How Can I Store A String So That I Can Use It The Next Time My App Runs?

hank863 · 02-22-2009, 05:39 PM

My application doesn't have "settings", but I do need to store 3 strings that will not be deleted as soon as my app closes. I need to be able to edit the strings and then store them so that my app can use them next time it runs to monitor the user's completion of a task. I'm confused about "Settings.bundle". Is that even what I need? Please be thorough in explanations. I'm new to Mac OS X and iPhone development. Thanks

Bertrand21 · 02-22-2009, 05:44 PM

Check out NSUserDefaults its what you want

**Steaps** · 02-22-2009, 05:57 PM

iPhone Programming Tutorial - Saving/Retrieving Data Using NSUserDefaults | iCodeBlog

hosam · 02-22-2009, 07:17 PM

Quote:

Originally Posted by hank863

My application doesn't have "settings", but I do need to store 3 strings that will not be deleted as soon as my app closes. I need to be able to edit the strings and then store them so that my app can use them next time it runs to monitor the user's completion of a task. I'm confused about "Settings.bundle". Is that even what I need? Please be thorough in explanations. I'm new to Mac OS X and iPhone development. Thanks

To save when your application is about to exit

Code:

        NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
	[prefs setInteger:myNumber1 forKey:@"myNumber1"];
        [prefs setInteger:myNumber2 forKey:@"myNumber2"];
	[prefs synchronize];

And to load them

Code:

        NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
	 myNumber1 = [prefs integerForKey:@"myNumber1"];
	myNumber2 = [prefs integerForKey:@"myNumber2"];

hank863 · 02-22-2009, 07:42 PM

Thank you very much everyone! This is exactly what I need. I know it's off topic, but could one of you please give me the line of code for checking to see whether a NSString contains a set of characters?

hank863 · 02-22-2009, 07:48 PM

Just found this

Code:

 [myString rangeOfString:@"bla"].location != NSNotFound

If you have a better way, please post it. Thanks again for your help.

**Steaps** · 02-22-2009, 07:50 PM

Quote:

Originally Posted by hank863

Just found this

Code:

 [myString rangeOfString:@"bla"].location != NSNotFound

If you have a better way, please post it. Thanks again for your help.

Thanks! I hope this works, i don't need it now so i'm not testing it but i will probably need it in the future.