iOS 获取手机剩余空间和总空间

• (NSString *)getDivceSize{

  NSDictionary *fattributes = [[NSFileManager defaultManager] attributesOfFileSystemForPath:NSHomeDirectory() error:nil];

  NSNumber *freeber = [fattributes objectForKey:NSFileSystemFreeSize];
  NSNumber *maxber = [fattributes objectForKey:NSFileSystemSize];

  long long freespace = [freeber longLongValue];
  long long maxspace = [maxber longLongValue];

  NSString * sizeStr = [NSString stringWithFormat:@"剩余空间%0.1fG / 共%0.1fG",(double)freespace/1024/1024/1024,(double)maxspace/1024/1024/1024];
  return sizeStr;

}