#鸿蒙通关秘籍#如何使用@Builder自定义菜单内容

当默认的菜单样式无法满足开发需求时，可以通过@Builder进行自定义菜单内容。下面是创建自定义菜单内容的实现方法：

class Tmp {
  iconStr2: ResourceStr = $r("app.media.view_list_filled")

  set(val: Resource) {
    this.iconStr2 = val
  }
}

@Entry
@Component
struct menuExample {
  @State select: boolean = true
  private iconStr: ResourceStr = $r("app.media.view_list_filled")
  private iconStr2: ResourceStr = $r("app.media.view_list_filled")

  @Builder
  SubMenu() {
    Menu() {
      MenuItem({ content: "复制", labelInfo: "Ctrl+C" })
      MenuItem({ content: "粘贴", labelInfo: "Ctrl+V" })
    }
  }

  @Builder
  MyMenu() {
    Menu() {
      MenuItem({ startIcon: $r("app.media.icon"), content: "菜单选项" })
      MenuItem({ startIcon: $r("app.media.icon"), content: "菜单选项" }).enabled(false)
      MenuItem({
        startIcon: this.iconStr,
        content: "菜单选项",
        endIcon: $r("app.media.arrow_right_filled"),
        builder: this.SubMenu
      })
      MenuItemGroup({ header: '小标题' }) {
        MenuItem({ content: "菜单选项" })
          .selectIcon(true)
          .selected(this.select)
          .onChange((selected) => {
            console.info("menuItem select" + selected);
            let Str: Tmp = new Tmp()
            Str.set($r("app.media.icon"))
          })
        MenuItem({
          startIcon: $r("app.media.view_list_filled"),
          content: "菜单选项",
          endIcon: $r("app.media.arrow_right_filled"),
          builder: this.SubMenu
        })
      }

      MenuItem({
        startIcon: this.iconStr2,
        content: "菜单选项",
        endIcon: $r("app.media.arrow_right_filled")
      })
    }
  }

  build() {
    // ...
  }
}