Summary: Constants | Methods | Inherited Methods

WebViewFeature

Kotlin |Java

public class WebViewFeature
extends Object

java.lang.Object
↳	androidx.webkit.WebViewFeature

Utility class for checking which WebView Support Library features are supported on the device.

Summary

Constants
`String`	`CREATE_WEB_MESSAGE_CHANNEL` Feature for `isFeatureSupported(String)`.
`String`	`DISABLED_ACTION_MODE_MENU_ITEMS` Feature for `isFeatureSupported(String)`.
`String`	`GET_WEB_CHROME_CLIENT` Feature for `isFeatureSupported(String)`.
`String`	`GET_WEB_VIEW_CLIENT` Feature for `isFeatureSupported(String)`.
`String`	`GET_WEB_VIEW_RENDERER` Feature for `isFeatureSupported(String)`.
`String`	`OFF_SCREEN_PRERASTER` Feature for `isFeatureSupported(String)`.
`String`	`POST_WEB_MESSAGE` Feature for `isFeatureSupported(String)`.
`String`	`PROXY_OVERRIDE` Feature for `isFeatureSupported(String)`.
`String`	`RECEIVE_HTTP_ERROR` Feature for `isFeatureSupported(String)`.
`String`	`RECEIVE_WEB_RESOURCE_ERROR` Feature for `isFeatureSupported(String)`.
`String`	`SAFE_BROWSING_ENABLE` Feature for `isFeatureSupported(String)`.
`String`	`SAFE_BROWSING_HIT` Feature for `isFeatureSupported(String)`.
`String`	`SAFE_BROWSING_PRIVACY_POLICY_URL` Feature for `isFeatureSupported(String)`.
`String`	`SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY` Feature for `isFeatureSupported(String)`.
`String`	`SAFE_BROWSING_RESPONSE_PROCEED` Feature for `isFeatureSupported(String)`.
`String`	`SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL` Feature for `isFeatureSupported(String)`.
`String`	`SAFE_BROWSING_WHITELIST` Feature for `isFeatureSupported(String)`.
`String`	`SERVICE_WORKER_BASIC_USAGE` Feature for `isFeatureSupported(String)`.
`String`	`SERVICE_WORKER_BLOCK_NETWORK_LOADS` Feature for `isFeatureSupported(String)`.
`String`	`SERVICE_WORKER_CACHE_MODE` Feature for `isFeatureSupported(String)`.
`String`	`SERVICE_WORKER_CONTENT_ACCESS` Feature for `isFeatureSupported(String)`.
`String`	`SERVICE_WORKER_FILE_ACCESS` Feature for `isFeatureSupported(String)`.
`String`	`SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST` Feature for `isFeatureSupported(String)`.
`String`	`SHOULD_OVERRIDE_WITH_REDIRECTS` Feature for `isFeatureSupported(String)`.
`String`	`START_SAFE_BROWSING` Feature for `isFeatureSupported(String)`.
`String`	`TRACING_CONTROLLER_BASIC_USAGE` Feature for `isFeatureSupported(String)`.
`String`	`VISUAL_STATE_CALLBACK` Feature for `isFeatureSupported(String)`.
`String`	`WEB_MESSAGE_CALLBACK_ON_MESSAGE` Feature for `isFeatureSupported(String)`.
`String`	`WEB_MESSAGE_PORT_CLOSE` Feature for `isFeatureSupported(String)`.
`String`	`WEB_MESSAGE_PORT_POST_MESSAGE` Feature for `isFeatureSupported(String)`.
`String`	`WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK` Feature for `isFeatureSupported(String)`.
`String`	`WEB_RESOURCE_ERROR_GET_CODE` Feature for `isFeatureSupported(String)`.
`String`	`WEB_RESOURCE_ERROR_GET_DESCRIPTION` Feature for `isFeatureSupported(String)`.
`String`	`WEB_RESOURCE_REQUEST_IS_REDIRECT` Feature for `isFeatureSupported(String)`.
`String`	`WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE` i* Feature for `isFeatureSupported(String)`.
`String`	`WEB_VIEW_RENDERER_TERMINATE` Feature for `isFeatureSupported(String)`.

Public methods
`static boolean`	`isFeatureSupported(String feature)` Return whether a feature is supported at run-time.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()`
`boolean`	`equals(Object arg0)`
`void`	`finalize()`
`final Class<?>`	`getClass()`
`int`	`hashCode()`
`final void`	`notify()`
`final void`	`notifyAll()`
`String`	`toString()`
`final void`	`wait(long arg0, int arg1)`
`final void`	`wait(long arg0)`
`final void`	`wait()`

Constants

CREATE_WEB_MESSAGE_CHANNEL

public static final String CREATE_WEB_MESSAGE_CHANNEL

Feature for isFeatureSupported(String). This feature covers WebViewCompat.createWebMessageChannel(WebView).

Constant Value: "CREATE_WEB_MESSAGE_CHANNEL"

DISABLED_ACTION_MODE_MENU_ITEMS

public static final String DISABLED_ACTION_MODE_MENU_ITEMS

Feature for isFeatureSupported(String). This feature covers WebSettingsCompat.getDisabledActionModeMenuItems(WebSettings), and WebSettingsCompat.setDisabledActionModeMenuItems(WebSettings, int).

Constant Value: "DISABLED_ACTION_MODE_MENU_ITEMS"

GET_WEB_CHROME_CLIENT

public static final String GET_WEB_CHROME_CLIENT

Feature for isFeatureSupported(String). This feature covers WebViewCompat.getWebChromeClient(WebView)

Constant Value: "GET_WEB_CHROME_CLIENT"

GET_WEB_VIEW_CLIENT

public static final String GET_WEB_VIEW_CLIENT

Feature for isFeatureSupported(String). This feature covers WebViewCompat.getWebViewClient(WebView)

Constant Value: "GET_WEB_VIEW_CLIENT"

GET_WEB_VIEW_RENDERER

public static final String GET_WEB_VIEW_RENDERER

Feature for isFeatureSupported(String). This feature covers WebViewCompat.getWebViewRenderProcess(WebView)

Constant Value: "GET_WEB_VIEW_RENDERER"

OFF_SCREEN_PRERASTER

public static final String OFF_SCREEN_PRERASTER

Feature for isFeatureSupported(String). This feature covers WebSettingsCompat.getOffscreenPreRaster(WebSettings), and WebSettingsCompat.setOffscreenPreRaster(WebSettings, boolean).

Constant Value: "OFF_SCREEN_PRERASTER"

POST_WEB_MESSAGE

public static final String POST_WEB_MESSAGE

Feature for isFeatureSupported(String). This feature covers WebViewCompat.postWebMessage(WebView, WebMessageCompat, Uri).

Constant Value: "POST_WEB_MESSAGE"

PROXY_OVERRIDE

public static final String PROXY_OVERRIDE

Feature for isFeatureSupported(String). This feature covers ProxyController.setProxyOverride(ProxyConfig, Executor, Runnable), ProxyController.clearProxyOverride(Executor, Runnable), and

Constant Value: "PROXY_OVERRIDE"

RECEIVE_HTTP_ERROR

public static final String RECEIVE_HTTP_ERROR

Feature for isFeatureSupported(String). This feature covers WebViewClientCompat.onReceivedHttpError(android.webkit.WebView, WebResourceRequest, WebResourceResponse).

Constant Value: "RECEIVE_HTTP_ERROR"

RECEIVE_WEB_RESOURCE_ERROR

public static final String RECEIVE_WEB_RESOURCE_ERROR

Feature for isFeatureSupported(String). This feature covers WebViewClientCompat.onReceivedError(android.webkit.WebView, WebResourceRequest, WebResourceErrorCompat).

Constant Value: "RECEIVE_WEB_RESOURCE_ERROR"

SAFE_BROWSING_ENABLE

public static final String SAFE_BROWSING_ENABLE

Feature for isFeatureSupported(String). This feature covers WebSettingsCompat.getSafeBrowsingEnabled(WebSettings), and WebSettingsCompat.setSafeBrowsingEnabled(WebSettings, boolean).

Constant Value: "SAFE_BROWSING_ENABLE"

SAFE_BROWSING_HIT

public static final String SAFE_BROWSING_HIT

Feature for isFeatureSupported(String). This feature covers WebViewClientCompat.onSafeBrowsingHit(android.webkit.WebView, WebResourceRequest, int, SafeBrowsingResponseCompat).

