Stage模型启动FA模型PageAbility

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@Componentstruct 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@Componentstruct 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UIAbilityContext        this.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));        });    }}