I would like to know how to get the textLabel string value of the selected uitableviewcell.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
// now you can use cell.textLabel.text
}
You can get the cell using [self.tableView cellForRowAtIndexPath:] and then access its textLabel.text property, but there's usually a better way.
Typically you've populated your table based on some model array that your UITableViewController has access to. So a better way to handle this in most cases is to take the row number of the cell that was selected and use that to find the associated data in your model.
For example, let's say your controller has an array of Buddy objects, which have a name property:
NSArray *buddies;
You populate this array by running a query or something. Then in tableView:cellForRowAtIndexPath: you build a table view cell based on each buddy's name:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"BuddyCell"];
if (!cell) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"BuddyCell"] autorelease];
}
cell.textLabel.text = [buddies objectAtIndex:indexPath.row];
return cell;
}
Now when the user selects a row, you just pull the corresponding Buddy object out of your array and do something with it.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
Buddy *myBuddy = [buddies objectAtIndex:indexPath.row];
NSLog (#"Buddy selected: %#", myBuddy.name);
}
if (selected)
{
indicator.image = [UIImage imageNamed:#"IsSelected.png"];
[arrSlectedItem addObject:strselecteditem];
NSLog(#"-- added name is %#", strselecteditem);
}
else
{
indicator.image = [UIImage imageNamed:#"NotSelected.png"];
[arrSlectedItem removeObject:strselecteditem];
NSLog(#"--- remove element is -- %#", strselecteditem);
}
If anyone stumbles across this and is wondering how to do this in swift the code is below. Also remember to use optional binding to unwrap that optional and also avoid printing out "Optional("Tapped Item Label")".
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let cell = tableView.cellForRowAtIndexPath(indexPath)
// Unwrap that optional
if let label = cell?.textLabel?.text {
println("Tapped \(label)")
}
}
Here what i used;very simple
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath){
if editingStyle == UITableViewCellEditingStyle.Delete
{
//create cellobj with indexpath for get it text
let cell = tableView.cellForRowAtIndexPath(indexPath)
let celltext = (cell?.textLabel?.text!)! as String
//do what ever you want with value
print((cell?.textLabel?.text!)! as String)
}
}
Related
I've programmatically created a UITableView and added UISwitch to it's cell accessory view.
This is my code for UISwitch in cell accessory view in cellForRowAtIndexPath method.
UISwitch *accessorySwitch = [[UISwitch alloc]initWithFrame:CGRectZero];
[accessorySwitch setOn:NO animated:YES];
[accessorySwitch addTarget:self action:#selector(changeSwitch:) forControlEvents:UIControlEventValueChanged];
cell.accessoryView = accessorySwitch;
This is the method which is called after the button is clicked.
- (void)changeSwitch:(UISwitch *)sender{
UITableViewCell *cell = (UITableViewCell *)[sender superview];
NSIndexPath *indexPath = [self.filterTableView indexPathForCell:cell];
NSLog(#"%ld",(long)indexPath);
……………. My other code…….
}
I am able to print the index path value in iOS 6
But in iOS 7 it prints nil,
Am i missing anything in iOS 7 or there is some other approach to get the indexPath in iOS 7
Thanks,
Arun.
NSLog(#"%ld",(long)indexPath); is wrong this will print the pointer address of indexPath
try using following codes
CGPoint center= sender.center;
CGPoint rootViewPoint = [sender.superview convertPoint:center toView:self.filterTableView];
NSIndexPath *indexPath = [self.filterTableView indexPathForRowAtPoint:rootViewPoint];
NSLog(#"%#",indexPath);
Swift solution:
A UITableView extension like this one can be useful for this.
extension UITableView {
func indexPathForView(view: AnyObject) -> NSIndexPath? {
let originInTableView = self.convertPoint(CGPointZero, fromView: (view as! UIView))
return self.indexPathForRowAtPoint(originInTableView)
}
}
Usage becomes easy everywhere.
let indexPath = tableView.indexPathForView(button)
If you have button in cell. You can get cell by calling superview. And then can get Indexpath by this way.
(void)obButtonTap:(UIButton *)sender {
UITableViewCell *cell = (UITableViewCell *)sender.superview;
NSIndexPath *indexPath = [tableView indexPathForCell:cell];
}
You can assign tags to each switch in cellForRowAtIndexPath method like
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UISwitch *accessorySwitch = [[UISwitch alloc]initWithFrame:CGRectZero];
[accessorySwitch setOn:NO animated:YES];
[accessorySwitch addTarget:self action:#selector(changeSwitch:) forControlEvents:UIControlEventValueChanged];
cell.accessoryView = accessorySwitch;
accessorySwitch.tag = indexPath.row;
}
- (void)changeSwitch:(UISwitch *)sender{
NSIndexPath *indexPath = [NSIndexPath indexPathWithIndex:[sender tag]];
NSLog(#"%ld",(long)indexPath);
}
SWIFT 4 :
extension UITableView {
func indexPathForView(view: AnyObject) -> NSIndexPath? {
let originInTableView = self.convert(CGPoint.zero, from: (view as! UIView))
return self.indexPathForRow(at: originInTableView)! as NSIndexPath
}
}
SWIFT 4 Conversion, creates global extension:
extension UITableView {
func indexPathForView(view: UIView) -> IndexPath? {
let originInTableView = self.convert(CGPoint.zero, from: (view))
return self.indexPathForRow(at: originInTableView)
}
}
Usage example:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = ...
