Android - Read an XML file with HTTP GET

MainActivity.java

 

package com.hmkcode.android;

 

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

 

import org.apache.http.HttpResponse;

import org.apache.http.client.HttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.DefaultHttpClient;

 

import android.net.ConnectivityManager;

import android.net.NetworkInfo;

import android.os.AsyncTask;

import android.os.Bundle;

import android.util.Log;

import android.widget.EditText;

import android.widget.TextView;

import android.widget.Toast;

import android.app.Activity;

 

public class MainActivity extends Activity {

 

    EditText etResponse;

    TextView tvIsConnected;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

 

        // get reference to the views

        etResponse = (EditText) findViewById(R.id.etResponse);

        tvIsConnected = (TextView) findViewById(R.id.tvIsConnected);

 

        // check if you are connected or not

        if(isConnected()){

            tvIsConnected.setBackgroundColor(0xFF00CC00);

            tvIsConnected.setText("You are conncted");

        }

        else{

            tvIsConnected.setText("You are NOT conncted");

        }

 

        // show response on the EditText etResponse

        //etResponse.setText(GET("http://hmkcode.com/examples/index.php"));

 

        // call AsynTask to perform network operation on separate thread

        new HttpAsyncTask().execute("http://hmkcode.com/examples/index.php");

    }

 

    public static String GET(String url){

        InputStream inputStream = null;

        String result = "";

        try {

 

            // create HttpClient

            HttpClient httpclient = new DefaultHttpClient();

 

            // make GET request to the given URL

            HttpResponse httpResponse = httpclient.execute(new HttpGet(url));

 

            // receive response as inputStream

            inputStream = httpResponse.getEntity().getContent();

 

            // convert inputstream to string

            if(inputStream != null)

                result = convertInputStreamToString(inputStream);

            else

                result = "Did not work!";

 

        } catch (Exception e) {

            Log.d("InputStream", e.getLocalizedMessage());

        }

 

        return result;

    }

 

    private static String convertInputStreamToString(InputStream inputStream) throws IOException{

        BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(inputStream));

        String line = "";

        String result = "";

        while((line = bufferedReader.readLine()) != null)

            result += line;

 

        inputStream.close();

        return result;

 

    }

 

    public boolean isConnected(){

        ConnectivityManager connMgr = (ConnectivityManager) getSystemService(this.CONNECTIVITY_SERVICE);

            NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();

            if (networkInfo != null && networkInfo.isConnected())

                return true;

            else

                return false;  

    }

    private class HttpAsyncTask extends AsyncTask<String, Void, String> {

        @Override

        protected String doInBackground(String... urls) {

 

            return GET(urls[0]);

        }

        // onPostExecute displays the results of the AsyncTask.

        @Override

        protected void onPostExecute(String result) {

            Toast.makeText(getBaseContext(), "Received!", Toast.LENGTH_LONG).show();

            etResponse.setText(result);

       }

    }

 

}

 

 

AndroidManifest.xml

 

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

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

    package="com.hmkcode.android"

    android:versionCode="1"

    android:versionName="1.0" >

 

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="17" />

 

    <uses-permission android:name="android.permission.INTERNET" />

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

 

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.hmkcode.android.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>

 

 

 

XML parsing

 

 

HttpGet uri = new HttpGet("http://example.com");    

DefaultHttpClient client = new DefaultHttpClient();
HttpResponse resp = client.execute(uri);

StatusLine status = resp.getStatusLine();
if (status.getStatusCode() != 200) {
    Log.d(tag, "HTTP error, invalid server status code: " + resp.getStatusLine());  
}

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse(resp.getEntity().getContent());

 

 

Basic AUTH

 

String auth = Base64Converter.encode(String.format("%s:%s", user, pass));
URL u = new URL(url);
conn = (HttpsURLConnection) u.openConnection();
conn.addRequestProperty("Authorization", "Basic " + auth);