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    private void getAuthorizationCode() {
        String authorizationUrl = "https://runkeeper.com/apps/authorize?response_type=code&client_id=%s&redirect_uri=%s";
        authorizationUrl = String.format(authorizationUrl, CLIENT_ID, CALLBACK_URL);
        
        webView.setWebViewClient(new WebViewClient() {
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                if (url.startsWith(CALLBACK_URL)) {
                    final String authCode = Uri.parse(url).getQueryParameter("code");
                    webView.setVisibility(View.GONE);
                    getAccessToken(authCode);
                    return true;
                }

                return super.shouldOverrideUrlLoading(view, url);
            }
        });

        webView.loadUrl(authorizationUrl);
    }