import android.app.Activity;
import android.app.DialogFragment;
import android.app.DownloadManager;
+import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.graphics.Bitmap;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
import android.net.Uri;
+import android.net.http.SslCertificate;
+import android.net.http.SslError;
import android.os.Build;
import android.os.Bundle;
import android.preference.PreferenceManager;
+import android.print.PrintDocumentAdapter;
+import android.print.PrintManager;
+import android.support.annotation.NonNull;
import android.support.design.widget.NavigationView;
import android.support.design.widget.Snackbar;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v4.widget.SwipeRefreshLayout;
import android.view.inputmethod.InputMethodManager;
import android.webkit.CookieManager;
import android.webkit.DownloadListener;
+import android.webkit.SslErrorHandler;
import android.webkit.WebChromeClient;
import android.webkit.WebStorage;
import android.webkit.WebView;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
+import java.util.HashMap;
+import java.util.Map;
// We need to use AppCompatActivity from android.support.v7.app.AppCompatActivity to have access to the SupportActionBar until the minimum API is >= 21.
-public class MainWebViewActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener, CreateHomeScreenShortcut.CreateHomeScreenSchortcutListener {
- // favoriteIcon is public static so it can be accessed from CreateHomeScreenShortcut and BookmarksActivity.
- // It is also used in onCreate() and onCreateHomeScreenShortcutCreate().
- public static Bitmap favoriteIcon;
+public class MainWebViewActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener, CreateHomeScreenShortcut.CreateHomeScreenSchortcutListener,
+ SslCertificateError.SslCertificateErrorListener, DownloadFile.DownloadFileListener {
+
+ // `appBar` is public static so it can be accessed from `OrbotProxyHelper`.
+ // It is also used in `onCreate()`.
+ public static ActionBar appBar;
- // mainWebView is public static so it can be accessed from SettingsFragment.
- // It is also used in onCreate(), onOptionsItemSelected(), onNavigationItemSelected(), and loadUrlFromTextBox().
- public static WebView mainWebView;
+ // `favoriteIcon` is public static so it can be accessed from `CreateHomeScreenShortcut`, `BookmarksActivity`, `CreateBookmark`, `CreateBookmarkFolder`, and `EditBookmark`.
+ // It is also used in `onCreate()` and `onCreateHomeScreenShortcutCreate()`.
+ public static Bitmap favoriteIcon;
- // formattedUrlString is public static so it can be accessed from BookmarksActivity.
- // It is also used in onCreate(), onOptionsItemSelected(), onCreateHomeScreenShortcutCreate(), and loadUrlFromTextBox().
+ // `formattedUrlString` is public static so it can be accessed from `BookmarksActivity`.
+ // It is also used in `onCreate()`, `onOptionsItemSelected()`, `onCreateHomeScreenShortcutCreate()`, and `loadUrlFromTextBox()`.
public static String formattedUrlString;
- // mainMenu is public static so it can be accessed from SettingsFragment. It is also used in onCreateOptionsMenu() and onOptionsItemSelected().
- public static Menu mainMenu;
+ // `sslCertificate` is public static so it can be accessed from `ViewSslCertificate`. It is also used in `onCreate()`.
+ public static SslCertificate sslCertificate;
+
- // cookieManager is public static so it can be accessed from SettingsFragment. It is also used in onCreate(), onOptionsItemSelected(), and onNavigationItemSelected().
- public static CookieManager cookieManager;
+ // 'mainWebView' is used in `onCreate()`, `onOptionsItemSelected()`, `onNavigationItemSelected()`, `onRestart()`, and `loadUrlFromTextBox()`.
+ private WebView mainWebView;
- // javaScriptEnabled is public static so it can be accessed from SettingsFragment.
- // It is also used in onCreate(), onCreateOptionsMenu(), onOptionsItemSelected(), and loadUrlFromTextBox().
- public static boolean javaScriptEnabled;
+ // `swipeRefreshLayout` is used in `onCreate()`, `onPrepareOptionsMenu`, and `onRestart()`.
+ private SwipeRefreshLayout swipeRefreshLayout;
- // firstPartyCookiesEnabled is public static so it can be accessed from SettingsFragment.
- // It is also used in onCreate(), onCreateOptionsMenu(), onPrepareOptionsMenu(), and onOptionsItemSelected().
- public static boolean firstPartyCookiesEnabled;
+ // `cookieManager` is used in `onCreate()`, `onOptionsItemSelected()`, and `onNavigationItemSelected()`, and `onRestart()`.
+ private CookieManager cookieManager;
- // thirdPartyCookiesEnabled is used in onCreate(), onCreateOptionsMenu(), onPrepareOptionsMenu(), and onOptionsItemSelected().
- public static boolean thirdPartyCookiesEnabled;
+ // `customHeader` is used in `onCreate()`, `onOptionsItemSelected()`, and `loadUrlFromTextBox()`.
+ private final Map<String, String> customHeaders = new HashMap<>();
- // domStorageEnabled is public static so it can be accessed from SettingsFragment. It is also used in onCreate(), onCreateOptionsMenu(), and onOptionsItemSelected().
- public static boolean domStorageEnabled;
+ // `javaScriptEnabled` is also used in `onCreate()`, `onCreateOptionsMenu()`, `onOptionsItemSelected()`, `loadUrlFromTextBox()`, and `applySettings()`.
+ // It is `Boolean` instead of `boolean` because `applySettings()` needs to know if it is `null`.
+ private Boolean javaScriptEnabled;
- // saveFormDataEnabled is public static so it can be accessed from SettingsFragment. It is also used in onCreate(), onCreateOptionsMenu(), and onOptionsItemSelected().
- public static boolean saveFormDataEnabled;
+ // `firstPartyCookiesEnabled` is used in `onCreate()`, `onCreateOptionsMenu()`, `onPrepareOptionsMenu()`, `onOptionsItemSelected()`, and `applySettings()`.
