Question

hi i want create an application and my app remember last user action ,, it means user find himself in the same page as he was last time he ran the application .
how could implement that ?

Answer 1

you can use the NSUserDefaults to store some variable for your application to retrieve them after a close of the application.
For exemple:

// Set the name of the view
[[NSUserDefaults standardUserDefaults] setObject:@"viewName" forKey:@"lastViewName"];

To retrieve the last action of the user:

// Retrieve the last view name
NSString *lastViewName = [[NSUserDefaults standardUserDefaults] stringForKey:@"lastViewName"];

But you can add other than a string.

---

Edit:

define some constant like that on a header file:

#define HOME_VIEW 0
#define VIEW1 1
#define VIEW2 2

When a view is load you store the current constant view to your standardUserDefaults. For example the view1:

- (void)viewDidLoad {
    [super viewDidLoad];

    // Set the name of the view
    [[NSUserDefaults standardUserDefaults] setObject:[NSNumber numberWithInt:VIEW1] forKey:@"lastView"];

}

When you application did load you retrieve your constant and you load your appropriate view:

- (void)applicationDidFinishLaunching:(UIApplication *)application {
   // Retrieve the last view name
   NSInteger constantView = [[NSUserDefaults standardUserDefaults] integerForKey:@"lastView"];

   switch(constantView) {
      case HOME_VIEW : //load your UIViewController
          break;
      case VIEW1 : // load your VIEW1
          break;
      //...
   }
}

I haven’t tested this code, but it’s something like that to do.