Fixed an issue caused by symlinks not handled correctly.

app/src/main/java/com/kabouzeid/gramophone/adapter/SongFileAdapter.java

@@ -21,13 +21,14 @@ import com.kabouzeid.gramophone.adapter.base.MediaEntryViewHolder;
 import com.kabouzeid.gramophone.glide.audiocover.AudioFileCover;
 import com.kabouzeid.gramophone.interfaces.CabHolder;
 import com.kabouzeid.gramophone.util.Util;
+import com.simplecityapps.recyclerview_fastscroll.views.FastScrollRecyclerView;
 
 import java.io.File;
 import java.text.DecimalFormat;
 import java.util.ArrayList;
 import java.util.List;
 
-public class SongFileAdapter extends AbsMultiSelectAdapter<SongFileAdapter.ViewHolder, File> {
+public class SongFileAdapter extends AbsMultiSelectAdapter<SongFileAdapter.ViewHolder, File> implements FastScrollRecyclerView.SectionedAdapter {
 
     private static final int FILE = 0;
     private static final int FOLDER = 1;
@@ -114,7 +115,7 @@ public class SongFileAdapter extends AbsMultiSelectAdapter<SongFileAdapter.ViewH
             holder.image.setColorFilter(iconColor, PorterDuff.Mode.SRC_IN);
             holder.image.setImageResource(R.drawable.ic_folder_white_24dp);
         } else {
-            Drawable error = Util.getTintedDrawable(activity, R.drawable.ic_music_note_white_24dp, iconColor);
+            Drawable error = Util.getTintedDrawable(activity, R.drawable.ic_file_music_white_24dp, iconColor);
             Glide.with(activity)
                     .load(new AudioFileCover(file.getPath()))
                     .diskCacheStrategy(DiskCacheStrategy.NONE)
@@ -164,6 +165,12 @@ public class SongFileAdapter extends AbsMultiSelectAdapter<SongFileAdapter.ViewH
         }
     }
 
+    @NonNull
+    @Override
+    public String getSectionName(int position) {
+        return String.valueOf(dataSet.get(position).getName().charAt(0)).toUpperCase();
+    }
+
     public class ViewHolder extends MediaEntryViewHolder {
 
         public ViewHolder(View itemView) {

app/src/main/java/com/kabouzeid/gramophone/ui/fragments/FolderFragment.java

@@ -42,6 +42,7 @@ import com.simplecityapps.recyclerview_fastscroll.views.FastScrollRecyclerView;
 
 import java.io.File;
 import java.io.FileFilter;
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
@@ -51,7 +52,6 @@ import java.util.List;
 
 import butterknife.Bind;
 import butterknife.ButterKnife;
-import hugo.weaving.DebugLog;
 
 public class FolderFragment extends AbsMainActivityFragment implements MainActivity.MainActivityFragmentCallbacks, CabHolder, BreadCrumbLayout.SelectionCallback, SongFileAdapter.Callbacks, AppBarLayout.OnOffsetChangedListener {
     public static final String TAG = FolderFragment.class.getSimpleName();
@@ -90,7 +90,6 @@ public class FolderFragment extends AbsMainActivityFragment implements MainActiv
         return frag;
     }
 
-    @DebugLog
     public void setCrumb(BreadCrumbLayout.Crumb crumb, boolean addToHistory) {
         saveScrollPosition();
         updateAdapter(crumb.getFile());
@@ -153,7 +152,7 @@ public class FolderFragment extends AbsMainActivityFragment implements MainActiv
         setUpRecyclerView();
 
         if (savedInstanceState == null) {
-            setCrumb(new BreadCrumbLayout.Crumb((File) getArguments().getSerializable(PATH)), true);
+            setCrumb(new BreadCrumbLayout.Crumb(tryGetCanonicalFile((File) getArguments().getSerializable(PATH))), true);
         } else {
             breadCrumbs.restoreFromStateWrapper((BreadCrumbLayout.SavedStateWrapper) savedInstanceState.getParcelable(CRUMBS));
             setCrumb(breadCrumbs.getCrumb(breadCrumbs.getActiveIndex()), true);
@@ -234,8 +233,8 @@ public class FolderFragment extends AbsMainActivityFragment implements MainActiv
     @Override
     public boolean onOptionsItemSelected(@NonNull MenuItem item) {
         switch (item.getItemId()) {
-            case R.id.action_go_to_standard_folder:
+            case R.id.action_go_to_music_folder:
-                setCrumb(new BreadCrumbLayout.Crumb(getDefaultStartFolder()), true);
+                setCrumb(new BreadCrumbLayout.Crumb(tryGetCanonicalFile(getDefaultStartFolder())), true);
                 return true;
         }
         return super.onOptionsItemSelected(item);
@@ -262,6 +261,7 @@ public class FolderFragment extends AbsMainActivityFragment implements MainActiv
 
