Android从Assets拷贝文件以及文件夹到指定目录

public static void copyFilesFromAssets(Context context, String assetsPath, String savePath){
try {
           String fileNames[] = context.getAssets().list(assetsPath);// 获取assets目录下的所有文件及目录名
           if (fileNames.length > 0) {// 如果是目录
               File file = new File(savePath);
               file.mkdirs();// 如果文件夹不存在，则递归
               for (String fileName : fileNames) {
copyFilesFromAssets(context, assetsPath + "/" + fileName,
                           savePath + "/" + fileName);
               }
           } else {// 如果是文件
               InputStream is = context.getAssets().open(assetsPath);
               FileOutputStream fos = new FileOutputStream(new File(savePath));
               byte[] buffer = new byte[1024];
               int byteCount = 0;
               while ((byteCount = is.read(buffer)) != -1) {// 循环从输入流读取
                   // buffer字节
                   fos.write(buffer, 0, byteCount);// 将读取的输入流写入到输出流
               }
               fos.flush();// 刷新缓冲区
               is.close();
               fos.close();
           }
       } catch (Exception e) {
// TODO Auto-generated catch block
 e.printStackTrace();
       }
   }