cell.myButton.addTarget(self, action: #selector(myButtonAction(_:)), for: .primaryActionTriggered)
return cell
}
#objc func myButtonAction(_ button:UIButton) {
guard let ip = self.tableView.indexPathForView(view: button) else {
return
}
}
You are probably getting burned, making the assumption that the switch's superview is going to be the tableViewCell. Maybe in iOS 7 they changed the hierarchy to achieve some sort of visual effect; maybe there is a new view inserted in there.
You could possibly subclass UISwitch and give it an indexPath property. Then in your cellForRowAtIndexPath, assign it there so you have a reference.
Tested on Swift5.x
if you want to get row number when you click on the button placed in tableViewCell, Then the below function will work.
#IBAction func buttonClickeAction(_ sender: UIButton) {
let btnPoint = sender.convert(CGPoint.zero, to: self.tableView)
let indexPath = self.tableView.indexPathForRow(at: btnPoint)
print(indexPath?.row)
}
I think that is dangerous to rely on the position of the button to know which one have been clicked.
I prefere create a dictionary taking as a key the button/switch itself, and as a value the indexpath :
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
...
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
NSValue * accessorySwitchKey = [NSValue valueWithNonretainedObject:[cell settingSwitch]];
[[self switchIndexDictionary]setObject:indexPath accessorySwitchKey];
...
}
then when the switch/button is triggered I get the indexpath easily from my dictionary :
- (void)toggleSetting:(id)sender
{
UISwitch *selectedSwitch = (UISwitch *) sender;
NSValue * accessorySwitchKey = [NSValue valueWithNonretainedObject:selectedSwitch];
NSIndexPath *indexPath = [[self switchIndexDictionary]objectForKey: accessorySwitchKey];
}
I want to change the accessory view type of a cell through the method: didSelectRowAtIndexPath , i.e. when a row is selected I want to change the accessory view type, can I do this inside that method ?
You can get the cell from didSelectRowAtIndexPath: method using the indexPath like this.
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
In Swift 3.0 : You can use these 2 ways, according to your need
let cell:UITableViewCell = tableView.cellForRow(at: indexPath) as UITableViewCell
or
let cell:CustomTableViewCell = tableView.cellForRow(at: indexPath) as! CustomTableViewCell
Happy Coding !!
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath;
{
UITableViewCell *myCell = [tableView cellForRowAtIndexPath:indexPath];
// Access accessory View as below.
UIView * myCellAccessoryView = myCell.accessoryView;
}
Use the below function and pass the index path of the selected row so that the particular cell is reloaded again.
- (void)reloadRowsAtIndexPaths:(NSArray *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation
Another solution: store the selected row index and do a reload of tableview. Then in cellForRowAtIndexPath check for the selected row and change the accessory view of the cell.
Swift
You can get the cell from didSelectRowAtIndexPath: method using the indexPath like this:
let cell:UITableViewCell? = tableView.cellForRowAtIndexPath(indexPath)
Store selected indexpath. for eg:
NSInteger selectedIndexPath;
then follow the step below. set your accessory view.
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
AddressTableViewCell *cell=(AddressTableViewCell *)[tableView dequeueReusableCellWithIdentifier:cellIdentifier];
cell.backgroundColor=[UIColor lightGrayColor];
Address *addr=[self.locationArray objectAtIndex:indexPath.row];
cell.titleLabel.text = addr.addressTitle;
cell.detailLabel.text = addr.addressDetail;
if (indexPath.row == selectedIndexPath) {
[cell.selectButton setImage:[UIImage imageNamed:#"checkboxFilled"] forState:UIControlStateNormal];
}
else {
[cell.selectButton setImage:[UIImage imageNamed:#"checkbox"] forState:UIControlStateNormal];
}
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
selectedIndexPath=indexPath.row;
[self.tableView reloadData];
}
I've got a UITableView with each row containing a checkbox using UITableViewCellAccessoryCheckmark. I can't figure out how to uncheck all the checkboxes using the didSelectRowAtIndexPath method.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *oldCell;
int count = [self.myTableRowNamesArray count];
for (NSUInteger i = 0; i < count; ++i) {
// Uncheck all checkboxes
// OF COURSE THIS DOESN'T WORK
// BECAUSE i IS AN INTEGER AND INDEXPATH IS A POINTER
FOO: oldCell = [myTableView cellForRowAtIndexPath:(int)i];
// GOOD CODE:
oldCell = [penanceOptionsTableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:i inSection:0]];
oldCell.accessoryType = UITableViewCellAccessoryNone;
}
UITableViewCell *newCell = [myTableView cellForRowAtIndexPath:indexPath];
newCell.accessoryType = UITableViewCellAccessoryCheckmark;
}
Instead of modifying the .accessoryType of all cells in didSelectRowAtIndexPath:, I suggest storing the selected index in some ivar, and change the .accessoryType in the data source's -tableView:cellForRowAtIndexPath: method, i.e.