+ private boolean firstPartyCookiesEnabled;
- // javaScriptDisabledSearchURL is public static so it can be accessed from SettingsFragment. It is also used in onCreate() and loadURLFromTextBox().
- public static String javaScriptDisabledSearchURL;
+ // `thirdPartyCookiesEnabled` used in `onCreate()`, `onCreateOptionsMenu()`, `onPrepareOptionsMenu()`, `onOptionsItemSelected()`, and `applySettings()`.
+ private boolean thirdPartyCookiesEnabled;
- // javaScriptEnabledSearchURL is public static so it can be accessed from SettingsFragment. It is also used in onCreate() and loadURLFromTextBox().
- public static String javaScriptEnabledSearchURL;
+ // `domStorageEnabled` is used in `onCreate()`, `onCreateOptionsMenu()`, `onOptionsItemSelected()`, and `applySettings()`.
+ private boolean domStorageEnabled;
- // homepage is public static so it can be accessed from SettingsFragment. It is also used in onCreate() and onOptionsItemSelected().
- public static String homepage;
+ // `saveFormDataEnabled` is used in `onCreate()`, `onCreateOptionsMenu()`, `onOptionsItemSelected()`, and `applySettings()`.
+ private boolean saveFormDataEnabled;
- // swipeToRefresh is public static so it can be accessed from SettingsFragment. It is also used in onCreate().
- public static SwipeRefreshLayout swipeToRefresh;
+ // `swipeToRefreshEnabled` is used in `onPrepareOptionsMenu()` and `applySettings()`.
+ private boolean swipeToRefreshEnabled;
- // swipeToRefreshEnabled is public static so it can be accessed from SettingsFragment. It is also used in onCreate().
- public static boolean swipeToRefreshEnabled;
+ // 'homepage' is used in `onCreate()`, `onNavigationItemSelected()`, and `applySettings()`.
+ private String homepage;
+ // `javaScriptDisabledSearchURL` is used in `loadURLFromTextBox()` and `applySettings()`.
+ private String javaScriptDisabledSearchURL;
+ // `javaScriptEnabledSearchURL` is used in `loadURLFromTextBox()` and `applySettings()`.
+ private String javaScriptEnabledSearchURL;
- // drawerToggle is used in onCreate(), onPostCreate(), onConfigurationChanged(), onNewIntent(), and onNavigationItemSelected().
+ // `mainMenu` is used in `onCreateOptionsMenu()` and `updatePrivacyIcons()`.
+ private Menu mainMenu;
+
+ // `drawerToggle` is used in `onCreate()`, `onPostCreate()`, `onConfigurationChanged()`, `onNewIntent()`, and `onNavigationItemSelected()`.
private ActionBarDrawerToggle drawerToggle;
- // drawerLayout is used in onCreate(), onNewIntent(), and onBackPressed().
+ // `drawerLayout` is used in `onCreate()`, `onNewIntent()`, and `onBackPressed()`.
private DrawerLayout drawerLayout;
- // privacyIcon is used in onCreateOptionsMenu() and updatePrivacyIcon().
- private MenuItem privacyIcon;
-
- // urlTextBox is used in onCreate(), onOptionsItemSelected(), and loadUrlFromTextBox().
+ // `urlTextBox` is used in `onCreate()`, `onOptionsItemSelected()`, and `loadUrlFromTextBox()`.
private EditText urlTextBox;
- // adView is used in onCreate() and onConfigurationChanged().
+ // `adView` is used in `onCreate()` and `onConfigurationChanged()`.
private View adView;
+ // `sslErrorHandler` is used in `onCreate()`, `onSslErrorCancel()`, and `onSslErrorProceed`.
+ private SslErrorHandler sslErrorHandler;
+
@Override
// Remove Android Studio's warning about the dangers of using SetJavaScriptEnabled. The whole premise of Privacy Browser is built around an understanding of these dangers.
@SuppressLint("SetJavaScriptEnabled")
// We need to use the SupportActionBar from android.support.v7.app.ActionBar until the minimum API is >= 21.
Toolbar supportAppBar = (Toolbar) findViewById(R.id.appBar);
setSupportActionBar(supportAppBar);
- final ActionBar appBar = getSupportActionBar();
+ appBar = getSupportActionBar();
// This is needed to get rid of the Android Studio warning that appBar might be null.
assert appBar != null;
final FrameLayout fullScreenVideoFrameLayout = (FrameLayout) findViewById(R.id.fullScreenVideoFrameLayout);
// Implement swipe to refresh
- swipeToRefresh = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);
- assert swipeToRefresh != null; //This assert removes the incorrect warning on the following line that swipeToRefresh might be null.
- swipeToRefresh.setColorSchemeResources(R.color.blue);
- swipeToRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
+ swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);
+ swipeRefreshLayout.setColorSchemeResources(R.color.blue_700);
+ swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
mainWebView.reload();
// Listen for touches on the navigation menu.
final NavigationView navigationView = (NavigationView) findViewById(R.id.navigationView);
- assert navigationView != null; // This assert removes the incorrect warning on the following line that navigationView might be null.
navigationView.setNavigationItemSelectedListener(this);
// drawerToggle creates the hamburger icon at the start of the AppBar.
drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, supportAppBar, R.string.open_navigation, R.string.close_navigation);
mainWebView.setWebViewClient(new WebViewClient() {
- // shouldOverrideUrlLoading makes this WebView the default handler for URLs inside the app, so that links are not kicked out to other apps.
+ // `shouldOverrideUrlLoading` makes this `WebView` the default handler for URLs inside the app, so that links are not kicked out to other apps.
+ // We have to use the deprecated `shouldOverrideUrlLoading` until API >= 24.
+ @SuppressWarnings("deprecation")
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
- mainWebView.loadUrl(url);
- return true;
+ // Use an external email program if the link begins with "mailto:".
