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Improved performance when loading larger file trees.

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This commit is contained in:
Karim Abou Zeid 2016-03-16 03:01:26 +01:00
commit fb2ad970d0
1 changed files with 50 additions and 48 deletions
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100
app/src/main/java/com/kabouzeid/gramophone/ui/fragments/FolderFragment.java
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@ -42,8 +42,9 @@ import com.simplecityapps.recyclerview_fastscroll.views.FastScrollRecyclerView;
import java.io.File;
import java.io.FileFilter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import butterknife.Bind;
@ -270,12 +271,12 @@ public class FolderFragment extends AbsMainActivityFragment implements MainActiv
if (file.isDirectory()) {
setCrumb(new BreadCrumbLayout.Crumb(file), true);
} else {
ArrayList<Song> songs = getAllSongs(file.getParentFile(), new FileFilter() {
ArrayList<Song> songs = matchFilesWithMediaStore(listFilesIncludingSubFolders(file.getParentFile(), new FileFilter() {
@Override
public boolean accept(File pathname) {
return !pathname.isDirectory();
}
});
}));
int startIndex = -1;
for (int i = 0; i < songs.size(); i++) {
@ -292,23 +293,26 @@ public class FolderFragment extends AbsMainActivityFragment implements MainActiv
}
}
@DebugLog
@Nullable
private static SortedCursor makeSongCursor(@NonNull final Context context, @Nullable final List<File> files) {
String selection = null;
String[] values = null;
String[] paths = null;
if (files != null && files.size() > 0 && files.size() < 999) { // 999 is the max amount Androids SQL implementation can handle.
selection = AudioColumns.DATA + " IN (" + makePlaceholders(files.size()) + ")";
values = new String[files.size()];
if (files != null) {
paths = new String[files.size()];
for (int i = 0; i < files.size(); i++) {
values[i] = files.get(i).getPath();
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()) + ")";
}
}
Cursor songCursor = SongLoader.makeSongCursor(context, selection, values);
Cursor songCursor = SongLoader.makeSongCursor(context, selection, selection == null ? null : paths);
return songCursor == null ? null : new SortedCursor(songCursor, values, AudioColumns.DATA);
return songCursor == null ? null : new SortedCursor(songCursor, paths, AudioColumns.DATA);
}
private static String makePlaceholders(int len) {
@ -327,59 +331,57 @@ public class FolderFragment extends AbsMainActivityFragment implements MainActiv
@Override
public void onAddToPlaylist(ArrayList<File> files) {
AddToPlaylistDialog.create(getAllSongs(files, null)).show(getFragmentManager(), "ADD_PLAYLIST");
ArrayList<Song> songs = matchFilesWithMediaStore(listFilesIncludingSubFolders(files, null));
if (!songs.isEmpty())
AddToPlaylistDialog.create(songs).show(getFragmentManager(), "ADD_PLAYLIST");
}
@Override
public void onAddToCurrentPlaying(ArrayList<File> files) {
MusicPlayerRemote.enqueue(getAllSongs(files, null));
ArrayList<Song> songs = matchFilesWithMediaStore(listFilesIncludingSubFolders(files, null));
if (!songs.isEmpty())
MusicPlayerRemote.enqueue(songs);
}
@Override
public void onDeleteFromDevice(ArrayList<File> files) {
DeleteSongsDialog.create(getAllSongs(files, null)).show(getFragmentManager(), "DELETE_SONGS");
ArrayList<Song> songs = matchFilesWithMediaStore(listFilesIncludingSubFolders(files, null));
if (!songs.isEmpty())
DeleteSongsDialog.create(songs).show(getFragmentManager(), "DELETE_SONGS");
}
private ArrayList<Song> getAllSongs(File dir, @Nullable FileFilter fileFilter) {
ArrayList<Song> songs = new ArrayList<>();
ArrayList<File> files = new ArrayList<>();
File[] fileArray = dir.listFiles(fileFilter);
if (fileArray != null) Collections.addAll(files, fileArray);
Iterator<File> iterator = files.iterator();
while (iterator.hasNext()) {
File file = iterator.next();
if (file.isDirectory()) {
songs.addAll(getAllSongs(file, fileFilter));
iterator.remove();
}
}
SortedCursor cursor = makeSongCursor(getActivity(), files);
songs.addAll(SongLoader.getSongs(cursor));
return songs;
private ArrayList<Song> matchFilesWithMediaStore(@Nullable List<File> files) {
return SongLoader.getSongs(makeSongCursor(getActivity(), files));
}
@DebugLog
private ArrayList<Song> getAllSongs(List<File> files, @Nullable FileFilter fileFilter) {
ArrayList<Song> songs = new ArrayList<>();
@NonNull
private static List<File> listFilesIncludingSubFolders(@NonNull File dir, @Nullable FileFilter fileFilter) {
List<File> files = new LinkedList<>();
internalListFiles(files, dir, fileFilter);
return files;
}
Iterator<File> iterator = files.iterator();
while (iterator.hasNext()) {
File file = iterator.next();
if (fileFilter != null && !fileFilter.accept(file)) {
iterator.remove();
} else if (file.isDirectory()) {
iterator.remove();
songs.addAll(getAllSongs(file, fileFilter));
@NonNull
private static List<File> listFilesIncludingSubFolders(@NonNull List<File> dirs, @Nullable FileFilter fileFilter) {
List<File> files = new LinkedList<>();
for (File file : dirs) {
internalListFiles(files, file, fileFilter);
}
return files;
}
private static void internalListFiles(@NonNull Collection<File> files, @NonNull File directory, @Nullable FileFilter fileFilter) {
File[] found = directory.listFiles(fileFilter);
if (found != null) {
for (File file : found) {
if (file.isDirectory()) {
internalListFiles(files, file, fileFilter);
} else {
files.add(file);
}
}
}
SortedCursor cursor = makeSongCursor(getActivity(), files);
songs.addAll(SongLoader.getSongs(cursor));
return songs;
}
@Override