CODEWITHSUNDEEP
iosobjective-cnsuserdefaults
Clement
Clement

Reputation: 31

Where does NSUserDefaults store data in iOS?

Where does NSUserDefaults store data in an iOS application.? Is it a good programming practice to assign many NSUserDefaults variables in an application ? or it causes any memory management issues.? When this variables are released.?

Upvotes: 1

Views: 2522

Answers (5)

Anand Nanavaty
Anand Nanavaty

Reputation: 564

Here I share you code, write down in viewDidLoad, you can get the path. 

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSLog(@"%@",paths);

Upvotes: 0

V-Xtreme
V-Xtreme

Reputation: 7333

The physical location of NSUserDefaults is : 

 /Library/Preferences/com.yourcompany.appName.plist

For more information see :

NSUserDefaults class reference

Upvotes: 1

Vishal Kardode
Vishal Kardode

Reputation: 971

It's always preferred to use NSUserDefaults for storing user specific preferences for the application. The values get stored on the device in plist format. You do not need to worry about releasing memory for NSUserDefaults stored data. They are synched with the plist once you call the [[NSUserdefaults ..] synchronize] method.

The only thing you need to worry about is not to use NSUserDefaults for storing sensitive information like passwords. As this plist can be accessed by directly connecting device to mac and accesssing application space (sandbox) using third party softwares available.

Upvotes: 1

abhi
abhi

Reputation: 620

Users/username/Library/Application Support/iPhone Simulator/5.0/Applications/your app unique id/Library/com.appname

This is the path where the data(NSUserDefaults) is stored when using Simulator.

When you remove the app from the device the data in the NSUserDefaults will be erased .

Upvotes: 2

SRay
SRay

Reputation: 286

It stores in the Directory structure of the device. I use NSUSerDefaults to store variables that need not be very secure like username, address etc. For more secure information (eg:password) you would use keychain to store the information.

Upvotes: 2

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