How do you handle network requests and APIs in Flutter?

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In Flutter, handling network requests and APIs is typically done using the http package or more advanced libraries like Dio.

Basic Steps Using http Package:

1. Add dependency in pubspec.yaml

2. Import the package

3. Make network requests (GET, POST, etc.):

4. Handle JSON serialization:
   Use dart:convert to decode JSON into Dart objects. For complex data, create model classes and parse JSON into them.

Advanced Usage:

• Dio package offers more features like interceptors, request cancellation, and file upload.

• Use FutureBuilder widget in UI to asynchronously fetch and display data.

• Manage API state with state management tools like Provider, Bloc, or Riverpod.

Best Practices:

• Handle errors and timeouts gracefully.

• Secure API keys and sensitive data.

• Use asynchronous programming (async/await) to avoid blocking the UI.

In summary, Flutter handles network requests efficiently with packages like http or Dio, making it straightforward to consume APIs and integrate backend data into mobile apps.

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