+ if (url.startsWith("mailto:")) {
+ // We use `ACTION_SENDTO` instead of `ACTION_SEND` so that only email programs are launched.
+ Intent emailIntent = new Intent(Intent.ACTION_SENDTO);
+
+ // Parse the url and set it as the data for the `Intent`.
+ emailIntent.setData(Uri.parse(url));
+
+ // `FLAG_ACTIVITY_NEW_TASK` opens the email program in a new task instead as part of Privacy Browser.
+ emailIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+ // Make it so.
+ startActivity(emailIntent);
+ return true;
+ } else { // Load the URL in Privacy Browser.
+ mainWebView.loadUrl(url, customHeaders);
+ return true;
+ }
}
// Update the URL in urlTextBox when the page starts to load.
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
+ // We need to update `formattedUrlString` at the beginning of the load, so that if the user toggles JavaScript during the load the new website is reloaded.
+ formattedUrlString = url;
+
+ // Display the loading URL is the URL text box.
urlTextBox.setText(url);
}
if (!urlTextBox.hasFocus()) {
urlTextBox.setText(formattedUrlString);
}
+
+ // Store the SSL certificate so it can be accessed from `ViewSslCertificate`.
+ sslCertificate = mainWebView.getCertificate();
+ }
+
+ // Handle SSL Certificate errors.
+ @Override
+ public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
+ // Store `handler` so it can be accesses from `onSslErrorCancel()` and `onSslErrorProceed()`.
+ sslErrorHandler = handler;
+
+ // Display the SSL error `AlertDialog`.
+ DialogFragment sslCertificateErrorDialogFragment = SslCertificateError.displayDialog(error);
+ sslCertificateErrorDialogFragment.show(getFragmentManager(), getResources().getString(R.string.ssl_certificate_error));
}
});
} else {
progressBar.setVisibility(View.GONE);
- //Stop the SwipeToRefresh indicator if it is running
- swipeToRefresh.setRefreshing(false);
+ //Stop the `SwipeToRefresh` indicator if it is running
+ swipeRefreshLayout.setRefreshing(false);
}
}
appBar.hide();
// Show the fullScreenVideoFrameLayout.
- assert fullScreenVideoFrameLayout != null; //This assert removes the incorrect warning on the following line that fullScreenVideoFrameLayout might be null.
fullScreenVideoFrameLayout.addView(view);
fullScreenVideoFrameLayout.setVisibility(View.VISIBLE);
BannerAd.showAd(adView);
// Hide the fullScreenVideoFrameLayout.
- assert fullScreenVideoFrameLayout != null; //This assert removes the incorrect warning on the following line that fullScreenVideoFrameLayout might be null.
fullScreenVideoFrameLayout.removeAllViews();
fullScreenVideoFrameLayout.setVisibility(View.GONE);
}
// Allow the downloading of files.
mainWebView.setDownloadListener(new DownloadListener() {
- // Launch the Android download manager when a link leads to a download.
@Override
public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
- DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
- DownloadManager.Request requestUri = new DownloadManager.Request(Uri.parse(url));
-
- // Add the URL as the description for the download.
- requestUri.setDescription(url);
-
- // Show the download notification after the download is completed.
- requestUri.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
-
- // Initiate the download and display a Snackbar.
- downloadManager.enqueue(requestUri);
- Snackbar.make(findViewById(R.id.mainWebView), R.string.download_started, Snackbar.LENGTH_SHORT).show();
+ // Show the `DownloadFile` `AlertDialog` and name this instance `@string/download`.
+ DialogFragment downloadFileDialogFragment = DownloadFile.fromUrl(url, contentDisposition, contentLength);
+ downloadFileDialogFragment.show(getFragmentManager(), getResources().getString(R.string.download));
}
});
// Hide zoom controls.
mainWebView.getSettings().setDisplayZoomControls(false);
-
- // Initialize the default preference values the first time the program is run.
- PreferenceManager.setDefaultValues(this, R.xml.preferences, false);
-
- // Get the shared preference values.
- SharedPreferences savedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
-
- // Set JavaScript initial status. The default value is false.
- javaScriptEnabled = savedPreferences.getBoolean("javascript_enabled", false);
- mainWebView.getSettings().setJavaScriptEnabled(javaScriptEnabled);
-
// Initialize cookieManager.
cookieManager = CookieManager.getInstance();
- // Set cookies initial status. The default value is false.
- firstPartyCookiesEnabled = savedPreferences.getBoolean("first_party_cookies_enabled", false);
- cookieManager.setAcceptCookie(firstPartyCookiesEnabled);
-
- // Set third-party cookies initial status if API >= 21. The default value is false.
- if (Build.VERSION.SDK_INT >= 21) {
- thirdPartyCookiesEnabled = savedPreferences.getBoolean("third_party_cookies_enabled", false);
- cookieManager.setAcceptThirdPartyCookies(mainWebView, thirdPartyCookiesEnabled);
- }
+ // 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", "");
- // Set DOM storage initial status. The default value is false.
- domStorageEnabled = savedPreferences.getBoolean("dom_storage_enabled", false);
- mainWebView.getSettings().setDomStorageEnabled(domStorageEnabled);
-
- // Set the saved form data initial status. The default is false.
- saveFormDataEnabled = savedPreferences.getBoolean("save_form_data_enabled", false);
- mainWebView.getSettings().setSaveFormData(saveFormDataEnabled);
-
- // Set the user agent initial status.
- String userAgentString = savedPreferences.getString("user_agent", "Default user agent");
- switch (userAgentString) {
- case "Default user agent":
- // Do nothing.
- break;
-
- case "Custom user agent":
- // Set the custom user agent on mainWebView, The default is "PrivacyBrowser/1.0".
- mainWebView.getSettings().setUserAgentString(savedPreferences.getString("custom_user_agent", "PrivacyBrowser/1.0"));
- break;
-
- default:
- // Set the selected user agent on mainWebView. The default is "PrivacyBrowser/1.0".
