How to share text to WhatsApp from my app?

Question

I develop an app with a functionality for sharing text. This is working fine except for WhatsApp. What should I do? Is there any specific API for that?

Answer 1

 message = "this msg is sent from My App Time Track"
            val intent = Intent()//Empty as we don't know the destination i.e implicit intent
            intent.action = Intent.ACTION_SEND//intent will do work of sending something
            intent.putExtra(Intent.EXTRA_TEXT, message)//send given message
            intent.putExtra(Intent.EXTRA_SUBJECT,"Download Time Track App")//give the subject for your message
            //Intent.Extra_Text is actually a globol key
            intent.type = "plane/text"//type of intent

            startActivity(Intent.createChooser(intent,"Send to: "))//createChooser is a dialogBox which shows app available to send data