FloatValue for CGFloat

Question

I have an NSSlider that is trying to convert a regular float to CGFloat. The code I'm using is:

CGFloat testing = [mainSlider floatValue];

However, this simply makes the test variable "0.00" when trying to register it.

NSLog(@"%f", testing);

Does anyone have any idea why this will happen? Thanks for any help.

Answer 1

• make sure mainSlider is not nil

• try this just in case (I don’t remember whether CGFloat is double or not) :

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

• Make sure the variable is not obscured as follows:

  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"