Java tutorial
//package com.java2s; import java.io.File; import android.os.Environment; public class Main { public static File getExternalStorageDir(String dirName) { File file = null; if (dirName == null) { file = Environment.getExternalStorageDirectory(); } else { file = new File(Environment.getExternalStorageDirectory(), dirName); } if (!file.exists()) { file.mkdirs(); } return file; } }