How to integrate InAppWebview in flutter - flutter_inappwebview

Tutorial: Integrating InAppWebView in Flutter

Step 1: Set up the Flutter Project

1. Open Android Studio IDE.
2. Create a new Flutter project named "flutter_inapp_webview_example".
3. Remove the default counter code provided by Flutter.
4. Add a button to open a website in the app.

Step 2: Add Flutter InAppWebView Library

1. Add the flutter_inappwebview library to the dependencies section of your pubspec.yaml file.
2. Click on the "Pub get" button to install the library in your Flutter app.

Step 3: Create a New Page for the Website

1. Create a new Dart file named my_website.dart.
2. Import material.dart and create a stateful widget named MyWebsite.

Step 4: Implement Navigation to the Website

1. In the MyWebsite widget, use Navigator.push to navigate to the web page when the button is pressed.
2. Import the flutter_inappwebview library to make use of its widgets.

Step 5: Set Up the InAppWebView

1. Declare a double variable named progress to track the loading progress of the website.
2. Initialize an InAppWebViewController variable to control the website.
3. Set up the InAppWebView widget with the necessary properties like initialUrl to load the website.

Step 6: Display a Progress Indicator

1. Use the onProgressChanged property to update the loading progress.
2. Show a LinearProgressIndicator based on the loading progress.
3. Once the website is fully loaded (progress reaches 100), hide the progress indicator.

Step 7: Ensure Safe Area and Back Navigation

1. Wrap the scaffold with a SafeArea widget to prevent overlapping with the status bar.
2. Use a WillPopScope widget to control the back button press behavior.
3. Check if the user can go back to the previous page using webViewController.canGoBack().
4. Navigate back to the previous page if possible when the back button is pressed.

Step 8: Test the Implementation

1. Run the Flutter app to see the InAppWebView in action.
2. Verify that the progress indicator displays while the website is loading.
3. Ensure that the back button navigates back to the previous page within the app.

By following these steps, you can successfully integrate InAppWebView in your Flutter app and provide a seamless web browsing experience to your users.