Java tutorial
//package com.java2s; //License from project: Apache License import android.os.Environment; import java.io.File; public class Main { private static String createDir(String path) { boolean isHaveSDCard = Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED); if (!isHaveSDCard) { return null; } File directory = Environment.getExternalStorageDirectory(); File file = new File(directory.getAbsolutePath() + path); if (!file.exists()) { boolean isSuccess = file.mkdirs(); if (isSuccess) { return file.getPath() + File.separator; } else { return null; } } return file.getPath() + File.separator; } }