How do I save a UISlider value?

How could I save the value of a UISlider ?I tried this, but it didn't work:

-(IBAction)save {  
        slider1i = slider1.value;
        NSUserDefaults *slider1save = [NSUserDefaults standardUserDefaults];
        [slider1save setInteger:slider1i forKey:@"slid开发者_开发问答er1key"];
        [slider1save synchronize];
}

slider1i is a NSinteger, and slider1 is the UISlider ...

Can you help-me ?

As user 698952 said, UISlider's value property is a float. But i'd instead use setFloat like this:

    slider1i = slider1.value;
    NSUserDefaults *slider1save = [NSUserDefaults standardUserDefaults];
    [slider1save setFloat:slider1i forKey:@"slider1key"];
    [slider1save synchronize];

slider1.valueis float value so you first need to convert it in NSString or NSNumber inorder to save it ..... that makes it a object

-(IBAction)save {  
        NSNumber *sliderValue = [NSNumber numberWithFloat:slider1.value];
        NSUserDefaults *slider1save = [NSUserDefaults standardUserDefaults];
        [slider1save setObject:sliderValue forKey:@"slider1key"];
        [slider1save synchronize];
}

thanks