android 404页面,How can I check from Android WebView if a page is a "404 page not found"? - Stack Over...

I might be a few years too late, but here is how I had to solve it since none of these answers worked.

I ended up using onReceivedTitle and comparing the title with the title of the page (in this case "page not found") from the site I was trying to open.

webview.setWebChromeClient(new WebChromeClient() {

@Override

public void onReceivedTitle(WebView view, String title) {

// TODO Auto-generated method stub

super.onReceivedTitle(view, title);

CharSequence pnotfound = "The page cannot be found";

if (title.contains(pnotfound)) {

pagenotfound = true;

view.stopLoading();

webview.loadUrl("https://www.google.com/search?hl=en&q=stackoverflow");

}

}

public void onProgressChanged(WebView view, int progress) {

activity.setProgress(progress * 1000);

}

});

webview.setWebViewClient(new WebViewClient() {

@Override

public void onReceivedError(WebView view, int errorCode,

String description, String failingUrl) {

Toast.makeText(activity, "Oh no! " + description,

Toast.LENGTH_SHORT).show();

}

public boolean shouldOverrideUrlLoading(WebView view, String url) {

view.loadUrl(url);

return true;

}

public void onPageFinished(WebView view, String url) {

if (dialog.isShowing()) {

dialog.dismiss();

}

}

});

The "pnotfound" will be different from site to site. But usually one site use the same "page not found" therefore you can use the Title on the site.

You might want to add a else if for if you're using multiple sites.

Hope it helps for someone.