Constant Value: "SAFE_BROWSING_HIT"

SAFE_BROWSING_PRIVACY_POLICY_URL

public static final String SAFE_BROWSING_PRIVACY_POLICY_URL

Feature for isFeatureSupported(String). This feature covers WebViewCompat.getSafeBrowsingPrivacyPolicyUrl().

Constant Value: "SAFE_BROWSING_PRIVACY_POLICY_URL"

SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY

public static final String SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY

Feature for isFeatureSupported(String). This feature covers SafeBrowsingResponseCompat.backToSafety(boolean).

Constant Value: "SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY"

SAFE_BROWSING_RESPONSE_PROCEED

public static final String SAFE_BROWSING_RESPONSE_PROCEED

Feature for isFeatureSupported(String). This feature covers SafeBrowsingResponseCompat.proceed(boolean).

Constant Value: "SAFE_BROWSING_RESPONSE_PROCEED"

SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL

public static final String SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL

Feature for isFeatureSupported(String). This feature covers SafeBrowsingResponseCompat.showInterstitial(boolean).

Constant Value: "SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL"

SAFE_BROWSING_WHITELIST

public static final String SAFE_BROWSING_WHITELIST

Feature for isFeatureSupported(String). This feature covers WebViewCompat.setSafeBrowsingWhitelist(List, ValueCallback).

Constant Value: "SAFE_BROWSING_WHITELIST"

SERVICE_WORKER_BASIC_USAGE

public static final String SERVICE_WORKER_BASIC_USAGE

Feature for isFeatureSupported(String). This feature covers ServiceWorkerControllerCompat.getInstance().

Constant Value: "SERVICE_WORKER_BASIC_USAGE"

SERVICE_WORKER_BLOCK_NETWORK_LOADS

public static final String SERVICE_WORKER_BLOCK_NETWORK_LOADS

Feature for isFeatureSupported(String). This feature covers ServiceWorkerWebSettingsCompat.getBlockNetworkLoads(), and ServiceWorkerWebSettingsCompat.setBlockNetworkLoads(boolean).

Constant Value: "SERVICE_WORKER_BLOCK_NETWORK_LOADS"

SERVICE_WORKER_CACHE_MODE

public static final String SERVICE_WORKER_CACHE_MODE

Feature for isFeatureSupported(String). This feature covers ServiceWorkerWebSettingsCompat.getCacheMode(), and ServiceWorkerWebSettingsCompat.setCacheMode(int).

Constant Value: "SERVICE_WORKER_CACHE_MODE"

SERVICE_WORKER_CONTENT_ACCESS

public static final String SERVICE_WORKER_CONTENT_ACCESS

Feature for isFeatureSupported(String). This feature covers ServiceWorkerWebSettingsCompat.getAllowContentAccess(), and ServiceWorkerWebSettingsCompat.setAllowContentAccess(boolean).

Constant Value: "SERVICE_WORKER_CONTENT_ACCESS"

SERVICE_WORKER_FILE_ACCESS

public static final String SERVICE_WORKER_FILE_ACCESS

Feature for isFeatureSupported(String). This feature covers ServiceWorkerWebSettingsCompat.getAllowFileAccess(), and ServiceWorkerWebSettingsCompat.setAllowFileAccess(boolean).

Constant Value: "SERVICE_WORKER_FILE_ACCESS"

SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST

public static final String SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST

Feature for isFeatureSupported(String). This feature covers ServiceWorkerClientCompat.shouldInterceptRequest(WebResourceRequest).

Constant Value: "SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST"

SHOULD_OVERRIDE_WITH_REDIRECTS

public static final String SHOULD_OVERRIDE_WITH_REDIRECTS

Feature for isFeatureSupported(String). This feature covers WebViewClientCompat.shouldOverrideUrlLoading(android.webkit.WebView, WebResourceRequest).

Constant Value: "SHOULD_OVERRIDE_WITH_REDIRECTS"

START_SAFE_BROWSING

public static final String START_SAFE_BROWSING

Feature for isFeatureSupported(String). This feature covers WebViewCompat.startSafeBrowsing(Context, ValueCallback).

