-------------------------------------------------------------------------------------
      activity_main.xml
-------------------------------------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <EditText
            android:id="@+id/edtUrl"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:hint="URL을 입력하세요."
            android:singleLine="true" >
        </EditText>

        <Button
            android:id="@+id/btnGo"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="이동" />

        <Button
            android:id="@+id/btnBack"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="이전" />
    </LinearLayout>

    <WebView
        android:id="@+id/webView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clickable="true" />
</LinearLayout>

------------------------------------------------------------------------------------
    MainActivity.kt
------------------------------------------------------------------------------------
class MainActivity : AppCompatActivity() {
    lateinit internal var edtUrl : EditText
    lateinit internal var btnGo : Button
    lateinit internal var btnBack : Button
    lateinit internal var web : WebView

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        getSupportActionBar()!!.setDisplayShowHomeEnabled(true)
        getSupportActionBar()!!.setIcon(R.drawable.web)

        edtUrl = findViewById<EditText>(R.id.edtUrl)
        btnGo = findViewById<Button>(R.id.btnGo)
        btnBack = findViewById<Button>(R.id.btnBack)
        web = findViewById<WebView>(R.id.webView1)

        web.webViewClient = CookWebViewClient()

        var webSet = web.settings
        webSet.builtInZoomControls = true

        btnGo.setOnClickListener {
            web.loadUrl(edtUrl.text.toString())
        }

        btnBack.setOnClickListener {
            web.goBack()
        }
    }

    class CookWebViewClient : WebViewClient1() {
        @Deprecated("Deprecated in Java")
        override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
            return super.shouldOverrideUrlLoading(view, url)
        }
    }
}

------------------------------------------------------------------------------------
 ***  AndroidManifest.xml
------------------------------------------------------------------------------------
 <uses-permission android:name="android.permission.INTERNET"/>

<application
              :
        android:label="간단 웹브라우저"
        android:theme="@style/Theme.AppCompat.Light.DarkActionBar"