Showing posts with label java. Show all posts
Showing posts with label java. Show all posts

Tuesday, 17 January 2023

How to Integrate ChatGPT In Android With TTS (Text-To-Speech).

AI (Artificial Intelligence) Technology has been progressing towards futuristic ideas on daily basis. OpenAI coming up with their R&D as ChatGPT is prominent development in this field. ChatGPT (Generative Pre-trained Transformer) is a chatbot launched by OpenAI in November 2022. It is built on top of OpenAI's GPT-3 family of large language models, and is fine-tuned with both supervised and reinforcement learning techniques.

Methods-
ChatGPT trained this model using Reinforcement Learning from Human Feedback (RLHF), using the same methods as InstructGPT, but with slight differences in the data collection setup. They trained an initial model using supervised fine-tuning: human AI trainers provided conversations in which they played both sides—the user and an AI assistant. Then provide the trainers access to model-written suggestions to help them compose their responses. They mixed this new dialogue dataset with the InstructGPT dataset, which are transformed into a dialogue format.


ChatGPT is fine-tuned from a model in the GPT-3.5 series, which finished training in early 2022. You can learn more about the 3.5 series here. ChatGPT and GPT 3.5 were trained on an Azure AI supercomputing infrastructure.

We as technophiles strongly believe in ‘Sharing Is Caring’. We have create a sample demo where we will integrate ChatGPT in Android to demonstrate how it works with TTS (Text-To-Speech).


Here, we have asked for food recipe via ChatGPT bot which is read by TTS bot. We can also create a recipe from a list of ingredients. There are unlimited use-cases and ideas that are possible to explore and make life easy and technological advance.

Refer the below link for complete sample code:-

Download Sample Code

Have a look on few code snippets,

//MainActivity.java
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package com.elitetechnority.chatgptdemo;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.os.StrictMode;
import android.speech.tts.TextToSpeech;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import com.theokanning.openai.OpenAiService;
import com.theokanning.openai.completion.CompletionRequest;
import com.theokanning.openai.completion.CompletionResult;

import java.util.Locale;

public class MainActivity extends AppCompatActivity {

    private TextToSpeech textToSpeech;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        OpenAiService service = new OpenAiService("Your Token");
        TextView tv_bot=(TextView)findViewById(R.id.tv_bot);
        EditText et_bot=(EditText)findViewById(R.id.et_bot);
        et_bot.setText("Tell about ChatGPT");
        Button btn_bot=(Button)findViewById(R.id.btn_bot);
        btn_bot.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                CompletionRequest completionRequest = CompletionRequest.builder()
                        .prompt(et_bot.getText().toString())
                        .model("text-davinci-003")
                        .topP(1.0)
                        .temperature(0.3)
                        .maxTokens(150)
                        .frequencyPenalty(0.0)
                        .presencePenalty(0.0)
                        .build();
                CompletionResult completionResult=service.createCompletion(completionRequest);
                System.out.println(completionResult);
                tv_bot.setText(completionResult.getChoices().get(0).getText());
                String toSpeak = tv_bot.getText().toString();
                textToSpeech.speak(toSpeak, TextToSpeech.QUEUE_FLUSH, null);
            }
        });

         textToSpeech=new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int status) {
                if(status != TextToSpeech.ERROR) {
                    textToSpeech.setLanguage(Locale.UK);
                }
            }
        });
    }

    @Override
    protected void onPause() {
        if(textToSpeech !=null){
            textToSpeech.stop();
            textToSpeech.shutdown();
        }
        super.onPause();
    }

    @Override
    protected void onDestroy() {
        if(textToSpeech !=null){
            textToSpeech.stop();
            textToSpeech.shutdown();
        }
        super.onDestroy();
    }
}
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Saturday, 14 December 2019

How To Build Real Time Chat Interface Using Firebase In Android.

The Firebase Realtime Database is a cloud-hosted database. Data is stored as JSON and synchronized in realtime to every connected client. When you build cross-platform apps with our iOS, Android, and JavaScript SDKs, all of your clients share one Realtime Database instance and automatically receive updates with the newest data.

