HarmonyOS ArkTS接口回调的案例

export interface MyInterDemo {  
  func_1: () => void;  
  func_2: () => boolean;  
  func_3: (arg: string) => void;  
}  
  
//TestInterfacePage.ets  
import { MyInterDemo } from ‘…/interface/MyInterDemo’  
  
@Entry  
@Component  
struct TestInterfacePage {  
  
  testInter(inter: MyInterDemo) {  
    console.log(‘testInter’);  
    inter.func_1();  
    inter.func_2();  
    inter.func_3(‘hello’);  
  }  
  
  build() {  
    Row() {  
      Column() {  
        Button(‘Test interface’)  
        .onClick(() => {  
          let demo: MyInterDemo = {  
            func_1: () => {  
              console.log(‘func_1’);  
            },  
            func_2: () => {  
              console.log(‘func_2’);  
              return true;  
            },  
            func_3: (arg: string) => {  
              console.log(‘func_3:’ + arg);  
            }  
          }  
          this.testInter(demo);  
        })  
      }  
      .width(‘100%’)  
    }  
    .height(‘100%’)  
  }  
}