Fixed - Screen should not get turned off while voice chatting actively.

app/src/main/java/com/vsoft/servicenow/speechRecognizer/DroidSpeech.java

@@ -519,6 +519,7 @@ public class DroidSpeech {
                         muteAudio(false);
 
                         dsProperties.onReadyForSpeech = true;
+                        droidSpeechListener.onDroidSpeechStarted();
                     }
 
                     @Override

app/src/main/java/com/vsoft/servicenow/speechRecognizer/OnDSListener.java

@@ -49,4 +49,9 @@ public interface OnDSListener {
      * @param errorMsg The error message
      */
     void onDroidSpeechError(String errorMsg);
+
+    /**
+     * The droid speech recognition is started
+     */
+    void onDroidSpeechStarted();
 }

app/src/main/java/com/vsoft/servicenow/ui/ChatActivity.java

 package com.vsoft.servicenow.ui;
 
+import android.annotation.SuppressLint;
 import android.content.Intent;
 import android.graphics.Color;
 import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
 import android.speech.tts.TextToSpeech;
 import android.speech.tts.UtteranceProgressListener;
 import android.support.v7.app.ActionBar;
@@ -15,6 +18,7 @@ import android.view.KeyEvent;
 import android.view.MenuItem;
 import android.view.MotionEvent;
 import android.view.View;
+import android.view.WindowManager;
 import android.view.inputmethod.EditorInfo;
 import android.widget.EditText;
 import android.widget.ImageButton;
@@ -93,6 +97,9 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
 
     private String mNewMessageUtteranceId;
 
+    private static final int SCREEN_OFF = 0;
+    private static final int SCREEN_ON = 1;
+
     @Override
     public boolean onOptionsItemSelected(MenuItem menuItem) {
         if (menuItem.getItemId() == android.R.id.home) {
@@ -145,8 +152,6 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
 
         checkTTS();
 
-        mVoiceButton = (ImageButton) findViewById(R.id.voice_button);
-
         mMessagesView = (RecyclerView) findViewById(R.id.messages);
         mMessagesView.setLayoutManager(new LinearLayoutManager(this));
 
@@ -186,6 +191,7 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
             }
         });
 
+        mVoiceButton = (ImageButton) findViewById(R.id.voice_button);
         mVoiceButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -463,6 +469,7 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
                 speaker.getTTS().setOnUtteranceProgressListener(new UtteranceProgressListener() {
                     @Override
                     public void onDone(String utteranceId) {
+                        callScreenOnAndOff(SCREEN_OFF);
 
                         /*Start Code
                         Sometime speaker is not getting stop that's why it is breaking.
@@ -492,6 +499,8 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
 
                     @Override
                     public void onStart(String utteranceId) {
+                        callScreenOnAndOff(SCREEN_ON);
+
                         if (droidSpeech != null) {
                             droidSpeech.closeDroidSpeechOperations();
                         }
@@ -546,7 +555,6 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
 
     @Override
     public void onDroidSpeechSupportedLanguages(String currentSpeechLanguage, List<String> supportedSpeechLanguages) {
-
     }
 
     @Override
@@ -568,6 +576,7 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
 
     @Override
     public void onDroidSpeechClosedByUser() {
+        callScreenOnAndOff(SCREEN_OFF);
     }
 
     @Override
@@ -593,9 +602,16 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
     }
 
     @Override
+    public void onDroidSpeechStarted() {
+        callScreenOnAndOff(SCREEN_ON);
+    }
+
+    @Override
     public void onDestroy() {
         super.onDestroy();
 
+        callScreenOnAndOff(SCREEN_OFF);
+
         if(mSocket != null) {
             mSocket.disconnect();
 
@@ -613,10 +629,39 @@ public class ChatActivity extends AppCompatActivity implements OnDSListener, OnD
         }
     }
 
-    private String firstLetterCaps ( String data ) {
+    private String firstLetterCaps (String data) {
         String firstLetter = data.substring(0,1).toUpperCase();
         String restLetters = data.substring(1).toLowerCase();
         return firstLetter + restLetters;
     }
+
+    /**
+     * This handler will set and clear the SCREEN_ON and SCREEN_OFF flag.
+     * How will it work - It will work in two scenario
+     * First - Listening - Whenever listening dialog will open, screen will keep ON and wait to Close the dialog that mean when listening dialog will dismiss then SCREEN_ON flag will clear.
+     * Second - Speaking - Whenever speaking will start, screen will keep ON and wait to Stop the speaking that mean when Speaking will stop then SCREEN_ON flag will clear.
+     * */
+    @SuppressLint("HandlerLeak")
+    private Handler handler = new Handler() {
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case SCREEN_ON:
+                    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+                    break;
+                case SCREEN_OFF:
+                    getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+                    break;
+                default:
+                    getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+            }
+        }
+    };
+
+    private void callScreenOnAndOff(final int screenState) {
+        Message message = handler.obtainMessage();
+        message.what = screenState;
+        handler.sendMessage(message);
+    }
 }