HarmonyOS 应用开发之Stage模型启动FA模型PageAbility

news/2024/7/27 21:55:11/文章来源:https://blog.csdn.net/weixin_61845324/article/details/137185463

本小节介绍Stage模型的两种应用组件如何启动FA模型的PageAbility组件。

UIAbility启动PageAbility

UIAbility启动PageAbility和UIAbility启动UIAbility的方式完全相同。

说明： 需注意FA模型中abilityName由bundleName + AbilityName组成，具体见示例。

import common from '@ohos.app.ability.common';
import hilog from '@ohos.hilog';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';
import common from '@ohos.app.ability.common';const TAG: string = '[EntryAbility]';
const DOMAIN_NUMBER: number = 0xFF00;@Entry
@Component
struct Index {private context = getContext(this) as common.UIAbilityContext;build() {Button('StartFAModel').onClick(() => {let want: Want = {bundleName: 'com.samples.famodelabilitydevelop',abilityName: 'com.samples.famodelabilitydevelop.MainAbility'};this.context.startAbility(want).then(() => {hilog.info(DOMAIN_NUMBER, TAG, 'Start Ability successfully.');}).catch((error: BusinessError) => {hilog.error(DOMAIN_NUMBER, TAG, `Ability failed: ` + JSON.stringify(error));});})}// ...
}

UIAbility访问PageAbility（startAbilityForResult）

startAbilityForResult和startAbility的区别是当PageAbility销毁的时候会返回执行结果。

UIAbility通过startAbilityForResult启动PageABility和UIAbility通过startAbilityForResult启动UIAbility的代码一样，没有任何区别。

import common from '@ohos.app.ability.common';
import hilog from '@ohos.hilog';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';
import common from '@ohos.app.ability.common';const TAG: string = '[EntryAbility]';
const DOMAIN_NUMBER: number = 0xFF00;@Entry
@Component
struct Index {private context = getContext(this) as common.UIAbilityContext;build() {Button('StartFAModelWithResult').onClick(() => {let want: Want = {bundleName: 'com.samples.stagemodelabilitydevelop',abilityName: 'LifecycleAbility',};// context为调用方UIAbility的UIAbilityContextthis.context.startAbility(want).then(() => {hilog.info(DOMAIN_NUMBER, TAG, 'Succeeded in starting LifecycleAbility.');}).catch((err: BusinessError) => {hilog.error(DOMAIN_NUMBER, TAG, `Failed to start LifecycleAbility. Code is ${err.code}, message is ${err.message}`);});})}// ...
}

ExtensionAbility启动PageAbility

下面以ServiceExtensionAbility为例来说明ExtensionAbility启动PageAbility。ServiceExtensionAbility启动PageAbility和ServiceExtensionAbility启动UIAbility的方式完全相同。

import Extension from '@ohos.app.ability.ServiceExtensionAbility'
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';export default class ServiceExtension extends Extension {onCreate(want: Want) {console.info("ServiceExtension onCreate")}onDestroy() {console.info("ServiceExtension onDestroy")}onRequest(want: Want, startId: number) {console.info("ServiceExtension onRequest")let wantFA: Want = {bundleName: "com.ohos.fa",abilityName: "EntryAbility",};this.context.startAbility(wantFA).then(() => {console.info('Start Ability successfully.');}).catch((error: BusinessError) => {console.error("Ability failed: " + JSON.stringify(error));});}
}

为了能让大家更好的学习鸿蒙（HarmonyOS NEXT）开发技术，这边特意整理了《鸿蒙开发学习手册》（共计890页），希望对大家有所帮助：https://qr21.cn/FV7h05