Flutter-视频系列--图解-Android-原生集成-Flutter-Module

import io.flutter.embedding.android.FlutterActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugin.common.MethodChannel
 
class MainActivity: FlutterActivity() {
    private val CHANNEL = "samples.flutter.dev/battery"
 
    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL).setMethodCallHandler { call, result ->
            // 获取电池电量
            if (call.method == "getBatteryLevel") {
                val batteryLevel = getBatteryLevel()
                if (batteryLevel != -1) {
                    result.success(batteryLevel)
                } else {
                    result.error("UNAVAILABLE", "Battery level not available", null)
                }
            } else {
                result.notImplemented()
            }
        }
    }
 
    private fun getBatteryLevel(): Int {
        // 这里应该是获取电池电量的逻辑，示例中使用硬编码
        return 60 
    }
}

这个代码示例展示了如何在Android原生项目中创建一个Flutter模块，并且如何在Flutter中调用原生Android方法来获取电池电量。这是一个简化的例子，实际的电池电量获取逻辑需要依赖Android系统API来实现。