- mainWebView.getSettings().setUserAgentString(savedPreferences.getString("user_agent", "PrivacyBrowser/1.0"));
- break;
- }
-
- // Set the initial string for JavaScript disabled search.
- if (savedPreferences.getString("javascript_disabled_search", "https://duckduckgo.com/html/?q=").equals("Custom URL")) {
- // Get the custom URL string. The default is "".
- javaScriptDisabledSearchURL = savedPreferences.getString("javascript_disabled_search_custom_url", "");
- } else {
- // Use the string from javascript_disabled_search.
- javaScriptDisabledSearchURL = savedPreferences.getString("javascript_disabled_search", "https://duckduckgo.com/html/?q=");
- }
-
- // Set the initial string for JavaScript enabled search.
- if (savedPreferences.getString("javascript_enabled_search", "https://duckduckgo.com/?q=").equals("Custom URL")) {
- // Get the custom URL string. The default is "".
- javaScriptEnabledSearchURL = savedPreferences.getString("javascript_enabled_search_custom_url", "");
- } else {
- // Use the string from javascript_enabled_search.
- javaScriptEnabledSearchURL = savedPreferences.getString("javascript_enabled_search", "https://duckduckgo.com/?q=");
- }
-
-
- // Set homepage initial status. The default value is "https://www.duckduckgo.com".
- homepage = savedPreferences.getString("homepage", "https://www.duckduckgo.com");
-
- // Set swipe to refresh initial status. The default is true.
- swipeToRefreshEnabled = savedPreferences.getBoolean("swipe_to_refresh_enabled", true);
- swipeToRefresh.setEnabled(swipeToRefreshEnabled);
+ // Initialize the default preference values the first time the program is run.
+ PreferenceManager.setDefaultValues(this, R.xml.preferences, false);
+ // Apply the settings from the shared preferences.
+ applySettings();
// Get the intent information that started the app.
final Intent intent = getIntent();
}
// Load the initial website.
- mainWebView.loadUrl(formattedUrlString);
+ mainWebView.loadUrl(formattedUrlString, customHeaders);
+
+ // If the favorite icon is null, load the default.
+ if (favoriteIcon == null) {
+ // We have to use `ContextCompat` until API >= 21.
+ Drawable favoriteIconDrawable = ContextCompat.getDrawable(getApplicationContext(), R.drawable.world);
+ BitmapDrawable favoriteIconBitmapDrawable = (BitmapDrawable) favoriteIconDrawable;
+ favoriteIcon = favoriteIconBitmapDrawable.getBitmap();
+ }
// Initialize AdView for the free flavor and request an ad. If this is not the free flavor BannerAd.requestAd() does nothing.
adView = findViewById(R.id.adView);
@Override
protected void onNewIntent(Intent intent) {
- // Sets the new intent as the activity intent, so that any future getIntent()s pick up this one instead of creating a new activity.
+ // Sets the new intent as the activity intent, so that any future `getIntent()`s pick up this one instead of creating a new activity.
setIntent(intent);
if (intent.getData() != null) {
}
// Load the website.
- mainWebView.loadUrl(formattedUrlString);
+ mainWebView.loadUrl(formattedUrlString, customHeaders);
// Clear the keyboard if displayed and remove the focus on the urlTextBar if it has it.
mainWebView.requestFocus();
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.webview_options_menu, menu);
- // Set mainMenu so it can be used by onOptionsItemSelected.
+ // Set mainMenu so it can be used by `onOptionsItemSelected()` and `updatePrivacyIcons`.
mainMenu = menu;
- // Initialize privacyIcon
- privacyIcon = menu.findItem(R.id.toggleJavaScript);
+ // Set the initial status of the privacy icons.
+ updatePrivacyIcons();
- // Get MenuItems for checkable menu items.
+ // Get handles for the menu items.
MenuItem toggleFirstPartyCookies = menu.findItem(R.id.toggleFirstPartyCookies);
MenuItem toggleThirdPartyCookies = menu.findItem(R.id.toggleThirdPartyCookies);
MenuItem toggleDomStorage = menu.findItem(R.id.toggleDomStorage);
MenuItem toggleSaveFormData = menu.findItem(R.id.toggleSaveFormData);
- // Set the initial status of the privacy icon.
- updatePrivacyIcon();
-
- // Set the initial status of the menu item checkboxes.
- toggleFirstPartyCookies.setChecked(firstPartyCookiesEnabled);
- toggleThirdPartyCookies.setChecked(thirdPartyCookiesEnabled);
- toggleDomStorage.setChecked(domStorageEnabled);
- toggleSaveFormData.setChecked(saveFormDataEnabled);
+ // Only display third-Party Cookies if SDK >= 21
+ toggleThirdPartyCookies.setVisible(Build.VERSION.SDK_INT >= 21);
+
+ // Get the shared preference values. `this` references the current context.
+ SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+
+ // Set the status of the additional app bar icons. The default is `false`.
+ if (sharedPreferences.getBoolean("display_additional_app_bar_icons", false)) {
+ toggleFirstPartyCookies.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
+ toggleDomStorage.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
+ toggleSaveFormData.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
+ } else { //Do not display the additional icons.
+ toggleFirstPartyCookies.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
+ toggleDomStorage.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
+ toggleSaveFormData.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
+ }
return true;
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
- // Only enable Third-Party Cookies if SDK >= 21 and First-Party Cookies are enabled.
+ // Get handles for the menu items.
