获取sd或者手机内存状态

private String getstate(File path) {

StatFs stat = new StatFs(path.getPath());// 获取一个磁盘对象

long blocksize = stat.getBlockSize();// 获得一个扇区的代销

int tatalblocksize = stat.getBlockCount();

int availableblcok = stat.getAvailableBlocks();

String tatalmenory = Formatter.formatFileSize(this, tatalblocksize

* blocksize);

String ablemenory = Formatter.formatFileSize(this, availableblcok

* blocksize);

return "总空间" + tatalmenory + "/n" + "可用" + ablemenory;

}