Android WebView with kotlin - android kotlin example

Android WebView with kotlin - android kotlin example



activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:ads="http://schemas.android.com/apk/res-auto"    android:id="@+id/container"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">
    <WebView            android:id="@+id/webview"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:visibility="visible"    ></WebView>
</LinearLayout>

MainActivity.kt

import android.app.*
import android.content.*
import android.graphics.*
import android.net.*
import android.os.*
import android.support.v7.app.*
import android.util.*
import android.webkit.*


class MainActivity : AppCompatActivity() {

    private var webView: WebView? = null    internal lateinit var progressDialog: ProgressDialog
    internal var url = "https://www.google.com"    
    override fun onBackPressed() {
        if (webView!!.canGoBack()) {
            webView!!.goBack()
        } else {
            super.onBackPressed()
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        
        webView = findViewById(R.id.webview)
        webView!!.settings.javaScriptEnabled = true        webView!!.settings.builtInZoomControls = true        webView!!.settings.setSupportZoom(true)
        webView!!.settings.loadWithOverviewMode = true        webView!!.loadUrl(url)
        webView!!.webViewClient = MyWebViewClient()
              
    }
    
    inner class MyWebViewClient : WebViewClient() {

        override fun onPageStarted(view: WebView, url: String, favicon: Bitmap) {
            Log.d("url", "url==" + url)
            
                progressDialog = ProgressDialog(this@MainActivity)
                progressDialog.setTitle("Loading...")
                progressDialog.setMessage("Please wait.")
                progressDialog.setCancelable(true)
                progressDialog.isIndeterminate = true                progressDialog.setCanceledOnTouchOutside(false)
                progressDialog.show()
           

        }

        override fun shouldOverrideUrlLoading(view: WebView, request: WebResourceRequest?): Boolean {
            if (request != null) {
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                  
                  view.loadUrl(url)
                    
                }
                return true            } else {
                return false            }

        }

        override fun shouldOverrideUrlLoading(view: WebView, url: String): Boolean {
            
            view.loadUrl(url)
            
            return true        }

        override fun onPageFinished(view: WebView, url: String) {
            
            if (progressDialog.isShowing) {
                progressDialog.dismiss()
                webView!!.isEnabled = true            }
        }
    }
}