     @Override
     public void onFileSelected(File file) {
+        file = tryGetCanonicalFile(file); // important as we compare the path value later
         if (file.isDirectory()) {
             setCrumb(new BreadCrumbLayout.Crumb(file), true);
         } else {
@@ -274,7 +274,7 @@ public class FolderFragment extends AbsMainActivityFragment implements MainActiv
 
             int startIndex = -1;
             for (int i = 0; i < songs.size(); i++) {
-                if (file.getPath().equals(songs.get(i).data)) {
+                if (file.getPath().equals(songs.get(i).data)) { // path is already canonical here
                     startIndex = i;
                     break;
                 }
@@ -295,8 +295,13 @@ public class FolderFragment extends AbsMainActivityFragment implements MainActiv
         if (files != null) {
             paths = new String[files.size()];
             for (int i = 0; i < files.size(); i++) {
+                try {
+                    paths[i] = files.get(i).getCanonicalPath(); // canonical path is important here because we want to compare the path with the media store entry later
+                } catch (IOException e) {
+                    e.printStackTrace();
                     paths[i] = files.get(i).getPath();
                 }
+            }
 
             if (files.size() > 0 && files.size() < 999) { // 999 is the max amount Androids SQL implementation can handle.
                 selection = AudioColumns.DATA + " IN (" + makePlaceholders(files.size()) + ")";
@@ -402,15 +407,28 @@ public class FolderFragment extends AbsMainActivityFragment implements MainActiv
         }
     }
 
+    Comparator<File> fileComparator = new Comparator<File>() {
+        @Override
+        public int compare(File lhs, File rhs) {
+            if (lhs.isDirectory() && !rhs.isDirectory()) {
+                return -1;
+            } else if (!lhs.isDirectory() && rhs.isDirectory()) {
+                return 1;
+            } else {
+                return lhs.getName().compareToIgnoreCase(rhs.getName());
+            }
+        }
+    };
+
     private List<File> sort(List<File> files) {
-        Collections.sort(files, new FileSorter());
+        Collections.sort(files, fileComparator);
         return files;
     }
 
     FileFilter audioFileFilter = new FileFilter() {
         @Override
-        public boolean accept(File pathname) {
+        public boolean accept(File file) {
-            return pathname.isDirectory() || fileIsMimeType(pathname, "audio/*", MimeTypeMap.getSingleton());
+            return !file.isHidden() && (file.isDirectory() || fileIsMimeType(file, "audio/*", MimeTypeMap.getSingleton()));
         }
     };
 
@@ -418,7 +436,7 @@ public class FolderFragment extends AbsMainActivityFragment implements MainActiv
         return audioFileFilter;
     }
 
-    static boolean fileIsMimeType(File file, String mimeType, MimeTypeMap mimeTypeMap) {
+    private static boolean fileIsMimeType(File file, String mimeType, MimeTypeMap mimeTypeMap) {
         if (mimeType == null || mimeType.equals("*/*")) {
             return true;
         } else {
@@ -459,16 +477,12 @@ public class FolderFragment extends AbsMainActivityFragment implements MainActiv
         return false;
     }
 
-    private static class FileSorter implements Comparator<File> {
+    private static File tryGetCanonicalFile(File file) {
-        @Override
+        try {
-        public int compare(File lhs, File rhs) {
+            return file.getCanonicalFile();
-            if (lhs.isDirectory() && !rhs.isDirectory()) {
+        } catch (IOException e) {
-                return -1;
+            e.printStackTrace();
-            } else if (!lhs.isDirectory() && rhs.isDirectory()) {
+            return file;
-                return 1;
-            } else {
-                return lhs.getName().compareToIgnoreCase(rhs.getName());
-            }
         }
     }
 }

app/src/main/res/drawable/ic_file_music_white_24dp.xml

@@ -0,0 +1,10 @@
+<!-- drawable/ic_file_music_white_24dpsic_white_24dp.xml -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:width="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M13,9H18.5L13,3.5V9M6,2H14L20,8V20A2,2 0 0,1 18,22H6C4.89,22 4,21.1 4,20V4C4,2.89 4.89,2 6,2M9,16A2,2 0 0,0 7,18A2,2 0 0,0 9,20A2,2 0 0,0 11,18V13H14V11H10V16.27C9.71,16.1 9.36,16 9,16Z" />
+</vector>

app/src/main/res/drawable/ic_folder_special_white_24dp.xml

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:height="24dp"
-    android:viewportHeight="24.0"
-    android:viewportWidth="24.0"
-    android:width="24dp">
-    <path
-        android:fillColor="#FFFFFF"
-        android:pathData="M20,6h-8l-2,-2L4,4c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h16c1.1,0 2,-0.9 2,-2L22,8c0,-1.1 -0.9,-2 -2,-2zM17.94,17L15,15.28 12.06,17l0.78,-3.33 -2.59,-2.24 3.41,-0.29L15,8l1.34,3.14 3.41,0.29 -2.59,2.24 0.78,3.33z" />
-</vector>

app/src/main/res/menu/menu_folders.xml

@@ -3,9 +3,9 @@
     xmlns:app="http://schemas.android.com/apk/res-auto">
 
     <item
-        android:id="@+id/action_go_to_standard_folder"
+        android:id="@+id/action_go_to_music_folder"
-        android:icon="@drawable/ic_folder_special_white_24dp"
+        android:icon="@drawable/ic_music_note_white_24dp"
-        android:title="@string/action_go_to_standard_folder"
+        android:title="@string/action_go_to_music_folder"
         app:showAsAction="ifRoom" />
 
 </menu>

app/src/main/res/values/strings.xml

@@ -96,7 +96,7 @@
     <string name="action_shuffle_artist">Shuffle artist</string>
     <string name="action_shuffle_playlist">Shuffle playlist</string>
     <string name="action_clear_playing_queue">Clear playing queue</string>
-    <string name="action_go_to_standard_folder">Go to standard folder</string>
+    <string name="action_go_to_music_folder">Go to music folder</string>
     <string name="last_opened">Last opened</string>
     <string name="light_theme_name">Light</string>
     <string name="dark_theme_name">Dark</string>