39 lines
1.2 KiB
TypeScript
39 lines
1.2 KiB
TypeScript
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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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*/
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import {NativeEventSubscription} from '../EventEmitter/RCTNativeAppEventEmitter';
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export type BackPressEventName = 'hardwareBackPress';
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/**
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* Detect hardware back button presses, and programmatically invoke the
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* default back button functionality to exit the app if there are no
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* listeners or if none of the listeners return true.
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* The event subscriptions are called in reverse order
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* (i.e. last registered subscription first), and if one subscription
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* returns true then subscriptions registered earlier
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* will not be called.
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*
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* @see https://reactnative.dev/docs/backhandler
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*/
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export interface BackHandlerStatic {
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exitApp(): void;
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addEventListener(
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eventName: BackPressEventName,
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handler: () => boolean | null | undefined,
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): NativeEventSubscription;
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removeEventListener(
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eventName: BackPressEventName,
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handler: () => boolean | null | undefined,
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): void;
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}
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export const BackHandler: BackHandlerStatic;
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export type BackHandler = BackHandlerStatic;
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