floatValue for CGFloat

Question

Hi Everyone:

I have a NSSlider that is attempting to convert a regular float into a CGFloat. The code that I am using:

CGFloat testing = [mainSlider floatValue];

However this simply makes the testing variable "0.00" when I attempt to log it.

NSLog(@"%f", testing);

Does anyone have any ideas as to why this would happen? Thanks for any help.

Answer 1

1. check that mainSlider isn't nil

2. try this just in case (can't remember if CGFloat is a double or not):

   NSLog(@"%f", (double)testing);

3. Check that the variable isn't being shadowed like this:

   CGFloat testing = 0.0;
   if(YES){
       CGFloat testing = [mainSlider floatValue];
       //should be: testing = [mainSlider floatValue];
   }
   NSLog(@"testing = %f", testing); //this will print "testing = 0.000000"
   

Answer 2

I don't have enough rep to comment, but what's your expected value? Have you moved the slider and expecting a different result?