问题描述:

I have a code I am writing and its going well but I am having trouble with UISliders...specifically...setting values. I have used the sliders and now I want to reset them to the original state (0 to 10 with a value of 0 and the slider all the way to the left. I have...

@IBOutlet weak var redHorizontalSlider: UISlider!


Inside viewDidLoad:

 redHorizontalSlider!.minimumValue = 0.0

redHorizontalSlider!.maximumValue = 1.0

redHorizontalSlider!.setValue(0.0, animated: false)

and when I print the values its giving me a nil and an error. I have played around with ! and ? in the declaration of the Object and the calls but to no avail.

I am new to Swift and I am learning as I go. I just need some expertise here. Thanks in advance.

网友答案:

This error is going to happen because the value of your slider is nil. Check your connections to make sure that your storyboard slider is connected to the slider variable.

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