iPhone slider save user preference

I need to save a slider preference in my Settings.bundle.

I'm using the following code to write to the Settings.bundle:

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setInteger:mySlider.value forKey:@"TimerSliderKey"];
[defaults synchronize];

And the following code to read from the Settings.bundle:

NSUserDefaults *defaults2 = [NSUserDefaults standardUserDefaul开发者_运维问答ts];
int valueForSlider = [defaults2 integerForKey:@"TimerSliderKey"];
NSLog(@"The saved slider value is %@" , valueForSlider);

This code does not work. Can someone give me some replacement code that I could use?

---

Your problem is here:

NSLog(@"The saved slider value is %@" , valueForSlider);

You need to use the %d format specifier, %@ is the format specifier to send the description message to the argument.

NSLog(@"The saved slider value is %d" , valueForSlider);

Here's a list of format specifiers:

See the String Programming Guide for more information.

---

The other, and perhaps the real, problem is that UISlider's value ranges from 0.0 to 1.0 by default. Storing it as an integer, you will only ever see 0 or 1 due to truncation.

You should store it as a floating point instead to fully preserve the value of the slider.

---

use this one...

[**yourslider** addTarget:self action:@selector(sliderValueChanged:)
                           forControlEvents:UIControlEventValueChanged];

if ([[NSUserDefaults standardUserDefaults]floatForKey:@"value"]) {

    yourslider.value= [[NSUserDefaults standardUserDefaults]floatForKey:@"value"];

  }


**--save your value in this method**

-(IBAction)sliderValueChanged:(UISlider *)sender
{

    NSLog(@"slider value = %f", sender.value);


   [[NSUserDefaults standardUserDefaults]setFloat:sender.value forKey:@"value"];

}