查询当前设备的总空间 剩余空间 用户占用空间

有我们需要知道设备磁盘的总空间 剩余空间 以及用户自己占用的空间

#include <sys/param.h>

#include <sys/mount.h>

//获取剩余磁盘空间

- (NSString *) freeDiskSpaceInBytes{

   struct statfs buf;

   long long freespace = -1;

   if(statfs("/var", &buf) >=0){

        freespace = (float)(buf.f_bsize * buf.f_bfree);

    }

   return [NSStringstringWithFormat:@"手机剩余存储空间为:%qi MB" ,freespace/1024/1024];

}

//获取总的磁盘空间 1

- (NSString *) totalDiskSpaceInBytes{

   float totalSpace = 0.0f;

   NSError *error = nil;

    NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);

    NSDictionary *dictionary = [[NSFileManagerdefaultManager] attributesOfFileSystemForPath:[pathslastObject] error: &error];

   if (dictionary) {

       NSNumber *fileSystemSizeInBytes = [dictionary objectForKey: NSFileSystemSize];

        totalSpace = [fileSystemSizeInBytesfloatValue];

    }else {}

   return [NSStringstringWithFormat:@"%0.2f MB" ,totalSpace/1024/1024];

}

//获取总的磁盘空间 2

- (NSString *)getTotalDiskSpaceInBytes

{

    NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);

   struct statfs tStats;

    statfs([[paths lastObject] cStringUsingEncoding:NSUTF8StringEncoding], &tStats);

   float totalSpace = (float)(tStats.f_blocks * tStats.f_bsize)/1024/1024;

   float freeSpace = (float)(tStats.f_ffree * tStats.f_bsize)/1024/1024;

   return [NSStringstringWithFormat:@"%f,%f",totalSpace,freeSpace];

}

//获取用户占用磁盘空间

- (NSString *) usersSpaceInBytes{

    NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);

   NSString *userpaths = [[paths lastObject] substringToIndex:([[paths lastObject] length] - 10)];

   NSLog(@"%f",[selffolderSizeAtPath:userpaths]);

}

//单个文件的大小

- (longlong) fileSizeAtPath:(NSString*) filePath{

    NSFileManager* manager = [NSFileManagerdefaultManager];

   if ([manager fileExistsAtPath:filePath]){

        return [[managerattributesOfItemAtPath:filePath error:nil]fileSize];

    }

   return 0;

}

//遍历文件夹获得文件夹大小，返回多少M

- (float ) folderSizeAtPath:(NSString*) folderPath{

    NSFileManager* manager = [NSFileManagerdefaultManager];

   if (![manager fileExistsAtPath:folderPath])return 0;

   NSEnumerator *childFilesEnumerator = [[managersubpathsAtPath:folderPath] objectEnumerator];

   NSString* fileName;

   long long folderSize =0;

   int i = 0;

   while ((fileName = [childFilesEnumerator nextObject]) != nil){

        i ++;

       NSString* fileAbsolutePath = [folderPath stringByAppendingPathComponent:fileName];

        folderSize += [selffileSizeAtPath:fileAbsolutePath];

    }

   return folderSize/(1024.0*1024.0);

}