());

} catch (Exception e) {

e.printStackTrace();

/*

* Toast.makeText(getApplicationContext(), e.getMessage(),

* Toast.LENGTH_LONG).show();

*/

text.setText(e.getMessage());

}

}

private void readStream(InputStream in) {

StringBuffer sb = new StringBuffer();

BufferedReader reader = null;

try {

reader = new BufferedReader(new InputStreamReader(in));

String line = "";

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

sb.append(line);

}

text.setText(sb.toString());

} catch (IOException e) {

e.printStackTrace();

} finally {

if (reader != null) {

try {

reader.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

}

AndroidManifest.xml:

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

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

    package="com.ram.httpurlconnection"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="18" />

    <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.ram.httpurlconnection.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>