Flutter与Android原生层交互的插件，内容还在持续扩展中. 现有方法 1、音量控制（音量加、音量减、设置音量、获取当前音量、静音、取消静音 2、Toast 显示方法 3、串口通讯（串口开启、串口发送、串口读取、串口关闭 4、i2c通讯接口（i2c写入、i2c读取
If the app should be notified when a device is attached, add device_filter.xml to your project's res/xml/ directory and configure in your AndroidManifest.xml.
This project is a starting point for a Flutter plug-in package, a specialized package that includes platform-specific implementation code for Android and/or iOS.
For help getting started with Flutter, view our online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference.