how can I expandable a view in swift

Question

Im new in swift. In android, I using fragment to add or remove childview from parent view. I would like to expand an view when I switch a switch to on, and to collapse when I switch the switch to off. At the same time all the other elements I have in my design have to move down or up.

And I dont want to use Expandable table view.

Here is how the layout looks like when the switches are OFF

And here is how the layout looks like when the switches are ON:

I dont know how to make it, please help me.

I change height of collection view to 0, but position of other under view not change.

UIView.animateWithDuration(0.3, delay: 0.0, options:UIViewAnimationOptions.TransitionNone, animations: { () -> Void in

        if(!self.temp)
        {
            self.collection_seat.frame.size.height = 0
            self.temp = true
        }
        else
        {

            self.collection_seat.frame.size.height = 128

            self.temp = false
        }
        }, completion: { (finished: Bool) -> Void in

    })

score 1 · Accepted Answer · answered Jul 14 '16 at 03:04

1

Make the view you want to open to inside a view and use autolayout constraints as if it was open. Then after you've made it, make the height constraint of the containing view 0. When the switch turns on, expand the height constraint to whatever size it is supposed to be.

answered Jul 14 '16 at 03:04

Sam

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I use this way but the other views under switch still in there, it not run down – Kul Ken Jul 14 '16 at 04:44
Are they properly auto constrained to the views above? Can you show us some code/screenshots of what you have done – Sam Jul 15 '16 at 04:31
I have edit my post and add some code. When height = 0: http://i.stack.imgur.com/lUECm.png and expand: http://i.stack.imgur.com/ONC3w.png constrain http://i.stack.imgur.com/SH2XV.png – Kul Ken Jul 18 '16 at 07:55
You are setting the frames height equal to zero, not the height constraint. Changing a views frame will break the constraints on it – Sam Jul 18 '16 at 23:45
2

Create an IBOutlet for the height constraint. Where you set frame.size.height = 0, instead change the IBOutlets .constant =0 – Sam Jul 20 '16 at 06:56

score 0 · Answer 2 · answered Jul 18 '16 at 08:13

0

Better to keep things in Table View. Refer this example. Maintain plist file to expand and collapse.

http://www.appcoda.com/expandable-table-view/

answered Jul 18 '16 at 08:13

Hasya

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The question says `And I dont want to use Expandable table view.` – Konstantinos Natsios Oct 27 '20 at 09:57

how can I expandable a view in swift

2 Answers2