[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["没有我需要的信息","missingTheInformationINeed","thumb-down"],["太复杂/步骤太多","tooComplicatedTooManySteps","thumb-down"],["内容需要更新","outOfDate","thumb-down"],["翻译问题","translationIssue","thumb-down"],["示例/代码问题","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC):2025-02-06。"],[],[],null,["\u003cbr /\u003e\n\nThe [`Dialog`](/reference/kotlin/androidx/compose/ui/window/package-summary#Dialog(kotlin.Function0,androidx.compose.ui.window.DialogProperties,kotlin.Function0)) component displays pop-up messages or requests user input on a\nlayer above the main app content. It creates an interruptive UI experience to\ncapture user attention.\n\nAmong the use cases for a dialog are the following:\n\n- Confirming user action, such as when deleting a file.\n- Requesting user input, such as in a to-do list app.\n- Presenting a list of options for user selection, like choosing a country in a profile setup.\n\nThis topic provides the following implementations:\n\n- [Alert](#alert)\n- [Basic dialog](#basic)\n- [Advanced dialog](#advanced)\n\nVersion compatibility\n\nThis implementation requires that your project minSDK be set to API level 21 or\nhigher.\n\nDependencies\n\nCreate an Alert dialog\n\nThe [`AlertDialog`](/reference/kotlin/androidx/compose/material3/package-summary#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\nMaterial Design themed dialog. The following example implements two buttons in\nan alert dialog, one that dismisses the dialog, and another that confirms its\nrequest:\n\nThis implementation implies a parent composable that passes arguments to the\nchild composable in this way:\n\nResults **Figure 1.** An alert dialog with buttons.\n\nKey points\n\n`AlertDialog` has specific parameters for handling particular elements of the\ndialog. Among them are the following:\n\n- `title`: The text that appears along the top of the dialog.\n- `text`: The text that appears centered within the dialog.\n- `icon`: The graphic that appears at the top of the dialog.\n- `onDismissRequest`: The function called when the user dismisses the dialog, such as by tapping outside of it.\n- `dismissButton`: A composable that serves as the dismiss button.\n- `confirmButton`: A composable that serves as the confirm button.\n\n- When the user clicks either of the buttons, the dialog closes. When the user\n clicks confirm, it calls a function that also handles the confirmation. In\n this example, those functions are `onDismissRequest()` and\n `onConfirmRequest()`.\n\n In cases where your dialog requires a more complex set of buttons, you may\n benefit from using the `Dialog` composable and populating it in a more\n freeform manner.\n\nCreate a dialog\n\n[`Dialog`](/reference/kotlin/androidx/compose/ui/window/package-summary#Dialog(kotlin.Function0,androidx.compose.ui.window.DialogProperties,kotlin.Function0)) is a basic composable that doesn't provide any styling or\npredefined slots for content. It is a straightforward container that you should\npopulate with a container such as `Card`. The following are some of the key\nparameters of a dialog:\n\n- **`onDismissRequest`**: The lambda called when the user closes the dialog.\n- **`properties`** : An instance of [`DialogProperties`](/reference/kotlin/androidx/compose/ui/window/DialogProperties) that provides some additional scope for customization.\n\n| **Caution:** You must manually specify the size and shape of `Dialog`. You also must provide an inner container.\n\nCreate a basic dialog\n\nThe following example is a basic implementation of the `Dialog` composable. Note\nthat it uses a `Card` as the secondary container. Without the `Card`, the `Text`\ncomponent would appear alone above the main app content.\n\nResult\n\nNote that when the dialog is open, the main app content beneath it appears\ndarkened and grayed out:\n**Figure 2.** Minimal dialog.\n\nCreate an advanced dialog\n\nThe following is a more advanced implemented of the `Dialog` composable. In this\ncase, the component manually implements a similar interface to the preceding\n`AlertDialog` example.\n| **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.\n\nResult **Figure 3.** A dialog that includes an image.\n\nCollections that contain this guide\n\nThis guide is part of these curated Quick Guide collections that cover\nbroader Android development goals: \n\nDisplay text \nText is a central piece of any UI. Find out different ways you can present text in your app to provide a delightful user experience. \n[Quick guide collection](/develop/ui/compose/quick-guides/collections/display-text) \n\nRequest user input \nLearn how to implement ways for users to interact with your app by entering text and using other means of input. \n[Quick guide collection](/develop/ui/compose/quick-guides/collections/request-user-input) \n\nDisplay interactive components \nLearn how composable functions can enable you to easily create beautiful UI components based on the Material Design design system. \n[Quick guide collection](/develop/ui/compose/quick-guides/collections/display-interactive-components) \n\nHave questions or feedback \nGo to our frequently asked questions page and learn about quick guides or reach out and let us know your thoughts. \n[Go to FAQ](/quick-guides/faq) [Leave feedback](https://issuetracker.google.com/issues/new?component=1573691&template=1993320)"]]