xxx must have one and only one property decorated with @BuilderParam, and its @BuilderParam expects no parameter

【问题描述】

报错信息：In the trailing lambda case, 'UserInfo' must have one and only one property decorated with @BuilderParam, and its @BuilderParam expects no parameter

1. /**
   
2. * 14.学习自定义组件
   
3. */
   
4. import toast from '../utils/Utils'
   
5. import { UserInfo } from './components/MyComponents'
   
6. 
   
7. @Builder
   
8. function Avatar() {
   
9.   Row() {
   
10.     Text("头像:")
    
11.     Image($r("app.media.avatar"))
    
12.       .fitOriginalSize(true)
    
13.       .height(50)
    
14.   }.backgroundColor(Color.Pink)
    
15. }
    
16. 
    
17. 
    
18. @Entry
    
19. @Component
    
20. struct Learn13CustomComponent {
    
21.   build() {
    
22.     Column({ space: 10 }) {
    
23.       UserInfo({ name: "崔兴旺" }).backgroundColor(Color.Orange).width(300).height(150)
    
24.       UserInfo({
    
25.         name: "张三", say: (_name: string) => {
    
26.           toast(`${_name}说:hello`)
    
27.         },
    
28.       }){
    
29.         Avatar()
    
30.       }
    
31. 
    
32.       UserInfo({ name: "李四" })
    
33.     }
    
34.   }
    
35. }
    
36. 
    

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子组件代码：

1. import toast from "../../utils/Utils"
   
2. 
   
3. /**
   
4. * 这是插槽中默认的内容
   
5. */
   
6. @Builder
   
7. function defaultContent() {
   
8.   Text("我是默认内容")
   
9. }
   
10. 
    
11. 
    
12. @Component
    
13. export struct UserInfo {
    
14.   @State name: string = ""
    
15.   @State age: number = 0
    
16.   say = (_name: string) => {
    
17.     toast(`${_name}说:你好`)
    
18.   }
    
19. 
    
20.   @Builder
    
21.   defaultContent2() {
    
22.     Text("我是默认内容2")
    
23.   }
    
24. 
    
25.   // @Require//父组件必选传给本子组件
    
26.   @BuilderParam
    
27.   Content: () => void = defaultContent
    
28.   @BuilderParam
    
29.   Content2: () => void = this.defaultContent2
    
30. 
    
31.   build() {
    
32.     Column() {
    
33.       Text(this.name).fontSize(20).backgroundColor(Color.Red)
    
34.       Text(this.age.toString()).fontSize(20).backgroundColor(Color.Blue)
    
35.       this.Content()
    
36.       this.Content2()
    
37.     }.backgroundColor(Color.Green).width(190).height(140).onClick(() => {
    
38.       this.say(this.name)
    
39.     })
    
40.   }
    
41. }
    
42. 
    

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【运行环境】

SDK版本："compatibleSdkVersion": "5.0.0(12)"

@BuilderParam定义了两个，但是闭包场景只能一个哈

参考下这个：https://gitee.com/openharmony/do ... 6%E7%BB%84%E4%BB%B6