Fixed a number of lint warnings

app/src/main/java/acr/browser/lightning/dialog/BookmarksDialogBuilder.java

@@ -49,7 +49,7 @@ public class BookmarksDialogBuilder {
     public void showLongPressedDialogForUrl(final Context context, final String url) {
         final HistoryItem item;
         if (url.startsWith(Constants.FILE) && url.endsWith(Constants.BOOKMARKS_FILENAME)) {
-            // TODO this in so many ways is wrong, probably we need to redesign the folder mechanism
+            // TODO hacky, make a better bookmark mechanism in the future
             final Uri uri = Uri.parse(url);
             final String filename = uri.getLastPathSegment();
             final String folderTitle = filename.substring(0, filename.length() - Constants.BOOKMARKS_FILENAME.length() - 1);
@@ -125,7 +125,6 @@ public class BookmarksDialogBuilder {
                     @Override
                     public void onClick(DialogInterface dialog, int which) {
                         HistoryItem editedItem = new HistoryItem();
-                        String currentFolder = item.getFolder();
                         editedItem.setTitle(getTitle.getText().toString());
                         editedItem.setUrl(getUrl.getText().toString());
                         editedItem.setUrl(getUrl.getText().toString());

app/src/main/java/acr/browser/lightning/fragment/BookmarkSettingsFragment.java

@@ -33,7 +33,6 @@ public class BookmarkSettingsFragment extends PreferenceFragment implements Pref
     @Inject BookmarkManager mBookmarkManager;
     private File[] mFileList;
     private String[] mFileNameList;
-    private PermissionsManager mPermissionsManager;
     private static final String[] REQUIRED_PERMISSIONS = new String[]{
             Manifest.permission.READ_EXTERNAL_STORAGE,
             Manifest.permission.WRITE_EXTERNAL_STORAGE
@@ -51,9 +50,9 @@ public class BookmarkSettingsFragment extends PreferenceFragment implements Pref
 
         initPrefs();
 
-        mPermissionsManager = PermissionsManager.getInstance();
+        PermissionsManager permissionsManager = PermissionsManager.getInstance();
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
-            mPermissionsManager.requestPermissionsIfNecessary(getActivity(), REQUIRED_PERMISSIONS);
+            permissionsManager.requestPermissionsIfNecessary(getActivity(), REQUIRED_PERMISSIONS);
         }
     }
 

app/src/main/java/acr/browser/lightning/fragment/BookmarksFragment.java

@@ -70,7 +70,7 @@ public class BookmarksFragment extends Fragment implements View.OnClickListener,
     private Bitmap mWebpageBitmap, mFolderBitmap;
 
     // Bookmarks
-    private List<HistoryItem> mBookmarks = new ArrayList<>();
+    private final List<HistoryItem> mBookmarks = new ArrayList<>();
 
     // Views
     private ListView mBookmarksListView;
@@ -222,7 +222,6 @@ public class BookmarksFragment extends Fragment implements View.OnClickListener,
 
     @Subscribe
     public void bookmarkDeleted(final BookmarkEvents.Deleted event) {
-        final HistoryItem item = event.item;
         // final int size = mBookmarks.size();
         mBookmarks.remove(event.item);
         // assert mBookmarks.size() < size;

app/src/main/java/acr/browser/lightning/fragment/GeneralSettingsFragment.java

@@ -228,7 +228,6 @@ public class GeneralSettingsFragment extends PreferenceFragment implements Prefe
     }
 
     private void setProxyChoice(int choice) {
-        ProxyUtils utils = ProxyUtils.getInstance(mActivity);
         switch (choice) {
             case Constants.PROXY_ORBOT:
                 choice = ProxyUtils.setProxyChoice(choice, mActivity);

app/src/main/java/acr/browser/lightning/object/SearchAdapter.java

@@ -402,7 +402,7 @@ public class SearchAdapter extends BaseAdapter implements Filterable {
         return connectivity.getActiveNetworkInfo();
     }
 
-    //TODO Write simpler algorithm
+// The old suggestions algorithm, leaving here just for reference
 //    private List<HistoryItem> getSuggestions() {
 //        List<HistoryItem> filteredList = new ArrayList<>();
 //

app/src/main/java/acr/browser/lightning/reading/ArticleTextExtractor.java

@@ -736,8 +736,7 @@ public class ArticleTextExtractor {
     }
 
     private static String extractType(Document doc) {
-        String type = SHelper.innerTrim(doc.select("head meta[property=og:type]").attr("content"));
-        return type;
+        return SHelper.innerTrim(doc.select("head meta[property=og:type]").attr("content"));
     }
 
     private static String extractSitename(Document doc) {

app/src/main/java/acr/browser/lightning/utils/PermissionsManager.java

@@ -16,7 +16,7 @@ import java.util.Set;
 public class PermissionsManager {
 
     private static PermissionsManager mInstance;
-    private Set<String> mPendingRequests = new HashSet<>();
+    private final Set<String> mPendingRequests = new HashSet<>();
 
     public static PermissionsManager getInstance() {
         if (mInstance == null) {

app/src/main/java/acr/browser/lightning/view/LightningView.java

@@ -72,8 +72,8 @@ public class LightningView {
     private final Title mTitle;
     private WebView mWebView;
     private final boolean mIsIncognitoTab;
-    private BrowserController mBrowserController;
-    private GestureDetector mGestureDetector;
+    private final BrowserController mBrowserController;
+    private final GestureDetector mGestureDetector;
     private final Activity mActivity;
     private static String mHomepage;
     private static String mDefaultUserAgent;
@@ -81,7 +81,7 @@ public class LightningView {
     private final Bitmap mWebpageBitmap;
     private static PreferenceManager mPreferences;
     private final AdBlock mAdBlock;
-    private IntentUtils mIntentUtils;
+    private final IntentUtils mIntentUtils;
     private final Paint mPaint = new Paint();
     private boolean isForegroundTab;
     private boolean mTextReflow = false;