[Home](./index.md) > [@firebase/auth](./auth.md) > [ActionCodeSettings](./auth.actioncodesettings.md) ## ActionCodeSettings interface An interface that defines the required continue/state URL with optional Android and iOS bundle identifiers. Signature: ```typescript export interface ActionCodeSettings ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [android?](./auth.actioncodesettings.android.md) | { installApp?: boolean; minimumVersion?: string; packageName: string; } | (Optional) Sets the Android package name. | | [dynamicLinkDomain?](./auth.actioncodesettings.dynamiclinkdomain.md) | string | (Optional) When multiple custom dynamic link domains are defined for a project, specify which one to use when the link is to be opened via a specified mobile app (for example, example.page.link). | | [handleCodeInApp?](./auth.actioncodesettings.handlecodeinapp.md) | boolean | (Optional) When set to true, the action code link will be be sent as a Universal Link or Android App Link and will be opened by the app if installed. | | [iOS?](./auth.actioncodesettings.ios.md) | { bundleId: string; } | (Optional) Sets the iOS bundle ID. | | [url](./auth.actioncodesettings.url.md) | string | Sets the link continue/state URL. |