How To Find Available Disk Space of iOS Device?

Hello, iOS fellows;
Hope life is as bright as the retina display of iPhone 4S (:

Well, its a Valentine’s night and I’m writing this blog post at mid night, thinking that may be someone get some benefit with these few lines and saved his/her time to googling here and there; Ahh what a priorities of an engineer? (:

I was working on an iOS application where I had needed to determine the available disk space on user’s device, to warn the user about storage.

Here is the code I used that finds out the space in bytes:


+(void)calculateSpaceOnDisk {
   NSError *error = nil;
   NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
   NSDictionary *dictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:[paths lastObject] error: &amp;error];
   if (dictionary) {
      float freeSpace  = [[dictionary objectForKey: NSFileSystemFreeSize] floatValue];
      float totalSpace = [[dictionary objectForKey: NSFileSystemSize] floatValue];
   } else {
      NSLog(@&quot;Error Obtaining File System Info: Domain = %@, Code = %@&quot;, [error domain], [error code]);
   }
}//end calculateSpaceOnDisk:

The highlighted lines are soul of this post.

Note that I’m storing all of my application’s data in Library/Cache directory, not in /Document; Not sure right now how it may affect the above piece of code;

Stay bright;

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Aasim Naseem

Hey, Thanks for your interest. I’m a PMP, AWS Solutions Architect, and Scrum Master certified professional with 17+ years of hands-on experience leading projects, building teams, and helping organizations deliver software solutions better, faster, and smarter.

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