@ammarahmed/nativescript-webview

A NativeScript webview plugin that wraps the popular react-native-webview library using Open Native. Seemlessly integrate web content into your NativeScript applications using the robust and feature rich WebView library.

Installation

npm install @open-native/core @ammarahmed/nativescript-webview react-native-webview

Make sure to set up @open-native/core in your project following the Open Native Getting Started guide.

Usage

Core

<Page xmlns:ui="@ammarahmed/nativescript-webview">

Access the WebView view through the prefix.

<Page xmlns="http://schemas.nativescript.org/tns.xsd" xmlns:ui="@ammarahmed/nativescript-webview">
    <ui:WebView source="{{ source }}"/>
</Page>

Angular

Add NativeScriptWebViewModule to the module imports where you want to use the view.

import { NativeScriptWebViewModule } from '@ammarahmed/nativescript-webview/angular';
imports: [NativeScriptWebViewModule];

Use the view in HTML.

<NSWebView [source]="source"></NSWebView>

Vue

import { registerElement } from 'nativescript-vue';

registerElement("NSWebView", ()=> require("@ammarahmed/nativescript-webview").NSWebView)

Use the view in a .vue file.

<NSWebView :source="source" />

Reference

This document lays out the current public properties and methods for the NativeScript WebView. This is mostly based on the original react-native-webview API reference with some small differences.

`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.

Local files

Place the files you want to load in app's assets folder. Then pass in the path to your file as URI:

// Android
`file:///android_asset/app/assets/path/to/your/html/file.html` // iOS
` app/assets/path/to/your/file.html`;

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

`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, Android (experimental)

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

`injectedJavaScriptForMainFrameOnly`

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

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

Type	Required	Platform
bool	No	iOS (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), loads it into all frames (e.g. iframes).

Type	Required	Platform
bool	No	iOS (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.

You can access the object in the webview using window.ReactNativeWebView.injectedObject.

window.ReactNativeWebView.injectedObjectJson();

`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

`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

`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

`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

`applicationNameForUserAgent`

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

Type	Required	Platform
string	No	iOS, Android

`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

`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

`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

`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

`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

`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

`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

`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

`incognito`

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

Type	Required	Platform
boolean	No	iOS, Android

`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

`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

`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

`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

`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

`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

`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

`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

`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

`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

`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

`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

`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

`customMenuSelection`

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

`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

`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

Events

`error`

Event that is invoked when the WebView load fails.

Type	Required
Event	No

The error event is called with a event.nativeEvent with these properties:

canGoBack
canGoForward
code
description
didFailProvisionalNavigation
domain
loading
target
title
url

`load`

Event that is invoked when the WebView has finished loading.

Type	Required
Event	No

The load event is called with a event.nativeEvent with these properties:

canGoBack
canGoForward
loading
target
title
url

`loadEnd`

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

Type	Required
Event	No

The loadEnd event is called with a event.nativeEvent with these properties:

canGoBack
canGoForward
loading
target
title
url

`loadingStart`

Event that is invoked when the WebView starts loading.

Type	Required
Event	No

The loadingStart event is called with a event.nativeEvent with these properties:

canGoBack
canGoForward
loading
target
title
url

`loadingProgress`

Event that is invoked when the WebView is loading.

Type	Required	Platform
Event	No	iOS, Android

The loadingProgress event is called with a event.nativeEvent with these properties:

canGoBack
canGoForward
loading
progress
target
title
url

`httpError`

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

Note Android API minimum level 23.

Type	Required
Event	No

The httpError event is called with a event.nativeEvent with these properties:

canGoBack
canGoForward
description
loading
statusCode
target
title
url

Note Description is only used on Android

`renderProcessGone`

Event 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
Event	No

The renderProcressGone event is called with a event.nativeEvent with these properties:

didCrash

`message`

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
Event	No

`navigationStateChange`

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

Type	Required
Event	No

The navigationStateChange event is called with the following properties:

canGoBack
canGoForward
loading
navigationType (iOS only)
target
title
url

`openWindow`

Event 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
Event	No

The openWindow event is called with a event.nativeEvent with these properties:

targetUrl

`contentProcessDidTerminate`

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

Type	Required	Platform
Event	No	iOS

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.

The contentProcessDidTerminate event is called with a event.nativeEvent with these properties:

canGoBack
canGoForward
loading
target
title
url

`scroll`

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

Type	Required	Platform
Event	No	iOS, Android

The scroll event is called with a event.nativeEvent with these properties:

contentInset
contentOffset
contentSize
layoutMeasurement
velocity
zoomScale

`shouldStartLoad`

Event that allows custom handling of any web view requests. Set event.nativeEvent.shouldStart = 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
Event	No	iOS, Android

The event.nativeEvent object includes these properties:

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

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.

`fileDownload`

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.

Type	Required	Platform
Event	No	iOS

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();

License

Apache License Version 2.0