We will apply the same concept for real time chat. Firstly, we will build chat interface with login and registration and than setup Firebase Realtime Database for messaging.

Refer the below link for complete sample code:-

Download Sample Code

Have a look on few code snippets,

 //activity_users.xml
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<?xml version="1.0" encoding="utf-8"?>
<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: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="com.androidchatapp.Users"
    android:orientation="vertical">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="No users found!"
        android:id="@+id/noUsersText"
        android:visibility="gone"/>

    <ListView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/usersList"/>
</LinearLayout>

//activity_chat.xml
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<?xml version="1.0" encoding="utf-8"?>
<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:background="#ffffff"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.androidchatapp.Chat">

    <ScrollView
        android:layout_width="match_parent"
        android:layout_weight="20"
        android:layout_height="wrap_content"
        android:id="@+id/scrollView">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:id="@+id/layout1">

      </LinearLayout>
    </ScrollView>

    <include
        layout="@layout/message_area"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="bottom"
        android:layout_marginTop="5dp"/>
</LinearLayout>

//message_area.xml 
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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorPrimaryDark"
    android:gravity="bottom"
    android:orientation="horizontal">

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:textColorHint="#CFD8DC"
        android:textColor="#CFD8DC"
        android:hint="Write a message..."
        android:id="@+id/messageArea"
        android:maxHeight="80dp"
        />

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="4"
        android:padding="4dp"
        android:src="@android:drawable/ic_menu_send"
        android:id="@+id/sendButton"/>
</LinearLayout>

//Users.java
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package com.elitetechnologies.realtimechat;

import android.app.ProgressDialog;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.Iterator;

public class Users extends AppCompatActivity {
    ListView usersList;
    TextView noUsersText;
    ArrayList<String> al = new ArrayList<>();
    int totalUsers = 0;
    ProgressDialog pd;

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

        usersList = (ListView)findViewById(R.id.usersList);
        noUsersText = (TextView)findViewById(R.id.noUsersText);

        pd = new ProgressDialog(Users.this);
        pd.setMessage("Loading...");
        pd.show();

        String url = "https://real-time-chat-eb94c.firebaseio.com/users.json";

        StringRequest request = new StringRequest(Request.Method.GET, url, new Response.Listener<String>(){
            @Override
            public void onResponse(String s) {
                doOnSuccess(s);
            }
        },new Response.ErrorListener(){
            @Override
            public void onErrorResponse(VolleyError volleyError) {
                System.out.println("" + volleyError);
            }
        });

        RequestQueue rQueue = Volley.newRequestQueue(Users.this);
        rQueue.add(request);

        usersList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                UserDetails.chatWith = al.get(position);
                startActivity(new Intent(Users.this, Chat.class));
            }
        });
    }

    public void doOnSuccess(String s){
        try {
            JSONObject obj = new JSONObject(s);

            Iterator i = obj.keys();
            String key = "";

            while(i.hasNext()){
                key = i.next().toString();

                if(!key.equals(UserDetails.username)) {
                    al.add(key);
                }

                totalUsers++;
            }

        } catch (JSONException e) {
            e.printStackTrace();
        }

        if(totalUsers <=1){
            noUsersText.setVisibility(View.VISIBLE);
            usersList.setVisibility(View.GONE);
        }
        else{
            noUsersText.setVisibility(View.GONE);
            usersList.setVisibility(View.VISIBLE);
            usersList.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, al));
        }

        pd.dismiss();
    }
}

//Chat.java
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package com.elitetechnologies.realtimechat;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.TextView;

import com.firebase.client.ChildEventListener;
import com.firebase.client.DataSnapshot;
import com.firebase.client.Firebase;
import com.firebase.client.FirebaseError;

import java.util.HashMap;
import java.util.Map;

public class Chat extends AppCompatActivity {
    LinearLayout layout;
    ImageView sendButton;
    EditText messageArea;
    ScrollView scrollView;
    Firebase reference1, reference2;

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

        layout = (LinearLayout)findViewById(R.id.layout1);
        sendButton = (ImageView)findViewById(R.id.sendButton);
        messageArea = (EditText)findViewById(R.id.messageArea);
        scrollView = (ScrollView)findViewById(R.id.scrollView);

        Firebase.setAndroidContext(this);
        reference1 = new Firebase("https://real-time-chat-eb94c.firebaseio.com/message/" + UserDetails.username + "_" + UserDetails.chatWith);
        reference2 = new Firebase("https://real-time-chat-eb94c.firebaseio.com/message/" + UserDetails.chatWith + "_" + UserDetails.username);

        sendButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String messageText = messageArea.getText().toString();

                if(!messageText.equals("")){
                    Map<String, String> map = new HashMap<String, String>();
                    map.put("message", messageText);
                    map.put("user", UserDetails.username);
                    reference1.push().setValue(map);
                    reference2.push().setValue(map);
                }
            }
        });

        reference1.addChildEventListener(new ChildEventListener() {
            @Override
            public void onChildAdded(DataSnapshot dataSnapshot, String s) {
                Map map = dataSnapshot.getValue(Map.class);
                String message = map.get("message").toString();
                String userName = map.get("user").toString();

                if(userName.equals(UserDetails.username)){
                    addMessageBox("You:-\n" + message, 1);
                }
                else{
                    addMessageBox(UserDetails.chatWith + ":-\n" + message, 2);
                }
            }

            @Override
            public void onChildChanged(DataSnapshot dataSnapshot, String s) {

            }

            @Override
            public void onChildRemoved(DataSnapshot dataSnapshot) {

            }

            @Override
            public void onChildMoved(DataSnapshot dataSnapshot, String s) {

            }

            @Override
            public void onCancelled(FirebaseError firebaseError) {

            }
        });
    }

    public void addMessageBox(String message, int type){
        TextView textView = new TextView(Chat.this);
        textView.setText(message);
        LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
        lp.setMargins(0, 0, 0, 10);
        textView.setLayoutParams(lp);

        if(type == 1) {
            textView.setBackgroundResource(R.drawable.rounded_corner1);
        }
        else{
            textView.setBackgroundResource(R.drawable.rounded_corner2);
        }

        layout.addView(textView);
        scrollView.fullScroll(View.FOCUS_DOWN);
    }
}
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Tuesday, 14 May 2019

HB Blog 167: How To Integrate Google Pay Payment Gateway In Android.

Google Pay  is a digital wallet platform and online payment system developed by Google to power in-app and tap-to-pay purchases on mobile devices, enabling users to make payments with Android phones, tablets or watches.

Google Pay uses Near Field Communication (NFC) to transmit card information facilitating funds transfer to the retailer. It replaces the credit or debit card chip and PIN or magnetic stripe transaction at point-of-sale terminals by allowing the user to upload these in the Google Pay wallet. It is similar to contactless payments already used in many countries, with the addition of two-factor authentication. The service lets Android devices wirelessly communicate with point of sale systems using a near field communication (NFC) antenna, host-based card emulation (HCE), and Android's security.

Google Pay takes advantage of physical authentications such as fingerprint ID where available. On devices without fingerprint ID, Google Pay is activated with a passcode. When the user makes a payment to a merchant, Google Pay does not send the credit or debit card number with the payment. Instead it generates a virtual account number representing the user's account information. This service keeps customer payment information private, sending a one-time security code instead of the card or user details.


Refer the below link for complete sample code:-

Download Sample Code

Have a look on few code snippets,

 //build.gradle
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apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.elitetechnologies.googlepay"
        minSdkVersion 20
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.razorpay:checkout:1.5.1'
}

//activity_main.xml
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<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#00b1e1"
    >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="100dp"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:orientation="vertical"
        android:gravity="center"
        >

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="110dp"
            >

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="80dp"
                android:layout_alignParentBottom="true"
                android:background="#E2E2E2"
                android:gravity="center"
                >

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:paddingTop="35dp"
                    android:paddingBottom="0dp"
                    android:textSize="12sp"
                    android:text="Order #RZP42"
                    />

            </LinearLayout>

            <ImageView
                android:layout_width="60dp"
                android:layout_height="60dp"
                android:layout_centerHorizontal="true"
                android:background="#FFFFFF"
                android:src="@mipmap/ic_launcher"
                />

