1# LifecycleApp Switching 2 3 4| API in the FA Model| Corresponding d.ts File in the Stage Model| Corresponding API in the Stage Model| 5| -------- | -------- | -------- | 6| onShow?(): void; | \@ohos.window.d.ts | [on(eventType: 'windowStageEvent', callback: Callback<WindowStageEventType>): void;](../reference/apis/js-apis-window.md#onwindowstageevent9)<br>Listens for the switching to the [foreground](../reference/apis/js-apis-window.md#windowstageeventtype9).| 7| onHide?(): void; | \@ohos.window.d.ts | [on(eventType: 'windowStageEvent', callback: Callback<WindowStageEventType>): void;](../reference/apis/js-apis-window.md#onwindowstageevent9)<br>Listens for the switching to the [background](../reference/apis/js-apis-window.md#windowstageeventtype9).| 8| onDestroy?(): void; | \@ohos.app.ability.UIAbility.d.ts | [onDestroy(): void;](../reference/apis/js-apis-app-ability-uiAbility.md#abilityondestroy) | 9| onCreate?(): void; | \@ohos.app.ability.UIAbility.d.ts | [onCreate(want: Want, param: AbilityConstant.LaunchParam): void;](../reference/apis/js-apis-app-ability-uiAbility.md#abilityoncreate) | 10| onWindowDisplayModeChanged?(isShownInMultiWindow: boolean, newConfig: resourceManager.Configuration): void; | There is no corresponding API in the stage model.| No corresponding API is provided.| 11| onStartContinuation?(): boolean; | There is no corresponding API in the stage model.| In the stage model, an application does not need to detect whether the continuation is successful (detected when the application initiates the continuation request). Therefore, the **onStartContinuation()** callback is deprecated.| 12| onSaveData?(data: Object): boolean; | \@ohos.app.ability.UIAbility.d.ts | [onContinue(wantParam : {[key: string]: any}): AbilityConstant.OnContinueResult;](../reference/apis/js-apis-app-ability-uiAbility.md#abilityoncontinue) | 13| onCompleteContinuation?(result: number): void; | application\ContinueCallback.d.ts | [onContinueDone(result: number): void;](../reference/apis/js-apis-distributedMissionManager.md#continuecallback) | 14| onRestoreData?(data: Object): void; | \@ohos.app.ability.UIAbility.d.ts | [onCreate(want: Want, param: AbilityConstant.LaunchParam): void;](../reference/apis/js-apis-app-ability-uiAbility.md#abilityoncreate)<br>[onNewWant(want: Want, launchParams: AbilityConstant.LaunchParam): void;](../reference/apis/js-apis-app-ability-uiAbility.md#abilityonnewwant)<br>In multiton or singleton mode, the target ability completes data restoration in the **onCreate()** callback. In the callback, **launchParam.launchReason** is used to determine whether it is a continuation-based launch scenario. If it is, the data saved before continuation can be obtained from the **want** parameter.| 15| onRemoteTerminated?(): void; | application\ContinueCallback.d.ts | [onContinueDone(result: number): void;](../reference/apis/js-apis-distributedMissionManager.md#continuecallback) | 16| onSaveAbilityState?(outState: PacMap): void; | \@ohos.app.ability.UIAbility.d.ts | [onSaveState(reason: AbilityConstant.StateType, wantParam : {[key: string]: any}): AbilityConstant.OnSaveResult;](../reference/apis/js-apis-app-ability-uiAbility.md#abilityonsavestate) | 17| onRestoreAbilityState?(inState: PacMap): void; | \@ohos.app.ability.UIAbility.d.ts | [onCreate(want: Want, param: AbilityConstant.LaunchParam): void;](../reference/apis/js-apis-app-ability-uiAbility.md#abilityoncreate)<br>After the application is restarted, the **onCreate()** callback is triggered. In the callback, **launchParam.launchReason** is used to determine whether it is a self-recovery scenario. If it is, the data saved before the restart can be obtained from the **want** parameter.| 18| onInactive?(): void; | \@ohos.app.ability.UIAbility.d.ts | [onBackground(): void;](../reference/apis/js-apis-app-ability-uiAbility.md#abilityonbackground) | 19| onActive?(): void; | \@ohos.app.ability.UIAbility.d.ts | [onForeground(): void;](../reference/apis/js-apis-app-ability-uiAbility.md#abilityonforeground) | 20| onNewWant?(want: Want): void; | \@ohos.app.ability.UIAbility.d.ts | [onNewWant(want: Want, launchParams: AbilityConstant.LaunchParam): void;](../reference/apis/js-apis-app-ability-uiAbility.md#abilityonnewwant) | 21| onMemoryLevel?(level: number): void | \@ohos.app.ability.UIAbility.d.ts | [onMemoryLevel(level: AbilityConstant.MemoryLevel): void;](../reference/apis/js-apis-app-ability-ability.md#abilityonmemorylevel) | 22