Hi,
Is there a method to store the state of a UISwitch with NSUserDefaults?
If the state is ON I'd like to set some action...
Can I do this?
Thanks!
views:
65answers:
2
+1
A:
To save:
- (void)mySwitchAction:(id)sender
{
if (sender == mySwitch) {
BOOL mySwitchValue = [ sender isOn ];
NSString *tmpString = mySwitchValue ? @"1" : @"-1" ;
NSUserDefaults *myNSUD = [NSUserDefaults standardUserDefaults];
[ myNSUD setObject:tmpString forKey: @"mySwitchValueKey" ];
[ myNSUD synchronize ];
// do other stuff/actions
}
}
To initialize from saved state:
NSUserDefaults *myNSUD = [NSUserDefaults standardUserDefaults];
NSString *tmpString = [ myNSUD stringForKey: @"mySwitchValueKey"];
BOOL mySwitchValue = NO; // or DEFAULT_VALUE
if (tmpString != nil) {
mySwitchValue = ( [ tmpString intValue ] == 1 );
}
[mySwitch setOn: mySwitchValue];
hotpaw2
2010-08-27 17:49:11
And can I use a method without a declaration? I must save the state in a controller and after verify the state and do some action in another controller... How can I do this?
Matthew
2010-08-27 21:47:58
That sounds like a new and different question.
hotpaw2
2010-08-28 04:38:42
@Matthew: I think that is easy, you can just get the state out of the userDefaults in another view controller. Look at my answer for a simpler answer, without method declaration at all:)
vodkhang
2010-08-30 09:03:49
+1
A:
The answer of hotpaw2 is good and can also work well for big segmented control (more than 2 states). But if you only want to store 2 states, why not just use [setBool:forKey:] like this
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
[userDefaults setBool:switchState forKey:@"mySwitchValueKey"];
and get it out:
BOOL swichState = [userDefaults boolForKey:@"mySwitchValueKey"];
which imo, is much much simpler, no if else code at all, no string converting back and for
vodkhang
2010-08-30 09:02:32