HarmonyOS ArkTS实现一个回调接口，为什么报错提示Object literal must correspond to some explicitly declared class or interface \(arkts-no-untyped-obj-literals\)？

Question

用interface创建一个接口准备用来作为回调接口使用，实现的报错，arkts-no-untyped-obj-literals 。

Answer 1

参考如下写法：

function getText(data:onCallBack){
  data.callBackResult('test')
}

function getText1(){
  let callBack:onCallBack = {
    callBackResult(str:string){
      console.debug('callBackResult value:' + str)
    }
  }
  getText(callBack)
}

export interface onCallBack {
  callBackResult: (str: string) => void
}