User Defaults question - so confused!

[aaronsbush]

More newbie questions... I have several bool functions that if selected change the sate of a button. Here is some of the code:
if (checkboxSelected == 0){
[checkboxButton setSelected:YES];
} else {
checkboxSelected = 1;
[checkboxButton setSelected:NO];
}
}

I want a user to be able to save the state of the bool and the corresponding state of the button that is affected by the bool. I am also using the NSUserDefaults to save information from textFields elsewhere in my app using this type of code:
//Saving the default settings
NSUserDefaults *Prefs = [NSUserDefaults standardUserDefaults];
[Prefs setObject:inputField.text forKey:@"savedData"];
defaultSettings.text = @"Saved!";
//Loading the default settings
NSUserDefaults *Prefs = [NSUserDefaults standardUserDefaults];
NSString *Defaults = [Prefs stringForKey:@"savedData"];
if(Defaults == nil) {
defaultSettings.text = @"";
} else {
inputField.text = [[NSString alloc] initWithFormat:@"%@", Defaults];
}

That works great, but I have been unable to figure out the code for the bool functions. Can anyone point me to a tutorial or help clarify the code necessary? I've been Apple's dev center but now am even more confused.

Thanks in advance for your help.

[sunfire]

So If I'm reading your question right you want to know how to pull the BOOL value from the NSUserDefaults. Since NSUserDefaults is nothing more than a dictionary these should work...

NSUserDefaults *Prefs = [NSUserDefaults standardUserDefaults];
// This will set it the defaults value
[prefs setBool:YES forKey:@"myCheckBoxValue"];

// This will get the BOOL value and set the checkboxButton BOOL
[checkboxButton setSelected:[prefs boolForKey:@"myCheckBoxValue"]];


I hope this helps...

[aaronsbush]

Thanks for the help. This led me to the some code that worked for my app. Here's what I had to do in case anyone runs into a similar issue:

Controller.h
#define Defaults @"defaultSettings"

Controller.m
- (void)viewDidLoad {

NSUserDefaults *defaultPrefs = [NSUserDefaults standardUserDefaults];
checkboxButton.selected = ([[defaultPrefs objectForKey:Defaults] isEqualToString:@"checkboxSelectedYes"]) ? YES : NO;
if (checkboxButton.selected) {
[self checkboxButtonIBaction:checkboxButton];
}
}

- (IBAction)defaultIBaction:(id)sender {
NSUserDefaults *defaultPrefs = [NSUserDefaults standardUserDefaults];
NSString *setDefaults = (checkboxButton.selected) ? @"checkboxSelectedYes" : @"checkboxSelectedNo";
[defaultPrefs setObject:setDefaults forKey:Defaults];
}

I found this code in Chapter 10 of Beginning iPhone Development. I'm not sure if this is the best way but it works.