In-depth understanding of the communication between Android and Flutter

In mobile application development, Android and Flutter are two very popular frameworks. Android is a mature mobile operating system, and Flutter is a cross-platform UI framework. In some cases, we may need to communicate between Android and Flutter to implement more complex functionality or integrate existing functionality.

This article will introduce the communication method between Android and Flutter in detail and provide corresponding source code examples. We will cover the following communication methods:

1. method call communication

Method calling is one of the simplest and most direct ways of communication between Android and Flutter. Through the MethodChannel class provided by Flutter, we can call each other's methods between Android and Flutter.

First, on the Android side, we need to create a MethodChannel object in MainActivity and define a method to handle the call request from Flutter:

// 在MainActivity.java中
private static final String CHANNEL = "com.example.flutter_channel";