I am using titleForHeaderInSection to show a header for a UITableView section. It worked fine with the iOS6 SDK, but the iOS7 SDK shows the header in all CAPS.
I guess it's part of Apple's updated Human Interface Guidelines; all examples in there show headers in all caps. Also, all section headers in Settings on my iPhone are in all caps.
However, I wonder if there is a way around that. Normally, I wouldn't mind showing caps if that improves consistency, but when I need to show people's names in a section header, it's a bit awkward.
Anybody any idea how to get around to capitalization?
Yes, we had very much a similar problem to this, and my own solution was as follows:
The Apple UITableViewHeaderFooterView documentation (the link to it is irritatingly long but you can find it easily with your favourite search engine) says you can access the textLabel of the header view without having to format your own view via viewForHeaderInSection method.
textLabel A primary text label for the view. (read-only)
#property(nonatomic, readonly, retain) UILabel *textLabel Discussion
Accessing the value in this property causes the view to create a
default label for displaying a detail text string. If you are managing
the content of the view yourself by adding subviews to the contentView
property, you should not access this property.
The label is sized to fit the content view area in the best way
possible based on the size of the string. Its size is also adjusted
depending on whether there is a detail text label present.
With some additional searching the best place to modify the label text was the willDisplayHeaderView method (suggested in How to implement `viewForHeaderInSection` on iOS7 style?).
So, the solution I came up with is pretty simple and just does a transformation of the text label string, after it's actually been set by titleForHeaderInSection:
-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
//I have a static list of section titles in SECTION_ARRAY for reference.
//Obviously your own section title code handles things differently to me.
return [SECTION_ARRAY objectAtIndex:section];
}
and then simply call the willDisplayHeaderView method to modify how it looks:
- (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section
{
if([view isKindOfClass:[UITableViewHeaderFooterView class]]){
UITableViewHeaderFooterView *tableViewHeaderFooterView = (UITableViewHeaderFooterView *) view;
tableViewHeaderFooterView.textLabel.text = [tableViewHeaderFooterView.textLabel.text capitalizedString];
}
}
You can put in your own 'if' or 'switch' clauses in there as the section number is also passed to the method, so hopefully it'll allow you to show your user/client name in capitalised words selectively.
solution which i found is add Title in "titleForHeaderInSection" method
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
return #"Table Title";
}
and then call the willDisplayHeaderView method to Update :
- (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section
{
UITableViewHeaderFooterView *header = (UITableViewHeaderFooterView *)view;
header.textLabel.textColor = [UIColor darkGrayColor];
header.textLabel.font = [UIFont boldSystemFontOfSize:18];
CGRect headerFrame = header.frame;
header.textLabel.frame = headerFrame;
header.textLabel.text= #"Table Title";
header.textLabel.textAlignment = NSTextAlignmentLeft;
}
In Swift,
override func tableView(tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
let headerView = view as! UITableViewHeaderFooterView
headerView.textLabel.text = "My_String"
}
If you want to just keep the string as it is, you could simply do this:
- (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section {
if ([view isKindOfClass:[UITableViewHeaderFooterView class]] && [self respondsToSelector:#selector(tableView:titleForHeaderInSection:)]) {
UITableViewHeaderFooterView *headerView = (UITableViewHeaderFooterView *)view;
headerView.textLabel.text = [self tableView:tableView titleForHeaderInSection:section];
}
}
Swift solution:
func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
if let headerView = view as? UITableViewHeaderFooterView, self.respondsToSelector(Selector("tableView:titleForHeaderInSection:")) {
headerView.textLabel?.text = self.tableView(tableView, titleForHeaderInSection: section)
}
}
One solution I found is to utilize UITableViewHeaderFooterView.
Instead of
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
return #"some title";
}
Do
- (UIView*)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
static NSString *identifier = #"defaultHeader";
UITableViewHeaderFooterView *headerView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:identifier];
if (!headerView) {
headerView = [[UITableViewHeaderFooterView alloc] initWithReuseIdentifier:identifier];
}
headerView.textLabel.text = #"some title";
return headerView;
}
The annoying downside is that the table view will no longer automatically adjust the section header height for you. So if your header heights varies, you'll have to do something like this:
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
id headerAppearance = [UILabel appearanceWhenContainedIn:[UITableViewHeaderFooterView class], nil];
UIFont *font = [headerAppearance font];
CGFloat viewWidth = CGRectGetWidth(tableView.frame);
CGFloat xInset = 10;
CGFloat yInset = 5;
CGFloat labelWidth = viewWidth - xInset * 2;
CGSize size = [sectionInfo.name sizeWithFont:font constrainedToSize:CGSizeMake(labelWidth, MAXFLOAT)];
return size.height + yInset * 2;
}
I really don't like hard-coding layout information (the inset) this way, as it might break in the future version. If anyone has a better solution to get/set the header height, I'm all ears.