        </RelativeLayout>

        <LinearLayout
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            android:orientation="vertical"
            android:paddingTop="15dp"
            android:background="#f2f2f2"
            android:gravity="center"
            >

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:paddingTop="0dp"
                android:paddingBottom="5dp"
                android:textSize="20sp"
                android:text="Razorpay T-Shirt"
                />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:paddingTop="0dp"
                android:paddingBottom="0dp"
                android:textSize="12sp"
                android:text="INR 1.00"
                />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:paddingTop="5dp"
                android:paddingBottom="0dp"
                android:textSize="12sp"
                android:textStyle="italic"
                android:text="This is a real transaction"
                />

            <Button
                android:id="@+id/btn_pay"
                android:layout_width="wrap_content"
                android:layout_height="36dp"
                android:layout_marginTop="20dp"
                android:layout_marginBottom="20dp"
                android:layout_gravity="center_horizontal"
                android:paddingRight="20dp"
                android:paddingLeft="20dp"
                android:background="@drawable/green_button"
                android:textSize="14sp"
                android:textColor="#fcfcfc"
                android:text="Purchase"
                />

        </LinearLayout>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:paddingTop="10dp"
            android:paddingBottom="10dp"
            android:paddingLeft="20dp"
            android:paddingRight="20dp"
            android:background="@drawable/secured_by_bg"
            android:textSize="12sp"
            android:textColor="#a1ddee"
            android:textStyle="italic"
            android:text="Secure Payments by Razorpay"
            />

    </LinearLayout>

</RelativeLayout>

//MainActivity.java
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package com.elitetechnologies.googlepay;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.razorpay.Checkout;
import com.razorpay.PaymentResultListener;

import org.json.JSONObject;

public class MainActivity extends Activity implements PaymentResultListener {
    private static final String TAG = MainActivity.class.getSimpleName();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        /*
         To ensure faster loading of the Checkout form,
          call this method as early as possible in your checkout flow.
         */
        Checkout.preload(getApplicationContext());

        // Payment button created by you in XML layout
        Button button = (Button) findViewById(R.id.btn_pay);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startPayment();
            }
        });
    }

    public void startPayment() {
        /*
          You need to pass current activity in order to let Razorpay create CheckoutActivity
         */
        final Activity activity = this;

        final Checkout co = new Checkout();

        try {
            JSONObject options = new JSONObject();
            options.put("name", "Razorpay Corp");
            options.put("description", "Demoing Charges");
            //You can omit the image option to fetch the image from dashboard
            options.put("image", "https://s3.amazonaws.com/rzp-mobile/images/rzp.png");
            options.put("currency", "INR");
            options.put("amount", "100");

            JSONObject preFill = new JSONObject();
            preFill.put("email", "test@razorpay.com");
            preFill.put("contact", "9876543210");

            options.put("prefill", preFill);

            co.open(activity, options);
        } catch (Exception e) {
            Toast.makeText(activity, "Error in payment: " + e.getMessage(), Toast.LENGTH_SHORT)
                    .show();
            e.printStackTrace();
        }
    }

    /**
     * The name of the function has to be
     * onPaymentSuccess
     * Wrap your code in try catch, as shown, to ensure that this method runs correctly
     */
    @SuppressWarnings("unused")
    @Override
    public void onPaymentSuccess(String razorpayPaymentID) {
        try {
            Toast.makeText(this, "Payment Successful: " + razorpayPaymentID, Toast.LENGTH_SHORT).show();
        } catch (Exception e) {
            Log.e(TAG, "Exception in onPaymentSuccess", e);
        }
    }

    /**
     * The name of the function has to be
     * onPaymentError
     * Wrap your code in try catch, as shown, to ensure that this method runs correctly
     */
    @SuppressWarnings("unused")
    @Override
    public void onPaymentError(int code, String response) {
        try {
            Toast.makeText(this, "Payment failed: " + code + " " + response, Toast.LENGTH_SHORT).show();
        } catch (Exception e) {
            Log.e(TAG, "Exception in onPaymentError", e);
        }
    }
}
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