Set view width size programmatically base on it's subview

Question

I have a customView contain some subViews like this:

I have set messageLabel trailing constraint to it's superView = 4

I want my customView width constraint will be set automatically base on messageLabel. If I create customView like this:

FlyingMessageDisplayView(frame: CGRect(x: UIScreen.main.bounds.width, y: 0, width: 100, height: 40))

how to set it's width size because messageLabel can be long or sort.

you need to it manually, first find width of label with it text and set view size accordingly see this how to find width http://stackoverflow.com/questions/1340667/pixel-width-of-the-text-in-a-uilabel — Prashant Tukadiya, Jan 17 '17 at 04:58
Why would you want to pass the frame if you want it to automatically resize? — Rikh, Jan 17 '17 at 05:01

score 0 · Accepted Answer · answered Jan 17 '17 at 10:20

I set my customView width size base on it's sub label like this

customView.frame.size.width = customView.messageLabelWidth + 50 // 50 here is for imageView width and some spacing.

where messageLabelWidth in FlyingMessageDisplayView

var messageLabelWidth: CGFloat {
    get {
        return messageLabel.intrinsicContentSize.width
    }
}

It will calculate the width of label first base on text length, then update width of customView

1 Answers1