+ MenuItem toggleFirstPartyCookies = menu.findItem(R.id.toggleFirstPartyCookies);
MenuItem toggleThirdPartyCookies = menu.findItem(R.id.toggleThirdPartyCookies);
- if ((Build.VERSION.SDK_INT >= 21) && firstPartyCookiesEnabled) {
- toggleThirdPartyCookies.setEnabled(true);
- } else {
- toggleThirdPartyCookies.setEnabled(false);
- }
+ MenuItem toggleDomStorage = menu.findItem(R.id.toggleDomStorage);
+ MenuItem toggleSaveFormData = menu.findItem(R.id.toggleSaveFormData);
+ MenuItem clearCookies = menu.findItem(R.id.clearCookies);
+ MenuItem clearFormData = menu.findItem(R.id.clearFormData);
+ MenuItem refreshMenuItem = menu.findItem(R.id.refresh);
+
+ // Set the status of the menu item checkboxes.
+ toggleFirstPartyCookies.setChecked(firstPartyCookiesEnabled);
+ toggleThirdPartyCookies.setChecked(thirdPartyCookiesEnabled);
+ toggleDomStorage.setChecked(domStorageEnabled);
+ toggleSaveFormData.setChecked(saveFormDataEnabled);
+
+ // Enable third-party cookies if first-party cookies are enabled.
+ toggleThirdPartyCookies.setEnabled(firstPartyCookiesEnabled);
// Enable DOM Storage if JavaScript is enabled.
- MenuItem toggleDomStorage = menu.findItem(R.id.toggleDomStorage);
toggleDomStorage.setEnabled(javaScriptEnabled);
// Enable Clear Cookies if there are any.
- MenuItem clearCookies = menu.findItem(R.id.clearCookies);
clearCookies.setEnabled(cookieManager.hasCookies());
// Enable Clear Form Data is there is any.
- MenuItem clearFormData = menu.findItem(R.id.clearFormData);
WebViewDatabase mainWebViewDatabase = WebViewDatabase.getInstance(this);
clearFormData.setEnabled(mainWebViewDatabase.hasFormData());
+ // Only show `Refresh` if `swipeToRefresh` is disabled.
+ refreshMenuItem.setVisible(!swipeToRefreshEnabled);
+
+ // Initialize font size variables.
+ int fontSize = mainWebView.getSettings().getTextZoom();
+ String fontSizeTitle;
+ MenuItem selectedFontSizeMenuItem;
+
+ // Prepare the font size title and current size menu item.
+ switch (fontSize) {
+ case 50:
+ fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.fifty_percent);
+ selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeFiftyPercent);
+ break;
+
+ case 75:
+ fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.seventy_five_percent);
+ selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeSeventyFivePercent);
+ break;
+
+ case 100:
+ fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.one_hundred_percent);
+ selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeOneHundredPercent);
+ break;
+
+ case 125:
+ fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.one_hundred_twenty_five_percent);
+ selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeOneHundredTwentyFivePercent);
+ break;
+
+ case 150:
+ fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.one_hundred_fifty_percent);
+ selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeOneHundredFiftyPercent);
+ break;
+
+ case 175:
+ fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.one_hundred_seventy_five_percent);
+ selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeOneHundredSeventyFivePercent);
+ break;
+
+ case 200:
+ fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.two_hundred_percent);
+ selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeTwoHundredPercent);
+ break;
+
+ default:
+ fontSizeTitle = getResources().getString(R.string.font_size) + " - " + getResources().getString(R.string.one_hundred_percent);
+ selectedFontSizeMenuItem = menu.findItem(R.id.fontSizeOneHundredPercent);
+ break;
+ }
+
+ // Set the font size title and select the current size menu item.
+ MenuItem fontSizeMenuItem = menu.findItem(R.id.fontSize);
+ fontSizeMenuItem.setTitle(fontSizeTitle);
+ selectedFontSizeMenuItem.setChecked(true);
+
// Run all the other default commands.
super.onPrepareOptionsMenu(menu);
mainWebView.getSettings().setJavaScriptEnabled(javaScriptEnabled);
// Update the privacy icon.
- updatePrivacyIcon();
+ updatePrivacyIcons();
- // Display a Snackbar.
- if (javaScriptEnabled) {
+ // Display a `Snackbar`.
+ if (javaScriptEnabled) { // JavaScrip is enabled.
Snackbar.make(findViewById(R.id.mainWebView), R.string.javascript_enabled, Snackbar.LENGTH_SHORT).show();
- } else {
- if (firstPartyCookiesEnabled) {
- Snackbar.make(findViewById(R.id.mainWebView), R.string.javascript_disabled, Snackbar.LENGTH_SHORT).show();
- } else {
- Snackbar.make(findViewById(R.id.mainWebView), R.string.privacy_mode, Snackbar.LENGTH_SHORT).show();
- }
+ } else if (firstPartyCookiesEnabled) { // JavaScript is disabled, but first-party cookies are enabled.
+ Snackbar.make(findViewById(R.id.mainWebView), R.string.javascript_disabled, Snackbar.LENGTH_SHORT).show();
+ } else { // Privacy mode.
+ Snackbar.make(findViewById(R.id.mainWebView), R.string.privacy_mode, Snackbar.LENGTH_SHORT).show();
}
// Reload the WebView.
cookieManager.setAcceptCookie(firstPartyCookiesEnabled);
// Update the privacy icon.
- updatePrivacyIcon();
+ updatePrivacyIcons();
+
+ // Display a `Snackbar`.
+ if (firstPartyCookiesEnabled) { // First-party cookies are enabled.
+ Snackbar.make(findViewById(R.id.mainWebView), R.string.first_party_cookies_enabled, Snackbar.LENGTH_SHORT).show();
+ } else if (javaScriptEnabled){ // JavaScript is still enabled.
+ Snackbar.make(findViewById(R.id.mainWebView), R.string.first_party_cookies_disabled, Snackbar.LENGTH_SHORT).show();
+ } else { // Privacy mode.
+ Snackbar.make(findViewById(R.id.mainWebView), R.string.privacy_mode, Snackbar.LENGTH_SHORT).show();
+ }
// Reload the WebView.
mainWebView.reload();
// Apply the new cookie status.
cookieManager.setAcceptThirdPartyCookies(mainWebView, thirdPartyCookiesEnabled);
+ // Display a `Snackbar`.
