For this you’ll want to use computed properties. let isn’t the right choice
since these aren’t constants—they change as the view resizes. Instead, computed
properties using var will work:
extension UIView {
var width: CGFloat { return frame.size.width }
}
That extension will add a width property to any UIView.
Jeff Kelley
slauncha...@gmail.com | @SlaunchaMan <https://twitter.com/SlaunchaMan> |
jeffkelley.org <http://jeffkelley.org/>
> On Apr 27, 2017, at 1:28 PM, Mohamed Salah via swift-users
> <swift-users@swift.org> wrote:
>
> Thanks for your support … here you are the piece of code
>
>
>
> import UIKit
>
> class FaceVeiw: UIView {
>
> /* it make error to use frame or bounds outside any functions WHY WHY
> WHY */
>
> let width = frame.size.width // (Gives an ERROR) frame property is not
> known here
> let width2 = bounds.size.width // Gives an ERROR) bound property is not
> know here as well
>
>
> override func draw(_ rect: CGRect)
> {
> let w = bounds.size.width // however bounds is known here
> let h = bounds.size.height
>
> let w2 = frame.size.width // frame as well known here
> let h2 = frame.size.height
>
> }
>
>
> }
>
>
>> On Apr 27, 2017, at 9:23 PM, Saagar Jha <saa...@saagarjha.com
>> <mailto:saa...@saagarjha.com>> wrote:
>>
>> Would you mind sharing the code you’re having trouble with?
>>
>> Saagar Jha
>>
>>> On Apr 27, 2017, at 10:22, Mohamed Salah via swift-users
>>> <swift-users@swift.org <mailto:swift-users@swift.org>> wrote:
>>>
>>> Hi ,
>>>
>>> why UIview frame and bounds properties are not seen outside any functions ?
>>>
>>> please advise
>>>
>>> thank you
>>> Mohamed Salah
>>> _______________________________________________
>>> swift-users mailing list
>>> swift-users@swift.org <mailto:swift-users@swift.org>
>>> https://lists.swift.org/mailman/listinfo/swift-users
>>> <https://lists.swift.org/mailman/listinfo/swift-users>
>>
>
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