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package com.mapswithme.maps.settings;
import android.annotation.TargetApi;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Environment;
import android.os.StatFs;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import com.mapswithme.maps.BuildConfig;
import com.mapswithme.maps.Framework;
import com.mapswithme.maps.MwmApplication;
import com.mapswithme.maps.MapStorage;
import com.mapswithme.maps.R;
import com.mapswithme.maps.bookmarks.data.BookmarkManager;
import com.mapswithme.util.Constants;
import com.mapswithme.util.UiUtils;
import com.mapswithme.util.Utils;
import com.mapswithme.util.concurrency.ThreadPool;
import com.mapswithme.util.concurrency.UiThread;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FilenameFilter;
import java.io.IOException;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
@SuppressWarnings("ResultOfMethodCallIgnored")
public class StoragePathManager
{
private static final String[] MOVABLE_EXTS = Framework.nativeGetMovableFilesExts();
private static final FilenameFilter MOVABLE_FILES_FILTER = new FilenameFilter() {
@Override
public boolean accept(File dir, String filename)
{
for (String ext : MOVABLE_EXTS)
if (filename.endsWith(ext))
return true;
return false;
}
};
public interface MoveFilesListener
{
void moveFilesFinished(String newPath);
void moveFilesFailed(int errorCode);
}
public static final int NO_ERROR = 0;
public static final int UNKNOWN_LITE_PRO_ERROR = 1;
public static final int IOEXCEPTION_ERROR = 2;
public static final int NULL_ERROR = 4;
public static final int NOT_A_DIR_ERROR = 5;
public static final int UNKNOWN_KITKAT_ERROR = 6;
private static String TAG = StoragePathManager.class.getName();
private static final String LITE_SDCARD_PREFIX = "Android/data/com.mapswithme.maps/files";
private static final String SAMSUNG_LITE_SDCARD_PREFIX = "Android/data/com.mapswithme.maps.samsung/files";
private static final String PRO_SDCARD_PREFIX = "Android/data/com.mapswithme.maps.pro/files";
private static final int VOLD_MODE = 1;
private static final int MOUNTS_MODE = 2;
private static final String IS_KML_PLACED_IN_MAIN_STORAGE = "KmlBeenMoved";
private static final String IS_KITKAT_MIGRATION_COMPLETED = "KitKatMigrationCompleted";
private BroadcastReceiver mExternalReceiver;
private BroadcastReceiver mInternalReceiver;
private Activity mActivity;
private ArrayList<StoragePathAdapter.StorageItem> mItems;
private int mCurrentStorageIndex = -1;
private MoveFilesListener mStorageListener;
/**
* Observes status of connected media and retrieves list of available external storages.
*
* @param activity context
* @param receiver receiver to get broadcasts of media events. can be null
* @param listener listener to get notifications about maps transfers. can be null
*/
public void startExternalStorageWatching(Activity activity, BroadcastReceiver receiver, MoveFilesListener listener)
{
mActivity = activity;
mStorageListener = listener;
mExternalReceiver = receiver;
mInternalReceiver = new BroadcastReceiver()
{
@Override
public void onReceive(Context context, Intent intent)
{
if (mExternalReceiver != null)
mExternalReceiver.onReceive(context, intent);
updateExternalStorages();
}
};
mActivity.registerReceiver(mInternalReceiver, getMediaChangesIntentFilter());
updateExternalStorages();
}
public static IntentFilter getMediaChangesIntentFilter()
{
final IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_MEDIA_MOUNTED);
filter.addAction(Intent.ACTION_MEDIA_REMOVED);
filter.addAction(Intent.ACTION_MEDIA_EJECT);
filter.addAction(Intent.ACTION_MEDIA_SHARED);
filter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
filter.addAction(Intent.ACTION_MEDIA_BAD_REMOVAL);
filter.addAction(Intent.ACTION_MEDIA_UNMOUNTABLE);
filter.addAction(Intent.ACTION_MEDIA_CHECKING);
filter.addAction(Intent.ACTION_MEDIA_NOFS);
filter.addDataScheme(Constants.Url.DATA_SCHEME_FILE);
return filter;
}
public void stopExternalStorageWatching()
{
if (mInternalReceiver != null)
{
mActivity.unregisterReceiver(mInternalReceiver);
mInternalReceiver = null;
mExternalReceiver = null;
}
}
public boolean hasMoreThanOneStorage()
{
return mItems.size() > 1;
}
public ArrayList<StoragePathAdapter.StorageItem> getStorageItems()
{
return mItems;
}
public int getCurrentStorageIndex()
{
return mCurrentStorageIndex;
}
public void updateExternalStorages()
{
ArrayList<String> paths = new ArrayList<>();
if (Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT)
parseKitkatStorages(paths);
else
parseStorages(paths);
Map<Long, String> pathsSizesMap = new HashMap<>();
// Add current path first!
