ShareTextToWhatsappContact.kt

package com.agrawalsuneet.gist

import android.content.ActivityNotFoundException
import android.content.Context
import android.content.Intent
import android.content.pm.PackageManager
import android.net.Uri

object ShareTextToWhatsappContact {

    fun onWhatsAppShareClicked(context: Context, mobileNumber: String) {
        val url =
            "https://api.whatsapp.com/send?phone=${mobileNumber}&text=You%20can%20now%20send%20me%20audio%20and%20video%20messages%20on%20the%20app%20-%20Chirp.%20%0A%0Ahttps%3A//bit.ly/chirp_android"

        val intent = Intent(Intent.ACTION_VIEW).apply {
            this.data = Uri.parse(url)
            this.`package` = "com.whatsapp"
        }

        try {
            context.startActivity(intent)
        } catch (ex: ActivityNotFoundException) {
            //whatsapp not installled
        }
    }

    fun isPackageInstalled(context: Context, packageName: String): Boolean {
        return try {
            context.packageManager.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES)
            true
        } catch (ex: Exception) {
            false
        }
    }
}