Constant Value: "START_SAFE_BROWSING"

TRACING_CONTROLLER_BASIC_USAGE

public static final String TRACING_CONTROLLER_BASIC_USAGE

Feature for isFeatureSupported(String). This feature covers TracingController.getInstance(), TracingController.isTracing(), TracingController.start(TracingConfig), TracingController.stop(OutputStream, Executor).

Constant Value: "TRACING_CONTROLLER_BASIC_USAGE"

VISUAL_STATE_CALLBACK

public static final String VISUAL_STATE_CALLBACK

Feature for isFeatureSupported(String). This feature covers WebViewCompat.postVisualStateCallback(android.webkit.WebView, long, WebViewCompat.VisualStateCallback), and WebViewClientCompat.onPageCommitVisible(android.webkit.WebView, String).

Constant Value: "VISUAL_STATE_CALLBACK"

WEB_MESSAGE_CALLBACK_ON_MESSAGE

public static final String WEB_MESSAGE_CALLBACK_ON_MESSAGE

Feature for isFeatureSupported(String). This feature covers WebMessagePortCompat.WebMessageCallbackCompat.onMessage(WebMessagePortCompat, WebMessageCompat).

Constant Value: "WEB_MESSAGE_CALLBACK_ON_MESSAGE"

WEB_MESSAGE_PORT_CLOSE

public static final String WEB_MESSAGE_PORT_CLOSE

Feature for isFeatureSupported(String). This feature covers WebMessagePortCompat.close().

Constant Value: "WEB_MESSAGE_PORT_CLOSE"

WEB_MESSAGE_PORT_POST_MESSAGE

public static final String WEB_MESSAGE_PORT_POST_MESSAGE

Feature for isFeatureSupported(String). This feature covers WebMessagePortCompat.postMessage(WebMessageCompat).

Constant Value: "WEB_MESSAGE_PORT_POST_MESSAGE"

WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK

public static final String WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK

Feature for isFeatureSupported(String). This feature covers WebMessagePortCompat.setWebMessageCallback(WebMessagePortCompat.WebMessageCallbackCompat), and WebMessagePortCompat.setWebMessageCallback(Handler, WebMessagePortCompat.WebMessageCallbackCompat).

Constant Value: "WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK"

WEB_RESOURCE_ERROR_GET_CODE

public static final String WEB_RESOURCE_ERROR_GET_CODE

Feature for isFeatureSupported(String). This feature covers WebResourceErrorCompat.getErrorCode().

Constant Value: "WEB_RESOURCE_ERROR_GET_CODE"

WEB_RESOURCE_ERROR_GET_DESCRIPTION

public static final String WEB_RESOURCE_ERROR_GET_DESCRIPTION

Feature for isFeatureSupported(String). This feature covers WebResourceErrorCompat.getDescription().

Constant Value: "WEB_RESOURCE_ERROR_GET_DESCRIPTION"

WEB_RESOURCE_REQUEST_IS_REDIRECT

public static final String WEB_RESOURCE_REQUEST_IS_REDIRECT

Feature for isFeatureSupported(String). This feature covers WebResourceRequestCompat.isRedirect(WebResourceRequest).

Constant Value: "WEB_RESOURCE_REQUEST_IS_REDIRECT"

WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE

public static final String WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE

i* Feature for isFeatureSupported(String). This feature covers WebViewCompat.getWebViewRenderProcessClient(WebView), WebViewCompat.setWebViewRenderProcessClient(WebView, WebViewRenderProcessClient),

Constant Value: "WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE"

WEB_VIEW_RENDERER_TERMINATE

public static final String WEB_VIEW_RENDERER_TERMINATE

Feature for isFeatureSupported(String). This feature covers WebViewRenderProcess.terminate()

Constant Value: "WEB_VIEW_RENDERER_TERMINATE"

Public methods

isFeatureSupported

public static boolean isFeatureSupported (String feature)

Return whether a feature is supported at run-time. On devices running Android version Build.VERSION_CODES.LOLLIPOP and higher, this will check whether a feature is supported, depending on the combination of the desired feature, the Android version of device, and the WebView APK on the device. If running on a device with a lower API level, this will always return false.

Note: If this method returns false, it is not safe to invoke the methods requiring the desired feature. Furthermore, if this method returns false for a particular feature, any callback guarded by that feature will not be invoked.

Parameters
`feature`	`String`: the feature to be checked

Returns
`boolean`	whether the feature is supported given the current platform SDK and webview version