The [`Dialog`](https://developer.android.com/reference/kotlin/androidx/compose/ui/window/Dialog.composable.md.txt#Dialog(kotlin.Function0,androidx.compose.ui.window.DialogProperties,kotlin.Function0)) component displays pop-up messages or requests user input on a layer above the main app content. It creates an interruptive UI experience to capture user attention. Among the use cases for a dialog are the following: - Confirming user action, such as when deleting a file. - Requesting user input, such as in a to-do list app. - Presenting a list of options for user selection, like choosing a country in a profile setup. This topic provides the following implementations: - [Alert](https://developer.android.com/develop/ui/compose/quick-guides/content/display-user-input.md.txt#alert) - [Basic dialog](https://developer.android.com/develop/ui/compose/quick-guides/content/display-user-input.md.txt#basic) - [Advanced dialog](https://developer.android.com/develop/ui/compose/quick-guides/content/display-user-input.md.txt#advanced) ## Version compatibility This implementation requires that your project minSDK be set to API level 21 or higher. ### Dependencies ## Create an Alert dialog The [`AlertDialog`](https://developer.android.com/reference/kotlin/androidx/compose/material3/AlertDialog.composable.md.txt#AlertDialog(kotlin.Function0,kotlin.Function0,androidx.compose.ui.Modifier,kotlin.Function0,kotlin.Function0,kotlin.Function0,kotlin.Function0,androidx.compose.ui.graphics.Shape,androidx.compose.ui.graphics.Color,androidx.compose.ui.graphics.Color,androidx.compose.ui.graphics.Color,androidx.compose.ui.graphics.Color,androidx.compose.ui.unit.Dp,androidx.compose.ui.window.DialogProperties)) composable provides a convenient API for creating a Material Design themed dialog. The following example implements two buttons in an alert dialog, one that dismisses the dialog, and another that confirms its request: This implementation implies a parent composable that passes arguments to the child composable in this way: ### Results  **Figure 1.** An alert dialog with buttons. ### Key points `AlertDialog` has specific parameters for handling particular elements of the dialog. Among them are the following: - `title`: The text that appears along the top of the dialog. - `text`: The text that appears centered within the dialog. - `icon`: The graphic that appears at the top of the dialog. - `onDismissRequest`: The function called when the user dismisses the dialog, such as by tapping outside of it. - `dismissButton`: A composable that serves as the dismiss button. - `confirmButton`: A composable that serves as the confirm button. - When the user clicks either of the buttons, the dialog closes. When the user clicks confirm, it calls a function that also handles the confirmation. In this example, those functions are `onDismissRequest()` and `onConfirmRequest()`. In cases where your dialog requires a more complex set of buttons, you may benefit from using the `Dialog` composable and populating it in a more freeform manner. ## Create a dialog [`Dialog`](https://developer.android.com/reference/kotlin/androidx/compose/ui/window/Dialog.composable.md.txt#Dialog(kotlin.Function0,androidx.compose.ui.window.DialogProperties,kotlin.Function0)) is a basic composable that doesn't provide any styling or predefined slots for content. It is a straightforward container that you should populate with a container such as `Card`. The following are some of the key parameters of a dialog: - **`onDismissRequest`**: The lambda called when the user closes the dialog. - **`properties`** : An instance of [`DialogProperties`](https://developer.android.com/reference/kotlin/androidx/compose/ui/window/DialogProperties.md.txt) that provides some additional scope for customization. > [!CAUTION] > **Caution:** You must manually specify the size and shape of `Dialog`. You also must provide an inner container. ### Create a basic dialog The following example is a basic implementation of the `Dialog` composable. Note that it uses a `Card` as the secondary container. Without the `Card`, the `Text` component would appear alone above the main app content. ### Result Note that when the dialog is open, the main app content beneath it appears darkened and grayed out:  **Figure 2.** Minimal dialog. ### Create an advanced dialog The following is a more advanced implemented of the `Dialog` composable. In this case, the component manually implements a similar interface to the preceding `AlertDialog` example. > [!CAUTION] > **Caution:** If you only need to display a two-button dialog as in this example, you should use `AlertDialog` and its more convenient API. However, if you want to create a more complex dialog, perhaps with forms and multiple buttons, you should use `Dialog` with custom content, as in the following example. ### Result  **Figure 3.** A dialog that includes an image. ## Collections that contain this guide This guide is part of these curated Quick Guide collections that cover broader Android development goals:   ### Display text Text is a central piece of any UI. Find out different ways you can present text in your app to provide a delightful user experience. [Quick guide collection](https://developer.android.com/develop/ui/compose/quick-guides/collections/display-text)   ### Request user input Learn how to implement ways for users to interact with your app by entering text and using other means of input. [Quick guide collection](https://developer.android.com/develop/ui/compose/quick-guides/collections/request-user-input)   ### Display interactive components Learn how composable functions can enable you to easily create beautiful UI components based on the Material Design design system. [Quick guide collection](https://developer.android.com/develop/ui/compose/quick-guides/collections/display-interactive-components)  ## Have questions or feedback Go to our frequently asked questions page and learn about quick guides or reach out and let us know your thoughts. [Go to FAQ](https://developer.android.com/quick-guides/faq.md.txt) [Leave feedback](https://issuetracker.google.com/issues/new?component=1573691&template=1993320)