声明周期路径：
enty > src > main > ets > entryability > EntryAbility.ets

代码示例

import { AbilityConstant, UIAbility, Want } from '@kit.AbilityKit';
import { hilog } from '@kit.PerformanceAnalysisKit';
import { window } from '@kit.ArkUI';

export default class EntryAbility extends UIAbility {
  // 应用初始化
  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void {
    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onCreate');
  }

  // 设置 UI 页面加载
  onWindowStageCreate(windowStage: window.WindowStage): void {
    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onWindowStageCreate');

    // 设置应用需要加载的页面
    windowStage.loadContent('pages/Index', (err) => {
      if (err.code) {
        hilog.error(0x0000, 'testTag', 'Failed to load the content. Cause: %{public}s', JSON.stringify(err) ?? '');
        return;
      }
      hilog.info(0x0000, 'testTag', 'Succeeded in loading the content.');
    });
  }

  // 释放 UI 页面资源
  onWindowStageDestroy(): void {
    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onWindowStageDestroy');
  }

  // 切换至前台
  onForeground(): void {
    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onForeground');
  }

  // 切换至后台
  onBackground(): void {
    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onBackground');
  }

  // 销毁实例
  onDestroy(): void {
    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onDestroy');
  }

}

图例

image.png