configureFlutterEngine方法在flutter中编写kotlin代码的问题

Question

我想在flutter中编写特定于平台的代码，根据flutter留档，我们应该覆盖configureFlutterEngine方法，如下面的代码片段：

override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
    GeneratedPluginRegistrant.registerWith(flutterEngine)
    MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL).setMethodCallHandler {
      call, result ->
      // Note: this method is invoked on the main thread.
      // TODO
    }
  }

但当我将flutterEngine传递给GeneratedPluginRegistrant时。registerWith（），它表示：

类型不匹配：推断的类型是FlutterEngine，但Plugin注册表！是预期的

我已经在github中检查了下面的链接，但没有找到任何适合我的解决方案。https://github.com/flutter/flutter/issues/45231

以下是用于编写平台特定代码的颤振文档链接。https://flutter.dev/docs/development/platform-integration/platform-channels?tab=android-channel kotlin选项卡#示例项目

Answer 1

这就是我在kotlin使用它的方式

import androidx.annotation.NonNull
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(@NonNull flutterEngine: FlutterEngine) {
    super.configureFlutterEngine(flutterEngine)
    MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL).setMethodCallHandler {
      call, result ->
      // Note: this method is invoked on the main thread.
      // TODO
    }
  }
}

确保使用如图所示的相同导入。读取文档

Answer 2

我使用onCreate（）代替configureflatterengine（）方法，现在工作正常。

override fun onCreate(savedInstanceState: Bundle?) {
    GeneratedPluginRegistrant.registerWith(this)
    MethodChannel(flutterView, CHANNEL).setMethodCallHandler {
      call, result ->
      // Note: this method is invoked on the main thread.
      // TODO
    }
  }

而不是传递flutterEngine.dartExecutor.binaryMessenger到MachodChannel，传递flutterView。