鸿蒙5.0开发进阶：ArkTS API-ConnectOptions

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ConnectOptions

在连接指定的后台服务时作为入参，用于接收连接过程中的状态变化，如作为connectServiceExtensionAbility的入参，连接指定的ServiceExtensionAbility。

说明

本模块首批接口从API version 7开始支持。后续版本的新增接口，采用上角标单独标记接口的起始版本。

导入模块

import { common } from '@kit.AbilityKit';

onConnect

onConnect(elementName: ElementName, remote: rpc.IRemoteObject): void

建立连接时的回调函数。

系统能力：SystemCapability.Ability.AbilityRuntime.Core

参数：

参数名	类型	必填	说明
elementName	ElementName	是	Ability的elementName。
remote	rpc.IRemoteObject	是	IRemoteObject实例。

示例：

import { UIAbility, common, Want, AbilityConstant } from '@kit.AbilityKit';
import { bundleManager } from '@kit.AbilityKit';
import { rpc } from '@kit.IPCKit';

let connectWant: Want = {
  bundleName: 'com.example.myapp',
  abilityName: 'MyAbility'
};

let connectOptions: common.ConnectOptions = {
  onConnect(elementName: bundleManager.ElementName, remote: rpc.IRemoteObject) {
    console.log(`onConnect elementName: ${elementName}`);
  },
  onDisconnect(elementName: bundleManager.ElementName) {
    console.log(`onDisconnect elementName: ${elementName}`);
  },
  onFailed(code: number) {
    console.error(`onFailed code: ${code}`);
  }
};

class EntryAbility extends UIAbility {
  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
    let connection: number = this.context.connectServiceExtensionAbility(connectWant, connectOptions);
  }
}

onDisconnect

onDisconnect(elementName: ElementName): void

断开连接时的回调函数。

系统能力：SystemCapability.Ability.AbilityRuntime.Core

参数：

参数名	类型	必填	说明
elementName	ElementName	是	Ability的elementName。

示例：

import { UIAbility, common, Want, AbilityConstant } from '@kit.AbilityKit';
import { bundleManager } from '@kit.AbilityKit';
import { rpc } from '@kit.IPCKit';

let connectWant: Want = {
  bundleName: 'com.example.myapp',
  abilityName: 'MyAbility'
};

let connectOptions: common.ConnectOptions = {
  onConnect(elementName: bundleManager.ElementName, remote: rpc.IRemoteObject) {
    console.log(`onConnect elementName: ${elementName}`);
  },
  onDisconnect(elementName: bundleManager.ElementName) {
    console.log(`onDisconnect elementName: ${elementName}`);
  },
  onFailed(code: number) {
    console.error(`onFailed code: ${code}`);
  }
};

class EntryAbility extends UIAbility {
  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
    let connection: number = this.context.connectServiceExtensionAbility(connectWant, connectOptions);
  }
}

onFailed

onFailed(code: number): void

连接失败时的回调函数。

系统能力：SystemCapability.Ability.AbilityRuntime.Core

参数：

参数名	类型	必填	说明
code	number	是	连接指定Ability返回的结果code。 值为0表示连接成功，值为-1表示参数错误，值为-2表示未找到对应Ability。

示例：

import { UIAbility, common, Want, AbilityConstant } from '@kit.AbilityKit';
import { bundleManager } from '@kit.AbilityKit';
import { rpc } from '@kit.IPCKit';

let connectWant: Want = {
  bundleName: 'com.example.myapp',
  abilityName: 'MyAbility'
};

let connectOptions: common.ConnectOptions = {
  onConnect(elementName: bundleManager.ElementName, remote: rpc.IRemoteObject) {
    console.log(`onConnect elementName: ${elementName}`);
  },
  onDisconnect(elementName: bundleManager.ElementName) {
    console.log(`onDisconnect elementName: ${elementName}`);
  },
  onFailed(code: number) {
    console.error(`onFailed code: ${code}`);
  }
};

class EntryAbility extends UIAbility {
  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
    let connection: number = this.context.connectServiceExtensionAbility(connectWant, connectOptions);
  }
}