File_Size - mayurparmar2/AlarmDemo GitHub Wiki

 /* get format File Size*/
public static String formatFileSize(long size) {
    if (size <= 0) {
        return "0 B";
    }
    final String[] units = {"B", "KB", "MB", "GB", "TB"};
    int digitGroups = (int) (Math.log10(size) / Math.log10(1024));
    return new DecimalFormat("#,##0.#").format(size / Math.pow(1024, digitGroups)) + " " + units[digitGroups];
}

 /* deleteDir File*/
public  boolean deleteDir(File dir) {
    if (dir.isDirectory()) {
        String[] children = dir.list();
        for (int i=0; i<children.length; i++) {
            boolean success = deleteDir(new File(dir, children[i]));
            if (!success) {
                return false;
            }
        }
    }
    // The directory is now empty so delete it
    return dir.delete();
}

 /* sp2px and dp2px File*/

    float sp2px(Resources resources, float f) {
        return f * resources.getDisplayMetrics().scaledDensity;
    }

    float dp2px(Resources resources, float f) {
        return (f * resources.getDisplayMetrics().density) + 0.5f;
    }