#鸿蒙通关秘籍#在AbilityStage中响应系统环境变量变化

在AbilityStage中响应系统环境变量的变化，可以使用AbilityStage.onConfigurationUpdate()回调方法。当配置发生变化时，系统调用该回调方法，调用方可以通过Configuration对象获取最新的配置信息，以此来适应变化并进行界面适配。

bash import { AbilityStage, Configuration } from '@kit.AbilityKit'; import { hilog } from '@kit.PerformanceAnalysisKit';

const TAG: string = '[MyAbilityStage]'; const DOMAIN_NUMBER: number = 0xFF00;

let systemLanguage: string | undefined;

export default class MyAbilityStage extends AbilityStage { onCreate(): void { systemLanguage = this.context.config.language; hilog.info(DOMAIN_NUMBER, TAG, systemLanguage is ${systemLanguage}); }

onConfigurationUpdate(newConfig: Configuration): void { hilog.info(DOMAIN_NUMBER, TAG, onConfigurationUpdate, language: ${newConfig.language}); if (systemLanguage !== newConfig.language) { hilog.info(DOMAIN_NUMBER, TAG, systemLanguage from ${systemLanguage} changed to ${newConfig.language}); systemLanguage = newConfig.language; } } }