1 import java.io.File; 2  3 import com.iss.utils.LogUtil; 4  5 import android.os.Environment; 6 import android.os.StatFs; 7  8 /** 9 *  类名 10 *  @author 王洪贺<br/>11 *    获取手机剩余的存储空间工具类12 *    创建日期 2014年8月1日13 */14 15 public class StorageUtil {16 17     /**18     *  获取sd卡剩余存储空间19     *  @return 返回kb字节为单位的long整形数值20     */21     public static long readSDCard() {22         String state = Environment.getExternalStorageState();23         if (Environment.MEDIA_MOUNTED.equals(state)) {24             File sdcardDir = Environment.getExternalStorageDirectory();25             StatFs sf = new StatFs(sdcardDir.getPath());26             long blockSize = sf.getBlockSize();27             long blockCount = sf.getBlockCount();28             long availCount = sf.getAvailableBlocks();29            /* LogUtil.d("", "block大小:" + blockSize + ",block数目:" + blockCount + ",总大小:" + blockSize30                     * blockCount / 1024 + "KB");31             LogUtil.d("", "可用的block数目：:" + availCount + ",剩余空间:" + availCount * blockSize / 102432                     + "KB");*/33             return availCount * blockSize / 1024;34         } else {35             return 0;36         }37     }38 39     /**40      *  获取sd卡剩余存储空间41      *  @return 返回M字节为单位的long整形数值42      */43     public static long readSDCardM() {44         return readSDCard() / 1024;45     }46 47     /**48      *  获取系统剩余存储空间49      *  @return 返回以KB为单位的long整形数值50      */51     public static long readSystem() {52         File root = Environment.getRootDirectory();53         StatFs sf = new StatFs(root.getPath());54         long blockSize = sf.getBlockSize();55         long blockCount = sf.getBlockCount();56         long availCount = sf.getAvailableBlocks();57         /*LogUtil.d("", "block大小:" + blockSize + ",block数目:" + blockCount + ",总大小:" + blockSize58                 * blockCount / 1024 + "KB");59         LogUtil.d("", "可用的block数目：:" + availCount + ",可用大小:" + availCount * blockSize / 1024 + "KB");*/60         return availCount * blockSize / 1024;61     }62 63     /**64      *  获取系统剩余存储空间65      *  @return 返回以M为单位的long整形数值66      */67     public static long readSystemM() {68         return readSystem() / 1024;69     }70 71     /**72      *  判断剩余空间是否大于指定空间73      *  @param sizeMb 以MB为单位的指定大小74      *  @return 返回值true为有相应空间，false为小于对应空间75      */76     public static boolean isAvailableSpace(int sizeMb) {77         boolean hasSpace = false;78         long availableSpare = readSDCardM();79         if (availableSpare > sizeMb) {80             hasSpace = true;81         }82         return hasSpace;83     }84 85     /**86      *  判断剩余空间是否大于指定空间87      *  @return 返回值true为有100M，false为小于100M88      */89     public static boolean isAvailableSpace() {90         return isAvailableSpace(100);91     }92 }