#鸿蒙通关秘籍#启动Ability的异步回调，有啥需要注意的？

启动Ability的异步回调，你需要注意回调的时机和方式，确保在正确的时间点接收到回调结果。

export default class EntryAbility extends UIAbility {
    onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void {
        this.context.getApplicationContext().setColorMode(ConfigurationConstant.ColorMode.COLOR_MODE_NOT_SET);
        hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onCreate');
    }

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

    onWindowStageCreate(windowStage: window.WindowStage): void {
        // Main window is created, set main page for this ability
        hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onWindowStageCreate');

        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.');
        });
    }

    onWindowStageDestroy(): void {
        // Main window is destroyed, release UI related resources
        hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onWindowStageDestroy');
    }

    onForeground(): void {
        // Ability has brought to foreground
        hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onForeground');
    }

    onBackground(): void {
        // Ability has back to background
        hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onBackground');
    }
}