Sending Message to WhatsApp Number in Android

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Hello Friends, Today we are going see an example of sending message to whatsapp number in android. WhatsApp Messenger, or simply WhatsApp, is an American freeware, cross-platform messaging and Voice over IP service owned by Facebook, Inc. Actually I have added this feature in one of my office’s android project few days ago. Using this example we can send message to specific whatsapp number or we can open whatsapp with specific message and later we can select contact in whatsapp or we can send specific message to specific whatsapp number as well. There are two buttons to trigger Whatsapp message, you can use any one you want but WHATSAPP 2 button is better because WHATSAPP 1 button doesn’t allow set specific message but can set specific number. So, lets see the code without wasting any more time…

MainActivity.java

package com.zatackcoder.sendingmessagetowhatsapp;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

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

        final EditText countryCodeET = findViewById(R.id.country_code);
        final EditText mobileET = findViewById(R.id.mobile);
        final EditText messageET = findViewById(R.id.message);

        Button button1 = findViewById(R.id.button1);
        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String countryCode = countryCodeET.getText().toString().trim();
                String mobile = mobileET.getText().toString().trim();
                String message = messageET.getText().toString();
                try {
                    Intent sendIntent = new Intent(Intent.ACTION_SENDTO, Uri.parse("smsto:" + countryCode + mobile + "?body=" + message)); // I have appended  message here but it doesn't work use second method to send message as well
                    //sendIntent.putExtra(Intent.EXTRA_TEXT, message);
                    sendIntent.setPackage("com.whatsapp");
                    startActivity(sendIntent);
                } catch (Exception e) {
                    Toast.makeText(getApplicationContext(), "It seems whatsapp not installed on your phone!", Toast.LENGTH_LONG).show();
                }
            }
        });

        Button button2 = findViewById(R.id.button2);
        button2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String countryCode = countryCodeET.getText().toString().trim();
                String mobile = mobileET.getText().toString().trim();
                String message = messageET.getText().toString();
                try {
                    Intent intent = new Intent(Intent.ACTION_VIEW);
                    intent.setData(Uri.parse("http://api.whatsapp.com/send?phone=" + countryCode + mobile + "&text=" + message));
                    startActivity(intent);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

}

package com.zatackcoder.sendingmessagetowhatsapp;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.net.Uri;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

final EditText countryCodeET = findViewById(R.id.country_code);

final EditText mobileET = findViewById(R.id.mobile);

final EditText messageET = findViewById(R.id.message);

Button button1 = findViewById(R.id.button1);

button1.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

String countryCode = countryCodeET.getText().toString().trim();

String mobile = mobileET.getText().toString().trim();

String message = messageET.getText().toString();

try {

Intent sendIntent = new Intent(Intent.ACTION_SENDTO, Uri.parse("smsto:" + countryCode + mobile + "?body=" + message)); // I have appended message here but it doesn't work use second method to send message as well

//sendIntent.putExtra(Intent.EXTRA_TEXT, message);

sendIntent.setPackage("com.whatsapp");

startActivity(sendIntent);

} catch (Exception e) {

Toast.makeText(getApplicationContext(), "It seems whatsapp not installed on your phone!", Toast.LENGTH_LONG).show();

}

});

Button button2 = findViewById(R.id.button2);

button2.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

String countryCode = countryCodeET.getText().toString().trim();

String mobile = mobileET.getText().toString().trim();

String message = messageET.getText().toString();

try {

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setData(Uri.parse("http://api.whatsapp.com/send?phone=" + countryCode + mobile + "&text=" + message));

startActivity(intent);

} catch (Exception e) {

e.printStackTrace();

}

});

}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:layout_gravity="center"
    android:gravity="center"
    tools:context=".MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Send Message to WhatsApp"
        android:textSize="18dp"
        android:textColor="#000"
        android:layout_marginBottom="30dp"/>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:background="#FAECEC">

        <EditText
            android:id="@+id/country_code"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ems="5"
            android:text="91"
            android:hint="Country Code"
            android:singleLine="true"
            android:ellipsize="end"/>

        <EditText
            android:id="@+id/mobile"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ems="10"
            android:hint="Mobile"
            android:inputType="phone"/>

    </LinearLayout>
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="91 is country code here change it accordingly\n if sending on non indian mobile number"/>

    <EditText
        android:id="@+id/message"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:lines="3"
        android:hint="Message" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:gravity="center">

        <Button
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="WhatsApp 1"
            android:layout_marginTop="20dp"/>

        <Button
            android:id="@+id/button2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="WhatsApp 2"
            android:layout_marginTop="20dp"/>

    </LinearLayout>

</LinearLayout>

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

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

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:layout_gravity="center"

android:gravity="center"

tools:context=".MainActivity">

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Send Message to WhatsApp"

android:textSize="18dp"

android:textColor="#000"

android:layout_marginBottom="30dp"/>

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:orientation="horizontal"

android:background="#FAECEC">

<EditText

android:id="@+id/country_code"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:ems="5"

android:text="91"

android:hint="Country Code"

android:singleLine="true"

android:ellipsize="end"/>

<EditText

android:id="@+id/mobile"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:ems="10"

android:hint="Mobile"

android:inputType="phone"/>

</LinearLayout>

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:gravity="center"

android:text="91 is country code here change it accordingly\n if sending on non indian mobile number"/>

<EditText

android:id="@+id/message"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:ems="10"

android:lines="3"

android:hint="Message" />

<LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:orientation="horizontal"

android:gravity="center">

<Button

android:id="@+id/button1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="WhatsApp 1"

android:layout_marginTop="20dp"/>

<Button

android:id="@+id/button2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="WhatsApp 2"

android:layout_marginTop="20dp"/>

</LinearLayout>

Screenshot

Android Studio Project Download