Communicate with server

app/src/main/AndroidManifest.xml

@@ -1,13 +1,16 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="info.androidhive.speechtotext"
     android:versionCode="1"
     android:versionName="1.0" >
 
     <uses-sdk
-        android:minSdkVersion="11"
+        android:minSdkVersion="19"
         android:targetSdkVersion="19" />
 
+    <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"

app/src/main/java/info/androidhive/speechtotext/MainActivity.java

@@ -1,13 +1,27 @@
 package info.androidhive.speechtotext;
 
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.io.UnsupportedEncodingException;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Locale;
 
 import android.app.Activity;
 import android.content.ActivityNotFoundException;
+import android.content.Context;
 import android.content.Intent;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import android.os.AsyncTask;
 import android.os.Bundle;
 import android.speech.RecognizerIntent;
+import android.util.Log;
 import android.view.Menu;
 import android.view.View;
 import android.widget.ImageButton;
@@ -19,6 +33,9 @@ public class MainActivity extends Activity {
 	private TextView txtSpeechInput;
 	private ImageButton btnSpeak;
 	private final int REQ_CODE_SPEECH_INPUT = 100;
+	public static final String TAG = MainActivity.class.getSimpleName();
+	public static final String Url = "http://192.168.10.109:1234";
+	public static final int MAX_ANSWER_LEN = 500;
 
 	@Override
 	protected void onCreate(Bundle savedInstanceState) {
@@ -63,7 +80,7 @@ public class MainActivity extends Activity {
 	/**
 	 * Receiving speech input
 	 * */
-	@Override<>
+	@Override
 	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 		super.onActivityResult(requestCode, resultCode, data);
 
@@ -74,6 +91,15 @@ public class MainActivity extends Activity {
 				ArrayList<String> result = data
 						.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
 				txtSpeechInput.setText(result.get(0));
+
+				ConnectivityManager connMgr = (ConnectivityManager)
+						getSystemService(Context.CONNECTIVITY_SERVICE);
+				NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
+				if (networkInfo != null && networkInfo.isConnected()) {
+					new TalkToMeTask().execute(result.get(0));
+				} else {
+					txtSpeechInput.setText("No network connection available.");
+				}
 			}
 			break;
 		}
@@ -88,4 +114,65 @@ public class MainActivity extends Activity {
 		return true;
 	}
 
+	private class TalkToMeTask extends AsyncTask<String,Void, String>{
+
+		@Override
+		protected String doInBackground(String... question) {
+			try {
+				return talkToServer(question[0]);
+			} catch (IOException e){
+				Log.d(TAG, "Coincoin "+e);
+				return "Cannot connect to server";
+			}
+		}
+
+		@Override
+		protected void onPostExecute(String s) {
+			txtSpeechInput.setText(s);
+		}
+
+		private String talkToServer(String question) throws IOException {
+			InputStream is = null;
+			try {
+				URL url = new URL(Url);
+				String urlParameters  = "msg="+question;
+				byte[] postData       = urlParameters.getBytes( StandardCharsets.UTF_8 );
+				int    postDataLength = postData.length;
+				HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+				conn.setDoOutput( true );
+				conn.setInstanceFollowRedirects( false );
+				conn.setRequestMethod("POST");
+				conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
+				conn.setRequestProperty("charset", "utf-8");
+				conn.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
+				conn.setUseCaches(false);
+				DataOutputStream wr = new DataOutputStream( conn.getOutputStream());
+				wr.write(postData);
+
+				conn.connect();
+				int response = conn.getResponseCode();
+				Log.d(TAG, "The response is: " + response);
+				is = conn.getInputStream();
+
+
+				String contentAsString = readIt(is, MAX_ANSWER_LEN);
+				return contentAsString;
+
+			} finally {
+				if (is != null){
+					is.close();
+				}
+			}
+		}
+		// Reads an InputStream and converts it to a String.
+		public String readIt(InputStream stream, int len) throws IOException, UnsupportedEncodingException {
+			Reader reader = null;
+			reader = new InputStreamReader(stream, "UTF-8");
+			char[] buffer = new char[len];
+			reader.read(buffer);
+			return new String(buffer);
+		}
+	}
+
+
 }