final String currentStorageDir = getWritableDirRoot();
addStoragePathWithSize(currentStorageDir, pathsSizesMap);
for (String path : paths)
addStoragePathWithSize(path, pathsSizesMap);
addStoragePathWithSize(Environment.getExternalStorageDirectory().getAbsolutePath(), pathsSizesMap);
mItems = new ArrayList<>();
mCurrentStorageIndex = -1;
for (Map.Entry<Long, String> entry : pathsSizesMap.entrySet())
{
StoragePathAdapter.StorageItem item = new StoragePathAdapter.StorageItem(entry.getValue(), entry.getKey());
mItems.add(item);
if (item.mPath.equals(currentStorageDir))
mCurrentStorageIndex = mItems.size() - 1;
}
if (mCurrentStorageIndex == -1)
{
Log.w(TAG, "Unrecognized current path: " + currentStorageDir);
Log.w(TAG, "Parsed paths: " + Utils.mapPrettyPrint(pathsSizesMap));
}
}
@TargetApi(Build.VERSION_CODES.KITKAT)
private static void parseKitkatStorages(List<String> paths)
{
File primaryStorage = MwmApplication.get().getExternalFilesDir(null);
File[] storages = MwmApplication.get().getExternalFilesDirs(null);
if (storages != null)
{
for (File f : storages)
{
// add only secondary dirs
if (f != null && !f.equals(primaryStorage))
{
Log.i(TAG, "Additional storage path: " + f.getPath());
paths.add(f.getPath());
}
}
}
ArrayList<String> testStorages = new ArrayList<>();
parseStorages(testStorages);
final String suffix = String.format(Constants.STORAGE_PATH, BuildConfig.APPLICATION_ID, Constants.FILES_DIR);
for (String testStorage : testStorages)
{
Log.i(TAG, "Test storage from config files : " + testStorage);
if (isDirWritable(testStorage))
{
Log.i(TAG, "Found writable storage : " + testStorage);
paths.add(testStorage);
}
else
{
testStorage += suffix;
File file = new File(testStorage);
if (!file.exists()) // create directory for our package if it isn't created by any reason
{
Log.i(TAG, "Try to create MWM path");
file.mkdirs();
file = new File(testStorage);
if (file.exists())
Log.i(TAG, "Created!");
}
if (isDirWritable(testStorage))
{
Log.i(TAG, "Found writable storage : " + testStorage);
paths.add(testStorage);
}
}
}
}
private static void parseStorages(ArrayList<String> paths)
{
parseMountFile("/etc/vold.conf", VOLD_MODE, paths);
parseMountFile("/etc/vold.fstab", VOLD_MODE, paths);
parseMountFile("/system/etc/vold.fstab", VOLD_MODE, paths);
parseMountFile("/proc/mounts", MOUNTS_MODE, paths);
}
public static long getMwmDirSize()
{
final File writableDir = new File(Framework.nativeGetWritableDir());
if (BuildConfig.DEBUG)
{
if (!writableDir.exists())
throw new IllegalStateException("Writable directory doesn't exits, can't get size.");
if (!writableDir.isDirectory())
throw new IllegalStateException("Writable directory isn't a directory, can't get size.");
}
return getDirSizeRecursively(writableDir, MOVABLE_FILES_FILTER);
}
public boolean moveBookmarksToPrimaryStorage()
{
ArrayList<String> paths = new ArrayList<>();
parseStorages(paths);
List<String> approvedPaths = new ArrayList<>();
for (String path : paths)
{
String mwmPath = path + Constants.MWM_DIR_POSTFIX;
File f = new File(mwmPath);
if (f.exists() || f.canRead() || f.isDirectory())
approvedPaths.add(mwmPath);
}
final String settingsDir = Framework.nativeGetSettingsDir();
final String writableDir = Framework.nativeGetWritableDir();
final String bookmarkDir = Framework.nativeGetBookmarkDir();
final String bookmarkFileExt = Framework.nativeGetBookmarksExt();
Set<File> bookmarks = new LinkedHashSet<>();
if (!settingsDir.equals(writableDir))
approvedPaths.add(writableDir);
for (String path : approvedPaths)
{
if (!path.equals(settingsDir))
accumulateFiles(path, bookmarkFileExt, bookmarks);
}
long bookmarksSize = 0;
for (File f : bookmarks)
bookmarksSize += f.length();
if (getFreeBytesAtPath(bookmarkDir) < bookmarksSize)
return false;
for (File oldBookmark : bookmarks)
{
String newBookmarkPath = BookmarkManager.generateUniqueBookmarkName(oldBookmark.getName().replace(bookmarkFileExt, ""));
