I implemented expandable sections on my UITableView and now my problem is that when the UIViewController loads the table there are rows below the section.
Not expanded:
Expanded:
I want the UITableView to have no rows if the section is not expanded so I can set another UIView below the section. When the section is expanded the UIView should disappear and the table view to be presented on the whole screen.
Simply implement the viewForFooterInSection and return an empty view.
func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
return UIView(frame: .zero)
}
func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
return UIView()
}
just use this code it will remove your unwanted rows.
Related
I have a tableview and tabview (3 different tab).I want to show 4 section for first tab , 3 section for second tab and . 2 section for third tab.
Just first section's header must be sticky top of the view.Because of this I have implemented headerview just first section but header scrolls and be hidden like a tableview cell .it is not stick on top of the screen.What is the problem here?.Must I implement or override a specific function of tableview?
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
if section == 0{
return UITableView.automaticDimension
}else {
return 0 //sadece 1. sectionda tablar header olarak olacak diğerlerinde header olmayacak
}
}
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return CGFloat.leastNormalMagnitude
}
func numberOfSections(in tableView: UITableView) -> Int {
if dataReady {
totalSectionCount = getSectionCount()
return totalSectionCount
}else {
return 1 //permanent because of tabview
}
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int{
if !dataReady || ApplicationContext.instance.userAuthenticationStatus.value == .semiSecure{
return 1//for shimmer cell and semisecure view
}else {
return getNumberOfRows(sectionNumber: section)
}
}
There is not any function which restricts Specific Header To Stick and Specific To Scroll. If you defined a header for a section, it will scroll up and will be hidden when next section header comes up.
In your case, you must define first header view/cell as Section Header and manage other headers in cellForRowAt() method. Because you want them to scroll up and not stick at top.
I am developing an application in Swift3 where I have to show and hide UITableView Header for different users. For displaying UITableView Header View, I have created a custom class CustomHeaderCell of UITableViewCell.
Here is my code:
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 235.0
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let headerCell = tableView.dequeueReusableCell(withIdentifier: "HeaderCell") as! CustomHeaderCell
return headerCell
}
Now Can anyone please help me to hide this Header of my UITableView?
Note: I tried using this tableView.tableHeaderView?.isHidden = true, but not working. Should I need to do the validation in heightForHeaderInSection?
Reference Link to Add HeaderViewCell: http://www.accella.net/knowledgebase/custom-header-and-footer-views-for-uitableviews/
If you have a way to differentiate users then you can just change the header height like this
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
if userA {
return 235.0
} else {
return 0
}
}
That should help in hiding the header
You are mixing tableHeaderView and section header views, which are differents:
tableHeaderView is a view showed as a header for the whole UITableView
section header views are reusable views used for displaying header above each section
In your case, you want to use section header views, so you should return empty ones for non concerned users (I assume here sectionNeedHeader will be replaced by your condition).
Also, you better use UITableViewHeaderFooterView instead of UITableViewCell. The behavior is globally the same but it's made for this usage:
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
if sectionNeedHeader {
return 235.0
}
return 0.0
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
if sectionNeedHeader {
let headerCell = tableView.dequeueReusableHeaderFooterView(withIdentifier: "HeaderView") as! CustomHeaderView
return headerView
}
return nil
}
I am using UITableView grouped and using multiple sections. I am using these codes to hide the footer for sections.
self.tableView.estimatedSectionFooterHeight = 0
self.tableView.sectionFooterHeight = 0
public func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return 0.0
}
public func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
return UIView()
}
Only Footer for section 0 is not getting hidden.
Here is the screenshot:
Please help!
If you are using grouped tableview then there will be footer always and it never accepts 0 value. But you can return 0.5 or 1 to fix your problem and no need to override viewForFooterInSection
Sorry guys to bother, what I have done is I was also hiding sections and header which don't have any rows.
So one of the header was not getting hidden as I was returning empty UIView() in viewForHeaderInSection. Though I was returning 0 in heightForHeaderInSection for sections which don't have rows.
The problem is now solved as I am returning nil in viewForHeaderInSection.
Screenshot:
Coding in Swift 3. Have a tableView with custom cells and header.
I have a tableView with custom cells and headers. The headers have two (2) labels in them and have dynamic cell heights since the labels may be long. My problem is the first time the tableView and sections are configured the label appears as it should, HOWEVER, after scrolling down and then back up the headers' layout somehow breaks.
As you can see below, after I scroll down then back up to the cells, the label is getting cutoff.
After printing out what methods are being called I found that the first time scrolling down the tableView the following two (2) override functions are called.
override func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
print("\(section) heightForHeaderInSection")
print("\(section) returning AUTO for header")
return UITableViewAutomaticDimension
}
override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
print("\(section) viewForHeaderInSection")
let header = tableView.dequeueReusableCell(withIdentifier: "QuestionHeader") as! QuestionHeader
header.delegate = self
header.contentView.backgroundColor = UIColor.groupTableViewBackground
header.questionTextLabel.text = String(questionStringArray[section])
header.questionNumberLabel.text = (String(section + 1) + ")")
return header.contentView
}
But when i scroll back up ONLY the viewForHeader function is called and I think because the height is no longer being set to UITableViewAutomaticDimension the labels get cutoff?
Any ideas?
You should return header instead of header.contentView from tableView: viewForHeaderInSection: method:
override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let header = tableView.dequeueReusableCell(...
...
return header
}
I have a UITableView in the storyboard with also a header and a footer defined as can be seen in the picture.
However, the header disappears when I move the cell (it seems the header is the top cell). Same thing with the footer. It appears after I have browsed through all cells.
I tried to move the header and the footer outside of the Cell hierarchy. But this resulted in being not visible any more.
How can I make the header and footer sticky?
Don't confuse the section header and footer with the table header and footer.
The section header and footer, in a non-grouped table, are pinned to the top and bottom of the table while you scroll.
But the table header and footer, as you rightly say, are sort of like cells: they are before the first section and after the last section, and they scroll with the table.
If that's not what you want — that is, if there is something you want to show above the table and below the table, all the time — then you need to put them above and below the table view as completely separate views:
thing above
table
thing below
Of course, if you do that, you can't use a UITableViewController. You'll have to have a normal view controller, with the table view as an embedded view and the table view controller as a child view controller.
When using static UITableViews, you can't add custom views as header. You need to set the header and footer like this:
//Header
override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
//return your custom view here
}
//Footer
override func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
//return your custom view here
}
You also have to specify the height of your header/footer:
override func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
//return the height
}
override func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
//return the height
}