How to make UISlider's “track” invisible?

Question

I\'m trying to emulate Apple\'s \"Slide to Unlock\" feature in my application. I get to this point (image below), but as you can see the UISlider\'s \"track\" is visible and is

Answer 1

here's an even easier way. No need to create images, just instantiate an empty UIImage class :P

UIImage *clearImage = [[UIImage alloc] init];
[self.slider setMinimumTrackImage:clearImage forState:UIControlStateNormal];
[self.slider setMaximumTrackImage:clearImage forState:UIControlStateNormal];