06-鸿蒙4.0学习之后代组件数据双向Provide和Consume

代码

@Entry
@Component
struct ProvideUI {@State message: string = 'Hello World'// @Provide wechat: string = '我是祖父的值'@Provide('theshy') wechat: string = '我是祖父的值'build() {Row() {Column() {Text(this.wechat).fontSize(50).fontWeight(FontWeight.Bold)Button('修改祖父的值').onClick(() => {this.wechat = '1123'})Divider()CompA()}.width('100%')}.height('100%')}
}@Component
struct CompA {build() {CompB()}
}@Component
struct CompB {// @Consume wechat: string@Consume('theshy') stdy: stringbuild() {Column() {Text(this.stdy)Button('修改孙子的值').onClick(() => {this.stdy = '2211'})}}
}