Thanks #Animal451. This is more generic solution that would work with any type of header string.
// We need to return the actual text so the header height gets correctly calculated
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
return self.headerString;
}
- (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section
{
UITableViewHeaderFooterView *header = (UITableViewHeaderFooterView *)view;
[header.textLabel setText:self.headerString]; //String in the header becomes uppercase. Workaround to avoid that.
}
To avoid duplication the header string can be declared anywhere else. I have done it in the -viewDidLoad method.
In addition to #Animal451's post.
For swift 3 you can use
func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
guard section == 0 ,
let tableViewHeaderFooterView = view as? UITableViewHeaderFooterView
else { return }
tableViewHeaderFooterView.textLabel?.text = "Your awesome string"
}
And then ignore - titleForHeaderInSection:
Keep in mind that this code is for 1st section only. If you want to go through all of your sections, you'll need to add support for them
Swift 5
Static TableViewController & storyboard section title.
The below code will work the first letter capitalized.
override func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
let titleView = view as! UITableViewHeaderFooterView
titleView.textLabel?.text = titleView.textLabel?.text?.capitalized
}
Simplest Solution for was below: Swift 2.x
func tableView(tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
header.textLabel?.text = header.textLabel?.text?.capitalizedString
}
Swift 3.x:
if let headerView = view as? UITableViewHeaderFooterView {
headerView.textLabel?.text? = headerView.textLabel?.text?.capitalized ?? ""
}
The solution which worked for me was to create a simple UILabel Instance Variable to use as the section header view. (Your needs may be different, but for me, I only needed to have text in my header...)
Then, inside viewForHeaderInSection, I set up the label as required, and return this label as the header view.
Then, whenever I want to update the text in the header, I simply change the label's text directly.
In the .h file:
#property (nonatomic, retain) UILabel *sectionHeaderLabel;
then in the .m file:
- (UIView*)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
return [self refreshMySectionHeaderLabel]; // I created this handy little method to update the header text
}
// Get the latest text for the section header...
-(UILabel *) refreshMySectionHeaderLabel {
// Initialise the first time.
if( sectionHeaderLabel == nil ) {
sectionHeaderLabel = [[UILabel alloc] initWithFrame: CGRectNull];
}
// ...
// May also set other attributes here (e.g. colour, font, etc...)
// Figure out the text...
sectionHeaderLabel.text = #"Your updated text here...";
return sectionHeaderLabel;
}
When I want to update my section header, I simply call:
[self refreshMySectionHeaderLabel];
...or you could simply call:
sectionHeaderLabel.text = #"The new text...";
Take note: I only have 1 section (section 0). You may need to account for multiple sections...
One liner solution, based on #Dheeraj D answer:
override func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
(view as? UITableViewHeaderFooterView)?.textLabel?.text = (view as? UITableViewHeaderFooterView)?.textLabel?.text?.capitalized
}
SWIFT
In implementation, i found out that you need to specify section header text in both titleForHeaderInSection & willDisplayHeaderView function, othervise header hides.
extension ViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
let sectionHeader = datasource[section].sectionHeader
// Header Title
return sectionHeader
}
func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
guard let header = view as? UITableViewHeaderFooterView else { return }
header.textLabel?.textColor = UIColor.darkGray
header.textLabel?.font = UIFont.systemFont(ofSize: 20, weight: .semibold)
header.textLabel?.frame = header.frame
// Header Title
header.textLabel?.text = datasource[section].sectionHeader
}
}
Use the method viewForHeaderInSection to create the header title.
In viewDidLoad register a UITableViewHeaderFooterView
tableView.register(UITableViewHeaderFooterView.self, forHeaderFooterViewReuseIdentifier: "HeaderFooterViewID")
add delegate
override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let header = tableView.dequeueReusableHeaderFooterView(withIdentifier: "HeaderFooterViewID")
var config = header?.defaultContentConfiguration()
let title = "My Header Title"
let attribute = [ NSAttributedString.Key.foregroundColor: UIColor.blue ]
config?.attributedText = NSAttributedString(string: title, attributes: attribute)
header?.contentConfiguration = config
return header
}
You can adjust the attributed text more, reference
With RubyMotion / RedPotion, paste this into your TableScreen:
def tableView(_, willDisplayHeaderView: view, forSection: section)
view.textLabel.text = self.tableView(_, titleForHeaderInSection: section)
end
I think what's happening is that somewhere in there the text gets set to ALL CAPS. This little trick RESETS the text back to whatever it was originally. Works like a charm for me!
I have a UITableView with edit mode enabled in my -viewDidLoad method. My problem is that I don't need the three-line 'move' symbol on the right of each cell.
[tableview setEditing:YES];
tableview.allowsSelectionDuringEditing=YES;
I need to either have a transparent disclosure button, or hide the disclosure button altogether. I have tried:
cell.editingAccessoryType = UITableViewCellAccessoryNone;
But this has no effect. Can anybody help me with this?
You can do that in your cell subclass using the below method. I don't think it will work as-is , you need to amend it. But this should be your lead.
- (void)willTransitionToState:(UITableViewCellStateMask)state {
[super willTransitionToState:state];
//check whether you need it.
if ((state & UITableViewCellStateShowingEditControlMask) == UITableViewCellStateDefaultMask) {
for (UIView *subview in self.subviews) {
//check for reorder control. it checks for delete button.
if ([NSStringFromClass([subview class]) isEqualToString:#"UITableViewCellDeleteConfirmationControl"]) {
subview.hidden = YES;
subview.alpha = 0.0;
}
}
}
}
Modify tableView(_:canMoveRowAt) and return false, this is an UITableViewDataSource method.
func tableView(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
return false
}
When building an iPad App, how can you draw a border around a UICollectionViewCell?
More details: I implemented a class ProductCell which extends UICollectionViewCell. Now, I would like to assign some fancy details, e.g. a border, shadow, etc. However, when trying to use something like this here, Xcode tells me that the receiver type 'CALayer' is a forward declaration.
Just for a bit more implementation:
#import <QuartzCore/QuartzCore.h>
in your.m
Make sure your class implements
- (UICollectionViewCell *)collectionView:(UICollectionView *)cv cellForItemAtIndexPath:(NSIndexPath *)indexPath;
as this is where the cell is setup.
You can then change cell.layer.background (only available once quartz is imported)
See below
- (UICollectionViewCell *)collectionView:(UICollectionView *)cv cellForItemAtIndexPath:(NSIndexPath *)indexPath {
MyCollectionViewCell *cell = [cv dequeueReusableCellWithReuseIdentifier:#"pressieCell" forIndexPath:indexPath];
//other cell setup here
cell.layer.borderWidth=1.0f;
cell.layer.borderColor=[UIColor blueColor].CGColor;
return cell;
}
Swift
Updated for Swift 3
Assuming you have your Collection View set up with the required methods, you can just write a few lines of code to add the border.
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath as IndexPath) as! MyCollectionViewCell
cell.myLabel.text = self.items[indexPath.item]
cell.backgroundColor = UIColor.cyan
// add a border
cell.layer.borderColor = UIColor.black.cgColor
cell.layer.borderWidth = 1
cell.layer.cornerRadius = 8 // optional
return cell
}
Notes
It is not necessary to import QuartzCore in Swift if you have already imported UIKit.
If you also want to add shadow, then see this answer.
You need to include the framework QuartzCore and import the header into your class:
#import <QuartzCore/QuartzCore.h>
Swift 4
cell.layer.borderColor = UIColor.black.cgColor
cell.layer.borderWidth = 1
Add it in datasource method, after creating the cell
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath)
cell.layer.borderColor = UIColor.black.cgColor
cell.layer.borderWidth = 1
}
I think it is better to add this config into your custom cell implementation, not in datasource delegate method.
cell.layer.borderColor = UIColor.black.cgColor
cell.layer.borderWidth = 1
cell.layer.cornerRadius = 8 // optional
I have added a UITextField as a subview of a UITableViewCell. Then I have added a target and selector so that I can know when UIControlEventEditingChanged. This works great, but I would like you know the indexPath of the cell that the UITextField is in, as it could be added to any number of cells.
Is this possible? Basically I want to find the parent view which is a UITableViewCell.
Call [UIView superview] on the field to get the cell that it's in, then call [UITableView indexPathForCell:] on the cell to get the index path.
UPDATE: on iOS 7 you need to call superview on that view too (extra layer of views); here's a category on UITableView that should work independent of iOS version:
#interface UITableView (MyCoolExtension)
- (NSIndexPath *)indexPathForCellContainingView:(UIView *)view;
#end
#implementation UITableView (MyCoolExtension)
- (NSIndexPath *)indexPathForCellContainingView:(UIView *)view {
while (view != nil) {
if ([view isKindOfClass:[UITableViewCell class]]) {
return [self indexPathForCell:(UITableViewCell *)view];
} else {
view = [view superview];
}
}
return nil;
}
#end
Instead of recursively trying to find the superview, there's a simpler solution:
Swift
func indexPathForCellContainingView(view: UIView, inTableView tableView:UITableView) -> NSIndexPath? {
let viewCenterRelativeToTableview = tableView.convertPoint(CGPointMake(CGRectGetMidX(view.bounds), CGRectGetMidY(view.bounds)), fromView:view)
return tableView.indexPathForRowAtPoint(viewCenterRelativeToTableview)
}
Objective-C
- (NSIndexPath *)indexPathForCellContainingView:(UIView *)view inTableView:(UITableView *)tableView {
CGPoint viewCenterRelativeToTableview = [tableView convertPoint:CGPointMake(CGRectGetMidX(view.bounds), CGRectGetMidY(view.bounds)) fromView:view];
NSIndexPath *cellIndexPath = [tableView indexPathForRowAtPoint:viewCenterRelativeToTableview];
return cellIndexPath
}
I made this into a Gist for the Swift hearted
Try this solution. It worked for me
#pragma mark - Get textfield indexpath
- (NSIndexPath *)TextFieldIndexpath:(UITextField *)textField
{
CGPoint origin = textField.frame.origin;
CGPoint point = [textField.superview convertPoint:origin toView:self.TblView];
NSIndexPath * indexPath = [self.TblView indexPathForRowAtPoint:point];
NSLog(#"Indexpath = %#", indexPath);
return indexPath;
}
I would like to share #Ertebolle code in swift -
extension UITableView
{
func indexPathForCellContainingView(view1:UIView?)->NSIndexPath?
{
var view = view1;
while view != nil {
if (view?.isKindOfClass(UITableViewCell) == true)
{
return self.indexPathForCell(view as! UITableViewCell)!
}
else
{
view = view?.superview;
}
}
return nil
}
}
Swift 4/5
func indexPathForCellContainingView(view: UIView,
inTableView tableView:UITableView) -> IndexPath? {
let viewCenterRelativeToTableview =
tableView.convert(CGPoint(x: view.bounds.midX, y: view.bounds.midY), to: view)
return tableView.indexPathForRow(at: viewCenterRelativeToTableview)
}
I have a tableView with 10 sections and each section has 3 rows.
Is it possible to reoder the section using the tableViewDelegate methods
-(BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
return YES;
}
-(void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath
toIndexPath:(NSIndexPath *)toIndexPath {
}
Right now if i am dragging a row from one section and dropping it on another section, its being added to that section. The footer view is also not being selected for reordering, and it remains in the original section.
Any ideas?
Thanks
Since this comes up as one of the first results in Google I thought I'd add the swift code. The Objective-C will is almost the same except for the name of the indexPaths in moveRowAtIndex.
Enable editing mode:
If you're using a UITableViewController you toggle editing mode with:
func toggleEditing() {
self.editing = !self.editing
}
If you're not using a UITableViewController (e.g. you have added a table view to a UIViewController (or any View Controller other than UITableViewController) then you toggle it with:
func toggleEditing() {
self.editing = !self.editing
}
Note: tableView is the name of your UITableView.
Implement canMoveRowAtIndexPath
override func tableView(tableView: UITableView, canMoveRowAtIndexPath indexPath: NSIndexPath) -> Bool {
return true
}
Implement moveRowAtIndexPath
override func tableView(tableView: UITableView, moveRowAtIndexPath fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath) {
var itemToMove = tableData[fromIndexPath.row]
tableData.removeAtIndex(fromIndexPath.row)
tableData.insert(itemToMove, atIndex: toIndexPath.row)
}
Check out this tutorial: Add, Delete & Reorder UITableView Rows. There's a working project at the end of the tutorial.