#鸿蒙学习大百科#如何订阅进程内UIAbility生命周期变化？

onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void {
  const DOMAIN_NUMBER: number = 0xFF00;
  // 定义生命周期回调对象
  let abilityLifecycleCallback: AbilityLifecycleCallback = {
    // 当UIAbility创建时被调用
    onAbilityCreate(uiAbility) {
    },
    // 当窗口创建时被调用
    onWindowStageCreate(uiAbility, windowStage: window.WindowStage) {
    },
    // 当窗口处于活动状态时被调用
    onWindowStageActive(uiAbility, windowStage: window.WindowStage) {
    },
    // 当窗口处于非活动状态时被调用
    onWindowStageInactive(uiAbility, windowStage: window.WindowStage) {
    },
    // 当窗口被销毁时被调用
    onWindowStageDestroy(uiAbility, windowStage: window.WindowStage) {
    },
    // 当UIAbility被销毁时被调用
    onAbilityDestroy(uiAbility) {
    },
    // 当UIAbility从后台转到前台时触发回调
    onAbilityForeground(uiAbility) {
    },
    // 当UIAbility从前台转到后台时触发回调
    onAbilityBackground(uiAbility) {
    },
    // 当UIAbility迁移时被调用
    onAbilityContinue(uiAbility) {
    }
  };
  // 获取应用上下文
  let applicationContext = this.context.getApplicationContext();
  try {
    // 注册应用内生命周期回调
    this.lifecycleId = applicationContext.on('abilityLifecycle', abilityLifecycleCallback);
  } catch (err) {
  }
}