# LifecycleForm接口切换 | FA模型接口 | Stage模型接口对应d.ts文件 | Stage模型对应接口 | | -------- | -------- | -------- | | onCreate?(want: Want): formBindingData.FormBindingData; | \@ohos.app.form.FormExtensionAbility.d.ts | [onAddForm(want: Want): formBindingData.FormBindingData;](../reference/apis/js-apis-app-form-formextensionability.md#onaddform) | | onCastToNormal?(formId: string): void; | \@ohos.app.form.FormExtensionAbility.d.ts | [onCastToNormalForm(formId: string): void;](../reference/apis/js-apis-app-form-formextensionability.md#oncasttonormalform) | | onUpdate?(formId: string): void; | \@ohos.app.form.FormExtensionAbility.d.ts | [onUpdateForm(formId: string): void;](../reference/apis/js-apis-app-form-formextensionability.md#onupdateform) | | onVisibilityChange?(newStatus: { [key: string]: number }): void; | \@ohos.app.form.FormExtensionAbility.d.ts | [onChangeFormVisibility(newStatus: { [key: string]: number }): void;](../reference/apis/js-apis-app-form-formextensionability.md#onchangeformvisibility) | | onEvent?(formId: string, message: string): void; | \@ohos.app.form.FormExtensionAbility.d.ts | [onFormEvent(formId: string, message: string): void;](../reference/apis/js-apis-app-form-formextensionability.md#onformevent) | | onDestroy?(formId: string): void; | \@ohos.app.form.FormExtensionAbility.d.ts | [onRemoveForm(formId: string): void;](../reference/apis/js-apis-app-form-formextensionability.md#onremoveform) | | onAcquireFormState?(want: Want): formInfo.FormState; | \@ohos.app.form.FormExtensionAbility.d.ts | [onAcquireFormState?(want: Want): formInfo.FormState;](../reference/apis/js-apis-app-form-formextensionability.md#onacquireformstate) | | onShare?(formId: string): {[key: string]: any}; | \@ohos.app.form.FormExtensionAbility.d.ts | [onShareForm?(formId: string): { [key: string]: any };](../reference/apis/js-apis-app-form-formextensionability.md#onshareform) |
