I use dynamic height cells for my UITableView with this code:
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "QuestionsCell", for: indexPath) as! QuestionsCell
cell.label1.text = ""
cell.label2.text = ""
cell.label1.text = some text from array
cell.label2.text = some text from array
cell.label1.lineBreakMode = .byWordWrapping
cell.label1.numberOfLines = 0
cell.label1.sizeToFit()
return cell
}
Then I've pinned all constraints in Storyboard for each element (top, bottom, leading and trailing). On iPhone everything works fine, but on iPad when I scroll the UITableView this is happening (dynamic label height):
sizeToFit() only makes cell1 as big as it needs to be for the text.
You also need to use automatic height sizing for the table view cells.
In viewDidLoad,
self.tableView.rowHeight = UITableViewAutomaticDimension
You will also want to make sure you have a vertical constraint from your bold label to the "12 days ago" label, to ensure there is always vertical space between them, so they don't overlap.
you need to implement this delegate method:
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
if this does not work then check if there is vertical spacing constraints between top textView and bottom textView.
I'm having a lot of issues getting my custom cells to use the dynamic row height.
Here is the xib of my custom cell.
In viewDidLoad for my table view, I set these values:
self.tableView.estimatedRowHeight = 80.0
self.tableView.rowHeight = UITableViewAutomaticDimension
but it doesn't seem to use the dynamic size when it loads the table.
Below is my cellForRowAtIndexPath function.
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
// Configure the cell...
let cell = Bundle.main.loadNibNamed("RedditCell", owner: self, options: nil)?.first as? RedditPostCellTableViewCell
let post = self.model?.getPostAt(index: indexPath.row)
cell?.title.text = post?.title
cell?.author.text = post?.author
cell?.upvotes.text = "\(post?.upvotes ?? -1)"
return cell!
}
I can't figure out why this isn't working. Any help would be appreciated!
Please try to set the height in the heightForRowAt
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
self.tableView.estimatedRowHeight = 80
return UITableViewAutomaticDimension
}
You don't need to pre-calculate the height. The problem is with your constraints in your custom UITableViewCell. Your constraints should be set up the way to force UITableViewCell to expand to show the whole label or any other content. Just setup constraints similar to my short example project: https://www.transfernow.net/216sw6l1bler?lng=en, and cell height will be automatically set, as you expected.
Screenshot:
In addition to setting the constraints so that the height of all of the elements in the cell + padding can be used to calculated the overall cell height, you must set the number of lines of your labels to zeros and set them to word wrap if these must grow based on content as well.
I am trying to figure out how get the correct height for my tableview cell that contains a uitextview so that all the content in the uitextview will be display. The textview is not editable and not scrollable, which means that the string for the uitextview is known. I tried simply returning the height of the tableview cell that is in the storyboard in heightForRowAtIndexPath but that cuts off the content if it is too large. I also tried calculating the height for the textView in heightForRowAtIndexPath but it throws an error at runtime:
override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
let cellInfo = UserCellsArray[indexPath.section]
switch cellInfo {
case .userInfo: return 104
case .ubio:
let cell = tableView.dequeueReusableCellWithIdentifier(cellInfo.description, forIndexPath: indexPath) as! UserProfileTableViewCell //error
let oldHeight = cell.userBio.frame.size.height
cell.userBio.text = self.bio
var bodyframe = cell.userBio.frame
bodyframe.size = cell.userBio.contentSize
let newHeight = cell.userBio.contentSize.height
return tableView.rowHeight - oldHeight + newHeight
}
}
Here is what you need to do:
Need to use auto layout in your cell and set up appropriate constraints for UILabel. Since we want to resize the UILabel to fit the text set to it, we will set the number of lines value to 0. And then set the leading, trailing, bottom and top constraints to the UILabel. Please see screenshots here:
In your Table View controller > viewDidLoad call these two lines:
tableView.estimatedRowHeight = 50.0 //Give an approximation here
tableView.rowHeight = UITableViewAutomaticDimension
and also implement delegate method:
override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat{
return UITableViewAutomaticDimension
}
Text data of variable length are being injected into tableview cell labels. In order for each cell height to be properly sized, I have implemented in viewDidLoad():
self.tableView.estimatedRowHeight = 88.0
self.tableView.rowHeight = UITableViewAutomaticDimension
This estimates the height to be 88.0 pixels and should resize the height automatically if larger. It works perfectly for cells that have yet to be scrolled to (as UITableViewAutomaticDimention is called upon scrolling to the cell), but not for the cells that are initially rendered onscreen upon loading the table with data.
I have tried reloading the data (as suggested in many other resources):
self.tableView.reloadData()
in both viewDidAppear() and viewWillAppear() and it did not help. I am lost.. does anyone know how to render the dynamic height for the cells loaded initially on screen?
Try This:
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
EDIT
func tableView(tableView: UITableView, estimatedHeightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
Swift 4
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
Swift 4.2
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableView.automaticDimension
}
Define above Both Methods.
It solves the problem.
PS: Top and bottom constraints is required for this to work.