try
{
copyFile(oldBookmark, new File(newBookmarkPath));
oldBookmark.delete();
} catch (IOException e)
{
e.printStackTrace();
return false;
}
}
Framework.nativeLoadBookmarks();
return true;
}
private static void accumulateFiles(final String dirPath, final String filesExtension, Set<File> result)
{
File f = new File(dirPath);
File[] bookmarks = f.listFiles(new FileFilter()
{
@Override
public boolean accept(File pathname)
{
return pathname.getName().endsWith(filesExtension);
}
});
result.addAll(Arrays.asList(bookmarks));
}
protected void onStorageItemClick(int index)
{
final StoragePathAdapter.StorageItem oldItem = (mCurrentStorageIndex != -1) ? mItems.get(mCurrentStorageIndex) : null;
final StoragePathAdapter.StorageItem item = mItems.get(index);
final String path = getItemFullPath(item);
final File f = new File(path);
if (!f.exists() && !f.mkdirs())
{
Log.e(TAG, "Can't create directory: " + path);
return;
}
new AlertDialog.Builder(mActivity).setCancelable(false).setTitle(R.string.move_maps)
.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dlg, int which)
{
setStoragePath(mActivity, new MoveFilesListener()
{
@Override
public void moveFilesFinished(String newPath)
{
updateExternalStorages();
if (mStorageListener != null)
mStorageListener.moveFilesFinished(newPath);
}
@Override
public void moveFilesFailed(int errorCode)
{
updateExternalStorages();
if (mStorageListener != null)
mStorageListener.moveFilesFailed(errorCode);
}
}, item, oldItem, R.string.wait_several_minutes);
dlg.dismiss();
}
}).setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dlg, int which)
{
dlg.dismiss();
}
}).create().show();
}
/**
* Checks whether current directory is actually writable on Kitkat devices. On earlier versions of android ( < 4.4 ) the root of external
* storages was writable, but on Kitkat it isn't, so we should move our maps to other directory.
* http://www.doubleencore.com/2014/03/android-external-storage/ check that link for explanations
*/
public void checkExternalStoragePathOnKitkat(Context context, MoveFilesListener listener)
{
if (Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.KITKAT)
return;
final String settingsDir = Framework.nativeGetSettingsDir();
final String writableDir = Framework.nativeGetWritableDir();
if (settingsDir.equals(writableDir) || isDirWritable(writableDir))
return;
final long size = getMwmDirSize();
updateExternalStorages();
for (StoragePathAdapter.StorageItem item : mItems)
{
if (item.mSize > size)
{
setStoragePath(context, listener, item, new StoragePathAdapter.StorageItem(getWritableDirRoot(), 0),
R.string.kitkat_optimization_in_progress);
return;
}
}
listener.moveFilesFailed(UNKNOWN_KITKAT_ERROR);
}
public void moveMapsLiteToPro(Context context, MoveFilesListener listener)
{
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT)
return;
final long size = getMwmDirSize();
StoragePathAdapter.StorageItem currentStorage = new StoragePathAdapter.StorageItem(getWritableDirRoot(), 0);
// there is no need to copy maps from primary external storage(on internal device flash memory) -
// maps are stored there in root folder and pro version can simply use them
if (Environment.getExternalStorageDirectory().getAbsolutePath().equals(currentStorage.mPath))
return;
updateExternalStorages();
for (StoragePathAdapter.StorageItem item : mItems)
{
if (item.mSize > size && item.mPath.contains(PRO_SDCARD_PREFIX)
&& !item.mPath.equals(currentStorage.mPath))
{
setStoragePath(context, listener, item, currentStorage,
R.string.move_lite_maps_to_pro);
return;
}
}
listener.moveFilesFailed(UNKNOWN_LITE_PRO_ERROR);
}
public boolean containsLiteMapsOnSdcard()
{
final String storagePath = getWritableDirRoot();
return storagePath.contains(LITE_SDCARD_PREFIX) || storagePath.contains(SAMSUNG_LITE_SDCARD_PREFIX);
}
/**
* Checks bookmarks and data(mwms, routing, indexes etc) locations on external storages.
* <p/>
* Bookmarks should be placed in main MapsWithMe directory on primary storage (eg. SettingsDir, where settings.ini file is placed). If they were copied
* to external storage (can happen on 2.6 and earlier mapswithme application versions) - we should move them back.
* <p/>
* Data should be placed in private app directory on Kitkat+ devices, hence root of sdcard isn't writable anymore on them.
*/
public void checkKitkatMigration(final Activity activity)
{
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT)
return;
migrateBookmarks(activity, new MoveFilesListener()
{
@Override
public void moveFilesFinished(String newPath)
{
migrateMaps(activity);
}
@Override
public void moveFilesFailed(int errorCode)
{
UiUtils.showAlertDialog(activity, R.string.bookmark_move_fail);
}
});
}
private void migrateBookmarks(final Activity activity, final MoveFilesListener listener)
{
if (MwmApplication.get().nativeGetBoolean(IS_KML_PLACED_IN_MAIN_STORAGE, false))
listener.moveFilesFinished("");
else
{
ThreadPool.getStorage().execute(new Runnable()
{
@Override
public void run()
{
final boolean res = moveBookmarksToPrimaryStorage();
UiThread.run(new Runnable()
{
@Override
public void run()
{
if (res)
{
MwmApplication.get().nativeSetBoolean(IS_KML_PLACED_IN_MAIN_STORAGE, true);
listener.moveFilesFinished("");
}
else
listener.moveFilesFailed(NULL_ERROR);
}
});
}
});
}
}
private void migrateMaps(final Activity activity)
{
if (!MwmApplication.get().nativeGetBoolean(IS_KITKAT_MIGRATION_COMPLETED, false))
{
checkExternalStoragePathOnKitkat(activity,
new MoveFilesListener()
{
@Override
public void moveFilesFinished(String newPath)
{
MwmApplication.get().nativeSetBoolean(IS_KITKAT_MIGRATION_COMPLETED, true);
UiUtils.showAlertDialog(activity, R.string.kitkat_migrate_ok);
}
@Override
public void moveFilesFailed(int errorCode)
{
UiUtils.showAlertDialog(activity, R.string.kitkat_migrate_failed);
}
}
);
}
}
private void setStoragePath(Context context, MoveFilesListener listener, StoragePathAdapter.StorageItem newStorage,
StoragePathAdapter.StorageItem oldStorage, int messageId)
{
new MoveFilesTask(context, listener, newStorage, oldStorage, messageId).execute("");
}
/**
* Recursively lists all movable files in the directory.
*/
private static void listFilesRecursively(File dir, String prefix, FilenameFilter filter, ArrayList<String> relPaths)
{
for (File file : dir.listFiles())
{
if (file.isDirectory())
{
listFilesRecursively(file, prefix + file.getName() + File.separator, filter, relPaths);
continue;
}
String name = file.getName();
if (filter.accept(dir, name))
relPaths.add(prefix + name);
}
}
private static void removeEmptyDirectories(File dir)
{
for (File file : dir.listFiles())
{
if (!file.isDirectory())
continue;
removeEmptyDirectories(file);
file.delete();
}
}
private static boolean removeFilesInDirectory(File dir, File[] files)
{
try
{
for (File file : files)
{
if (file != null)
file.delete();
}
removeEmptyDirectories(dir);
return true;
} catch (Exception e)
{
e.printStackTrace();
return false;
}
}
private static int changeStorage(StoragePathAdapter.StorageItem newStorage, StoragePathAdapter.StorageItem oldStorage)
{
final String fullNewPath = getItemFullPath(newStorage);
// According to onStorageItemClick code above, oldStorage can be null.
if (oldStorage == null)
{
Log.w(TAG, "Old storage path is null. New path is: " + fullNewPath);
return NULL_ERROR;
}
final String fullOldPath = getItemFullPath(oldStorage);
final File oldDir = new File(fullOldPath);
final File newDir = new File(fullNewPath);
if (!newDir.exists())
newDir.mkdir();
if (BuildConfig.DEBUG)
{
if (!newDir.isDirectory())
throw new IllegalStateException("Cannot move maps. New path is not a directory. New path : " + newDir);
if (!oldDir.isDirectory())
throw new IllegalStateException("Cannot move maps. Old path is not a directory. Old path : " + oldDir);
if (!isDirWritable(fullNewPath))
throw new IllegalStateException("Cannot move maps. New path is not writable. New path : " + fullNewPath);
}
ArrayList<String> relPaths = new ArrayList<>();
listFilesRecursively(oldDir, "", MOVABLE_FILES_FILTER, relPaths);
File[] oldFiles = new File[relPaths.size()];
File[] newFiles = new File[relPaths.size()];
for (int i = 0; i < relPaths.size(); ++i)
{
oldFiles[i] = new File(oldDir.getAbsolutePath() + File.separator + relPaths.get(i));
newFiles[i] = new File(newDir.getAbsolutePath() + File.separator + relPaths.get(i));
}
try
{
for (int i = 0; i < oldFiles.length; ++i)
{
if (!MapStorage.nativeMoveFile(oldFiles[i].getAbsolutePath(), newFiles[i].getAbsolutePath()))
{
File parent = newFiles[i].getParentFile();
if (parent != null)
parent.mkdirs();
copyFile(oldFiles[i], newFiles[i]);
}
else
{
// No need to delete oldFiles[i] because it was moved to newFiles[i].
oldFiles[i] = null;
}
}
} catch (IOException e)
{
e.printStackTrace();
// In the case of failure delete all new files. Old files will
// be lost if new files were just moved from old locations.
removeFilesInDirectory(newDir, newFiles);
return IOEXCEPTION_ERROR;
}
UiThread.run(new Runnable()
{
@Override
public void run()
{
Framework.nativeSetWritableDir(fullNewPath);
}
});
// Delete old files because new files were successfully created.
removeFilesInDirectory(oldDir, oldFiles);
return NO_ERROR;
}
private static void copyFile(File source, File dest) throws IOException
{
int maxChunkSize = 10 * Constants.MB; // move file by smaller chunks to avoid OOM.
FileChannel inputChannel = null, outputChannel = null;
try
{
inputChannel = new FileInputStream(source).getChannel();
outputChannel = new FileOutputStream(dest).getChannel();
long totalSize = inputChannel.size();
for (long currentPosition = 0; currentPosition < totalSize; currentPosition += maxChunkSize)
{
outputChannel.position(currentPosition);
outputChannel.transferFrom(inputChannel, currentPosition, maxChunkSize);
}
} finally
{
if (inputChannel != null)
inputChannel.close();
if (outputChannel != null)
outputChannel.close();
}
}
private static long getDirSizeRecursively(File file, FilenameFilter fileFilter)
{
if (file.isDirectory())
{
long dirSize = 0;
for (File child : file.listFiles())
dirSize += getDirSizeRecursively(child, fileFilter);
return dirSize;
}
if (fileFilter.accept(file.getParentFile(), file.getName()))
return file.length();
return 0;
}
private class MoveFilesTask extends AsyncTask<String, Void, Integer>
{
private final ProgressDialog mDlg;
private final StoragePathAdapter.StorageItem mNewStorage;
private final StoragePathAdapter.StorageItem mOldStorage;
private final MoveFilesListener mListener;
public MoveFilesTask(Context context, MoveFilesListener listener, StoragePathAdapter.StorageItem newStorage,
StoragePathAdapter.StorageItem oldStorage, int messageID)
{
mNewStorage = newStorage;
mOldStorage = oldStorage;
mListener = listener;
mDlg = new ProgressDialog(context);
mDlg.setMessage(context.getString(messageID));
mDlg.setProgressStyle(ProgressDialog.STYLE_SPINNER);
mDlg.setIndeterminate(true);
mDlg.setCancelable(false);
}
@Override
