get number of files in a directory and its subdirectories

Question

using this code

new File(\"/mnt/sdcard/folder\").listFiles().length

returns a sum of folders and files in a particular directory without ca

Answer 1

public Integer countFiles(File folder, Integer count) {
    File[] files = folder.listFiles();
    for (File file: files) {
        if (file.isFile()) {
            count++;
        } else {
            countFiles(file, count);
        }
    }

    return count;
}

Usage:

Integer count = countFiles(new File("your/path"), Integer.valuOf(0));