Stage模型

版本：Api9，Stage模型

import mediaLibrary from '@ohos.multimedia.mediaLibrary';import Ability from '@ohos.application.Ability';import AbilityStage from "@ohos.application.AbilityStage";import context from '@ohos.application.context';@Entry@Componentstruct Index {  @State message: string = '选择单张图片'  @State img: string = ''  build() {    Row() {      Column() { Text(this.message)   .fontSize(50)   .fontWeight(FontWeight.Bold).onClick(()=>{   let context = getContext(this) as any   let startParmameter = {     bundleName:"com.ohos.photos",     abilityName: "com.ohos.photos.MainAbility",     parameters: {uri: "singleselect"     }   };   context.startAbilityForResult(startParmameter).then((result) => {     console.info(`startAbilityForResult Promise.resolve is called, result.resultCode =  ${JSON.stringify(result)}`)     let want = result['want'];     console.info(`test select single ${JSON.stringify(want)}`);     if (want != null && want != undefined) {let param = want['parameters'];console.info(`test select single ${JSON.stringify(param)}`);if (param != null && param != undefined) {  let uri = param['select-item-list'];  this.img=param['select-item-list'];  console.info(`图片路径是 ${uri}`);}     }   }, (error) => {     console.info(`startAbilityForResult Promise.Reject is called, error.code = ${error.code}`)   }) }) Image(this.img).width(50).height(50)      .width('100%')    }    .height('100%')  }}}