class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        findViewById<Button>(R.id.btnWeb).setOnClickListener {
            startActivity(Intent(Intent.ACTION_VIEW, Uri.parse("https://www.ya.ru")))
        }
    }
}

class Browser : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_browser)
        val webView = findViewById<WebView>(R.id.webView)
        webView.webViewClient = WebViewClient()
        val data: Uri? = intent.data
        webView.loadUrl(data.toString())
    }
}