获取SDCard存储大小

File path = Environment.getDataDirectory();//手机内置空间

1、获取SD卡的路径
File path = Environment.getExternalStorageDirectory();

2、获取扇区
StatFs stat = new StatFs(path.getPath());

3、获取一个扇区大小
long blockSize = stat.getBlockSize();

4、获取空闲的扇区
long availableBlocks = stat.getAvailableBlocks();

5、获取总空间的扇区数
long all = stat.getBlockCount();

String avail = Formatter.formatFileSize(this, availableBlocks * blockSize);//获取总空间数
String all_count = Formatter.formatFileSize(this, all * blockSize);//获取空闲的内存

view.setText("空闲的内存:" + avail +" 总空间数:" + all_count);