How to apply setting by toggle switch? [duplicate]

Answer 1

You can do this:

if ( self.mySwitch.on )
// do something

Here I assume mySwitch is an instance of UISwitch. It is a good idea to store switch value to NSUserDefaults so that you can retrieve it from another view.

This is how you store the value:

NSString *switchValue; 
if ( self.mySwitch.on ) 
    switchValue = @"YES";
else 
    switchValue = @"NO";

[[NSUserDefaults standardUserDefaults] setObject:switchValue forKey:@"switchValue"];
[[NSUserDefaults standardUserDefaults] synchronize];

This is how you retrieve the value:

BOOL switchState = [[[NSUserDefaults standardUserDefaults] objectForKey:@"switchValue"] boolValue];