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;	}}