How to update request header in WebView

Question

I'm trying to access a URL from android WebView. While loading the URL i inspected through chrome that one header value is null (See the following image).

My question is, i want to update the Origin value. How can i do it?

Note: If Origin has null value only i've to update other wise i've to load as it is

Can you please add some code how you loading URL in Webview? — niks, Aug 02 '19 at 17:47
Check with answers in this thread: https://stackoverflow.com/questions/7610790/add-custom-headers-to-webview-resource-requests-android — mmmatey, Aug 05 '19 at 22:14

Alireza Tizfahm Fard · Answer 1 · 2019-08-02T12:13:56.330

For change request header you can use hashmap and add header key-value pairs

WebView web = findViewById(R.id.webView);

private Map<String, String> getHeaders() {
    Map <String, String> extraHeaders = new HashMap<String, String>();
    extraHeaders.put("Authorization", "Bearer"); 
    return headers;
}

And next step need to create WebViewClient:

private WebViewClient getWebViewClient() {
    return new WebViewClient() {

    @Override
    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
        view.loadUrl(request.getUrl().toString(), getHeaders());
        return true;
    }

    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        view.loadUrl(url, getHeaders());
        return true;
    }
};
}

Add WebViewClient to your WebView:

web.setWebViewClient(getWebViewClient());

Hi Alireza, Thank you for help. But it's not working :-( – Bahu Aug 02 '19 at 13:49 — Bahu, Aug 02 '19 at 13:49
Hi Bahu, your welcome, I will hope you can find your answer – Alireza Tizfahm Fard Aug 02 '19 at 16:30 — Alireza Tizfahm Fard, Aug 02 '19 at 16:30

score 2 · Answer 2 · answered Aug 08 '19 at 09:58

    webView = (WebView) findViewById(R.id.webView);
    progressBar = (ProgressBar) findViewById(R.id.progressBar);

    webView.getSettings().setJavaScriptEnabled(true);
    webView.setWebChromeClient(new WebChromeClient() {
        public void onProgressChanged(WebView view, int progress) {
            progressBar.setProgress(progress);
            if (progress == 100) {
                progressBar.setVisibility(View.GONE);
            }
        }
    });




    HashMap<String, String> headers=new HashMap<>();

    webView.loadUrl("https://stackoverflow.com",headers);

Let me know the issue as I am doing the same its work well at my end — Chirag, Aug 09 '19 at 12:01

score 0 · Answer 3 · answered Aug 09 '19 at 09:44

You can provide additional http headers to webview using

public void loadUrl (String url, Map additionalHttpHeaders)

additionalHttpHeaders Map: the additional headers to be used in the HTTP request for this URL, specified as a map from name to value. Note that if this map contains any of the headers that are set by default by this WebView, such as those controlling caching, accept types or the User-Agent, their values may be overridden by this WebView's defaults.

In your case origin is overridden by web view default http headers.

score 0 · Answer 4 · answered Feb 24 '21 at 20:34

You can create a custom WebViewClient and override the shouldInterceptRequest() method. If you target API 21 and higher, this will be

override fun shouldInterceptRequest(view: WebView, request: WebResourceRequest): WebResourceResponse?

Inside, you will open an HTTPS connection:

val requestUrl = request.url!!.toString()
val httpsUrl = URL(requestUrl)
val conn: HttpsURLConnection = httpsUrl.openConnection() as HttpsURLConnection
for ((key, value) in request.requestHeaders) {
  conn.addRequestProperty(key, value)
}

now you have chance to add new headers or modify the existing ones, e.g.

conn.setRequestProperty("ORIGIN", "https://stackoverflow.com")

when your request is all set, you can wrap the results in a fresh WebResourceResponse:

return WebResourceResponse(
  conn.contentType.substringBefore(";"), 
  conn.contentType.substringAfter("charset=", "UTF-8"), 
  conn.inputStream)

a typical conn.contentType is "text/html; charset=UTF-8". You may add more resilient parsing, or simply use the hardcoded values if you know them.

How to update request header in WebView

4 Answers4

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