HarmonyOS 组件切换深色模式不生效

import { NodeController, FrameNode, BuilderNode } from '@kit.ArkUI' 
import EnvironmentCallback from '@kit.AbilityKit'; 
class Param { 
  public text: string; 
 
  constructor(text: string) { 
    this.text = text; 
  } 
} 
@Builder 
function text(param: Param) { 
  // foregroundColor ，浅色模式时为黑色，深色模式时为白色 
  Text(param.text).fontColor($r("app.color.app_title_color")).fontSize(32) 
} 
class MyNodeController extends NodeController { 
  private rootNode: BuilderNode<[]> | null = null; 
 
  // other codes for node controller 
  makeNode(context: UIContext): FrameNode | null { 
    this.rootNode = new BuilderNode(context); 
    this.rootNode.build(wrapBuilder<Param[]>(text), new Param("123")) 
 
    return this.rootNode.getFrameNode(); 
  } 
} 
@Entry 
@Component 
struct BuilderNodeDarkMode { 
  private myNodeController = new MyNodeController() 
  private message: string = "hello"; 
 
  aboutToAppear(): void { 
    const that = this; 
    let envCallback: EnvironmentCallback = { 
      onConfigurationUpdated(config) { 
        that.myNodeController.rebuild(); 
      }, 
      onMemoryLevel(level) { 
        console.log('onMemoryLevel level: ${level}'); 
      }, 
    }; 
    let applicationContext = getContext(this).getApplicationContext(); 
    applicationContext.on('environment', envCallback); 
  } 
  build() { 
    Column() { 
      Row() { 
        // 组件已经展示后，系统切换深色模式，颜色变化正常 
        Text(this.message).fontColor($r("app.color.app_title_color")).fontSize(32) 
 
        // 组件已经展示后，系统切换深色模式，颜色没有变化 
        NodeContainer(this.myNodeController) 
      } 
      .height('100%') 
    } 
    .width('100%') 
  } 
}
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