+ });
+
+ // Replace the header that `WebView` creates for `X-Requested-With` with a null value. The default value is the application ID (com.stoutner.privacybrowser.standard).
+ customHeaders.put("X-Requested-With", "");
+
+ // Inflate a bare WebView to get the default user agent. It is not used to render content on the screen.
+ @SuppressLint("InflateParams") View webViewLayout = getLayoutInflater().inflate(R.layout.bare_webview, null, false);
+
+ // Get a handle for the WebView.
+ WebView bareWebView = webViewLayout.findViewById(R.id.bare_webview);
+
+ // Store the default user agent.
+ webViewDefaultUserAgent = bareWebView.getSettings().getUserAgentString();
+
+ // Destroy the bare WebView.
+ bareWebView.destroy();
+ }
+
+ private void applyAppSettings() {
+ // Get a handle for the shared preferences.
+ SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+
+ // Store the values from the shared preferences in variables.
+ incognitoModeEnabled = sharedPreferences.getBoolean("incognito_mode", false);
+ boolean doNotTrackEnabled = sharedPreferences.getBoolean("do_not_track", false);
+ sanitizeGoogleAnalytics = sharedPreferences.getBoolean("google_analytics", true);
+ sanitizeFacebookClickIds = sharedPreferences.getBoolean("facebook_click_ids", true);
+ sanitizeTwitterAmpRedirects = sharedPreferences.getBoolean("twitter_amp_redirects", true);
+ proxyMode = sharedPreferences.getString("proxy", getString(R.string.proxy_default_value));
+ fullScreenBrowsingModeEnabled = sharedPreferences.getBoolean("full_screen_browsing_mode", false);
+ hideAppBar = sharedPreferences.getBoolean("hide_app_bar", true);
+ scrollAppBar = sharedPreferences.getBoolean("scroll_app_bar", true);
+
+ // Apply the saved proxy mode if the app has been restarted.
+ if (savedProxyMode != null) {
+ // Apply the saved proxy mode.
+ proxyMode = savedProxyMode;
+
+ // Reset the saved proxy mode.
+ savedProxyMode = null;
+ }
+
+ // Get the search string.
+ String searchString = sharedPreferences.getString("search", getString(R.string.search_default_value));
+
+ // Set the search string.
+ if (searchString.equals("Custom URL")) { // A custom search string is used.
+ searchURL = sharedPreferences.getString("search_custom_url", getString(R.string.search_custom_url_default_value));
+ } else { // A custom search string is not used.
+ searchURL = searchString;
+ }
+
+ // Get a handle for the app compat delegate.
+ AppCompatDelegate appCompatDelegate = getDelegate();
+
+ // Get handles for the views that need to be modified.
+ FrameLayout rootFrameLayout = findViewById(R.id.root_framelayout);
+ ActionBar actionBar = appCompatDelegate.getSupportActionBar();
+ Toolbar toolbar = findViewById(R.id.toolbar);
+ LinearLayout findOnPageLinearLayout = findViewById(R.id.find_on_page_linearlayout);
+ LinearLayout tabsLinearLayout = findViewById(R.id.tabs_linearlayout);
+ SwipeRefreshLayout swipeRefreshLayout = findViewById(R.id.swiperefreshlayout);
+
+ // Remove the incorrect lint warning below that the action bar might be null.
+ assert actionBar != null;
+
+ // Apply the proxy.
+ applyProxy(false);
+
+ // Set Do Not Track status.
+ if (doNotTrackEnabled) {
+ customHeaders.put("DNT", "1");
+ } else {
+ customHeaders.remove("DNT");
+ }
+
+ // Get the current layout parameters. Using coordinator layout parameters allows the `setBehavior()` command and using app bar layout parameters allows the `setScrollFlags()` command.
+ CoordinatorLayout.LayoutParams swipeRefreshLayoutParams = (CoordinatorLayout.LayoutParams) swipeRefreshLayout.getLayoutParams();
+ AppBarLayout.LayoutParams toolbarLayoutParams = (AppBarLayout.LayoutParams) toolbar.getLayoutParams();
+ AppBarLayout.LayoutParams findOnPageLayoutParams = (AppBarLayout.LayoutParams) findOnPageLinearLayout.getLayoutParams();
+ AppBarLayout.LayoutParams tabsLayoutParams = (AppBarLayout.LayoutParams) tabsLinearLayout.getLayoutParams();
+
+ // Add the scrolling behavior to the layout parameters.
+ if (scrollAppBar) {
+ // Enable scrolling of the app bar.
+ swipeRefreshLayoutParams.setBehavior(new AppBarLayout.ScrollingViewBehavior());
+ toolbarLayoutParams.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS | AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
+ findOnPageLayoutParams.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS | AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
+ tabsLayoutParams.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS | AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP);
+ } else {
+ // Disable scrolling of the app bar.
+ swipeRefreshLayoutParams.setBehavior(null);
+ toolbarLayoutParams.setScrollFlags(0);
+ findOnPageLayoutParams.setScrollFlags(0);
+ tabsLayoutParams.setScrollFlags(0);
+
+ // Expand the app bar if it is currently collapsed.
+ appBarLayout.setExpanded(true);
+ }