protected void onPreExecute()
{
mDlg.show();
}
@Override
protected Integer doInBackground(String... params)
{
return changeStorage(mNewStorage, mOldStorage);
}
@Override
protected void onPostExecute(Integer result)
{
// Using dummy try-catch because of the following:
// http://stackoverflow.com/questions/2745061/java-lang-illegalargumentexception-view-not-attached-to-window-manager
try
{
mDlg.dismiss();
} catch (final Exception e)
{
e.printStackTrace();
}
if (result == NO_ERROR)
mListener.moveFilesFinished(mNewStorage.mPath);
else
mListener.moveFilesFailed(result);
updateExternalStorages();
}
}
private static void addStoragePathWithSize(String path, Map<Long, String> sizesPaths)
{
Log.i(TAG, "Trying to add path " + path);
try
{
final File f = new File(path + "/");
if (f.exists() && f.isDirectory() && f.canWrite() && isDirWritable(path))
{
final long size = getFreeBytesAtPath(path);
if (size > 0 && !sizesPaths.containsKey(size))
{
Log.i(TAG, "Path added: " + path + ", size = " + size);
sizesPaths.put(size, path);
}
}
} catch (final IllegalArgumentException ex)
{
// Suppress exceptions for unavailable storages.
Log.i(TAG, "StatFs error for path: " + path);
}
}
// http://stackoverflow.com/questions/8151779/find-sd-card-volume-label-on-android
// http://stackoverflow.com/questions/5694933/find-an-external-sd-card-location
// http://stackoverflow.com/questions/14212969/file-canwrite-returns-false-on-some-devices-although-write-external-storage-pe
private static void parseMountFile(String file, int mode, ArrayList<String> paths)
{
Log.i(TAG, "Parsing " + file);
BufferedReader reader = null;
try
{
reader = new BufferedReader(new FileReader(file));
while (true)
{
final String line = reader.readLine();
if (line == null)
break;
// standard regexp for all possible whitespaces (space, tab, etc)
final String[] arr = line.split("\\s+");
// split may return empty first strings
int start = 0;
while (start < arr.length && arr[start].length() == 0)
++start;
if (arr.length - start > 3)
{
if (arr[start].charAt(0) == '#')
continue;
if (mode == VOLD_MODE)
{
if (arr[start].startsWith("dev_mount"))
paths.add(arr[start + 2]);
}
else
{
final String prefixes[] = {"tmpfs", "/dev/block/vold", "/dev/fuse", "/mnt/media_rw"};
for (final String s : prefixes)
if (arr[start].startsWith(s))
paths.add(arr[start + 1]);
}
}
}
} catch (final IOException e)
{
Log.w(TAG, "Can't read file: " + file);
} finally
{
Utils.closeStream(reader);
}
}
@SuppressWarnings("deprecation")
private static long getFreeBytesAtPath(String path)
{
long size = 0;
try
{
if (Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.GINGERBREAD)
{
final StatFs stat = new StatFs(path);
size = stat.getAvailableBlocks() * (long) stat.getBlockSize();
}
else
size = new File(path).getFreeSpace();
} catch (RuntimeException e)
{
e.printStackTrace();
}
return size;
}
/**
* Check if directory is writable. On some devices with KitKat (eg, Samsung S4) simple File.canWrite() returns
* true for some actually read only directories on sdcard.
* see https://code.google.com/p/android/issues/detail?id=66369 for details
*
* @param path path to ckeck
* @return result
*/
private static boolean isDirWritable(String path)
{
final File f = new File(path + "/testDir");
f.mkdir();
if (f.exists())
{
f.delete();
return true;
}
return false;
}
private static String getItemFullPath(StoragePathAdapter.StorageItem item)
{
return item.mPath + Constants.MWM_DIR_POSTFIX;
}
private static String getWritableDirRoot()
{
String writableDir = Framework.nativeGetWritableDir();
int index = writableDir.lastIndexOf(Constants.MWM_DIR_POSTFIX);
if (index != -1)
writableDir = writableDir.substring(0, index);
return writableDir;
}
}
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