Question

I want to save the current tab the user is in when the user quits the application, so I can load the application with that tab highlighted when the user re-enters the app.

I presume I use the following method within my app delegate to save the current tab

- (void)applicationWillTerminate:(UIApplication *)application

but how do I gain access to the current tab – and what would be the best way to reload it?

Answer 1

In applicationWillTerminate, save the selectedIndex of the tabbarcontroller to your defaults.

  [[NSUserDefaults standardUserDefaults] setInteger:[tabBarController selectedIndex] forKey:@'tabBarIndex']; 

Then on startup, read in index from NSDefaults and then set the tab.

    setIndex = [[NSUserDefaults standardUserDefaults] objectForKey:@'tabBarIndex'];     [[NSUserDefaults standardUserDefaults] synchronize]; 

setIndex is an NSUInteger. Then set the TabBarController in your viewDidLoad like so:

[tabBarController selectedIndex:setIndex]; 

This is from memory, so you’ll need to try it out, but this is the general approach.

Cheers, Jordan