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← Component in Material 3 Compose

AlertDialog

Common
Android

Dialogs provide important prompts in a user flow. They can require an action, communicate information, or help users accomplish a task.

Basic dialog image

Last updated:

Installation

dependencies {
   implementation("androidx.compose.material3:material3:1.3.0-beta04")
}

Overloads

@Composable
fun AlertDialog(
    onDismissRequest: () -> Unit,
    confirmButton: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    dismissButton: @Composable (() -> Unit)? = null,
    icon: @Composable (() -> Unit)? = null,
    title: @Composable (() -> Unit)? = null,
    text: @Composable (() -> Unit)? = null,
    shape: Shape = AlertDialogDefaults.shape,
    containerColor: Color = AlertDialogDefaults.containerColor,
    iconContentColor: Color = AlertDialogDefaults.iconContentColor,
    titleContentColor: Color = AlertDialogDefaults.titleContentColor,
    textContentColor: Color = AlertDialogDefaults.textContentColor,
    tonalElevation: Dp = AlertDialogDefaults.TonalElevation,
    properties: DialogProperties = DialogProperties()
)

Parameters

namedescription
onDismissRequestcalled when the user tries to dismiss the Dialog by clicking outside or pressing the back button. This is not called when the dismiss button is clicked.
confirmButtonbutton which is meant to confirm a proposed action, thus resolving what triggered the dialog. The dialog does not set up any events for this button so they need to be set up by the caller.
modifierthe [Modifier] to be applied to this dialog
dismissButtonbutton which is meant to dismiss the dialog. The dialog does not set up any events for this button so they need to be set up by the caller.
iconoptional icon that will appear above the [title] or above the [text], in case a title was not provided.
titletitle which should specify the purpose of the dialog. The title is not mandatory, because there may be sufficient information inside the [text].
texttext which presents the details regarding the dialog's purpose.
shapedefines the shape of this dialog's container
containerColorthe color used for the background of this dialog. Use [Color.Transparent] to have no color.
iconContentColorthe content color used for the icon.
titleContentColorthe content color used for the title.
textContentColorthe content color used for the text.
tonalElevationwhen [containerColor] is [ColorScheme.surface], a translucent primary color overlay is applied on top of the container. A higher tonal elevation value will result in a darker color in light theme and lighter color in dark theme. See also: [Surface].
propertiestypically platform specific properties to further configure the dialog. @see BasicAlertDialog
@Composable
@ExperimentalMaterial3Api
@Deprecated(
    "Use BasicAlertDialog instead",
    replaceWith = ReplaceWith("BasicAlertDialog(onDismissRequest, modifier, properties, content)")

fun AlertDialog(
    onDismissRequest: () -> Unit,
    modifier: Modifier = Modifier,
    properties: DialogProperties = DialogProperties(),
    content: @Composable () -> Unit
)

Parameters

namedescription
onDismissRequestcalled when the user tries to dismiss the Dialog by clicking outside or pressing the back button. This is not called when the dismiss button is clicked.
modifierthe [Modifier] to be applied to this dialog's content.
propertiestypically platform specific properties to further configure the dialog.
contentthe content of the dialog
@Composable
fun AlertDialog(
    onDismissRequest: () -> Unit,
    confirmButton: @Composable () -> Unit,
    modifier: Modifier,
    dismissButton: @Composable (() -> Unit)?,
    icon: @Composable (() -> Unit)?,
    title: @Composable (() -> Unit)?,
    text: @Composable (() -> Unit)?,
    shape: Shape,
    containerColor: Color,
    iconContentColor: Color,
    titleContentColor: Color,
    textContentColor: Color,
    tonalElevation: Dp,
    properties: DialogProperties
)

@Composable
fun AlertDialog(
    onDismissRequest: () -> Unit,
    confirmButton: @Composable () -> Unit,
    modifier: Modifier,
    dismissButton: @Composable (() -> Unit)?,
    icon: @Composable (() -> Unit)?,
    title: @Composable (() -> Unit)?,
    text: @Composable (() -> Unit)?,
    shape: Shape,
    containerColor: Color,
    iconContentColor: Color,
    titleContentColor: Color,
    textContentColor: Color,
    tonalElevation: Dp,
    properties: DialogProperties
)

Code Examples

AlertDialogSample

@Composable
@Sampled
@Preview
fun AlertDialogSample() {
    val openDialog = remember { mutableStateOf(true) }

    if (openDialog.value) {
        AlertDialog(
            onDismissRequest = {
                // Dismiss the dialog when the user clicks outside the dialog or on the back
                // button. If you want to disable that functionality, simply use an empty
                // onDismissRequest.
                openDialog.value = false
            },
            title = { Text(text = "Title") },
            text = { Text(text = "Turned on by default") },
            confirmButton = {
                TextButton(onClick = { openDialog.value = false }) { Text("Confirm") }
            },
            dismissButton = {
                TextButton(onClick = { openDialog.value = false }) { Text("Dismiss") }
            }
        )
    }
}

AlertDialogWithIconSample

@Composable
@Sampled
@Preview
fun AlertDialogWithIconSample() {
    val openDialog = remember { mutableStateOf(true) }

    if (openDialog.value) {
        AlertDialog(
            onDismissRequest = {
                // Dismiss the dialog when the user clicks outside the dialog or on the back
                // button. If you want to disable that functionality, simply use an empty
                // onDismissRequest.
                openDialog.value = false
            },
            icon = { Icon(Icons.Filled.Favorite, contentDescription = null) },
            title = { Text(text = "Title") },
            text = {
                Text(
                    "This area typically contains the supportive text " +
                        "which presents the details regarding the Dialog's purpose."
                )
            },
            confirmButton = {
                TextButton(onClick = { openDialog.value = false }) { Text("Confirm") }
            },
            dismissButton = {
                TextButton(onClick = { openDialog.value = false }) { Text("Dismiss") }
            }
        )
    }
}

BasicAlertDialogSample

@Composable
@OptIn(ExperimentalMaterial3Api::class
@Sampled
@Preview
fun BasicAlertDialogSample() {
    val openDialog = remember { mutableStateOf(true) }

    if (openDialog.value) {
        BasicAlertDialog(
            onDismissRequest = {
                // Dismiss the dialog when the user clicks outside the dialog or on the back
                // button. If you want to disable that functionality, simply use an empty
                // onDismissRequest.
                openDialog.value = false
            }
        ) {
            Surface(
                modifier = Modifier.wrapContentWidth().wrapContentHeight(),
                shape = MaterialTheme.shapes.large,
                tonalElevation = AlertDialogDefaults.TonalElevation
            ) {
                Column(modifier = Modifier.padding(16.dp)) {
                    Text(
                        text =
                            "This area typically contains the supportive text " +
                                "which presents the details regarding the Dialog's purpose.",
                    )
                    Spacer(modifier = Modifier.height(24.dp))
                    TextButton(
                        onClick = { openDialog.value = false },
                        modifier = Modifier.align(Alignment.End)
                    ) {
                        Text("Confirm")
                    }
                }
            }
        }
    }
}