getFileSize

public static String getFolderSizeLabel(File file) { long size = getFolderSize(file) / 1024; // Get size and convert bytes into Kb. if (size >= 1024) { return (size / 1024) + " Mb"; } else { return size + " Kb"; }}

public static long getFolderSize(File file) { long size = 0; if (file.isDirectory()) { for (File child : file.listFiles()) { size += getFolderSize(child); } } else { size = file.length(); } return size;}