Here is example
Use this:
tableView.rowHeight = UITableViewAutomaticDimension
tableView.estimatedRowHeight = 300
and don't use: heightForRowAtIndexPath delegate function
Also, in the storyboard don't set the height of the label that contains a large amount of data. Give it top, bottom, leading, trailing constraints.
SWIFT 3
tableView.rowHeight = UITableViewAutomaticDimension
tableView.estimatedRowHeight = 160
AND!!!
In storyBoard: You HAVE TO set TOP & BOTTOM constraints for your Label.
Nothing else.
This strange bug was solved through Interface Builder parameters as the other answers did not resolve the issue.
All I did was make the default label size larger than the content potentially could be and have it reflected in the estimatedRowHeight height too. Previously, I set the default row height in Interface Builder to 88px and reflected it like so in my controller viewDidLoad():
self.tableView.rowHeight = UITableViewAutomaticDimension
self.tableView.estimatedRowHeight = 88.0
But that didn't work. So I realized that content wouldn't ever become larger than maybe 100px, so I set the default cell height to 108px (larger than the potential content) and reflected it like so in the controller viewDidLoad():
self.tableView.rowHeight = UITableViewAutomaticDimension
self.tableView.estimatedRowHeight = 108.0
This actually allowed the code to shrink down the initial labels to the correct size. In other words, it never expanded out to a larger size, but could always shrink down... Also, no additional self.tableView.reloadData() was needed in viewWillAppear().
I know this does not cover highly variable content sizes, but this worked in my situation where the content had a maximum possible character count.
Not sure if this is a bug in Swift or Interface Builder but it works like a charm. Give it a try!
Set automatic dimension for row height & estimated row height and ensure following steps:
#IBOutlet weak var table: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
// Set automatic dimensions for row height
// Swift 4.2 onwards
table.rowHeight = UITableView.automaticDimension
table.estimatedRowHeight = UITableView.automaticDimension
// Swift 4.1 and below
table.rowHeight = UITableViewAutomaticDimension
table.estimatedRowHeight = UITableViewAutomaticDimension
}
// UITableViewAutomaticDimension calculates height of label contents/text
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
// Swift 4.2 onwards
return UITableView.automaticDimension
// Swift 4.1 and below
return UITableViewAutomaticDimension
}
For Example: if you have a label in your UITableviewCell then,
Set number of lines = 0 (& line break mode = truncate tail)
Set all constraints (top, bottom, right left) with respect to its superview/ cell container.
Optional: Set minimum height for label, if you want minimum vertical area covered by label, even if there is no data.
Here is sample label with dynamic height constraints.
For Swift 3 you can use the following:
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
Dynamic sizing cell of UITableView required 2 things
Setting the the right constraint of your view inside the table view cell (mostly it includes giving your view proper top , bottom and traling constraints)
Calling these properties of TableView in viewDidLoad()
tableView.rowHeight = UITableViewAutomaticDimension
tableView.estimatedRowHeight = 140
This is a wonderfull tutorial on self-sizing (dynamic table view cells) written in swift 3 .
In my case - In storyboard i had a two labels as in image below,
both labels was having desired width values been set before i made it equal. once you unselect, it will change to automatic, and as usual having below things should work like charm.
1.rowHeight = UITableView.automaticDimension, and
2.estimatedRowHeight = 100(In my case).
3.make sure label number of lines is zero.
In addition to what others have said,
SET YOUR LABEL'S CONSTRAINTS RELATIVE TO THE SUPERVIEW!
So instead of placing your label's constraints relative to other things around it, constrain it to the table view cell's content view.
Then, make sure your label's height is set to more than or equal 0, and the number of lines is set to 0.
Then in ViewDidLoad add:
tableView.estimatedRowHeight = 695
tableView.rowHeight = UITableViewAutomaticDimension
To make autoresizing of UITableViewCell to work make sure you are doing these changes :
In Storyboard your UITableView should only contain Dynamic Prototype Cells (It shouldn't use static
cells) otherwise autoresizing won't work.
In Storyboard your UITableViewCell's
UILabel has configured for all 4 constraints that is top, bottom,
leading and trailing constraints.
In Storyboard your UITableViewCell's
UILabel's number of lines should be 0
In your UIViewController's
viewDidLoad function set below UITableView Properties :
self.tableView.estimatedRowHeight = <minimum cell height>
self.tableView.rowHeight = UITableViewAutomaticDimension
For Swift i checked this answer in iOS 9.0 and iOS 11 also (Xcode 9.3)
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
Here you need to add top, bottom, right and left constraints
For Swift 4.2
#IBOutlet weak var tableVw: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
// Set self as tableView delegate
tableVw.delegate = self
tableVw.rowHeight = UITableView.automaticDimension
tableVw.estimatedRowHeight = UITableView.automaticDimension
}
// UITableViewDelegate Method
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableView.automaticDimension
}
Happy Coding :)
This is simple when doing 2 things:
setting the automatic height
tableView.rowHeight = UITableView.automaticDimension
creating all TableViewCells with FULL constraints from top to bottom. The last element MUST define some bottom spacing to end the cell.
So the layout engine can compute the cell heigth and apply the value correctly.
