window.getDeviceDetails is not a function in razorpay integration with flutter

Understanding the Error: ‘window.getDeviceDetails is not a function’

The Problem

The error “window.getDeviceDetails is not a function” typically arises during Razorpay integration with Flutter applications. This error indicates that the ‘window.getDeviceDetails’ function, required for obtaining device information, is not accessible within the Flutter environment.

Why it Happens

• Flutter’s Cross-Platform Nature: Flutter applications run on various platforms like Android, iOS, Web, and Desktop. The ‘window.getDeviceDetails’ function is specific to web platforms and unavailable in other environments.
• Razorpay SDK Assumptions: The Razorpay SDK might assume the availability of ‘window.getDeviceDetails’ for certain functionality, potentially leading to this issue when used in non-web Flutter projects.

Resolutions

Solution 1: Platform-Specific Code

The most effective solution is to handle the device information retrieval differently depending on the target platform.

Example Code (Dart)

import 'dart:io' show Platform;

// Function to get device details
Future> getDeviceDetails() async {
  if (Platform.isAndroid) {
    // Android-specific implementation
    // Use platform-specific plugins to get device information
    // ...
  } else if (Platform.isIOS) {
    // iOS-specific implementation
    // Use platform-specific plugins to get device information
    // ...
  } else if (Platform.isWeb) {
    // Web-specific implementation
    try {
      return await window.getDeviceDetails();
    } catch (e) {
      print('Error getting device details: $e');
      return {};
    }
  } else {
    // Unsupported platform
    print('Unsupported platform for device details');
    return {};
  }
}

Solution 2: Using a Platform-Specific Plugin

Utilize platform-specific plugins designed for obtaining device information on different platforms. This offers a more structured and maintainable approach.

Recommended Plugins:

• device_info_plus: Provides a cross-platform way to retrieve device information (including device ID, model, and operating system).
• flutter_device_info: A similar plugin offering access to device details for both Android and iOS.

Solution 3: Adapting Razorpay Integration

If your Razorpay integration heavily relies on ‘window.getDeviceDetails,’ consider alternative approaches.

Options:

• Using Other Razorpay Methods: Explore other Razorpay APIs that do not require device details (e.g., using the Razorpay Checkout API with minimal device information).
• Customizing the Razorpay SDK: For advanced scenarios, you might need to fork the Razorpay SDK and modify it to work with the device details retrieval mechanism appropriate for your project.

Best Practices

Avoid Browser-Specific Code

While it’s okay to adapt code for different platforms, avoid relying heavily on browser-specific functionality (like ‘window.getDeviceDetails’) within your Flutter application.

Use Platform-Specific Plugins

Leverage plugins designed for platform-specific operations. They simplify development and improve maintainability.

Review Razorpay Documentation

Consult the Razorpay documentation for their recommended practices regarding integration in Flutter applications.

Conclusion

The “window.getDeviceDetails is not a function” error in Razorpay integration with Flutter is primarily a consequence of the mismatch between platform capabilities and SDK expectations. Employing platform-specific code, appropriate plugins, or alternative Razorpay methods can effectively address this issue and ensure robust integration across different platforms.