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Version: v6

ion-toast

shadow

Contents

A Toast is a subtle notification commonly used in modern applications. It can be used to provide feedback about an operation or to display a system message. The toast appears on top of the app's content, and can be dismissed by the app to resume user interaction with the app.

Positioning

Toasts can be positioned at the top, bottom or middle of the viewport. The position can be passed upon creation. The possible values are top, bottom and middle. If the position is not specified, the toast will be displayed at the bottom of the viewport.

Dismissing

The toast can be dismissed automatically after a specific amount of time by passing the number of milliseconds to display it in the duration of the toast options. If a button with a role of "cancel" is added, then that button will dismiss the toast. To dismiss the toast after creation, call the dismiss() method on the instance.

Icons

An icon can be added next to the content inside of the toast. In general, icons in toasts should be used to add additional style or context, not to grab the user's attention or elevate the priority of the toast. If you wish to convey a higher priority message to the user or guarantee a response, we recommend using an Alert instead.

Interfaces

ToastButton

interface ToastButton {
text?: string;
icon?: string;
side?: 'start' | 'end';
role?: 'cancel' | string;
cssClass?: string | string[];
handler?: () => boolean | void | Promise<boolean | void>;
}

ToastOptions

interface ToastOptions {
header?: string;
message?: string | IonicSafeString;
cssClass?: string | string[];
duration?: number;
buttons?: (ToastButton | string)[];
position?: 'top' | 'bottom' | 'middle';
translucent?: boolean;
animated?: boolean;
icon?: string;
htmlAttributes?: { [key: string]: any };

color?: Color;
mode?: Mode;
keyboardClose?: boolean;
id?: string;

enterAnimation?: AnimationBuilder;
leaveAnimation?: AnimationBuilder;
}

Accessibility

Focus Management

Toasts are intended to be subtle notifications and are not intended to interrupt the user. User interaction should not be required to dismiss the toast. As a result, focus is not automatically moved to a toast when one is presented.

Screen Readers

ion-toast has aria-live="polite" and aria-atomic="true" set by default.

aria-live causes screen readers to announce the content of the toast when it is presented. However, since the attribute is set to 'polite', screen readers generally do not interrupt the current task. Developers can customize this behavior by using the htmlAttributes property to set aria-live to 'assertive'. This will cause screen readers to immediately notify the user when a toast is presented, potentially interrupting any previous updates.

aria-atomic="true" is set to ensure that the entire toast is announced as a single unit. This is useful when dynamically updating the content of the toast as it prevents screen readers from announcing only the content that has changed.

Tips

While this is not a complete list, here are some guidelines to follow when using toasts.

  • Do not require user interaction to dismiss toasts. For example, having a "Dismiss" button in the toast is fine, but the toast should also automatically dismiss on its own after a timeout period. If you need user interaction for a notification, consider using ion-alert instead.

  • Avoid opening multiple toasts in quick succession. If aria-live is set to 'assertive', screen readers may interrupt the reading of the current task to announce the new toast, causing the context of the previous toast to be lost.

  • For toasts with long messages, consider adjusting the duration property to allow users enough time to read the content of the toast.

Usage

import { Component } from '@angular/core';
import { ToastController } from '@ionic/angular';

@Component({
selector: 'toast-example',
templateUrl: 'toast-example.html',
styleUrls: ['./toast-example.css'],
})
export class ToastExample {

constructor(public toastController: ToastController) {}

async presentToast() {
const toast = await this.toastController.create({
message: 'Your settings have been saved.',
duration: 2000
});
toast.present();
}

async presentToastWithOptions() {
const toast = await this.toastController.create({
header: 'Toast header',
message: 'Click to Close',
icon: 'information-circle',
position: 'top',
buttons: [
{
side: 'start',
icon: 'star',
text: 'Favorite',
handler: () => {
console.log('Favorite clicked');
}
}, {
text: 'Done',
role: 'cancel',
handler: () => {
console.log('Cancel clicked');
}
}
]
});
await toast.present();

const { role } = await toast.onDidDismiss();
console.log('onDidDismiss resolved with role', role);
}

