I have created 3 custom .xib files for my tableview.
But i am not able to figure out to specify the height of each cell.
I have implemented above line in viewdidLoad()
tableview.estimatedRowHeight = 120
tableview.rowHeight = UITableView.automaticDimension
I have just put a uiview in each of .xib file with 4 contraints (leading, trailing, top, bottom)
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableView.automaticDimension
}
But it's not setting proper height to my cells.
its only when I hard code the value, only then it works.
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 200
}
How to handle this problem, as data will soon become dynamic and I can't be changing these hardcoded value.
UIView has not height value by default. As you trying it this will not set the height of cell.
You can try by placing a UILabel or UIButton inside the UIView on which you have settled the 4 constraints (leading, trailing, top, bottom).
NOTE: UILabel or UIButton also need 4 constraints (leading, trailing, top, bottom) if you want automatic height of UITableViewCell.
Replace your UIView with UILabel and set number of lines to zero, Then it will automatically take the height based on the content of UILabel
Related
Hello I have a UITableView with x# of cells. the last cell I have two UILabels. When the second UILabel text is set I am trying to get the cell and the UILabel to resize to show the text.
Here is what I have:
The UILabel - LabelBio (orange) has:
Lines: 0
Baseline: Align Baselines
Line Break: Word Wrap
Autoshrink: Fixed Font Size
The constraints for ContentView, LabelSellerInfo and LabelBio are set as follows:
LabelSellerInfo
LabelBio
ContentView
With those settings here is what a get:
I have tried many variations but cannot seem to get the Bio label to grow and shrink, sometimes if I get the label to grow the cell is still too small.
Can anyone help me to understand what I am doing wrong and show me how to get the constraints correct to get this to work?
Thank you
Set tableView.rowHeight = UITableViewAutomaticDimension
Remove this function in your code func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat
Set height constraint of LabelBio greaterOrEqualThan 0
here are the steps ...
hope you know about autylayout. use constraints (left to content view, right to content view, bottom to content view and verticle to your first label)
then in your viewdidLoad method add YourTableView.estimatedRowHeight = 200 -> give any height you want.
finally define below method :
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
you good to go.
I need to set UITableViewCell dynamic height based on it's content.
Here is my demo image:
In this to label which have dynamic content so based on that label content my cell height should change..
I get the constraint error. In this cell two UILabel is available and both have dynamic content size. (I already make the demo with auto resizing cell with only one label.) But in this cell two label are there. So error is xcode suggest me to give Y POS or Height to label, but I already set top constraints. (4 side constraints with label line set to 0 Zero) But still it's fails.
I also try with this code
self.tableView.estimatedRowHeight = 250.0;
self.tableView.rowHeight = UITableViewAutomaticDimension;
Here is my demo code
Look at the screenshot of my output. For both the labels , you should give all the four constrains and you have to change the heights of both the labels priority to 750 & set the hugging and resistance priority to 1000. Then you have to change the number of lines to 0 in storyboard
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return 250
}
Add this code into viewDidLoad() method:
tableView.rowHeight = UITableViewAutomaticDimension
tableView.estimatedRowHeight = 44
In Swift 3, Use
func tableView(_ tableView: UITableView,estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return HEIGHT // Maximum cell height
}
In table view cell, Set dynamic height constraint to the text view (Greater than or equal) - Maximum text view height
I found the problem. After setting text to UILabel, it doesn't still set correct height frame to its content. In cellForRowAt, just add this:
//these make height frame both of labels became correct
cell.lbName.sizeToFit()
cell.lbAge.sizeToFit()
// update cell layout
cell.layoutIfNeeded()
Have a look at the UITableViewDelegate function tableView(_:heightForRowAt:). It’ll work in your case if you are able to calculate the height for a given index path.
So I created a custom cell with a XIB file and added the constraints: Image. However, the UITextView is not automatically adjusting its height depending on the amount of text inside it.
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return 300
}
this may help you
override func viewDidLoad()
{
super.viewDidLoad()
tableView.rowHeight = UITableViewAutomaticDimension
tableView.estimatedRowHeight = 85
}
and make sure to disable textview scroll and have relation in the top down width hight
this link may help you
https://www.raywenderlich.com/129059/self-sizing-table-view-cells
You have too many vertical constraints such that it fixes the size of your textView. You should remove one of the top constraints, or just use a stackview as the only child of the content view and give the stack leading trailing, top bottom from the content view (in this case you don't need any other constraints).
