public static boolean backupDatabase() { File dbFile = new File(Environment.getDataDirectory() + "/data/" + PKG + "/databases/" + DB_NAME);
File exportDir = new File(Environment.getExternalStorageDirectory(), "pocket-voa");
if (!exportDir.exists()) { exportDir.mkdirs();
}
File file = new File(exportDir, dbFile.getName());
try { file.createNewFile();
copyFile(dbFile, file);
return true;
} catch (IOException e) { Log.e(TAG, "[backupDatabase] error", e);
return false;
}
}
public static boolean restoreDatabase() { File dbFile = new File(Environment.getDataDirectory() + "/data/" + PKG + "/databases/" + DatabaseHelper.DB_NAME);
File exportDbFile = new File(Environment.getExternalStorageDirectory() + "/pocket-voa/" + DatabaseHelper.DB_NAME);
if (!exportDbFile.exists())
return false;
try { dbFile.createNewFile();
copyFile(exportDbFile, dbFile);
return true;
} catch (IOException e) { Log.e(TAG, "[restoreDatabase] error", e);
return false;
}
}
private static void copyFile(File src, File dst) throws IOException { FileChannel inChannel = new FileInputStream(src).getChannel();
FileChannel outChannel = new FileOutputStream(dst).getChannel();
try { inChannel.transferTo(0, inChannel.size(), outChannel);
} finally { if (inChannel != null)
inChannel.close();
if (outChannel != null)
outChannel.close();
}
}