}

Properties

animated

DescriptionIf true, the toast will animate.
Attributeanimated
Typeboolean
Defaulttrue

buttons

DescriptionAn array of buttons for the toast.
Attributeundefined
Type(string | ToastButton)[] | undefined
Defaultundefined

color

DescriptionThe color to use from your application's color palette. Default options are: "primary", "secondary", "tertiary", "success", "warning", "danger", "light", "medium", and "dark". For more information on colors, see theming.
Attributecolor
Typestring | undefined
Defaultundefined

cssClass

DescriptionAdditional classes to apply for custom CSS. If multiple classes are provided they should be separated by spaces.
Attributecss-class
Typestring | string[] | undefined
Defaultundefined

duration

DescriptionHow many milliseconds to wait before hiding the toast. By default, it will show until dismiss() is called.
Attributeduration
Typenumber
Default0

enterAnimation

DescriptionAnimation to use when the toast is presented.
Attributeundefined
Type((baseEl: any, opts?: any) => Animation) | undefined
Defaultundefined
DescriptionHeader to be shown in the toast.
Attributeheader
Typestring | undefined
Defaultundefined

htmlAttributes

DescriptionAdditional attributes to pass to the toast.
Attributeundefined
TypeToastAttributes | undefined
Defaultundefined

icon

DescriptionThe name of the icon to display, or the path to a valid SVG file. See ion-icon. https://ionic.io/ionicons
Attributeicon
Typestring | undefined
Defaultundefined

keyboardClose

DescriptionIf true, the keyboard will be automatically dismissed when the overlay is presented.
Attributekeyboard-close
Typeboolean
Defaultfalse

leaveAnimation

DescriptionAnimation to use when the toast is dismissed.
Attributeundefined
Type((baseEl: any, opts?: any) => Animation) | undefined
Defaultundefined

message

DescriptionMessage to be shown in the toast.
Attributemessage
TypeIonicSafeString | string | undefined
Defaultundefined

mode

DescriptionThe mode determines which platform styles to use.
Attributemode
Type"ios" | "md"
Defaultundefined

position

DescriptionThe position of the toast on the screen.
Attributeposition
Type"bottom" | "middle" | "top"
Default'bottom'

translucent

DescriptionIf true, the toast will be translucent. Only applies when the mode is "ios" and the device supports backdrop-filter.
Attributetranslucent
Typeboolean
Defaultfalse

Events

NameDescription
ionToastDidDismissEmitted after the toast has dismissed.
ionToastDidPresentEmitted after the toast has presented.
ionToastWillDismissEmitted before the toast has dismissed.
ionToastWillPresentEmitted before the toast has presented.

Methods

dismiss

DescriptionDismiss the toast overlay after it has been presented.
Signaturedismiss(data?: any, role?: string | undefined) => Promise<boolean>

onDidDismiss

DescriptionReturns a promise that resolves when the toast did dismiss.
SignatureonDidDismiss<T = any>() => Promise<OverlayEventDetail<T>>

onWillDismiss

DescriptionReturns a promise that resolves when the toast will dismiss.
SignatureonWillDismiss<T = any>() => Promise<OverlayEventDetail<T>>

present

DescriptionPresent the toast overlay after it has been created.
Signaturepresent() => Promise<void>

CSS Shadow Parts

NameDescription
buttonAny button element that is displayed inside of the toast.
containerThe element that wraps all child elements.
headerThe header text of the toast.
iconThe icon that appears next to the toast content.
messageThe body text of the toast.

CSS Custom Properties

NameDescription
--backgroundBackground of the toast
--border-colorBorder color of the toast
--border-radiusBorder radius of the toast
--border-styleBorder style of the toast
--border-widthBorder width of the toast
--box-shadowBox shadow of the toast
--button-colorColor of the button text
--colorColor of the toast text
--endPosition from the right if direction is left-to-right, and from the left if direction is right-to-left
--heightHeight of the toast
--max-heightMaximum height of the toast
--max-widthMaximum width of the toast
--min-heightMinimum height of the toast
--min-widthMinimum width of the toast
--startPosition from the left if direction is left-to-right, and from the right if direction is right-to-left
--white-spaceWhite space of the toast message
--widthWidth of the toast
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