Follow these steps :
Give constraints to ImageView - Leading, Trailing,Top with contentview and Height Constraint(if you want fix height else) give bottom with textview.
Give constraints to TextView - Leading, Trailing, bottom with contentView .
Disable scroll of textView .
Add Following line in ViewDidLoad.
tableView.rowHeight = UITableViewAutomaticDimension
tableView.estimatedRowHeight = 44
I have a tableViewCell with a label inside that could be multiple lines tall. I've set the label's Lines property to 0. However, when I make the label's text have multiple lines the text gets cut off. Here's how I've set up my storyboard:
Does anybody know how I made the table's cells just tall enough to contain the labels within?
Setting Dynamic Cell height procedure
Pin the label from top and bottom. Please refer following Screen shot
Set numbers of line to 0 of the label as from property inspector of xcode, it can be done from code too please refer following screen shot
Implement delegates of table view mentioned below
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return 50 // also UITableViewAutomaticDimension can be used
}
You are missing the bottom constraint from the label to the table view cell (as far as I can tell). In order to make autolayout know how large the height of the cell has to be, you need to supply those constraints.
In addition do not forget to provide the estimatedRowHeight to the table view. If that value is not given, automatic cell sizing will not work.
Senario A:
If I set the label content in cellForRowAtIndexPath, the cell correctly get resized.
Senario B:
If I change the text content in custom action in cell, the cell sized does not get changed.(I do call setNeedsLayout + layoutIfNeeded)
How to fix this?
EDIT:
1) I have set,
myTableView.estimatedRowHeight = 71.0
myTableView.rowHeight = UITableViewAutomaticDimension
2) I have correctly added auto layout constraints.
I was running into this issue, and my problem was that I was constraining the content to self (the UITableViewCell) and not to self.contentView (the contentView OF the cell). Hope this helps someone else who has built their cells all in code!
In my case, the cell's custom size was enabled:
After you change the text of the cell, just reload that particular cell or simply call mainTableView.reloadData().
To reload that cell-
//indexPath is indexPath of cell you just changed label of
mainTableView.reloadRows(at: indexPath, with: .automatic)
In my case, in the same cell I had an imageView in the top left corner with a "center vertically in container" constraint, and a "top space container" constraint.
Obviously to satisfy this two constraint the cell must have an height equal to:
(height of the imageView / 2) + (length of the top space container constraint).
This height is not enough to fit the label text, so my label had only 1 line visible.
After I have deleted the imageView top constraint all went to the right place, in my case i wanted the image to be centered, if the image had to stay in the top left corner I had to take off the "center vertically in container" constraint.
I hope this can help someone.
First of all, I don't specifically know what was your action on UITableViewCell. So, I assume I do that in UITableViewCell selection.
The below answer only work on iOS 9 and above
But, for some reason, it failed to do it in iOS 8 until it scroll. So, I will update the answer for iOS 8.
I have seen you have used UITableView's estimatedRowHeight and rowHeight at your project. So,
Please check the following
Make sure UITableView's estimatedRowHeight and rowHeight include inside viewDidLoad()
Make sure your UILabel lines set to 0
Make sure there is no constraints about height for your UILabel and let the constraints be like that :
If there are other component also included, make sure only bottom and top space constraints included or top space to container margin and bottom space to container margin.
Every time that you want to update the cell, you have to reload tableView no matter what your current situation will be.
So, don't say anything yet before you try this sample project, #Rikh answer still work. May be you are going in wrong direction. Here's the solution. Please do as I said steps by steps and let me know if that didn't work out. You might need to share your sample project which is causing.
Sample Demo - DynamicCellDemo
UPDATE for iOS 8 : update the following code for iOS 8 users
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
if #available(iOS 9, *) {
// do nothing
} else {
tblDynamic.reloadData()
}
}
what you can do is set the AutoLayout constraints for the label in present in the cell from all the sides that is from Top, Bottom, Leading and Trailing. Then add the following UITableViewDelegate method to your class.
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return 500
}
This will do the job. As now content in table view cell automatically adjusts the height of the cell.
Try this if it works:
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
Add the following in your viewDidLoad()
-(void)viewDidLoad{
[super viewDidLoad];
tableView.rowHeight = UITableViewAutomaticDimension
tableView.estimatedRowHeight = 140
}