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Scan files async.

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This commit is contained in:
Karim Abou Zeid 2016-03-26 14:33:51 +01:00
commit c3bc6ea707
1 changed files with 142 additions and 60 deletions
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202
app/src/main/java/com/kabouzeid/gramophone/ui/fragments/mainactivity/folders/FoldersFragment.java
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@ -2,6 +2,7 @@ package com.kabouzeid.gramophone.ui.fragments.mainactivity.folders;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
@ -68,7 +69,6 @@ import java.util.List;
import butterknife.Bind;
import butterknife.ButterKnife;
import hugo.weaving.DebugLog;
public class FoldersFragment extends AbsMainActivityFragment implements MainActivity.MainActivityFragmentCallbacks, CabHolder, BreadCrumbLayout.SelectionCallback, SongFileAdapter.Callbacks, AppBarLayout.OnOffsetChangedListener, LoaderManager.LoaderCallbacks<List<File>> {
public static final String TAG = FoldersFragment.class.getSimpleName();
@ -352,54 +352,7 @@ public class FoldersFragment extends AbsMainActivityFragment implements MainActi
}
private void scan(File file) {
final String[] toBeScanned;
if (file.isDirectory()) {
// TODO load async
List<File> files = FileUtil.listFilesDeep(file, getFileFilter());
toBeScanned = new String[files.size()];
for (int i = 0; i < files.size(); i++) {
File f = files.get(i);
try {
toBeScanned[i] = f.getCanonicalPath(); // canonical path is important here because we want to compare the path with the media store entry later
} catch (IOException e) {
e.printStackTrace();
toBeScanned[i] = f.getPath();
}
}
} else {
toBeScanned = new String[1];
toBeScanned[0] = file.getPath();
}
if (toBeScanned.length < 1) {
Toast.makeText(getActivity(), R.string.nothing_to_scan, Toast.LENGTH_SHORT).show();
} else {
final Toast toast = Toast.makeText(getActivity(), String.format(getString(R.string.scanning), file), Toast.LENGTH_SHORT);
toast.show();
MediaScannerConnection.scanFile(getActivity(), toBeScanned, null, new MediaScannerConnection.OnScanCompletedListener() {
int scanned = 0;
int failed = 0;
@Override
public void onScanCompleted(final String path, final Uri uri) {
getActivity().runOnUiThread(new Runnable() {
@SuppressLint("DefaultLocale")
@Override
public void run() {
if (uri == null) {
failed++;
} else {
scanned++;
}
toast.setText(" " + String.format(getString(R.string.scanned_files), scanned, toBeScanned.length) + (failed > 0 ? " " + String.format(getString(R.string.could_not_scan_files), failed) : ""));
toast.show();
}
});
}
});
}
new ScanFilesAsyncTask(this, file).execute(getFileFilter());
}
@Override
@ -578,10 +531,15 @@ public class FoldersFragment extends AbsMainActivityFragment implements MainActi
try {
LoadingInfo info = params[0];
List<File> files = FileUtil.listFilesDeep(info.files, info.fileFilter);
if (isCancelled() || checkFragmentReference()) return null;
if (isCancelled() || checkFragmentReference() == null) return null;
Collections.sort(files, info.fileComparator);
if (isCancelled() || checkFragmentReference()) return null;
return FileUtil.matchFilesWithMediaStore(fragmentWeakReference.get().getActivity(), files);
FoldersFragment fragment = checkFragmentReference();
if (isCancelled() || fragment == null) return null;
return FileUtil.matchFilesWithMediaStore(fragment.getActivity(), files);
} catch (Exception e) {
e.printStackTrace();
cancel(false);
@ -592,8 +550,9 @@ public class FoldersFragment extends AbsMainActivityFragment implements MainActi
@Override
protected void onPostExecute(ArrayList<Song> songs) {
super.onPostExecute(songs);
if (!songs.isEmpty() && !checkFragmentReference())
fragmentWeakReference.get().onSongsListed(requestCode, songs, extra);
FoldersFragment fragment = checkFragmentReference();
if (!songs.isEmpty() && fragment != null)
fragment.onSongsListed(requestCode, songs, extra);
}
public static class LoadingInfo {
@ -611,12 +570,137 @@ public class FoldersFragment extends AbsMainActivityFragment implements MainActi
/**
* @return true if the task was canceled
*/
private boolean checkFragmentReference() {
if (fragmentWeakReference.get() == null) {
private FoldersFragment checkFragmentReference() {
FoldersFragment fragment = fragmentWeakReference.get();
if (fragment == null) {
cancel(false);
return true;
}
return false;
return fragment;
}
}
private void onScanPaths(final String[] toBeScanned) {
if (getActivity() == null) return;
if (toBeScanned == null || toBeScanned.length < 1) {
Toast.makeText(getActivity(), R.string.nothing_to_scan, Toast.LENGTH_SHORT).show();
} else {
MediaScannerConnection.scanFile(getActivity().getApplicationContext(), toBeScanned, null, new UpdateToastCompletionListener(getActivity(), toBeScanned));
}
}
private static class UpdateToastCompletionListener implements MediaScannerConnection.OnScanCompletedListener {
int scanned = 0;
int failed = 0;
private final String[] toBeScanned;
private final String scannedFiles;
private final String couldNotScanFiles;
private final WeakReference<Toast> toastWeakReference;
private final WeakReference<Activity> activityWeakReference;
@SuppressLint("ShowToast")
public UpdateToastCompletionListener(Activity activity, String[] toBeScanned) {
this.toBeScanned = toBeScanned;
scannedFiles = activity.getString(R.string.scanned_files);
couldNotScanFiles = activity.getString(R.string.could_not_scan_files);
toastWeakReference = new WeakReference<>(Toast.makeText(activity, "", Toast.LENGTH_SHORT));
activityWeakReference = new WeakReference<>(activity);
}
@Override
public void onScanCompleted(final String path, final Uri uri) {
Activity activity = activityWeakReference.get();
if (activity != null) {
activity.runOnUiThread(new Runnable() {
@Override
public void run() {
Toast toast = toastWeakReference.get();
if (toast != null) {
if (uri == null) {
failed++;
} else {
scanned++;
}
String text = " " + String.format(scannedFiles, scanned, toBeScanned.length) + (failed > 0 ? " " + String.format(couldNotScanFiles, failed) : "");
toast.setText(text);
toast.show();
}
}
});
}
}
}
private static class ScanFilesAsyncTask extends DialogAsyncTask<FileFilter, String, String[]> {
private final File file;
private WeakReference<FoldersFragment> fragmentWeakReference;
public ScanFilesAsyncTask(FoldersFragment foldersFragment, File file) {
super(foldersFragment.getActivity(), R.string.listing_files);
this.file = file;
fragmentWeakReference = new WeakReference<>(foldersFragment);
}
@Override
protected void onPreExecute() {
super.onPreExecute();
checkFragmentReference();
}
@Override
protected String[] doInBackground(FileFilter... params) {
try {
if (isCancelled() || checkFragmentReference() == null) return null;
final String[] toBeScanned;
if (file.isDirectory()) {
List<File> files = FileUtil.listFilesDeep(file, params[0]);
if (isCancelled() || checkFragmentReference() == null) return null;
toBeScanned = new String[files.size()];
for (int i = 0; i < files.size(); i++) {
File f = files.get(i);
try {
toBeScanned[i] = f.getCanonicalPath(); // canonical path is important here because we want to compare the path with the media store entry later
} catch (IOException e) {
e.printStackTrace();
toBeScanned[i] = f.getPath();
}
if (isCancelled() || checkFragmentReference() == null) return toBeScanned;
}
} else {
toBeScanned = new String[1];
toBeScanned[0] = file.getPath();
}
return toBeScanned;
} catch (Exception e) {
e.printStackTrace();
cancel(false);
return null;
}
}
@Override
protected void onPostExecute(String[] toBeScanned) {
super.onPostExecute(toBeScanned);
FoldersFragment fragment = checkFragmentReference();
if (fragment != null) {
fragment.onScanPaths(toBeScanned);
}
}
private FoldersFragment checkFragmentReference() {
FoldersFragment fragment = fragmentWeakReference.get();
if (fragment == null) {
cancel(false);
}
return fragment;
}
}
@ -670,14 +754,12 @@ public class FoldersFragment extends AbsMainActivityFragment implements MainActi
}, 200);
}
@DebugLog
@Override
protected void onCancelled(Result result) {
super.onCancelled(result);
tryToDismiss();
}
@DebugLog
@Override
protected void onPostExecute(Result result) {
super.onPostExecute(result);