KeyboardButton class

This object represents one button of the reply keyboard. For simple text buttons String can be used instead of this object to specify text of the button. Optional fields web_app, request_contact, request_location, and request_poll are mutually exclusive.

Constructors

KeyboardButton({required String text, bool? requestContact, bool? requestLocation, KeyboardButtonPollType? requestPoll, WebAppInfo? webApp, KeyboardButtonRequestUsers? requestUsers, KeyboardButtonRequestChat? requestChat})

Creates a new KeyboardButton with the specified text.

const

KeyboardButton.fromJson(Map<String, dynamic> json)

Creates a new KeyboardButton from a JSON object.

factory

Properties

hashCode → int

The hash code for this object.

no setter, inherited

requestChat → KeyboardButtonRequestChat?

Optional. If specified, pressing the button will open a list of suitable chats. Tapping on a chat will send its identifier to the bot in a “chat_shared” service message. Available in private chats only.

final

requestContact → bool?

Optional. If True, the user's phone number will be sent as a contact when the button is pressed. Available in private chats only

final

requestLocation → bool?

Optional. If True, the user's current location will be sent when the button is pressed. Available in private chats only.

final

requestPoll → KeyboardButtonPollType?

Optional. If specified, the user will be asked to create a poll and send it to the bot when the button is pressed. Available in private chats only.

final

requestUsers → KeyboardButtonRequestUsers?

Optional. If specified, pressing the button will open a list of suitable users. Tapping on any user will send their identifier to the bot in a “user_shared” service message. Available in private chats only.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

text → String

Text of the button. If none of the optional fields are used, it will be sent as a message when the button is pressed

final

webApp → WebAppInfo?

Optional. If specified, the described Web App will be launched when the button is pressed. The Web App will be able to send a “web_app_data” service message. Available in private chats only.

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → Map<String, dynamic>

Generates a JSON object from this object.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited