Skip to content

Latest commit

 

History

History
1793 lines (1232 loc) · 55.9 KB

Reference.md

File metadata and controls

1793 lines (1232 loc) · 55.9 KB
Raw

React Native WebView API Reference

This document lays out the current public properties and methods for the React Native WebView.

Props Index

Methods Index

Reference

Props

source⬆

Loads static HTML or a URI (with optional headers) in the WebView. Note that static HTML will require setting originWhitelist to ["*"].

The object passed to source can have either of the following shapes:

Load uri

  • uri (string) - The URI to load in the WebView. Can be a local or remote file, and can be changed with React state or props to navigate to a new page.
  • method (string) - The HTTP Method to use. Defaults to GET if not specified. On Android and Windows, the only supported methods are GET and POST.
  • headers (object) - Additional HTTP headers to send with the request. On Android, this can only be used with GET requests. See the Guide for more information on setting custom headers.
  • body (string) - The HTTP body to send with the request. This must be a valid UTF-8 string, and will be sent exactly as specified, with no additional encoding (e.g. URL-escaping or base64) applied. On Android and Windows, this can only be used with POST requests.

Static HTML

Note that using static HTML requires the WebView property originWhiteList to ['*']. For some content, such as video embeds (e.g. Twitter or Facebook posts with video), the baseUrl needs to be set for the video playback to work

  • html (string) - A static HTML page to display in the WebView.
  • baseUrl (string) - The base URL to be used for any relative links in the HTML. This is also used for the origin header with CORS requests made from the WebView. See Android WebView Docs
Type Required
object No

automaticallyAdjustContentInsets⬆

Controls whether to adjust the content inset for web views that are placed behind a navigation bar, tab bar, or toolbar. The default value is true.

Type Required Platform
bool No iOS

automaticallyAdjustsScrollIndicatorInsets⬆

Controls whether to adjust the scroll indicator inset for web views that are placed behind a navigation bar, tab bar, or toolbar. The default value false. (iOS 13+)

Type Required Platform
bool No iOS(13+)

injectedJavaScript⬆

Set this to provide JavaScript that will be injected into the web page after the document finishes loading, but before other subresources finish loading.

Make sure the string evaluates to a valid type (true works) and doesn't otherwise throw an exception.

On iOS, see WKUserScriptInjectionTimeAtDocumentEnd. Be sure to set an onMessage handler, even if it's a no-op, or the code will not be run.

Type Required Platform
string No iOS, Android, macOS, Windows

To learn more, read the Communicating between JS and Native guide.

Kindly note: Windows does not have native support for alerts, as such any scripts to show an alert will not work.

Example:

Post message a JSON object of window.location to be handled by onMessage

const INJECTED_JAVASCRIPT = `(function() {
    window.ReactNativeWebView.postMessage(JSON.stringify(window.location));
})();`;

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  injectedJavaScript={INJECTED_JAVASCRIPT}
  onMessage={this.onMessage}
/>;

injectedJavaScriptBeforeContentLoaded⬆

Set this to provide JavaScript that will be injected into the web page after the document element is created, but before other subresources finish loading.

Make sure the string evaluates to a valid type (true works) and doesn't otherwise throw an exception.

On iOS, see WKUserScriptInjectionTimeAtDocumentStart

Warning On Android, this may work, but it is not 100% reliable (see #1609 and #1099). Consider injectedJavaScriptObject instead.

Type Required Platform
string No iOS, macOS, Android (experimental)

To learn more, read the Communicating between JS and Native guide.

Example:

Post message a JSON object of window.location to be handled by onMessage. window.ReactNativeWebView.postMessage will be available at this time.

const INJECTED_JAVASCRIPT = `(function() {
    window.ReactNativeWebView.postMessage(JSON.stringify(window.location));
})();`;

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  injectedJavaScriptBeforeContentLoaded={INJECTED_JAVASCRIPT}
  onMessage={this.onMessage}
/>;

injectedJavaScriptForMainFrameOnly⬆

If true (default; mandatory for Android), loads the injectedJavaScript only into the main frame.

If false, (only supported on iOS and macOS), loads it into all frames (e.g. iframes).

Type Required Platform
bool No iOS and macOS (only true supported for Android)

injectedJavaScriptBeforeContentLoadedForMainFrameOnly⬆

If true (default; mandatory for Android), loads the injectedJavaScriptBeforeContentLoaded only into the main frame.

If false, (only supported on iOS and macOS), loads it into all frames (e.g. iframes).

Type Required Platform
bool No iOS and macOS (only true supported for Android)

injectedJavaScriptObject⬆

Inject any JavaScript object into the webview so it is available to the JS running on the page.

Type Required Platform
obj No Android only

Example:

Set a value to be used in JavaScript.

Note: Any value in the object will be accessible to all frames of the webpage. If sensitive values are present please ensure that you have a strict Content Security Policy set up to avoid data leaking.

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  injectedJavaScriptObject={{ customValue: 'myCustomValue' }}
/>;
<html>
  <head>
    <script>
      window.onload = (event) => {
        if (window.ReactNativeWebView.injectedObjectJson()) {
            const customValue = JSON.parse(window.ReactNativeWebView.injectedObjectJson()).customValue;
            ...
        }
      }
    </script>
  </head>
</html>

mediaPlaybackRequiresUserAction⬆

Boolean that determines whether HTML5 audio and video requires the user to tap them before they start playing. The default value is true. (Android API minimum version 17).

NOTE: the default true value might cause some videos to hang loading on iOS. Setting it to false could fix this issue.

Type Required Platform
bool No iOS, Android, macOS

nativeConfig⬆

Override the native component used to render the WebView. Enables a custom native WebView which uses the same JavaScript as the original WebView.

The nativeConfig prop expects an object with the following keys:

  • component (any)
  • props (object)
  • viewManager (object)
Type Required Platform
object No iOS, Android, macOS

onError⬆

Function that is invoked when the WebView load fails.

Type Required
function No

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  onError={(syntheticEvent) => {
    const { nativeEvent } = syntheticEvent;
    console.warn('WebView error: ', nativeEvent);
  }}
/>

Function passed to onError is called with a SyntheticEvent wrapping a nativeEvent with these properties:

canGoBack
canGoForward
code
description
didFailProvisionalNavigation
domain
loading
target
title
url

Note Domain is only used on iOS

The syntheticEvent can be stopped doing its default action by calling syntheticEvent.preventDefault().

onLoad⬆

Function that is invoked when the WebView has finished loading.

Type Required
function No

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  onLoad={(syntheticEvent) => {
    const { nativeEvent } = syntheticEvent;
    this.url = nativeEvent.url;
  }}
/>

Function passed to onLoad is called with a SyntheticEvent wrapping a nativeEvent with these properties:

canGoBack
canGoForward
loading
target
title
url

onLoadEnd⬆

Function that is invoked when the WebView load succeeds or fails.

Type Required
function No

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  onLoadEnd={(syntheticEvent) => {
    // update component to be aware of loading status
    const { nativeEvent } = syntheticEvent;
    this.isLoading = nativeEvent.loading;
  }}
/>

Function passed to onLoadEnd is called with a SyntheticEvent wrapping a nativeEvent with these properties:

canGoBack
canGoForward
loading
target
title
url

onLoadStart⬆

Function that is invoked when the WebView starts loading.

Type Required
function No

Example:

<WebView
  source={{ uri: 'https://reactnative.dev/=' }}
  onLoadStart={(syntheticEvent) => {
    // update component to be aware of loading status
    const { nativeEvent } = syntheticEvent;
    this.isLoading = nativeEvent.loading;
  }}
/>

Function passed to onLoadStart is called with a SyntheticEvent wrapping a nativeEvent with these properties:

canGoBack
canGoForward
loading
target
title
url

onLoadProgress⬆

Function that is invoked when the WebView is loading.

Type Required Platform
function No iOS, Android, macOS

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  onLoadProgress={({ nativeEvent }) => {
    this.loadingProgress = nativeEvent.progress;
  }}
/>

Function passed to onLoadProgress is called with a SyntheticEvent wrapping a nativeEvent with these properties:

canGoBack
canGoForward
loading
progress
target
title
url

onHttpError⬆

Function that is invoked when the WebView receives an http error.

Note Android API minimum level 23.

Type Required
function No

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  onHttpError={(syntheticEvent) => {
    const { nativeEvent } = syntheticEvent;
    console.warn(
      'WebView received error status code: ',
      nativeEvent.statusCode,
    );
  }}
/>

Function passed to onHttpError is called with a SyntheticEvent wrapping a nativeEvent with these properties:

canGoBack
canGoForward
description
loading
statusCode
target
title
url

Note Description is only used on Android

onRenderProcessGone⬆

Function that is invoked when the WebView process crashes or is killed by the OS on Android.

Note Android API minimum level 26. Android Only

Type Required
function No

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  onRenderProcessGone={syntheticEvent => {
    const { nativeEvent } = syntheticEvent;
    console.warn(
      'WebView Crashed: ',
      nativeEvent.didCrash,
    );
  }}
/>

Function passed to onRenderProcessGone is called with a SyntheticEvent wrapping a nativeEvent with these properties:

didCrash

onMessage⬆

Function that is invoked when the webview calls window.ReactNativeWebView.postMessage. Setting this property will inject this global into your webview.

window.ReactNativeWebView.postMessage accepts one argument, data, which will be available on the event object, event.nativeEvent.data. data must be a string.

Type Required
function No

To learn more, read the Communicating between JS and Native guide.

onNavigationStateChange⬆

Function that is invoked when the WebView loading starts or ends.

Type Required
function No

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  onNavigationStateChange={(navState) => {
    // Keep track of going back navigation within component
    this.canGoBack = navState.canGoBack;
  }}
/>

The navState object includes these properties:

canGoBack
canGoForward
loading
navigationType (iOS only)
target
title
url

onOpenWindow⬆

Function that is invoked when the WebView should open a new window.

This happens when the JS calls window.open('http://someurl', '_blank') or when the user clicks on a <a href="http://someurl" target="_blank"> link.

Type Required
function No

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  onOpenWindow={(syntheticEvent) => {
    const { nativeEvent } = syntheticEvent;
    const { targetUrl } = nativeEvent
    console.log('Intercepted OpenWindow for', targetUrl)
  }}
/>

Function passed to onOpenWindow is called with a SyntheticEvent wrapping a nativeEvent with these properties:

targetUrl

onContentProcessDidTerminate⬆

Function that is invoked when the WebView content process is terminated.

Type Required Platform
function No iOS and macOS WKWebView

iOS Web views use a separate process to render and manage web content. WebKit calls this method when the process for the specified web view terminates for any reason. The reason is not necessarily a crash. For instance, since iOS WebViews are not included in the total RAM of the app, they can be terminated independently of the app to liberate memory for new apps the user is opening. It's not unexpected to have WebViews get terminated after a while in the background.

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  onContentProcessDidTerminate={(syntheticEvent) => {
    const { nativeEvent } = syntheticEvent;
    console.warn('Content process terminated, reloading', nativeEvent);
    this.refs.webview.reload();
  }}
/>

Function passed to onContentProcessDidTerminate is called with a SyntheticEvent wrapping a nativeEvent with these properties:

canGoBack
canGoForward
loading
target
title
url

onScroll⬆

Function that is invoked when the scroll event is fired in the WebView.

Type Required Platform
function No iOS, macOS, Android, Windows

Example:

<Webview
  source={{ uri: 'https://reactnative.dev' }}
  onScroll={syntheticEvent => {
    const { contentOffset } = syntheticEvent.nativeEvent
    console.table(contentOffset)
  }}
/>

Function passed to onScroll is called with a SyntheticEvent wrapping a nativeEvent with these properties:

contentInset
contentOffset
contentSize
layoutMeasurement
velocity
zoomScale

originWhitelist⬆

List of origin strings to allow being navigated to. The strings allow wildcards and get matched against just the origin (not the full URL). If the user taps to navigate to a new page but the new page is not in this whitelist, the URL will be handled by the OS. The default whitelisted origins are "http://" and "https://".

Type Required Platform
array of strings No iOS, Android, macOS

Example:

//only allow URIs that begin with https:// or git://
<WebView
  source={{ uri: 'https://reactnative.dev' }}
  originWhitelist={['https://*', 'git://*']}
/>

renderError⬆

Function that returns a view to show if there's an error.

Type Required Platform
function No iOS, Android, macOS

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  renderError={(errorName) => <Error name={errorName} />}
/>

The function passed to renderError will be called with the name of the error

renderLoading⬆

Function that returns a loading indicator. The startInLoadingState prop must be set to true in order to use this prop.

Type Required Platform
function No iOS, Android, macOS

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  startInLoadingState={true}
  renderLoading={() => <Loading />}
/>

scalesPageToFit⬆

Boolean that controls whether the web content is scaled to fit the view and enables the user to change the scale. The default value is true.

Type Required Platform
bool No Android

onShouldStartLoadWithRequest⬆

Function that allows custom handling of any web view requests. Return true from the function to continue loading the request and false to stop loading.

On Android, is not called on the first load.

Type Required Platform
function No iOS, Android, macOS

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  onShouldStartLoadWithRequest={(request) => {
    // Only allow navigating within this website
    return request.url.startsWith('https://reactnative.dev');
  }}
/>

The request object includes these properties:

title
url
loading
target
canGoBack
canGoForward
lockIdentifier
mainDocumentURL (iOS only)
navigationType (iOS only)
isTopFrame (iOS only)
hasTargetFrame (iOS only)

The hasTargetFrame prop is a boolean that is false when the navigation targets a new window or tab, otherwise it should be true (more info). Note that this prop should always be true when onOpenWindow event is registered on the WebView because the false case is intercepted by this event.

startInLoadingState⬆

Boolean value that forces the WebView to show the loading view on the first load. This prop must be set to true in order for the renderLoading prop to work.

Type Required Platform
bool No iOS, Android, macOS

style⬆

A style object that allow you to customize the WebView style. Please note that there are default styles (example: you need to add flex: 0 to the style if you want to use height property).

Type Required
style No

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  style={{ marginTop: 20 }}
/>

containerStyle⬆

A style object that allow you to customize the WebView container style. Please note that there are default styles (example: you need to add flex: 0 to the style if you want to use height property).

Type Required
style No

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  containerStyle={{ marginTop: 20 }}
/>

decelerationRate⬆

A floating-point number that determines how quickly the scroll view decelerates after the user lifts their finger. You may also use the string shortcuts "normal" and "fast" which match the underlying iOS settings for UIScrollViewDecelerationRateNormal and UIScrollViewDecelerationRateFast respectively:

  • normal: 0.998
  • fast: 0.99 (the default for iOS web view)
Type Required Platform
number No iOS

domStorageEnabled⬆

Boolean value to control whether DOM Storage is enabled. Used only in Android.

Type Required Platform
bool No Android

javaScriptEnabled⬆

Boolean value to enable JavaScript in the WebView. The default value is true.

Type Required
bool No

javaScriptCanOpenWindowsAutomatically⬆

A Boolean value indicating whether JavaScript can open windows without user interaction. The default value is false.

Type Required
bool No

androidLayerType⬆

Specifies the layer type.

Possible values for androidLayerType are:

  • none (default) - The view does not have a layer.
  • software - The view has a software layer. A software layer is backed by a bitmap and causes the view to be rendered using Android's software rendering pipeline, even if hardware acceleration is enabled.
  • hardware - The view has a hardware layer. A hardware layer is backed by a hardware specific texture and causes the view to be rendered using Android's hardware rendering pipeline, but only if hardware acceleration is turned on for the view hierarchy.
Type Required Platform
string No Android

mixedContentMode⬆

Specifies the mixed content mode. i.e WebView will allow a secure origin to load content from any other origin.

Possible values for mixedContentMode are:

  • never (default) - WebView will not allow a secure origin to load content from an insecure origin.
  • always - WebView will allow a secure origin to load content from any other origin, even if that origin is insecure.
  • compatibility - WebView will attempt to be compatible with the approach of a modern web browser with regard to mixed content.
Type Required Platform
string No Android

thirdPartyCookiesEnabled⬆

Boolean value to enable third party cookies in the WebView. Used on Android Lollipop and above only as third party cookies are enabled by default on Android Kitkat and below and on iOS. The default value is true. For more on cookies, read the Guide

Type Required Platform
bool No Android

userAgent⬆

Sets the user-agent for the WebView.

Type Required Platform
string No iOS, Android, macOS

applicationNameForUserAgent⬆

Append to the existing user-agent. Setting userAgent will override this.

Type Required Platform
string No iOS, Android, macOS 
<WebView
  source={{ uri: 'https://reactnative.dev' }}
  applicationNameForUserAgent={'DemoApp/1.1.0'}
/>
// Resulting User-Agent will look like:
// Mozilla/5.0 (Linux; Android 8.1.0; Android SDK built for x86 Build/OSM1.180201.021; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/61.0.3163.98 Mobile Safari/537.36 DemoApp/1.1.0
// Mozilla/5.0 (iPhone; CPU iPhone OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 DemoApp/1.1.0

allowsFullscreenVideo⬆

Boolean that determines whether videos are allowed to be played in fullscreen. The default value is false.

Type Required Platform
bool No Android

allowsInlineMediaPlayback⬆

Boolean that determines whether HTML5 videos play inline or use the native full-screen controller. The default value is false.

NOTE

In order for video to play inline, not only does this property need to be set to true, but the video element in the HTML document must also include the webkit-playsinline attribute.

Type Required Platform
bool No iOS

allowsAirPlayForMediaPlayback⬆

A Boolean value indicating whether AirPlay is allowed. The default value is false.

Type Required Platform
boolean No iOS and macOS

bounces⬆

Boolean value that determines whether the web view bounces when it reaches the edge of the content. The default value is true.

Type Required Platform
bool No iOS

overScrollMode⬆

Specifies the over scroll mode.

Possible values for overScrollMode are:

  • always (default) - Always allow a user to over-scroll this view, provided it is a view that can scroll.
  • content - Allow a user to over-scroll this view only if the content is large enough to meaningfully scroll, provided it is a view that can scroll.
  • never - Never allow a user to over-scroll this view.
Type Required Platform
string No Android

contentInset⬆

The amount by which the web view content is inset from the edges of the scroll view. Defaults to {top: 0, left: 0, bottom: 0, right: 0}.

Type Required Platform
object: {top: number, left: number, bottom: number, right: number} No iOS

contentInsetAdjustmentBehavior⬆

This property specifies how the safe area insets are used to modify the content area of the scroll view. The default value of this property is "never". Available on iOS 11 and later. Defaults to never.

Possible values:

  • automatic
  • scrollableAxes
  • never
  • always
Type Required Platform
string No iOS

contentMode⬆

Controls the type of content to load. Available on iOS 13 and later. Defaults to recommended, which loads mobile content on iPhone & iPad Mini but desktop content on larger iPads.

See Introducing Desktop-class Browsing on iPad for more.

Possible values:

  • recommended
  • mobile
  • desktop
Type Required Platform
string No iOS

dataDetectorTypes⬆

Determines the types of data converted to clickable URLs in the web view's content. By default only phone numbers are detected.

You can provide one type or an array of many types.

Possible values for dataDetectorTypes are:

  • phoneNumber
  • link
  • address
  • calendarEvent
  • none
  • all
  • trackingNumber
  • flightNumber
  • lookupSuggestion
Type Required Platform
string, or array No iOS

scrollEnabled⬆

Boolean value that determines whether scrolling is enabled in the WebView. The default value is true. Setting this to false will prevent the webview from moving the document body when the keyboard appears over an input.

Type Required Platform
bool No iOS and macOS

nestedScrollEnabled⬆

Boolean value that determines whether scrolling is possible in the WebView when used inside a ScrollView on Android. The default value is false.

Setting this to true will prevent the ScrollView to scroll when scrolling from inside the WebView.

Type Required Platform
bool No Android

setBuiltInZoomControls⬆

Sets whether the WebView should use its built-in zoom mechanisms. The default value is true. Setting this to false will prevent the use of a pinch gesture to control zooming.

Type Required Platform
bool No Android

setDisplayZoomControls⬆

Sets whether the WebView should display on-screen zoom controls when using the built-in zoom mechanisms (see setBuiltInZoomControls). The default value is false.

Type Required Platform
bool No Android

directionalLockEnabled⬆

A Boolean value that determines whether scrolling is disabled in a particular direction. The default value is true.

Type Required Platform
bool No iOS

showsHorizontalScrollIndicator⬆

Boolean value that determines whether a horizontal scroll indicator is shown in the WebView. The default value is true.

Type Required Platform
bool No iOS, Android, macOS

showsVerticalScrollIndicator⬆

Boolean value that determines whether a vertical scroll indicator is shown in the WebView. The default value is true.

Type Required Platform
bool No iOS, Android, macOS

geolocationEnabled⬆

Set whether Geolocation is enabled in the WebView. The default value is false. Used only in Android.

Type Required Platform
bool No Android

allowFileAccessFromFileURLs⬆

Boolean that sets whether JavaScript running in the context of a file scheme URL should be allowed to access content from other file scheme URLs. The default value is false.

Type Required Platform
bool No iOS, Android, macOS

allowUniversalAccessFromFileURLs⬆

Boolean that sets whether JavaScript running in the context of a file scheme URL should be allowed to access content from any origin. Including accessing content from other file scheme URLs. The default value is false.

Type Required Platform
bool No iOS, Android, macOS

allowingReadAccessToURL⬆

A String value that indicates which URLs the WebView's file can then reference in scripts, AJAX requests, and CSS imports. This is only used in for WebViews that are loaded with a source.uri set to a 'file://' URL. If not provided, the default is to only allow read access to the URL provided in source.uri itself.

Type Required Platform
string No iOS and macOS

keyboardDisplayRequiresUserAction⬆

If false, web content can programmatically display the keyboard. The default value is true.

Type Required Platform
boolean No iOS

hideKeyboardAccessoryView⬆

If true, this will hide the keyboard accessory view (< > and Done).

Type Required Platform
boolean No iOS

allowsBackForwardNavigationGestures⬆

If true, this will be able horizontal swipe gestures. The default value is false.

Type Required Platform
boolean No iOS and macOS

incognito⬆

Does not store any data within the lifetime of the WebView.

Type Required Platform
boolean No iOS, Android, macOS

allowFileAccess⬆

If true, this will allow access to the file system via file:// URI's. The default value is false.

Type Required Platform
boolean No Android

saveFormDataDisabled⬆

Sets whether the WebView should disable saving form data. The default value is false. This function does not have any effect from Android API level 26 onwards as there is an Autofill feature which stores form data.

Type Required Platform
boolean No Android

cacheEnabled⬆

Sets whether WebView should use browser caching.

Type Required Default Platform
boolean No true iOS, Android, macOS

cacheMode⬆

Overrides the way the cache is used. The way the cache is used is based on the navigation type. For a normal page load, the cache is checked and content is re-validated as needed. When navigating back, content is not revalidated, instead the content is just retrieved from the cache. This property allows the client to override this behavior.

Possible values are:

  • LOAD_DEFAULT - Default cache usage mode. If the navigation type doesn't impose any specific behavior, use cached resources when they are available and not expired, otherwise load resources from the network.
  • LOAD_CACHE_ELSE_NETWORK - Use cached resources when they are available, even if they have expired. Otherwise load resources from the network.
  • LOAD_NO_CACHE - Don't use the cache, load from the network.
  • LOAD_CACHE_ONLY - Don't use the network, load from the cache.
Type Required Default Platform
string No LOAD_DEFAULT Android

pagingEnabled⬆

If the value of this property is true, the scroll view stops on multiples of the scroll view’s bounds when the user scrolls. The default value is false.

Type Required Platform
boolean No iOS

allowsLinkPreview⬆

A Boolean value that determines whether pressing on a link displays a preview of the destination for the link. In iOS this property is available on devices that support 3D Touch. In iOS 10 and later, the default value is true; before that, the default value is false.

Type Required Platform
boolean No iOS and macOS

sharedCookiesEnabled⬆

Set true if shared cookies from [NSHTTPCookieStorage sharedHTTPCookieStorage] should be used for every load request in the WebView. The default value is false. For more on cookies, read the Guide

Type Required Platform
boolean No iOS and macOS

textZoom⬆

If the user has set a custom font size in the Android system, an undesirable scale of the site interface in WebView occurs.

When setting the standard textZoom (100) parameter size, this undesirable effect disappears.

Type Required Platform
number No Android

Example:

<WebView textZoom={100} />

pullToRefreshEnabled⬆

Boolean value that determines whether a pull to refresh gesture is available in the WebView. The default value is false. If true, sets bounces automatically to true.

Type Required Platform
boolean No iOS

ignoreSilentHardwareSwitch⬆

(ios only)

When set to true the hardware silent switch is ignored. Default: false

Type Required Platform
boolean No iOS

onFileDownload⬆

This property is iOS-only.

Function that is invoked when the client needs to download a file.

iOS 13+ only: If the webview navigates to a URL that results in an HTTP response with a Content-Disposition header 'attachment...', then this will be called.

iOS 8+: If the MIME type indicates that the content is not renderable by the webview, that will also cause this to be called. On iOS versions before 13, this is the only condition that will cause this function to be called.

The application will need to provide its own code to actually download the file.

If not provided, the default is to let the webview try to render the file.

Example:

<WebView
  source={{ uri: 'https://reactnative.dev' }}
  onFileDownload={({ nativeEvent: { downloadUrl } }) => {
    // You use downloadUrl which is a string to download files however you want.
  }}
/>
Type Required Platform
function No iOS

limitsNavigationsToAppBoundDomains⬆

If true indicates to WebKit that a WKWebView will only navigate to app-bound domains. Only applicable for iOS 14 or greater.

Once set, any attempt to navigate away from an app-bound domain will fail with the error “App-bound domain failure.” Applications can specify up to 10 “app-bound” domains using a new Info.plist key WKAppBoundDomains. For more information see App-Bound Domains.

Type Required Platform
boolean No iOS

Example:

<WebView limitsNavigationsToAppBoundDomains={true} />

textInteractionEnabled⬆

If false indicates to WebKit that a WKWebView will not interact with text, thus not showing a text selection loop. Only applicable for iOS 14.5 or greater.

Defaults to true.

Type Required Platform
boolean No iOS

Example:

<WebView textInteractionEnabled={false} />

suppressMenuItems⬆

Allows to suppress menu item from the default context menu.

Possible values are:

  • cut
  • copy
  • paste
  • delete
  • select
  • selectAll
  • replace
  • lookup
  • translate
  • bold
  • italic
  • underline
  • share
Type Required Default Platform
array of strings No [] iOS

mediaCapturePermissionGrantType⬆

This property specifies how to handle media capture permission requests. Defaults to prompt, resulting in the user being prompted repeatedly. Available on iOS 15 and later.

Possible values:

  • grantIfSameHostElsePrompt: If the security origin's host of the permission request equals the host of the WebView's current URL, the permission is granted if it has been granted before. Otherwise, the user gets prompted.
  • grantIfSameHostElseDeny: If the security origin's host of the permission request equals the host of the WebView's current URL, the permission is granted if it has been granted before. Otherwise, it gets denied.
  • deny
  • grant: The permission is granted if it has been granted before.
  • prompt

Note that a grant may still result in a prompt, for example if the user has never been prompted for the permission before.

Type Required Platform
string No iOS

Example:

<WebView mediaCapturePermissionGrantType={'grantIfSameHostElsePrompt'} />

autoManageStatusBarEnabled⬆

If set to true, the status bar will be automatically hidden/shown by WebView, specifically when full screen video is being watched. If false, WebView will not manage the status bar at all. The default value is true.

Type Required Platform
boolean No iOS

Example:

<WebView autoManageStatusBarEnabled={false} />

setSupportMultipleWindows⬆

Sets whether the WebView supports multiple windows. See Android documentation for more information. Setting this to false can expose the application to this vulnerability allowing a malicious iframe to escape into the top layer DOM.

Type Required Default Platform
boolean No true Android

Example:

<WebView setSupportMultipleWindows={false} />

enableApplePay⬆

A Boolean value which, when set to true, WebView will be rendered with Apple Pay support. Once set, websites will be able to invoke Apple Pay from React Native Webview. This comes with a cost features like injectJavaScript, html5 History, sharedCookiesEnabled, injectedJavaScript, injectedJavaScriptBeforeContentLoaded will not work See Apple Pay Release Note.

If you are required to send message to App , webpage has to explicitly call webkit message handler and receive it on onMessage handler on react native side

window.webkit.messageHandlers.ReactNativeWebView.postMessage("hello apple pay")
Type Required Default Platform
boolean No false iOS

Example:

<WebView enableApplePay={true} />

forceDarkOn⬆

Configuring Dark Theme

NOTE : The force dark setting is not persistent. You must call the static method every time your app process is started.

NOTE : The change from day<->night mode is a configuration change so by default the activity will be restarted and pickup the new values to apply the theme. Take care when overriding this default behavior to ensure this method is still called when changes are made.

Type Required Platform
boolean No Android

Example:

<WebView forceDarkOn={false} />

menuItems⬆

An array of custom menu item objects that will be shown when selecting text. An empty array will suppress the menu. Used in tandem with onCustomMenuSelection

Type Required Platform
array of objects: {label: string, key: string} No iOS, Android

Example:

<WebView menuItems={[{ label: 'Tweet', key: 'tweet' }, { label: 'Save for later', key: 'saveForLater' }]} />

onCustomMenuSelection⬆

Function called when a custom menu item is selected. It receives a Native event, which includes three custom keys: label, key and selectedText.

Type Required Platform
function No iOS, Android 
<WebView
  menuItems={[{ label: 'Tweet', key: 'tweet' }, { label: 'Save for later', key: 'saveForLater' }]}
  onCustomMenuSelection={(webViewEvent) => {
    const { label } = webViewEvent.nativeEvent; // The name of the menu item, i.e. 'Tweet'
    const { key } = webViewEvent.nativeEvent; // The key of the menu item, i.e. 'tweet'
    const { selectedText } = webViewEvent.nativeEvent; // Text highlighted
  }}
/>

basicAuthCredential⬆

An object that specifies the credentials of a user to be used for basic authentication.

  • username (string) - A username used for basic authentication.
  • password (string) - A password used for basic authentication.
Type Required
object No

useWebView2⬆

Use WinUI WebView2 control instead of WebView control as the native webview. The WebView2 control is a WinUI control that renders web content using the Microsoft Edge (Chromium) rendering engine. Option can be toggled at runtime and supports Fast Refresh.

Type Required Platform
boolean No Windows

Example:

<WebView useWebView2={true} />

minimumFontSize⬆

Android enforces a minimum font size based on this value. A non-negative integer between 1 and 72. Any number outside the specified range will be pinned. Default value is 8. If you are using smaller font sizes and are having trouble fitting the whole window onto one screen, try setting this to a smaller value.

Type Required Platform
number No Android

Example:

<WebView minimumFontSize={1} />

downloadingMessage⬆

This is the message that is shown in the Toast when downloading a file via WebView. Default message is "Downloading".

Type Required Platform
string No Android

lackPermissionToDownloadMessage⬆

This is the message that is shown in the Toast when the webview is unable to download a file. Default message is "Cannot download files as permission was denied. Please provide permission to write to storage, in order to download files.".

Type Required Platform
string No Android

allowsProtectedMedia⬆

Whether or not the Webview can play media protected by DRM. Default is false. ⚠️ Setting this to false won't revoke the permission already granted to the current webpage. In order to do so, you'd have to reload the page as well. ⚠️

Type Required Platform
boolean No Android

fraudulentWebsiteWarningEnabled⬆

A Boolean value that indicates whether the web view shows warnings for suspected fraudulent content, such as malware or phishing attempts. The default value is true. (iOS 13+)

Type Required Default Platform
boolean No true iOS

webviewDebuggingEnabled⬆

Whether or not the webview can be debugged remotely using Safari / Chrome. Default is false. Supported on iOS as of 16.4, previous versions always allow debugging by default.

Type Required Platform
boolean No iOS & Android

Methods

goForward()⬆

goForward();

Go forward one page in the web view's history.

goBack()⬆

goBack();

Go back one page in the web view's history.

reload()⬆

reload();

Reloads the current page.

stopLoading()⬆

stopLoading();

Stop loading the current page.

injectJavaScript(str)⬆

injectJavaScript('... javascript string ...');

Executes the JavaScript string.

To learn more, read the Communicating between JS and Native guide.

requestFocus()⬆

requestFocus();

Request the webView to ask for focus. (People working on TV apps might want having a look at this!)

postMessage(str)⬆

postMessage('message');

Post a message to WebView, handled by onMessage.

clearFormData()⬆

(android only)

clearFormData();

Removes the autocomplete popup from the currently focused form field, if present. developer.android.com reference

clearCache(bool)⬆

clearCache(true);

Clears the resource cache. Note that the cache is per-application, so this will clear the cache for all WebViews used. developer.android.com reference

In iOS, includeDiskFiles will also remove data from the web storages and databases.developer.apple.com reference

clearHistory()⬆

(android only)

clearHistory();

Tells this WebView to clear its internal back/forward list. developer.android.com reference

Other Docs

Also check out our Getting Started Guide and In-Depth Guide.

Translations

This file is available in: