How to create a variable number of UIImageViews in swift

Question

My problem is that based on the number of groups a person has I want to dynamically create that many UIImageView and assign them to the view. I know how to create a single UIImageView and put it onto the view but how can I create a variable number of them since creating another with the same name seems to just overwrite the original? I tried sending the UIImageView into an Array but got an optional error.

            circleView = UIImageView(frame:CGRectMake(125, y, 75, 75))
            y+=150
            circleView.image = UIImage(named:"circle.png")
            circleView.tag = i
            self.view.addSubview(circleView)
            circleArray[i] = circleView

Mike Taverne · Accepted Answer · 2015-01-01 01:43:32Z

1

The problem is that you keep reusing the same circleView instance. When you add it to the array, you are just adding a reference to it. You then reinitialize it, which wipes it out. I also don't see where you are incrementing i. Try something like this:

var circleArray = Array<UIImageView>()
var y : CGFloat = 0.0
var i = 0
circleArray.append(UIImageView(frame:CGRectMake(125, y, 75, 75)))
var circleView = circleArray[i]
circleView.image = UIImage(named:"circle.png")
circleView.tag = i
self.view.addSubview(circleView)

y+=150
i += 1

answered Jan 1, 2015 at 1:43

Mike Taverne

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Daniel T. · Accepted Answer · 2015-01-01 01:32:32Z

0

You need to use circleArray.append(circleView)

answered Jan 1, 2015 at 1:32

Daniel T.

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2 Comments

Roosh Over a year ago

Wow can't believe I made that mistake thanks for catching it!

Roosh Over a year ago

Even with the correct syntax it seems to be throwing the same optional error. Any thoughts?

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