+ if (thirdPartyCookiesEnabled) {
+ Snackbar.make(findViewById(R.id.mainWebView), R.string.third_party_cookies_enabled, Snackbar.LENGTH_SHORT).show();
+ } else {
+ Snackbar.make(findViewById(R.id.mainWebView), R.string.third_party_cookies_disabled, Snackbar.LENGTH_SHORT).show();
+ }
+
// Reload the WebView.
mainWebView.reload();
} // Else do nothing because SDK < 21.
// Apply the new DOM Storage status.
mainWebView.getSettings().setDomStorageEnabled(domStorageEnabled);
+ // Display a `Snackbar`.
+ if (domStorageEnabled) {
+ Snackbar.make(findViewById(R.id.mainWebView), R.string.dom_storage_enabled, Snackbar.LENGTH_SHORT).show();
+ } else {
+ Snackbar.make(findViewById(R.id.mainWebView), R.string.dom_storage_disabled, Snackbar.LENGTH_SHORT).show();
+ }
+
// Reload the WebView.
mainWebView.reload();
return true;
// Apply the new form data status.
mainWebView.getSettings().setSaveFormData(saveFormDataEnabled);
+ // Display a `Snackbar`.
+ if (saveFormDataEnabled) {
+ Snackbar.make(findViewById(R.id.mainWebView), R.string.form_data_enabled, Snackbar.LENGTH_SHORT).show();
+ } else {
+ Snackbar.make(findViewById(R.id.mainWebView), R.string.form_data_disabled, Snackbar.LENGTH_SHORT).show();
+ }
+
// Reload the WebView.
mainWebView.reload();
return true;
mainWebView.reload();
return true;
+ case R.id.fontSizeFiftyPercent:
+ mainWebView.getSettings().setTextZoom(50);
+ return true;
+
+ case R.id.fontSizeSeventyFivePercent:
+ mainWebView.getSettings().setTextZoom(75);
+ return true;
+
+ case R.id.fontSizeOneHundredPercent:
+ mainWebView.getSettings().setTextZoom(100);
+ return true;
+
+ case R.id.fontSizeOneHundredTwentyFivePercent:
+ mainWebView.getSettings().setTextZoom(125);
+ return true;
+
+ case R.id.fontSizeOneHundredFiftyPercent:
+ mainWebView.getSettings().setTextZoom(150);
+ return true;
+
+ case R.id.fontSizeOneHundredSeventyFivePercent:
+ mainWebView.getSettings().setTextZoom(175);
+ return true;
+
+ case R.id.fontSizeTwoHundredPercent:
+ mainWebView.getSettings().setTextZoom(200);
+ return true;
+
case R.id.share:
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
return true;
case R.id.addToHomescreen:
- // Show the CreateHomeScreenShortcut AlertDialog and name this instance "@string/create_shortcut".
+ // Show the `CreateHomeScreenShortcut` `AlertDialog` and name this instance `@string/create_shortcut`.
DialogFragment createHomeScreenShortcutDialogFragment = new CreateHomeScreenShortcut();
- createHomeScreenShortcutDialogFragment.show(getFragmentManager(), "@string/create_shortcut");
+ createHomeScreenShortcutDialogFragment.show(getFragmentManager(), getResources().getString(R.string.create_shortcut));
+
+ //Everything else will be handled by `CreateHomeScreenShortcut` and the associated listener below.
+ return true;
+
+ case R.id.print:
+ // Get a `PrintManager` instance.
+ PrintManager printManager = (PrintManager) getSystemService(Context.PRINT_SERVICE);
- //Everything else will be handled by CreateHomeScreenShortcut and the associated listeners below.
+ // Convert `mainWebView` to `printDocumentAdapter`.
+ PrintDocumentAdapter printDocumentAdapter = mainWebView.createPrintDocumentAdapter();
+
+ // Print the document. The print attributes are `null`.
+ printManager.print(getResources().getString(R.string.privacy_browser_web_page), printDocumentAdapter, null);
return true;
case R.id.refresh:
}
}
- @Override
// removeAllCookies is deprecated, but it is required for API < 21.
@SuppressWarnings("deprecation")
- public boolean onNavigationItemSelected(MenuItem menuItem) {
+ @Override
+ public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
int menuItemId = menuItem.getItemId();
switch (menuItemId) {
case R.id.home:
- mainWebView.loadUrl(homepage);
+ mainWebView.loadUrl(homepage, customHeaders);
break;
case R.id.back:
break;
case R.id.settings:
- // Launch SettingsActivity.
+ // Launch `SettingsActivity`.
Intent settingsIntent = new Intent(this, SettingsActivity.class);
startActivity(settingsIntent);
break;
case R.id.guide:
- // Launch GuideActivity.
+ // Launch `GuideActivity`.
Intent guideIntent = new Intent(this, GuideActivity.class);
startActivity(guideIntent);
break;
case R.id.about:
- // Launch AboutActivity.
+ // Launch `AboutActivity`.
Intent aboutIntent = new Intent(this, AboutActivity.class);
startActivity(aboutIntent);
break;
// Clear the back/forward history.
mainWebView.clearHistory();
+ // Clear any SSL certificate preferences.
+ mainWebView.clearSslPreferences();
+
+ // Clear `formattedUrlString`.
formattedUrlString = null;
+ // Clear `customHeaders`.
+ customHeaders.clear();
+
// Destroy the internal state of the webview.
mainWebView.destroy();
// Reinitialize the adView variable, as the View will have been removed and re-added in the free flavor by BannerAd.reloadAfterRotate().
adView = findViewById(R.id.adView);
- }
- @Override
- public void onCreateHomeScreenShortcutCancel(DialogFragment dialogFragment) {
- // Do nothing because the user selected "Cancel".
