Add app specific content sharing button or action send button on Android Menu bar

Readme.md

Read more about the implementation here: https://www.josevarghese.com/share-button-to-share-app-content-to-specific-app/

MainActivity.java

import android.content.Intent;
import android.net.Uri


@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main_menu,menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
     if (item.getItemId() == R.id.share_button) {
            try {
                Intent sharingIntent = new Intent(Intent.ACTION_SEND);
                sharingIntent.setType("text/plain");
                String shareBody = "Hey, I'm using *Name of the Sticker App* for sending awesome Stickers on WhatsApp\n \nDownload it now: https://play.google.com/store/apps/details?id=com.yourappurlhere";
                sharingIntent.putExtra(Intent.EXTRA_TEXT, shareBody);
                     //change the app package id as your wish for sharing content to the specific one, WhatsApp's package id is com.whatsapp, and for facebook is com.facebook.katana
                sharingIntent.setPackage("com.whatsapp");
                startActivity(sharingIntent);
            } catch (android.content.ActivityNotFoundException ex) {
                Intent sharingIntent1 = new Intent(Intent.ACTION_SEND);
                sharingIntent1.setType("text/plain");
                String shareBody = "Hey, I'm using the best app for sending awesome Stickers called *Your App Name Here* \n \nDownload it now: https://play.google.com/store/apps/details?id=com.yourappurlhere";
                String shareSubject = "Stickers Android App";
                sharingIntent1.putExtra(Intent.EXTRA_TEXT, shareBody);
                sharingIntent1.putExtra(Intent.EXTRA_SUBJECT, shareSubject);
                startActivity(Intent.createChooser(sharingIntent1, "Share with friends"));
            }
        } else {
            return super.onOptionsItemSelected(item);
      }
        return true;
    }