WebViewClient

User authentication failed on server

Malformed URL

Failed to connect to the server

Failed to perform SSL handshake

Generic file error

File not found

Server or proxy hostname lookup failed

Failed to read or write to the server

User authentication failed on proxy

Too many redirects

Connection timed out

Too many requests during this load

Generic error

Unsupported authentication scheme (not basic or digest)

Unsupported URI scheme

Notify the host application to update its visited links database.

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.

Notify the host application that the WebView will load the resource specified by the given 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 onNewPicture(WebView, Picture) .

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.

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.

Notifies the host application that the WebView received an HTTP authentication request. The host application can use the supplied HttpAuthHandler to set the WebView's response to the request. The default behavior is to cancel the request.

Notify the host application that a request to automatically log in the user has been processed.

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.

Notify the host application that the scale applied to the WebView has changed.

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.

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.

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.

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.

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".