Is NSUserName() not working in xcode6? - objective-c

Question

NSUserName() doesn't seem to be working for me in Xcode 6 while developing iOS apps.
I was using it to get the desktop directory to save a core data seed to my desktop during development.
NSString* deskStorePath = [NSString stringWithFormat:#"/Users/%#/Desktop/newMySQL.CDBStore", NSUserName()];
I had to change my code to:
#define USER_NAME #"myusername"
NSString* deskStorePath02 = [NSString stringWithFormat:#"/Users/%#/Desktop/newMySQL.CDBStore", USER_NAME];
Now NSUserName() returns nothing in Xcode 6, but had worked fine in Xcode 5.
NSString* myname = NSUserName();
NSString* myfullname = NSFullUserName();
NSLog(#"name : %# - %#",myname,myfullname);
Is it a bug?
Do I need to import a library now?
Or is there an alternative to get the current OSX username during app development?
edit: (This is the method I'm using to save the core data seed store to desktop which I then add to my dev environment)
- (void) saveSeedToDesktop
{
[self testNSUser];
NSString* myDBName = [NSString stringWithFormat:#"%#.sqlite",CD_FILE_NAME];
NSString *storePath = [[self applicationDocumentsDirectory] stringByAppendingPathComponent : myDBName];
NSString* deskStorePath = [NSString stringWithFormat:#"/Users/%#/Desktop/newMySQL.CDBStore", USER_NAME];
NSError*error;
if (![[NSFileManager defaultManager] copyItemAtPath:storePath toPath: deskStorePath error:&error]){
NSLog(#"error with path : %#",error);
}
else {
NSLog(#"Copied");
}
}
- (NSString *)applicationDocumentsDirectory {
return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES) lastObject];
}
This is a test class:
- (void) testNSUser {
NSString* myname = NSUserName();
NSString* myfullname = NSFullUserName();
NSLog(#"name : %# - %#",myname,myfullname);
__unused NSString* deskStorePathTest01 = [NSString stringWithFormat:#"/Users/this_is_my_name/Desktop/test.txt"]; //works
__unused NSString* deskStorePathTest02 = [NSString stringWithFormat:#"~/Desktop/test.txt"];
__unused NSString* deskStorePathTest03 = [NSString stringWithFormat:#"/Users/~/Desktop/test.txt"];
__unused NSString* deskStorePathTest04 = [NSString stringWithFormat:#"/~/Desktop/test.txt"];
[self fileExistsTest:deskStorePathTest01];
[self fileExistsTest:deskStorePathTest02];
[self fileExistsTest:deskStorePathTest03];
[self fileExistsTest:deskStorePathTest04];
}
- (void) fileExistsTest : (NSString*)storePath {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *pathForFile = storePath;
if ([fileManager fileExistsAtPath:pathForFile]){
NSLog(#"exists : %#",storePath);
}
else {
NSLog(#"doesnt exist");
}
}

Answer 1

We had the same issue with assets produced by running the app in the simulator. I realised that the app itself is stored below my home directory so I could access my username from that:
NSString *userName = NSUserName();
#if TARGET_IPHONE_SIMULATOR
if (userName.length == 0)
{
NSArray *bundlePathComponents = [NSBundle.mainBundle.bundlePath pathComponents];
if (bundlePathComponents.count >= 3
&& [bundlePathComponents[0] isEqualToString:#"/"]
&& [bundlePathComponents[1] isEqualToString:#"Users"])
{
userName = bundlePathComponents[2];
}
}
#endif
Obviously for development only.

Answer 2

It's working for me, on the device, anyway. It does not seem to work on the simulator.
-(id) init
{
self = [super initWithStyle:UITableViewStyleGrouped];
if(self)
{
//Custom initialization.
NSString *u = NSUserName();
NSLog(#"%#", u);
}
return self;
}
Output is:
2014-10-05 20:45:38.451 [my app business] mobile
If I'm understanding what you're trying to accomplish here, though, I think the prescribed way of initializing the Core Data store with default data may be to programmatically add it. At least, that's what I took away from the docs. I'm pretty sure they say somewhere that you're not supposed to manipulate the Core Data store file outside of the API.