how to send messages using intent in android studio code example

Example 1: android send email intent with chooser

class MailToExample{
private val url = "https://your_site_addres.xyz"

	@SuppressLint("SetJavaScriptEnabled")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_mailto)

        val settings: WebSettings = mWebView.settings
        settings.javaScriptEnabled = true
        settings.allowFileAccess = true
        mWebView.webViewClient = object : WebViewClient() {
            override fun shouldOverrideUrlLoading(view: WebView?, urlin: String?): Boolean {
                if (urlin != null) {
                    if (urlin.contains("mailto:")) {
                     	val emailIntent = Intent(Intent.ACTION_SENDTO, Uri.parse(urlin))
                        
                      	// or another way for email creation 
                        // val mail = urlin.replace("mailto:", "")
                        // val emailIntent = Intent(Intent.ACTION_SENDTO, Uri.fromParts("mailto", mail, null))
                        
                      	emailIntent.putExtra(Intent.EXTRA_SUBJECT, "subject")
                        emailIntent.putExtra(Intent.EXTRA_TEXT, "body")
                        startActivity(Intent.createChooser(emailIntent, "Send email"))
                    } else {
                        view?.loadUrl(urlin)
                    }
                }
                return true
            }
        }
        mWebView.postUrl(url)
    }
}

// the case created by reading this resource examples for java
// https://stackoverflow.com/questions/8701634/send-email-intent/8701718#8701718

Example 2: get requestcode from intent android

getIntent().getAction();