If you’re an expert with Android, you don’t have to relearn everything to use Flutter.
This document can be used as a cookbook by jumping around and finding questions that are most relevant to your needs. Widgets, however, have a few differences when compared with a view.
For example, here is how you can toggle between two widgets when you click on a API as well, since it is based on the same low-level rendering engine, Skia.
Unlike Android’s view hierarchy system where the framework mutate views, widgets in Flutter are immutable.
This allows Flutter widgets to be very lightweight.
Flutter doesn’t really have a direct equivalent to activities and fragments; rather, in Flutter you navigate between screens, using a s is to call external components such as a Camera or File picker.
For this, you would need to create a native platform integration (or use an existing plugin). Generated Plugin Registrant; public class Main Activity extends Flutter Activity import 'package:flutter/material.dart'; import 'package:flutter/services.dart'; void main() class Sample App extends Stateless Widget class Sample App Page extends Stateful Widget class _Sample App Page State extends State that is attached to the main thread.
When Flutter is ready to process the data it will request it via a platform channel, and we can then send it across from the native side: package com.example.shared; import android.content. Since Flutter is single threaded and runs an event loop (like Node.js), you don’t have to worry about thread management or spawing background threads.