How to Call NSUserDefault Value To Another View Controller?

Question

// I wrote this function in Separate class file:

-(void)Display
{
    NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
    NSInteger *Position = [prefs integerForKey:@"currentlevel"];
    NSLog(@"------->%i",Position);
    //This NSLog is returning Value 6  
    [prefs synchronize];    
}

//In my viewController I am calling this function using object I have created for my class

@interface ViewController ()
{
    //display My class name
    //disp is object fro my class
    display *disp;   
}

@implementation ViewController

- (void)viewDidLoad
{ 
    disp = [[display alloc]init];  
    [disp Display];
    NSLog(@"%i",[disp Position]);
    //this NSLog statement returning value 0
    [super viewDidLoad];
}

If anyone has any solution please help me.

You should make an utility class just for its class methods. What you are doing is wrong in many ways. — Desdenova, Jul 19 '13 at 11:19
What is `Position`? Is it a local variable? a property? a method? — Amar, Jul 19 '13 at 11:27
A solution to what? I don't see a question. I do see you didn't show your code for the method `Position` which is pretty important to understand your code. — Stephen Darlington, Jul 19 '13 at 11:38
http://stackoverflow.com/questions/8498213/how-to-implement-nsuserdefault-to-access-through-multiple-views — Mital, Jul 19 '13 at 12:30
@Amar Position is my Global Variable property and i synthesized it in my implementation file — Peer Mohamed Thabib, Jul 22 '13 at 01:57

score 3 · Accepted Answer · answered Jul 19 '13 at 11:18

Try to implement like this..

@implementation ClassA

      - (void)viewDidLoad
        {
            [super viewDidLoad];
            // Do any additional setup after loading the view, typically from a nib.
            [[NSUserDefaults standardUserDefaults]setInteger:100 forKey:@"currentlevel"];
            [[NSUserDefaults standardUserDefaults] synchronize];
        }

    @end

    @implementation ClassB

    - (void)viewDidLoad
    {
        [super viewDidLoad];
        // Do any additional setup after loading the view, typically from a nib.
           int B = [[[NSUserDefaults standardUserDefaults] integerForKey:@"currentlevel"] integerValue];

         NSLog(@"Interger Value %d",b);
    }

score 1 · Answer 2 · answered Jul 19 '13 at 12:17

1

Why not get the value from NSUserDefaults in the view controller itself? Like this:

    -(void) viewDidLoad
    {
      [super viewDidLoad];
      NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
      NSInteger *Position = [prefs integerForKey:@"currentlevel"];
      NSLog(@"------->%i",Position);
    }

answered Jul 19 '13 at 12:17

iphondroid

498
7
19

I want to fallow MVC pattern so i created separate class – Peer Mohamed Thabib Jul 22 '13 at 01:55

score 1 · Answer 3 · edited Jul 19 '13 at 12:33

1

If you want to set an integer value then use this statement:

[[NSUserDefaults standardUserDefaults] setObject:[NSNumber numberWithInt:highScore] forKey:@"kHighScore"];

If you want to get that value back then use this statement:

NSInteger highScore = [[[NSUserDefaults standardUserDefaults] objectForKey:@"kHighScore"] intValue];

edited Jul 19 '13 at 12:33

andrewsi

10,807
132
35
51

answered Jul 19 '13 at 12:27

Mital

241
1
5

How to Call NSUserDefault Value To Another View Controller?

3 Answers3