Label Not Resizing Within Container Despite Several Methods
I have a reusable view class that I call when I want to add a disappearing subView
to another view. I have a UILabel
extension to determine when there is to much text for the label's current size(this extension works), and within this closure I'm trying to expand the: contianerView(regView)'s
height, the label's height, and the label's height anchor, since the label was created programatically. As you guessed, the label isn't expandng correctly.
I've tried setting the numberOfLines
to 0
; changing the label's frame; using .layoutSubviews
; removing when the height anchor was originally set, so now it's only called when the resize view method is used.
Label extension:
extension UILabel {
var isTruncated: Bool {
guard let labelText = text else {
return false
}
let labelTextSize = (labelText as NSString).boundingRect(
with: CGSize(width: frame.size.width, height: .greatestFiniteMagnitude),
options: .usesLineFragmentOrigin,
attributes: [.font: font],
context: nil).size
return labelTextSize.height > bounds.size.height
}
}
function to add reusable view(most of it is within the while loop towards the bottom):
func addDisapearingView(toview: UIView, text: String, textColor: UIColor, colorView: UIColor, alpha: CGFloat, height: CGFloat){
regView.backgroundColor = colorView
regView.alpha = alpha
toview.addSubview(regView)
regView.translatesAutoresizingMaskIntoConstraints = false
if #available(iOS 11.0, *) {
let guide = toview.safeAreaLayoutGuide
regView.trailingAnchor.constraint(equalTo: guide.trailingAnchor).isActive = true
regView.leadingAnchor.constraint(equalTo: guide.leadingAnchor).isActive = true
regView.topAnchor.constraint(equalTo: guide.topAnchor).isActive = true
UIView.animate(withDuration: 5.0) {
self.regView.heightAnchor.constraint(equalToConstant: height).isActive = true
}
} else {
NSLayoutConstraint(item: regView,
attribute: .top,
relatedBy: .equal,
toItem: toview, attribute: .top,
multiplier: 1.0, constant: 0).isActive = true
NSLayoutConstraint(item: regView,
attribute: .leading,
relatedBy: .equal, toItem: toview,
attribute: .leading,
multiplier: 1.0,
constant: 0).isActive = true
NSLayoutConstraint(item: regView, attribute: .trailing,
relatedBy: .equal,
toItem: toview,
attribute: .trailing,
multiplier: 1.0,
constant: 0).isActive = true
regView.heightAnchor.constraint(equalToConstant: height).isActive = true
}
let label = UILabel(frame: CGRect(x: regView.frame.origin.x, y: regView.frame.origin.y, width: regView.bounds.width, height: regView.bounds.height))
label.numberOfLines = 0
label.adjustsFontSizeToFitWidth = true
label.lineBreakMode = NSLineBreakMode.byWordWrapping
label.translatesAutoresizingMaskIntoConstraints = false
label.center.x = newView.center.x
label.center.y = newView.center.y
label.textAlignment = .center
label.text = text
label.textColor = textColor
regView.addSubview(label)
if label.isTruncated {
print("LABEL IS TRUNCATED")
}
//test if there is more text than the label has room for
while label.isTruncated {
print("printing while truncating in the wHiLE loop")
regView.bounds.size.height += 5
label.bounds.size.height += 5
var currentLabelHeight = label.bounds.height
let amt = currentLabelHeight + 5
label.frame = CGRect(x: regView.frame.origin.x, y: regView.frame.origin.y, width: regView.bounds.width, height: CGFloat(amt))
var heighT : CGFloat = height
heighT += 5
regView.heightAnchor.constraint(equalToConstant: heighT).isActive = true
}
regView.layoutSubviews()
label.sizeToFit()
//remove
Timer.scheduledTimer(withTimeInterval: 2.8, repeats: false) { (action) in
UIView.animate(withDuration: 2.8, animations: {
self.regView.heightAnchor.constraint(equalToConstant: 0).isActive = true
label.heightAnchor.constraint(equalToConstant: 0).isActive = true
})
}
}
I've briefly done this before in storyboard
where I had to expand a label within another view when the text was too long(this time it did work!), and the important part there was editing the height constraint, so I think this might have something to do with modifying the height constraint.
Any help would be greatly appreciated!
ANSWER:
I asked another question here: Programatically Created Label Within Container View Won't Expand For Text
it has the same code here and everything in the question but the answer works.
swift resize uilabel
add a comment |
I have a reusable view class that I call when I want to add a disappearing subView
to another view. I have a UILabel
extension to determine when there is to much text for the label's current size(this extension works), and within this closure I'm trying to expand the: contianerView(regView)'s
height, the label's height, and the label's height anchor, since the label was created programatically. As you guessed, the label isn't expandng correctly.
I've tried setting the numberOfLines
to 0
; changing the label's frame; using .layoutSubviews
; removing when the height anchor was originally set, so now it's only called when the resize view method is used.
Label extension:
extension UILabel {
var isTruncated: Bool {
guard let labelText = text else {
return false
}
let labelTextSize = (labelText as NSString).boundingRect(
with: CGSize(width: frame.size.width, height: .greatestFiniteMagnitude),
options: .usesLineFragmentOrigin,
attributes: [.font: font],
context: nil).size
return labelTextSize.height > bounds.size.height
}
}
function to add reusable view(most of it is within the while loop towards the bottom):
func addDisapearingView(toview: UIView, text: String, textColor: UIColor, colorView: UIColor, alpha: CGFloat, height: CGFloat){
regView.backgroundColor = colorView
regView.alpha = alpha
toview.addSubview(regView)
regView.translatesAutoresizingMaskIntoConstraints = false
if #available(iOS 11.0, *) {
let guide = toview.safeAreaLayoutGuide
regView.trailingAnchor.constraint(equalTo: guide.trailingAnchor).isActive = true
regView.leadingAnchor.constraint(equalTo: guide.leadingAnchor).isActive = true
regView.topAnchor.constraint(equalTo: guide.topAnchor).isActive = true
UIView.animate(withDuration: 5.0) {
self.regView.heightAnchor.constraint(equalToConstant: height).isActive = true
}
} else {
NSLayoutConstraint(item: regView,
attribute: .top,
relatedBy: .equal,
toItem: toview, attribute: .top,
multiplier: 1.0, constant: 0).isActive = true
NSLayoutConstraint(item: regView,
attribute: .leading,
relatedBy: .equal, toItem: toview,
attribute: .leading,
multiplier: 1.0,
constant: 0).isActive = true
NSLayoutConstraint(item: regView, attribute: .trailing,
relatedBy: .equal,
toItem: toview,
attribute: .trailing,
multiplier: 1.0,
constant: 0).isActive = true
regView.heightAnchor.constraint(equalToConstant: height).isActive = true
}
let label = UILabel(frame: CGRect(x: regView.frame.origin.x, y: regView.frame.origin.y, width: regView.bounds.width, height: regView.bounds.height))
label.numberOfLines = 0
label.adjustsFontSizeToFitWidth = true
label.lineBreakMode = NSLineBreakMode.byWordWrapping
label.translatesAutoresizingMaskIntoConstraints = false
label.center.x = newView.center.x
label.center.y = newView.center.y
label.textAlignment = .center
label.text = text
label.textColor = textColor
regView.addSubview(label)
if label.isTruncated {
print("LABEL IS TRUNCATED")
}
//test if there is more text than the label has room for
while label.isTruncated {
print("printing while truncating in the wHiLE loop")
regView.bounds.size.height += 5
label.bounds.size.height += 5
var currentLabelHeight = label.bounds.height
let amt = currentLabelHeight + 5
label.frame = CGRect(x: regView.frame.origin.x, y: regView.frame.origin.y, width: regView.bounds.width, height: CGFloat(amt))
var heighT : CGFloat = height
heighT += 5
regView.heightAnchor.constraint(equalToConstant: heighT).isActive = true
}
regView.layoutSubviews()
label.sizeToFit()
//remove
Timer.scheduledTimer(withTimeInterval: 2.8, repeats: false) { (action) in
UIView.animate(withDuration: 2.8, animations: {
self.regView.heightAnchor.constraint(equalToConstant: 0).isActive = true
label.heightAnchor.constraint(equalToConstant: 0).isActive = true
})
}
}
I've briefly done this before in storyboard
where I had to expand a label within another view when the text was too long(this time it did work!), and the important part there was editing the height constraint, so I think this might have something to do with modifying the height constraint.
Any help would be greatly appreciated!
ANSWER:
I asked another question here: Programatically Created Label Within Container View Won't Expand For Text
it has the same code here and everything in the question but the answer works.
swift resize uilabel
add a comment |
I have a reusable view class that I call when I want to add a disappearing subView
to another view. I have a UILabel
extension to determine when there is to much text for the label's current size(this extension works), and within this closure I'm trying to expand the: contianerView(regView)'s
height, the label's height, and the label's height anchor, since the label was created programatically. As you guessed, the label isn't expandng correctly.
I've tried setting the numberOfLines
to 0
; changing the label's frame; using .layoutSubviews
; removing when the height anchor was originally set, so now it's only called when the resize view method is used.
Label extension:
extension UILabel {
var isTruncated: Bool {
guard let labelText = text else {
return false
}
let labelTextSize = (labelText as NSString).boundingRect(
with: CGSize(width: frame.size.width, height: .greatestFiniteMagnitude),
options: .usesLineFragmentOrigin,
attributes: [.font: font],
context: nil).size
return labelTextSize.height > bounds.size.height
}
}
function to add reusable view(most of it is within the while loop towards the bottom):
func addDisapearingView(toview: UIView, text: String, textColor: UIColor, colorView: UIColor, alpha: CGFloat, height: CGFloat){
regView.backgroundColor = colorView
regView.alpha = alpha
toview.addSubview(regView)
regView.translatesAutoresizingMaskIntoConstraints = false
if #available(iOS 11.0, *) {
let guide = toview.safeAreaLayoutGuide
regView.trailingAnchor.constraint(equalTo: guide.trailingAnchor).isActive = true
regView.leadingAnchor.constraint(equalTo: guide.leadingAnchor).isActive = true
regView.topAnchor.constraint(equalTo: guide.topAnchor).isActive = true
UIView.animate(withDuration: 5.0) {
self.regView.heightAnchor.constraint(equalToConstant: height).isActive = true
}
} else {
NSLayoutConstraint(item: regView,
attribute: .top,
relatedBy: .equal,
toItem: toview, attribute: .top,
multiplier: 1.0, constant: 0).isActive = true
NSLayoutConstraint(item: regView,
attribute: .leading,
relatedBy: .equal, toItem: toview,
attribute: .leading,
multiplier: 1.0,
constant: 0).isActive = true
NSLayoutConstraint(item: regView, attribute: .trailing,
relatedBy: .equal,
toItem: toview,
attribute: .trailing,
multiplier: 1.0,
constant: 0).isActive = true
regView.heightAnchor.constraint(equalToConstant: height).isActive = true
}
let label = UILabel(frame: CGRect(x: regView.frame.origin.x, y: regView.frame.origin.y, width: regView.bounds.width, height: regView.bounds.height))
label.numberOfLines = 0
label.adjustsFontSizeToFitWidth = true
label.lineBreakMode = NSLineBreakMode.byWordWrapping
label.translatesAutoresizingMaskIntoConstraints = false
label.center.x = newView.center.x
label.center.y = newView.center.y
label.textAlignment = .center
label.text = text
label.textColor = textColor
regView.addSubview(label)
if label.isTruncated {
print("LABEL IS TRUNCATED")
}
//test if there is more text than the label has room for
while label.isTruncated {
print("printing while truncating in the wHiLE loop")
regView.bounds.size.height += 5
label.bounds.size.height += 5
var currentLabelHeight = label.bounds.height
let amt = currentLabelHeight + 5
label.frame = CGRect(x: regView.frame.origin.x, y: regView.frame.origin.y, width: regView.bounds.width, height: CGFloat(amt))
var heighT : CGFloat = height
heighT += 5
regView.heightAnchor.constraint(equalToConstant: heighT).isActive = true
}
regView.layoutSubviews()
label.sizeToFit()
//remove
Timer.scheduledTimer(withTimeInterval: 2.8, repeats: false) { (action) in
UIView.animate(withDuration: 2.8, animations: {
self.regView.heightAnchor.constraint(equalToConstant: 0).isActive = true
label.heightAnchor.constraint(equalToConstant: 0).isActive = true
})
}
}
I've briefly done this before in storyboard
where I had to expand a label within another view when the text was too long(this time it did work!), and the important part there was editing the height constraint, so I think this might have something to do with modifying the height constraint.
Any help would be greatly appreciated!
ANSWER:
I asked another question here: Programatically Created Label Within Container View Won't Expand For Text
it has the same code here and everything in the question but the answer works.
swift resize uilabel
I have a reusable view class that I call when I want to add a disappearing subView
to another view. I have a UILabel
extension to determine when there is to much text for the label's current size(this extension works), and within this closure I'm trying to expand the: contianerView(regView)'s
height, the label's height, and the label's height anchor, since the label was created programatically. As you guessed, the label isn't expandng correctly.
I've tried setting the numberOfLines
to 0
; changing the label's frame; using .layoutSubviews
; removing when the height anchor was originally set, so now it's only called when the resize view method is used.
Label extension:
extension UILabel {
var isTruncated: Bool {
guard let labelText = text else {
return false
}
let labelTextSize = (labelText as NSString).boundingRect(
with: CGSize(width: frame.size.width, height: .greatestFiniteMagnitude),
options: .usesLineFragmentOrigin,
attributes: [.font: font],
context: nil).size
return labelTextSize.height > bounds.size.height
}
}
function to add reusable view(most of it is within the while loop towards the bottom):
func addDisapearingView(toview: UIView, text: String, textColor: UIColor, colorView: UIColor, alpha: CGFloat, height: CGFloat){
regView.backgroundColor = colorView
regView.alpha = alpha
toview.addSubview(regView)
regView.translatesAutoresizingMaskIntoConstraints = false
if #available(iOS 11.0, *) {
let guide = toview.safeAreaLayoutGuide
regView.trailingAnchor.constraint(equalTo: guide.trailingAnchor).isActive = true
regView.leadingAnchor.constraint(equalTo: guide.leadingAnchor).isActive = true
regView.topAnchor.constraint(equalTo: guide.topAnchor).isActive = true
UIView.animate(withDuration: 5.0) {
self.regView.heightAnchor.constraint(equalToConstant: height).isActive = true
}
} else {
NSLayoutConstraint(item: regView,
attribute: .top,
relatedBy: .equal,
toItem: toview, attribute: .top,
multiplier: 1.0, constant: 0).isActive = true
NSLayoutConstraint(item: regView,
attribute: .leading,
relatedBy: .equal, toItem: toview,
attribute: .leading,
multiplier: 1.0,
constant: 0).isActive = true
NSLayoutConstraint(item: regView, attribute: .trailing,
relatedBy: .equal,
toItem: toview,
attribute: .trailing,
multiplier: 1.0,
constant: 0).isActive = true
regView.heightAnchor.constraint(equalToConstant: height).isActive = true
}
let label = UILabel(frame: CGRect(x: regView.frame.origin.x, y: regView.frame.origin.y, width: regView.bounds.width, height: regView.bounds.height))
label.numberOfLines = 0
label.adjustsFontSizeToFitWidth = true
label.lineBreakMode = NSLineBreakMode.byWordWrapping
label.translatesAutoresizingMaskIntoConstraints = false
label.center.x = newView.center.x
label.center.y = newView.center.y
label.textAlignment = .center
label.text = text
label.textColor = textColor
regView.addSubview(label)
if label.isTruncated {
print("LABEL IS TRUNCATED")
}
//test if there is more text than the label has room for
while label.isTruncated {
print("printing while truncating in the wHiLE loop")
regView.bounds.size.height += 5
label.bounds.size.height += 5
var currentLabelHeight = label.bounds.height
let amt = currentLabelHeight + 5
label.frame = CGRect(x: regView.frame.origin.x, y: regView.frame.origin.y, width: regView.bounds.width, height: CGFloat(amt))
var heighT : CGFloat = height
heighT += 5
regView.heightAnchor.constraint(equalToConstant: heighT).isActive = true
}
regView.layoutSubviews()
label.sizeToFit()
//remove
Timer.scheduledTimer(withTimeInterval: 2.8, repeats: false) { (action) in
UIView.animate(withDuration: 2.8, animations: {
self.regView.heightAnchor.constraint(equalToConstant: 0).isActive = true
label.heightAnchor.constraint(equalToConstant: 0).isActive = true
})
}
}
I've briefly done this before in storyboard
where I had to expand a label within another view when the text was too long(this time it did work!), and the important part there was editing the height constraint, so I think this might have something to do with modifying the height constraint.
Any help would be greatly appreciated!
ANSWER:
I asked another question here: Programatically Created Label Within Container View Won't Expand For Text
it has the same code here and everything in the question but the answer works.
swift resize uilabel
swift resize uilabel
edited Jan 3 at 15:52
Jack Derbis
asked Jan 1 at 0:19
Jack DerbisJack Derbis
998
998
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
If i understand correct, you have your view and a label, and you want your view to dynamically change height depend on label content. I suggest you to break that task to chunks and resolve it step by step.
1 - You might want to add a test UIView
object instead of label with fixed size. When u do this, you will see whether you parent view expand depending of test view size.
2 - If it is, you are up to create a label with height you need. All that you need to know its font, text and width. I think this link may help you. After you sure, that your label size is correct (you may want to print it out) you may add it as any other UIView
object to your parent view.
what do you mean with #1? I understand the concept, just not how to implement it.
– Jack Derbis
Jan 2 at 3:56
@JackDerbis create an UIView programmatically. Set fixed width and height constraints, add colour, and add it to superview to see, if your logic is correct and view placed correctly and its visible. Then proceed with label.
– Evgeniy Kleban
Jan 2 at 3:58
I still can't get it...I've tried the answers from so many questions but none of them work.
– Jack Derbis
Jan 2 at 15:27
@JackDerbis what exactly you have not understand?
– Evgeniy Kleban
Jan 2 at 16:49
I still can't get it to work...
– Jack Derbis
Jan 2 at 20:14
|
show 2 more comments
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1 Answer
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If i understand correct, you have your view and a label, and you want your view to dynamically change height depend on label content. I suggest you to break that task to chunks and resolve it step by step.
1 - You might want to add a test UIView
object instead of label with fixed size. When u do this, you will see whether you parent view expand depending of test view size.
2 - If it is, you are up to create a label with height you need. All that you need to know its font, text and width. I think this link may help you. After you sure, that your label size is correct (you may want to print it out) you may add it as any other UIView
object to your parent view.
what do you mean with #1? I understand the concept, just not how to implement it.
– Jack Derbis
Jan 2 at 3:56
@JackDerbis create an UIView programmatically. Set fixed width and height constraints, add colour, and add it to superview to see, if your logic is correct and view placed correctly and its visible. Then proceed with label.
– Evgeniy Kleban
Jan 2 at 3:58
I still can't get it...I've tried the answers from so many questions but none of them work.
– Jack Derbis
Jan 2 at 15:27
@JackDerbis what exactly you have not understand?
– Evgeniy Kleban
Jan 2 at 16:49
I still can't get it to work...
– Jack Derbis
Jan 2 at 20:14
|
show 2 more comments
If i understand correct, you have your view and a label, and you want your view to dynamically change height depend on label content. I suggest you to break that task to chunks and resolve it step by step.
1 - You might want to add a test UIView
object instead of label with fixed size. When u do this, you will see whether you parent view expand depending of test view size.
2 - If it is, you are up to create a label with height you need. All that you need to know its font, text and width. I think this link may help you. After you sure, that your label size is correct (you may want to print it out) you may add it as any other UIView
object to your parent view.
what do you mean with #1? I understand the concept, just not how to implement it.
– Jack Derbis
Jan 2 at 3:56
@JackDerbis create an UIView programmatically. Set fixed width and height constraints, add colour, and add it to superview to see, if your logic is correct and view placed correctly and its visible. Then proceed with label.
– Evgeniy Kleban
Jan 2 at 3:58
I still can't get it...I've tried the answers from so many questions but none of them work.
– Jack Derbis
Jan 2 at 15:27
@JackDerbis what exactly you have not understand?
– Evgeniy Kleban
Jan 2 at 16:49
I still can't get it to work...
– Jack Derbis
Jan 2 at 20:14
|
show 2 more comments
If i understand correct, you have your view and a label, and you want your view to dynamically change height depend on label content. I suggest you to break that task to chunks and resolve it step by step.
1 - You might want to add a test UIView
object instead of label with fixed size. When u do this, you will see whether you parent view expand depending of test view size.
2 - If it is, you are up to create a label with height you need. All that you need to know its font, text and width. I think this link may help you. After you sure, that your label size is correct (you may want to print it out) you may add it as any other UIView
object to your parent view.
If i understand correct, you have your view and a label, and you want your view to dynamically change height depend on label content. I suggest you to break that task to chunks and resolve it step by step.
1 - You might want to add a test UIView
object instead of label with fixed size. When u do this, you will see whether you parent view expand depending of test view size.
2 - If it is, you are up to create a label with height you need. All that you need to know its font, text and width. I think this link may help you. After you sure, that your label size is correct (you may want to print it out) you may add it as any other UIView
object to your parent view.
answered Jan 1 at 1:13


Evgeniy KlebanEvgeniy Kleban
2,61672856
2,61672856
what do you mean with #1? I understand the concept, just not how to implement it.
– Jack Derbis
Jan 2 at 3:56
@JackDerbis create an UIView programmatically. Set fixed width and height constraints, add colour, and add it to superview to see, if your logic is correct and view placed correctly and its visible. Then proceed with label.
– Evgeniy Kleban
Jan 2 at 3:58
I still can't get it...I've tried the answers from so many questions but none of them work.
– Jack Derbis
Jan 2 at 15:27
@JackDerbis what exactly you have not understand?
– Evgeniy Kleban
Jan 2 at 16:49
I still can't get it to work...
– Jack Derbis
Jan 2 at 20:14
|
show 2 more comments
what do you mean with #1? I understand the concept, just not how to implement it.
– Jack Derbis
Jan 2 at 3:56
@JackDerbis create an UIView programmatically. Set fixed width and height constraints, add colour, and add it to superview to see, if your logic is correct and view placed correctly and its visible. Then proceed with label.
– Evgeniy Kleban
Jan 2 at 3:58
I still can't get it...I've tried the answers from so many questions but none of them work.
– Jack Derbis
Jan 2 at 15:27
@JackDerbis what exactly you have not understand?
– Evgeniy Kleban
Jan 2 at 16:49
I still can't get it to work...
– Jack Derbis
Jan 2 at 20:14
what do you mean with #1? I understand the concept, just not how to implement it.
– Jack Derbis
Jan 2 at 3:56
what do you mean with #1? I understand the concept, just not how to implement it.
– Jack Derbis
Jan 2 at 3:56
@JackDerbis create an UIView programmatically. Set fixed width and height constraints, add colour, and add it to superview to see, if your logic is correct and view placed correctly and its visible. Then proceed with label.
– Evgeniy Kleban
Jan 2 at 3:58
@JackDerbis create an UIView programmatically. Set fixed width and height constraints, add colour, and add it to superview to see, if your logic is correct and view placed correctly and its visible. Then proceed with label.
– Evgeniy Kleban
Jan 2 at 3:58
I still can't get it...I've tried the answers from so many questions but none of them work.
– Jack Derbis
Jan 2 at 15:27
I still can't get it...I've tried the answers from so many questions but none of them work.
– Jack Derbis
Jan 2 at 15:27
@JackDerbis what exactly you have not understand?
– Evgeniy Kleban
Jan 2 at 16:49
@JackDerbis what exactly you have not understand?
– Evgeniy Kleban
Jan 2 at 16:49
I still can't get it to work...
– Jack Derbis
Jan 2 at 20:14
I still can't get it to work...
– Jack Derbis
Jan 2 at 20:14
|
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