+ // `invalidateOptionsMenu` should recalculate the number of action buttons from the menu to display on the app bar, but it doesn't because of the this bug: https://code.google.com/p/android/issues/detail?id=20493#c8
+ invalidateOptionsMenu();
}
@Override
- public void onCreateHomeScreenShortcutCreate(DialogFragment dialogFragment) {
+ public void onCreateHomeScreenShortcut(DialogFragment dialogFragment) {
// Get shortcutNameEditText from the alert dialog.
EditText shortcutNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.shortcut_name_edittext);
sendBroadcast(placeBookmarkShortcut);
}
+ @Override
+ public void onDownloadFile(DialogFragment dialogFragment, String downloadUrl) {
+ DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
+ DownloadManager.Request downloadRequest = new DownloadManager.Request(Uri.parse(downloadUrl));
+
+ // Get the file name from `dialogFragment`.
+ EditText downloadFileNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.download_file_name);
+ String fileName = downloadFileNameEditText.getText().toString();
+
+ // Set the download save in the the `DIRECTORY_DOWNLOADS`using `fileName`.
+ // Once we have `WRITE_EXTERNAL_STORAGE` permissions we can use `setDestinationInExternalPublicDir`.
+ downloadRequest.setDestinationInExternalFilesDir(this, "/", fileName);
+
+ // Allow `MediaScanner` to index the download if it is a media file.
+ downloadRequest.allowScanningByMediaScanner();
+
+ // Add the URL as the description for the download.
+ downloadRequest.setDescription(downloadUrl);
+
+ // Show the download notification after the download is completed.
+ downloadRequest.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
+
+ // Initiate the download and display a Snackbar.
+ downloadManager.enqueue(downloadRequest);
+ }
+
+ public void viewSslCertificate(View view) {
+ // Show the `ViewSslCertificate` `AlertDialog` and name this instance `@string/view_ssl_certificate`.
+ DialogFragment viewSslCertificateDialogFragment = new ViewSslCertificate();
+ viewSslCertificateDialogFragment.show(getFragmentManager(), getResources().getString(R.string.view_ssl_certificate));
+ }
+
+ @Override
+ public void onSslErrorCancel() {
+ sslErrorHandler.cancel();
+ }
+
+ @Override
+ public void onSslErrorProceed() {
+ sslErrorHandler.proceed();
+ }
+
// Override onBackPressed to handle the navigation drawer and mainWebView.
@Override
public void onBackPressed() {
drawerLayout.closeDrawer(GravityCompat.START);
} else {
// Load the previous URL if available.
- assert mainWebView != null; //This assert removes the incorrect warning in Android Studio on the following line that mainWebView might be null.
if (mainWebView.canGoBack()) {
mainWebView.goBack();
} else {
BannerAd.resumeAd(adView);
}
+ @Override
+ public void onRestart() {
+ super.onRestart();
+
+ // Apply the settings from shared preferences, which might have been changed in `SettingsActivity`.
+ applySettings();
+
+ // Update the privacy icons.
+ updatePrivacyIcons();
+
+ }
+
private void loadUrlFromTextBox() throws UnsupportedEncodingException {
// Get the text from urlTextBox and convert it to a string. trim() removes white spaces from the beginning and end of the string.
String unformattedUrlString = urlTextBox.getText().toString().trim();
// Sanitize the search input and convert it to a DuckDuckGo search.
final String encodedUrlString = URLEncoder.encode(unformattedUrlString, "UTF-8");
- // Use the correct search URL based on javaScriptEnabled.
- if (javaScriptEnabled) {
+ // Use the correct search URL.
+ if (javaScriptEnabled) { // JavaScript is enabled.
formattedUrlString = javaScriptEnabledSearchURL + encodedUrlString;
} else { // JavaScript is disabled.
formattedUrlString = javaScriptDisabledSearchURL + encodedUrlString;
}
}
- mainWebView.loadUrl(formattedUrlString);
+ mainWebView.loadUrl(formattedUrlString, customHeaders);
// Hides the keyboard so we can see the webpage.
InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Activity.INPUT_METHOD_SERVICE);
inputMethodManager.hideSoftInputFromWindow(mainWebView.getWindowToken(), 0);
}
- private void updatePrivacyIcon() {
- if (javaScriptEnabled) {
- privacyIcon.setIcon(R.drawable.javascript_enabled);
- } else {
- if (firstPartyCookiesEnabled) {
- privacyIcon.setIcon(R.drawable.warning);
- } else {
- privacyIcon.setIcon(R.drawable.privacy_mode);
+ private void applySettings() {
+ // Get the shared preference values. `this` references the current context.
+ SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+
+ // Store the values from `sharedPreferences` in variables.
+ String userAgentString = sharedPreferences.getString("user_agent", "Default user agent");
+ String customUserAgentString = sharedPreferences.getString("custom_user_agent", "PrivacyBrowser/1.0");
+ String javaScriptDisabledSearchString = sharedPreferences.getString("javascript_disabled_search", "https://duckduckgo.com/html/?q=");
+ String javaScriptDisabledCustomSearchString = sharedPreferences.getString("javascript_disabled_search_custom_url", "");
+ String javaScriptEnabledSearchString = sharedPreferences.getString("javascript_enabled_search", "https://duckduckgo.com/?q=");
+ String javaScriptEnabledCustomSearchString = sharedPreferences.getString("javascript_enabled_search_custom_url", "");
+ String homepageString = sharedPreferences.getString("homepage", "https://www.duckduckgo.com");
+ String defaultFontSizeString = sharedPreferences.getString("default_font_size", "100");
+ swipeToRefreshEnabled = sharedPreferences.getBoolean("swipe_to_refresh_enabled", false);
+ boolean doNotTrackEnabled = sharedPreferences.getBoolean("do_not_track", true);
+ boolean proxyThroughOrbot = sharedPreferences.getBoolean("proxy_through_orbot", false);
+
+ // Because they can be modified on-the-fly by the user, these default settings are only applied when the program first runs.
