//获取可用容量
+ (NSNumber *)freeDiskSpace
{
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:NSTemporaryDirectory()];
NSDictionary *results = [fileURL resourceValuesForKeys:@[NSURLVolumeAvailableCapacityForImportantUsageKey] error:nil];
return results[NSURLVolumeAvailableCapacityForImportantUsageKey];
//下面在iOS11.3的系统获取可用空间出现异常
// NSDictionary *fattributes = [[NSFileManager defaultManager] attributesOfFileSystemForPath:NSHomeDirectory() error:nil];
// return [fattributes objectForKey:NSFileSystemFreeSize];
}
ます。https://www.jianshu.com/p/3eee2c2a73b6で再現