[Solved] Whatsapp not found with Intent.ACTION_SEND

AlexPes Asks: Whatsapp not found with Intent.ACTION_SEND
Can you please help me to understand why com.whatsapp package is not searchable when using Intent.ACTION_SEND, although it is searchable when usingIntent.ACTION_VIEW

UPDATED. Whatsapp is open and text put into message box for contact specified by phone number but is not sent

private val PUSH_BUTTON = "You send request for password, please wait"
private var url = "https://api.whatsapp.com/send?phone=$+10987654321&text=${
    URLEncoder.encode("HERE WILL BE A CODE IN THE NEAR FUTURE", "UTF-8")}"

class MainActivity : AppCompatActivity() {

init {
    instance = this

companion object {
    private var instance: MainActivity? = null

    fun applicationContext() : Context {
        return instance!!.applicationContext

override fun onCreate(savedInstanceState: Bundle?) {
    val button:Button = findViewById(R.id.button)
    button.setOnClickListener {
        Toast.makeText(applicationContext, PUSH_BUTTON, Toast.LENGTH_LONG).show()
        val packageManager = applicationContext().packageManager
        val intent = Intent(Intent.ACTION_VIEW)
        if (intent.resolveActivity(packageManager) != null) {
        } else {
            Toast.makeText(applicationContext, "WhatsApp is not installed", Toast.LENGTH_LONG).show()


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