#鸿蒙通关秘籍#如何通过@Provide和@Consume装饰器在HarmonyOS中实现跨层级的组件通信？

@Provide装饰器在祖先组件中定义状态，@Consume装饰器在后代组件中使用此状态以实现跨层级通信。示例如下：

// 祖先组件
@Component
struct AncestorComponent {
  @Provide sharedResource: string = 'shared value'

  build() {
    IntermediateComponent()
  }
}

// 中间组件
@Component
export struct IntermediateComponent {
  build() {
    DescendantComponent()
  }
}

// 后代组件
@Component
export struct DescendantComponent {
  @Consume sharedResource: string

  build() {
    Text(this.sharedResource)
      .onClick(() => {
        this.sharedResource = 'Modified by Descendant'
      })
  }
}