File	Doc	Category	Size	Date	Package
WebViewClient.java	API Doc	Android 5.1 API	15460	Thu Mar 12 22:22:10 GMT 2015	android.webkit

WebViewClient

• java.lang.Object

Fields Summary
public static final int	ERROR_UNKNOWN Generic error
public static final int	ERROR_HOST_LOOKUP Server or proxy hostname lookup failed
public static final int	ERROR_UNSUPPORTED_AUTH_SCHEME Unsupported authentication scheme (not basic or digest)
public static final int	ERROR_AUTHENTICATION User authentication failed on server
public static final int	ERROR_PROXY_AUTHENTICATION User authentication failed on proxy
public static final int	ERROR_CONNECT Failed to connect to the server
public static final int	ERROR_IO Failed to read or write to the server
public static final int	ERROR_TIMEOUT Connection timed out
public static final int	ERROR_REDIRECT_LOOP Too many redirects
public static final int	ERROR_UNSUPPORTED_SCHEME Unsupported URI scheme
public static final int	ERROR_FAILED_SSL_HANDSHAKE Failed to perform SSL handshake
public static final int	ERROR_BAD_URL Malformed URL
public static final int	ERROR_FILE Generic file error
public static final int	ERROR_FILE_NOT_FOUND File not found
public static final int	ERROR_TOO_MANY_REQUESTS Too many requests during this load

