Create WebView in an Android App using Kotlin

This example demonstrates how to create a WebView in an Android App using Kotlin.

Step 1 − Create a new project in Android Studio, go to File ? New Project and fill all required details to create a new project.

Example

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   tools:context=".MainActivity">
   <WebView
      android:id="@+id/webView"
      android:layout_width="match_parent"
      android:layout_height="match_parent">
   </WebView>
</RelativeLayout>

Step 3 − Add the following code to src/MainActivity.kt

Example

import android.os.Bundle
import android.webkit.WebView
import android.webkit.WebViewClient
import androidx.appcompat.app.AppCompatActivity
class MainActivity : AppCompatActivity() {
   private val webView: WebView? = null
   override fun onCreate(savedInstanceState: Bundle?) {
      super.onCreate(savedInstanceState)
      setContentView(R.layout.activity_main)
      title = "KotlinApp"
      val webView = findViewById<WebView>(R.id.webView)
      webView.webViewClient = WebViewClient()
      webView.loadUrl("https://www.google.com")
      val webSettings = webView.settings
      webSettings.javaScriptEnabled = true
   }
   override fun onBackPressed() {
      if (webView!!.canGoBack()) {
         webView.goBack()
      } else {
         super.onBackPressed()
      }
   }
}

Step 4 − Add the following code to androidManifest.xml

Example

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.myapplication">
   <application
   android:allowBackup="true"
   android:icon="@mipmap/ic_launcher"
   android:label="@string/app_name"
   android:roundIcon="@mipmap/ic_launcher_round"
   android:supportsRtl="true"
   android:theme="@style/AppTheme">
      <activity android:name=".MainActivity">
         <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
         </intent-filter>
      </activity>
   </application>
</manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click the Run icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen