Android - 获取SD卡的内存空间大小

获取SD卡的内存空间大小

        //获得SD卡空间的信息
         File path=Environment.getExternalStorageDirectory();
         StatFs statFs=new StatFs(path.getPath());
         long blocksize=statFs.getBlockSize();
         long totalblocks=statFs.getBlockCount();
         long availableblocks=statFs.getAvailableBlocks();

         //计算SD卡的空间大小
         long totalsize=blocksize*totalblocks;
         long availablesize=availableblocks*blocksize;

         //转化为可以显示的字符串
         String totalsize_str=Formatter.formatFileSize(this, totalsize);
         String availablesize_strString=Formatter.formatFileSize(this, availablesize);