How to listen for a WebView finishing loading a URL in Android?

AndroidApps/ApplicationsMobile Development

This example demonstrates how do I listen for a webview finishing loading a URL in android.

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

Step 2 − Add the following code to res/layout/activity_main.xml.

<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"
   android:padding="4dp"
   tools:context=".MainActivity">
   <TextView
      android:id="@+id/textView"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:textSize="24sp"
      android:textColor="#000000"
      android:padding="5dp" />
   <WebView
      android:id="@+id/webView"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:layout_below="@id/textView"/>
   <Button
      android:id="@+id/btnLoad"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="Load URL"
      android:layout_alignParentBottom="true"/>
</RelativeLayout>

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

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
   WebView webView;
   TextView textView;
   Button btnLoad;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      textView = findViewById(R.id.textView);
      btnLoad = findViewById(R.id.btnLoad);
      webView = findViewById(R.id.webView);
      webView.setWebViewClient(new WebViewClient());
      btnLoad.setOnClickListener(new View.OnClickListener() {
         @Override
         public void onClick(View v) {
            webView.setWebViewClient(new WebViewClient() {
               public void onPageFinished(WebView view, String weburl) {
                  Toast.makeText(MainActivity.this, "Your WebView is Loaded....", Toast.LENGTH_LONG).show();
            }
         });
         webView.setWebChromeClient(new WebChromeClient() {
            public void onProgressChanged(WebView view, int newProgress) {
               textView.setText("Page loading : " + newProgress + "%");
                  if (newProgress == 100) {
                     textView.setText("Page Loaded.");
                  }
               }
            });
            webView.loadUrl("http://www.tutorialspoint.com");
         }
      });
   }
}

Step 4 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">
   <uses-permission android:name="android.permission.INTERNET"/>
   <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 the android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen −

Click here to download the project code.

raja
Published on 26-Nov-2019 07:40:15
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