Unfortunately, I am not sure what I was missing. The above methods don't work for me to get the xib cell's height or let the layoutifneeded()or UITableView.automaticDimension to do the height calculation. I've been searching and trying for 3 to 4 nights but could not find an answer.
Some answers here or on another post did give me hints for the workaround though. It's a stupid method but it works. Just add all your cells into an Array. And then set the outlet of each of your height constraint in the xib storyboard. Finally, add them up in the heightForRowAt method. It's just straight forward if you are not familiar with the those APIs.
Swift 4.2
CustomCell.Swift
#IBOutlet weak var textViewOneHeight: NSLayoutConstraint!
#IBOutlet weak var textViewTwoHeight: NSLayoutConstraint!
#IBOutlet weak var textViewThreeHeight: NSLayoutConstraint!
#IBOutlet weak var textViewFourHeight: NSLayoutConstraint!
#IBOutlet weak var textViewFiveHeight: NSLayoutConstraint!
MyTableViewVC.Swift
.
.
var myCustomCells:[CustomCell] = []
.
.
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = Bundle.main.loadNibNamed("CustomCell", owner: self, options: nil)?.first as! CustomCell
.
.
myCustomCells.append(cell)
return cell
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
let totalHeight = myCustomCells[indexPath.row].textViewOneHeight.constant + myCustomCells[indexPath.row].textViewTwoHeight.constant + myCustomCells[indexPath.row].textViewThreeHeight.constant + myCustomCells[indexPath.row].textViewFourHeight.constant + myCustomCells[indexPath.row].textViewFiveHeight.constant
return totalHeight + 40 //some magic number
}
I use these
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 100
}
Try
override func viewWillAppear(animated: Bool) {
self.tableView.layoutSubviews()
}
I had the same problem and it works for me.
You should just set all constraints for TOP, BOTTOM and HEIGHT for each object on cell view/views and remove exists middle Y position if have. Because where you didn't this, puts artifacts on another views.
For objective c this is one of my nice solution. it's worked for me.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
cell.textLabel.text = [_nameArray objectAtIndex:indexPath.row];
cell.textLabel.numberOfLines = 0;
cell.textLabel.lineBreakMode = NSLineBreakByWordWrapping;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return UITableViewAutomaticDimension;
}
We need to apply these 2 changes.
1)cell.textLabel.numberOfLines = 0;
cell.textLabel.lineBreakMode = NSLineBreakByWordWrapping;
2)return UITableViewAutomaticDimension;
self.tableView.rowHeight = UITableViewAutomaticDimension
self.tableView.estimatedRowHeight = 88.0
And don't forget to add botton constraints for label
I was just inspired by your solution and tried another way.
Please try to add tableView.reloadData() to viewDidAppear().
This works for me.
I think the things behind scrolling is "the same" as reloadData. When you scroll the screen, it's like calling reloadData() when viewDidAppear .
If this works, plz reply this answer so I could be sure of this solution.
I had also got this issue initially, I had resolved my issue from this code
try avoiding the use of self.tableView.reloadData() instead of this code for dynamic height
[self.tableView reloadSections:[NSIndexSet indexSetWithIndex:0] withRowAnimation:UITableViewRowAnimationFade];
When using a static UITableView, I set all the values in the UILabels and then call tableView.reloadData().
What worked for me was creating a height constraint on my custom cell that I set at runtime (I've got an expand/collapse button in each cell).
Then in heightForRowAt in the parent, I had to do a combination of suggested answers:
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
if let cell = tableView.cellForRow(at: indexPath) as? GroupTableViewCell {
return cell.heightConstraint.constant
}
return UITableView.automaticDimension
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return 88.0
}
I use the already calculated height constraint constant where it's available and UITableView.automaticDimension otherwise. This was the only way to get the correct height and maintain the correct cell state when the cell gets recycled.
I hear it's considered bad practice to reference the cell itself inside heightForRowAt, but I don't see another way of doing it with custom cell objects with dynamic heights whilst keeping all constraints satisfied.
self.Itemtableview.estimatedRowHeight = 0;
self.Itemtableview.estimatedSectionHeaderHeight = 0;
self.Itemtableview.estimatedSectionFooterHeight = 0;
[ self.Itemtableview reloadData];
self.Itemtableview.frame = CGRectMake( self.Itemtableview.frame.origin.x, self.Itemtableview.frame.origin.y, self.Itemtableview.frame.size.width,self.Itemtableview.contentSize.height + self.Itemtableview.contentInset.bottom + self.Itemtableview.contentInset.top);
Set proper constraint and update delegate methods as:
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
This will resolve dynamic cell height issue. IF not you need to check constraints.
Swift 5 Enjoy
tablev.rowHeight = 100
tablev.estimatedRowHeight = UITableView.automaticDimension
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = self.tablev.dequeueReusableCell(withIdentifier: "ConferenceRoomsCell") as! ConferenceRoomsCell
cell.lblRoomName.numberOfLines = 0
cell.lblRoomName.lineBreakMode = .byWordWrapping
cell.lblRoomName.text = arrNameOfRooms[indexPath.row]
cell.lblRoomName.sizeToFit()
return cell
}