获取SD卡的内存空间大小

1        //获得SD卡空间的信息 2         File path=Environment.getExternalStorageDirectory(); 3         StatFs statFs=new StatFs(path.getPath()); 4         long blocksize=statFs.getBlockSize(); 5         long totalblocks=statFs.getBlockCount(); 6         long availableblocks=statFs.getAvailableBlocks(); 7          8         //计算SD卡的空间大小 9         long totalsize=blocksize*totalblocks;10         long availablesize=availableblocks*blocksize;11         12         //转化为可以显示的字符串13         String totalsize_str=Formatter.formatFileSize(this, totalsize);14         String availablesize_strString=Formatter.formatFileSize(this, availablesize);