保证迁移连续性，由于迁移加载时，目标端拉起的应用可能执行过自己的迁移状态设置命令（如：冷启动时目标端在onCreate中设置了INACTIVE；热启动时对端已打开了不可迁移的页面，迁移状态为INACTIVE等情况）。为了保证迁移过后的应用依然具有可以迁移回源端的能力，应在onCreate和onNewWant的迁移调用判断中，将迁移状态设置为ACTIVE。

// EntryAbility.ets
import { AbilityConstant, UIAbility, Want } from '@kit.AbilityKit';
export default class EntryAbility extends UIAbility {
  // ...
  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void {
    // ...
    // 迁移冷启动时，设置状态为可迁移
    this.context.setMissionContinueState(AbilityConstant.ContinueState.ACTIVE, (result) => {
      console.info(`setMissionContinueState: ${JSON.stringify(result)}`);
    });
  }
  onNewWant(want: Want, launchParam: AbilityConstant.LaunchParam): void {
    // ...
    // 迁移热启动时，设置状态为可迁移
    if (launchParam.launchReason == AbilityConstant.LaunchReason.CONTINUATION) {
      this.context.setMissionContinueState(AbilityConstant.ContinueState.ACTIVE, (result) => {
        console.info('setMissionContinueState ACTIVE result: ', JSON.stringify(result));
      });
    }
  }
  // ...
}

本文主要引用HarmonyOS官方文档