Device free space and sandbox space used

I开发者_C百科'm trying to get the free space on the device and the amount of space my sandbox is using. Any thoughts?

Thanks, Rick

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In Objective-C you can get the available file system space with NSFileManager:

NSFileManager* filemgr = [NSFileManager defaultManager];

NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docDirectory = [paths objectAtIndex:0];            

NSDictionary* fsAttr = [filemgr attributesOfFileSystemForPath:docDirectory error:NULL];

unsigned long long freeSize = [(NSNumber*)[fsAttr objectForKey:NSFileSystemFreeSize] unsignedLongLongValue];

To get the amount of space your app is using read this question: Calculate the size of a folder

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this is close, but not perfect.

NSFileManager a = NSFileManager.DefaultManager;
NSError _error;

string _databaseFolder = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), "..");
NSDictionary _b =  a.GetFileSystemAttributes(_databaseFolder,out _error);
NSObject _d =  NSObject.FromObject("NSFileSystemFreeSize");
NSObject _c =  _b.ObjectForKey(_d);

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This is the direct translate from @phix23 to MonoTouch (Sorry for the length of the lines, cocoa is too verbose):

var docDir = NSSearchPath.GetDirectories(NSSearchPathDirectory.DocumentDirectory,NSSearchPathDomain.User, true)[0];
var freeSpace = NSFileManager.DefaultManager.GetFileSystemAttributes(docDir).FreeSize;