package com.xiaobing.zhbj.utils;import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;import android.os.Environment;
/*** * * @author ：QQ:986945193* * @新浪微博 ：http://weibo.com/mcxiaobing* * @version V1.0正式版* * SDCard工具类**/
public class SDCardUtils {/*** 判断SD卡是否挂载* * @return*/public static boolean isMounted() {return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);} // 得到SD卡的根路径public static String getSDPath() {if (isMounted()) {return Environment.getExternalStorageDirectory().getAbsolutePath();}return null;}// 将文件保存到SD卡中public static boolean saveFileIntoSDCard(byte[] data, String path,String fileName) {if (isMounted()) {BufferedOutputStream bos = null;try {String filePath = getSDPath() + File.separator + path;File file = new File(filePath);if (!file.exists()) {file.mkdirs();}bos = new BufferedOutputStream(new FileOutputStream(new File(file, fileName)));bos.write(data, 0, data.length);bos.flush();return true;} catch (Exception e) {e.printStackTrace();} finally {if (bos != null) {try {bos.close();} catch (IOException e1) {e1.printStackTrace();}}}}return false;}// 从SD卡中取出存储的文件public static byte[] getFileFromSDCard(String filePath) {if (isMounted()) {File file = new File(filePath);BufferedInputStream bis = null;ByteArrayOutputStream baos = null;if (file.exists()) {try {baos = new ByteArrayOutputStream();bis = new BufferedInputStream(new FileInputStream(file));int len = 0;byte[] buffer = new byte[1024 * 8];while ((len = bis.read(buffer)) != -1) {baos.write(buffer, 0, len);baos.flush();}return baos.toByteArray();} catch (Exception e) {e.printStackTrace();} finally {if (bis != null) {try {bis.close();baos.close();} catch (IOException e) {e.printStackTrace();}}}}}return null;}
}