nsuserdefaults

I am struggling to figure out how to do an if statement with a bool saved to NSUserDefaults using Swift. I believe I know how to save the bool to NSUserDefaults but a confirmation in that would be greatly appreciated. This is the Objective-C code I am trying to figure out how to use with swift. if(![[NSUserDefaults standardUserDefaults] boolForKey:@"onoroff"]) { [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"onoroff"]; } this is what I have so far in Swift... if NSUserDefaults.standardUserDefaults().objectForKey("onoroff") != nil{ NSUserDefaults.standardUserDefaults().setBool

I am trying to implemen "Add to Favorites" functionality using NSMutableDictionary as I have to add multiple key-values. The following addToFavourites method always display Count=0 even after adding object to dictionary. I read this and getting nsdefaults into mutabledictionary(instead of mutable array) and setting resulted dictionary back to nsdefaults but not sure what's the problem. Any help would be really appreciated. Thank you. Edited: From this I came to know that I have to move data around mutable and immutable dictionary and then it worked fine! but still not able to synchronize

I found some resources on reading the NSUserDefaults of another application. Objective-C NSUserDefaults caching prevents another app from accurately reading changes NSUserDefaults: Is it possible to get userDefaults from another app? Apparently, it's not possible. However the questions firstly relate to iOS, and secondly the two apps are completely different. I have a LaunchAtLogin helper app. But it does some other tasks too. Therefore, the helper app should run always, but only start the main app if the BOOL in the NSUserDefaults is set. Is there a way I can achieve that? Since 10.7.4 you

In my App i am using NSUserDefaults to save some data. I have a doubt regarding this when i update the app in App Store, Will The Data in NSUserDefaults will remain same or it is removed. No, it will not be erased on updating NSUserDefaults will not be erased during update, but it will be removed when you uninstall an app. 来源： https://stackoverflow.com/questions/8208485/does-nsuserdefaults-get-erased-when-an-app-gets-updated

I am developing an iPhone application, I encounter a problem on the iOS4 because of multi task. This application has the default settings defined in a Settings.bundle. If I run my application then I left it (so it goes in the background). I'll change the settings and restarts the application (it comes out of standby and method: applicationDidBecomeActive () is called). Values in NSUserDefault are not updates, but when I leave the application and relaunch. The values are good. Does someone experience the same problem as me? Is what I'm doing something wrong? Thank you for your advice / help. I