如何启动一个 ability?

通过 context 对象的 startAbility 方法官方文档:

import { common, Want } from '@kit.AbilityKit';
import { BusinessError } from '@kit.BasicServicesKit';

context = getContext(this) as common.UIAbilityContext; // UIAbilityContext

const want: Want = {
  deviceId: '', // deviceId为空表示本设备
  bundleName: 'com.example.system', // AppScope/app.json5 中找
  abilityName: 'SecondAbility', // 去对应的ability内部找module.json5
  // moduleName: 'entry' // moduleName非必选
  parameters: { // 携带参数

  }
};
this.context.startAbility(want, (err: BusinessError) => {
  if (err.code) {
    // 显式拉起Ability，通过bundleName、abilityName和moduleName可以唯一确定一个Ability
    console.error(`Failed to startAbility. Code: ${err.code}, message: ${err.message}`);
  }
});