Constructors Summary

Methods Summary
public void	doUpdateVisitedHistory(WebView view, java.lang.String url, boolean isReload) Notify the host application to update its visited links database. param view The WebView that is initiating the callback. param url The url being visited. param isReload True if this url is being reloaded.
public void	onFormResubmission(WebView view, android.os.Message dontResend, android.os.Message resend) As the host application if the browser should resend data as the requested page was a result of a POST. The default is to not resend the data. param view The WebView that is initiating the callback. param dontResend The message to send if the browser should not resend param resend The message to send if the browser should resend data dontResend.sendToTarget();
public void	onLoadResource(WebView view, java.lang.String url) Notify the host application that the WebView will load the resource specified by the given url. param view The WebView that is initiating the callback. param url The url of the resource the WebView will load.
public void	onPageFinished(WebView view, java.lang.String url) Notify the host application that a page has finished loading. This method is called only for main frame. When onPageFinished() is called, the rendering picture may not be updated yet. To get the notification for the new Picture, use {@link WebView.PictureListener#onNewPicture}. param view The WebView that is initiating the callback. param url The url of the page.
public void	onPageStarted(WebView view, java.lang.String url, android.graphics.Bitmap favicon) Notify the host application that a page has started loading. This method is called once for each main frame load so a page with iframes or framesets will call onPageStarted one time for the main frame. This also means that onPageStarted will not be called when the contents of an embedded frame changes, i.e. clicking a link whose target is an iframe. param view The WebView that is initiating the callback. param url The url to be loaded. param favicon The favicon for this page if it already exists in the database.
public void	onReceivedClientCertRequest(WebView view, ClientCertRequest request) Notify the host application to handle a SSL client certificate request. The host application is responsible for showing the UI if desired and providing the keys. There are three ways to respond: proceed(), cancel() or ignore(). Webview remembers the response if proceed() or cancel() is called and does not call onReceivedClientCertRequest() again for the same host and port pair. Webview does not remember the response if ignore() is called. This method is called on the UI thread. During the callback, the connection is suspended. The default behavior is to cancel, returning no client certificate. param view The WebView that is initiating the callback param request An instance of a {@link ClientCertRequest} request.cancel();
public void	onReceivedError(WebView view, int errorCode, java.lang.String description, java.lang.String failingUrl) Report an error to the host application. These errors are unrecoverable (i.e. the main resource is unavailable). The errorCode parameter corresponds to one of the ERROR_* constants. param view The WebView that is initiating the callback. param errorCode The error code corresponding to an ERROR_* value. param description A String describing the error. param failingUrl The url that failed to load.
public void	onReceivedHttpAuthRequest(WebView view, HttpAuthHandler handler, java.lang.String host, java.lang.String realm) Notifies the host application that the WebView received an HTTP authentication request. The host application can use the supplied {@link HttpAuthHandler} to set the WebView's response to the request. The default behavior is to cancel the request. param view the WebView that is initiating the callback param handler the HttpAuthHandler used to set the WebView's response param host the host requiring authentication param realm the realm for which authentication is required see WebView#getHttpAuthUsernamePassword handler.cancel();
public void	onReceivedLoginRequest(WebView view, java.lang.String realm, java.lang.String account, java.lang.String args) Notify the host application that a request to automatically log in the user has been processed. param view The WebView requesting the login. param realm The account realm used to look up accounts. param account An optional account. If not null, the account should be checked against accounts on the device. If it is a valid account, it should be used to log in the user. param args Authenticator specific arguments used to log in the user.
public void	onReceivedSslError(WebView view, SslErrorHandler handler, android.net.http.SslError error) Notify the host application that an SSL error occurred while loading a resource. The host application must call either handler.cancel() or handler.proceed(). Note that the decision may be retained for use in response to future SSL errors. The default behavior is to cancel the load. param view The WebView that is initiating the callback. param handler An SslErrorHandler object that will handle the user's response. param error The SSL error object. handler.cancel();
public void	onScaleChanged(WebView view, float oldScale, float newScale) Notify the host application that the scale applied to the WebView has changed. param view he WebView that is initiating the callback. param oldScale The old scale factor param newScale The new scale factor
public void	onTooManyRedirects(WebView view, android.os.Message cancelMsg, android.os.Message continueMsg) Notify the host application that there have been an excessive number of HTTP redirects. As the host application if it would like to continue trying to load the resource. The default behavior is to send the cancel message. param view The WebView that is initiating the callback. param cancelMsg The message to send if the host wants to cancel param continueMsg The message to send if the host wants to continue deprecated This method is no longer called. When the WebView encounters a redirect loop, it will cancel the load. cancelMsg.sendToTarget();
public void	onUnhandledInputEvent(WebView view, android.view.InputEvent event) Notify the host application that a input event was not handled by the WebView. Except system keys, WebView always consumes input events in the normal flow or if shouldOverrideKeyEvent returns true. This is called asynchronously from where the event is dispatched. It gives the host application a chance to handle the unhandled input events. Note that if the event is a {@link android.view.MotionEvent}, then it's lifetime is only that of the function call. If the WebViewClient wishes to use the event beyond that, then it must create a copy of the event. It is the responsibility of overriders of this method to call {@link #onUnhandledKeyEvent(WebView, KeyEvent)} when appropriate if they wish to continue receiving events through it. param view The WebView that is initiating the callback. param event The input event. if (event instanceof KeyEvent) { onUnhandledKeyEvent(view, (KeyEvent) event); return; } onUnhandledInputEventInternal(view, event);
private void	onUnhandledInputEventInternal(WebView view, android.view.InputEvent event) ViewRootImpl root = view.getViewRootImpl(); if (root != null) { root.dispatchUnhandledInputEvent(event); }
public void	onUnhandledKeyEvent(WebView view, android.view.KeyEvent event) Notify the host application that a key was not handled by the WebView. Except system keys, WebView always consumes the keys in the normal flow or if shouldOverrideKeyEvent returns true. This is called asynchronously from where the key is dispatched. It gives the host application a chance to handle the unhandled key events. param view The WebView that is initiating the callback. param event The key event. deprecated This method is subsumed by the more generic onUnhandledInputEvent. onUnhandledInputEventInternal(view, event);
public WebResourceResponse	shouldInterceptRequest(WebView view, java.lang.String url) Notify the host application of a resource request and allow the application to return the data. If the return value is null, the WebView will continue to load the resource as usual. Otherwise, the return response and data will be used. NOTE: This method is called on a thread other than the UI thread so clients should exercise caution when accessing private data or the view system. param view The {@link android.webkit.WebView} that is requesting the resource. param url The raw url of the resource. return A {@link android.webkit.WebResourceResponse} containing the response information or null if the WebView should load the resource itself. deprecated Use {@link #shouldInterceptRequest(WebView, WebResourceRequest) shouldInterceptRequest(WebView, WebResourceRequest)} instead. return null;
public WebResourceResponse	shouldInterceptRequest(WebView view, WebResourceRequest request) Notify the host application of a resource request and allow the application to return the data. If the return value is null, the WebView will continue to load the resource as usual. Otherwise, the return response and data will be used. NOTE: This method is called on a thread other than the UI thread so clients should exercise caution when accessing private data or the view system. param view The {@link android.webkit.WebView} that is requesting the resource. param request Object containing the details of the request. return A {@link android.webkit.WebResourceResponse} containing the response information or null if the WebView should load the resource itself. return shouldInterceptRequest(view, request.getUrl().toString());
public boolean	shouldOverrideKeyEvent(WebView view, android.view.KeyEvent event) Give the host application a chance to handle the key event synchronously. e.g. menu shortcut key events need to be filtered this way. If return true, WebView will not handle the key event. If return false, WebView will always handle the key event, so none of the super in the view chain will see the key event. The default behavior returns false. param view The WebView that is initiating the callback. param event The key event. return True if the host application wants to handle the key event itself, otherwise return false return false;
public boolean	shouldOverrideUrlLoading(WebView view, java.lang.String url) Give the host application a chance to take over the control when a new url is about to be loaded in the current WebView. If WebViewClient is not provided, by default WebView will ask Activity Manager to choose the proper handler for the url. If WebViewClient is provided, return true means the host application handles the url, while return false means the current WebView handles the url. This method is not called for requests using the POST "method". param view The WebView that is initiating the callback. param url The url to be loaded. return True if the host application wants to leave the current WebView and handle the url itself, otherwise return false. return false;