nsuserdefaults

I am trying to persist the UISwitch state in my settings view of my application. Basically it is a UITableView and contains a few switches to get the user preferences. The below code explains how the switches are constructed (only one switch construct is given below, others are also constructed the sameway). if (cell == nil) { cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:SomeIdentifierB] autorelease]; if (syncStartupSwitch) { syncSwitch.on = YES; }else { syncSwitch.on = NO; } [syncSwitch addTarget:self action:@selector(syncAtStartup:) forControlEvents

I am trying to implement "Add to Favorites" functionality using NSUserDefaults. So far I have written following code. - (void)favouriteButtonClicked:(id)sender { favselected = !favselected; // favselected is BOOL property MyAppDelegate *appDelegate = (MyAppDelegate *)[[UIApplication sharedApplication] delegate]; NSString* viewname = @"custom"; if(favselected) { [favButton setBackgroundImage:[UIImage imageNamed:@"selected.png"] forState:UIControlStateNormal]; [appDelegate addTOFavourites:self.ViewID viewType:self.ViewType]; } else { [favButton setBackgroundImage:[UIImage imageNamed:@"unselected

I've a mutable dictionary (in form of [Int:Int]) and want that to save it. I would use NSUserDefaults like that: var myDic: NSMutableDictionary = [:] myDic = [1:2] NSUserDefaults.standardUserDefaults().setObject(myDic, forKey: "myDic") but with that I get an error: Thread 1: signal SIGABRT I have no idea why. setObject(_:forKey:) can’t accept Dictionary with a key which is integer type. The method requires property-list objects, but myDic = [1:2] is not property-list object. There are two documents about it. setObject(_:forKey:) of NSUserDefaults The value parameter can be only property list

I am not able to get NSUserDefaults concepts properly. Is that a database of plist file ? It's a key-value store that is persisted between restarts of your application. How it's implemented has little bearing on how you use it. I don't know if it's different on the iPhone OS (which i don't believe) but in Mac OS X is it a plist file in your Library/Preferences folder. Pretty sure it's the same on iPhone OS/iOS 来源： https://stackoverflow.com/questions/3178115/iphones-nsuserdefaults-is-a-database-or-plist

I have one application that sets preferences. It uses those prefs, and so does another application. When I use the following code in the second application, it reads the preferences correctly once. NSUserDefaults* settings = [NSUserDefaults standardUserDefaults]; [settings addSuiteNamed:@"com.WVS.Wrestling-Tools"]; [settings synchronize]; // this just a shot in the dark.. didn't work [self setScoreboardIndex:[settings integerForKey:@"matName"]]; On subsequent calls of the same code, I get the [settings integerForKey:@"matName"] is always the value that was first read. In the first application,

My iOS application needs to store an MKPolyline inside of an NSUserDefault . I've been doing a lot of research, and I now know that: NSUserDefaults are a subclass of NSCoder MKPolyline is not a subclass of NSCoder As a result, it is rather difficult to save a polyline to nsuserdefaults . I have attempted to convert the MKPolyline into NSData: NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; NSData *data = [NSKeyedArchiver archivedDataWithRootObject:routeLine]; // routeLine is an MKPolyline [defaults dataForKey:@"key"]; [defaults synchronize]; When I try to convert the polyline

Hi I want to save and retrieve NSObject class using NSUserDefaults for that I wrote below code but I am getting exception like below Terminating app due to uncaught exception ' NSInvalidArgumentException ', reason: 'Attempt to insert non-property list object for key DATA' For saving :- SavingBean*savingbean = [[SavingBean alloc]init]; [savingbean savingData:userName.text :passWord.text]; NSUserDefaults * defaults = [[NSUserDefaults alloc]init]; [defaults setObject:savingbean forKey:@"DATA"]; For retrieving:- defaults = [[NSUserDefaults alloc]init]; savingbean = [defaults objectForKey:@"DATA"];