Android WebViewClient, onErrorReceived not being called when there is a 404

I've got a WebView, with a WebViewClient that defines onErrorReceived, and onPageFinished.

The onPageFinished gets called correctly, so I know that the WebViewclient is attached to the WebView correctly. However, there's some javascript in the WebView that calls:

location.href="http://kernel.org/asdf/asdf/asdf/asdf";

And the onErrorReceived listener is not called, even though it's a 404. Does it not work with javascript calls?

Edit: After some tes开发者_StackOverflow社区ting, I have found that NO 404s are reported to this function whatsoever. I have a test project set up here: http://vimtips.org/media/WebViewTest.zip

It appears that this method cannot be used to test for 404s. Anyone know of a way to do this?

In following situation, onErrorReceived will be called.

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

Actually, none of HTTP response codes are in the list above.

It can't be done. At least, not in a non-hacky way.