+ if (javaScriptEnabled == null) { // If `javaScriptEnabled` is null the program is just starting.
+ // Get the values from `sharedPreferences`.
+ javaScriptEnabled = sharedPreferences.getBoolean("javascript_enabled", false);
+ firstPartyCookiesEnabled = sharedPreferences.getBoolean("first_party_cookies_enabled", false);
+ thirdPartyCookiesEnabled = sharedPreferences.getBoolean("third_party_cookies_enabled", false);
+ domStorageEnabled = sharedPreferences.getBoolean("dom_storage_enabled", false);
+ saveFormDataEnabled = sharedPreferences.getBoolean("save_form_data_enabled", false);
+
+ // Apply the default settings.
+ mainWebView.getSettings().setJavaScriptEnabled(javaScriptEnabled);
+ cookieManager.setAcceptCookie(firstPartyCookiesEnabled);
+ mainWebView.getSettings().setDomStorageEnabled(domStorageEnabled);
+ mainWebView.getSettings().setSaveFormData(saveFormDataEnabled);
+ mainWebView.getSettings().setTextZoom(Integer.valueOf(defaultFontSizeString));
+
+ // Set third-party cookies status if API >= 21.
+ if (Build.VERSION.SDK_INT >= 21) {
+ cookieManager.setAcceptThirdPartyCookies(mainWebView, thirdPartyCookiesEnabled);
}
}
+
+ // Apply the other settings from `sharedPreferences`.
+ homepage = homepageString;
+ swipeRefreshLayout.setEnabled(swipeToRefreshEnabled);
+
+ // Set the user agent initial status.
+ switch (userAgentString) {
+ case "Default user agent":
+ // Set the user agent to `""`, which uses the default value.
+ mainWebView.getSettings().setUserAgentString("");
+ break;
+
+ case "Custom user agent":
+ // Set the custom user agent.
+ mainWebView.getSettings().setUserAgentString(customUserAgentString);
+ break;
+
+ default:
+ // Use the selected user agent.
+ mainWebView.getSettings().setUserAgentString(userAgentString);
+ break;
+ }
+
+ // Set JavaScript disabled search.
+ if (javaScriptDisabledSearchString.equals("Custom URL")) { // Get the custom URL string.
+ javaScriptDisabledSearchURL = javaScriptDisabledCustomSearchString;
+ } else { // Use the string from the pre-built list.
+ javaScriptDisabledSearchURL = javaScriptDisabledSearchString;
+ }
+
+ // Set JavaScript enabled search.
+ if (javaScriptEnabledSearchString.equals("Custom URL")) { // Get the custom URL string.
+ javaScriptEnabledSearchURL = javaScriptEnabledCustomSearchString;
+ } else { // Use the string from the pre-built list.
+ javaScriptEnabledSearchURL = javaScriptEnabledSearchString;
+ }
+
+ // Set Do Not Track status.
+ if (doNotTrackEnabled) {
+ customHeaders.put("DNT", "1");
+ } else {
+ customHeaders.remove("DNT");
+ }
+
+ // Set Orbot proxy status.
+ if (proxyThroughOrbot) {
+ // Set the proxy. `this` refers to the current activity where an `AlertDialog` might be displayed.
+ OrbotProxyHelper.setProxy(getApplicationContext(), this, "localhost", "8118");
+ } else { // Reset the proxy to default. The host is `""` and the port is `"0"`.
+ OrbotProxyHelper.setProxy(getApplicationContext(), this, "", "0");
+ }
+ }
+
+ private void updatePrivacyIcons() {
+ // Get handles for the icons.
+ MenuItem privacyIcon = mainMenu.findItem(R.id.toggleJavaScript);
+ MenuItem firstPartyCookiesIcon = mainMenu.findItem(R.id.toggleFirstPartyCookies);
+ MenuItem domStorageIcon = mainMenu.findItem(R.id.toggleDomStorage);
+ MenuItem formDataIcon = mainMenu.findItem(R.id.toggleSaveFormData);
+
+ // Update `privacyIcon`.
+ if (javaScriptEnabled) { // JavaScript is enabled.
+ privacyIcon.setIcon(R.drawable.javascript_enabled);
+ } else if (firstPartyCookiesEnabled) { // JavaScript is disabled but cookies are enabled.
+ privacyIcon.setIcon(R.drawable.warning);
+ } else { // All the dangerous features are disabled.
+ privacyIcon.setIcon(R.drawable.privacy_mode);
+ }
+
+ // Update `firstPartyCookiesIcon`.
+ if (firstPartyCookiesEnabled) { // First-party cookies are enabled.
+ firstPartyCookiesIcon.setIcon(R.drawable.cookies_enabled);
+ } else { // First-party cookies are disabled.
+ firstPartyCookiesIcon.setIcon(R.drawable.cookies_disabled);
+ }
+
+ // Update `domStorageIcon`.
+ if (javaScriptEnabled && domStorageEnabled) { // Both JavaScript and DOM storage are enabled.
+ domStorageIcon.setIcon(R.drawable.dom_storage_enabled);
+ } else if (javaScriptEnabled){ // JavaScript is enabled but DOM storage is disabled.
+ domStorageIcon.setIcon(R.drawable.dom_storage_disabled);
+ } else { // JavaScript is disabled, so DOM storage is ghosted.
+ domStorageIcon.setIcon(R.drawable.dom_storage_ghosted);
+ }
+
+ // Update `formDataIcon`.
+ if (saveFormDataEnabled) { // Form data is enabled.
+ formDataIcon.setIcon(R.drawable.form_data_enabled);
+ } else { // Form data is disabled.
+ formDataIcon.setIcon(R.drawable.form_data_disabled);
+ }
+
+ // `invalidateOptionsMenu` calls `onPrepareOptionsMenu()` and redraws the icons in the `AppBar`.
+ // `this` references the current activity.
+ ActivityCompat.invalidateOptionsMenu(this);
}
}