-(void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath {
self.selectedIndexPath = indexPath;
[tableView reloadData];
}
-(UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath {
...
cell.accessoryType = [indexPath compare:self.selectedIndexPath] == NSOrderedSame
? UITableViewCellAccessoryCheckmark
: UITableViewCellAccessoryNone;
...
}
With this, only visible cells will be affected, and the million other cells outside of the screen won't need to be modified.
Quite right, here's a full implementation in Swift in the general case of selecting a cell .. you'd use selectedIndexPath elsewhere in the class as you see fit. For example, in cellForRowAtIndexPath to choose the appropriate cell prototype.
// SelectingTableViewController
import UIKit
class SelectingTableViewController: UITableViewController
{
internal var selectedIndexPath:NSIndexPath? = nil
override func viewDidLoad()
{
super.viewDidLoad()
tableView.estimatedRowHeight = 68.0
tableView.rowHeight = UITableViewAutomaticDimension
self.clearsSelectionOnViewWillAppear = false;
}
override func tableView
(tableView:UITableView, didSelectRowAtIndexPath indexPath:NSIndexPath)
{
print("did select....")
// in fact, was this very row selected,
// and the user is clicking to deselect it...
// if you don't want "click a selected row to deselect"
// then on't include this clause.
if selectedIndexPath == indexPath
{
print("(user clicked on selected to deselect)")
selectedIndexPath = nil
tableView.reloadRowsAtIndexPaths(
[indexPath],
withRowAnimation:UITableViewRowAnimation.None)
tableView.deselectRowAtIndexPath(indexPath, animated:false)
return
}
// in fact, was some other row selected??
// user is changing to this row? if so, also deselect that row
if selectedIndexPath != nil
{
let pleaseRedrawMe = selectedIndexPath!
// (note that it will be drawn un-selected
// since we're chaging the 'selectedIndexPath' global)
selectedIndexPath = indexPath
tableView.reloadRowsAtIndexPaths(
[pleaseRedrawMe, indexPath],
withRowAnimation:UITableViewRowAnimation.None)
return;
}
// no previous selection.
// simply select that new one the user just touched.
// note that you can not use Apple's willDeselectRowAtIndexPath
// functions ... because they are freaky
selectedIndexPath = indexPath
tableView.reloadRowsAtIndexPaths(
[indexPath],
withRowAnimation:UITableViewRowAnimation.None)
}
}
for (UITableViewCell *cell in [myTableView visibleCells]) {
cell.accessoryType = UITableViewCellAccessoryNone;
}
But really, you'd be better off just modifying the one cell that actually has the checkmark set. You have to have stored this information somewhere in your model anyway.
You're probably setting some kind of property with this method.
So what i do is:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// 1. first unsetting the property
[object someProperty:nil];
// 2. call the reloadData method to uncheck all the checkmarks
[tableView reloadData];
// 3. check the selected cell
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
[cell setAccessoryType:UITableViewCellAccessoryCheckmark];
// 4. set the checked property
[object setSomeProperty:[indexpath row]];
}
And in my cellForRowAtIndexPath methods i got something like the following code:
if([object someProperty] == [indexpath row]){
[cell setAccessoryType:UITableViewCellAccessoryCheckmark];
} else {
[cell setAccessoryType:UITableViewCellAccessoryNone];
}
Yes, cellForRowAtIndexPath: uses NSIndexPath instead of integer so make indexpath by using
indexPathForRow:inSection:
if you are using one section then your loop is fine just pass i in row and 0 for section.
How can I add a UITableView into my View-Based Application where the user will tap on more than one cell, and it will become selected, exactly like the Clock app's "New Alarm" setting named "Repeat" (Clock>Alarms> + >Repeat), and how can I get all of the selected cells in an array?
For multiple selection, add the line below in viewDidLoad()
tableView.allowsMultipleSelection = true
Configure each cell after dequeuing (or initializing) it in tableView(_:cellForRowAt:)
let selectedIndexPaths = tableView.indexPathsForSelectedRows
let rowIsSelected = selectedIndexPaths != nil && selectedIndexPaths!.contains(indexPath)
cell.accessoryType = rowIsSelected ? .checkmark : .none
// cell.accessoryView.hidden = !rowIsSelected // if using a custom image
Update each cell when it's selected/deselected
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath)!
cell.accessoryType = .checkmark
// cell.accessoryView.hidden = false // if using a custom image
}
override func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
let cell = tableView.cellForRow(at: indexPath)!
cell.accessoryType = .none
// cell.accessoryView.hidden = true // if using a custom image
}
When you're done, get an array of all the selected rows
let selectedRows = tableView.indexPathsForSelectedRows
and get the selected data, where dataArray maps to the rows of a table view with only 1 section
let selectedData = selectedRows?.map { dataArray[$0.row].ID }
In your implementation of -tableView:didSelectRowAtIndexPath: you would set the table view cell's accessoryType property depending on its current value (so it would toggle on and off with multiple taps). For example:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)path {
UITableViewCell *cell = [tableView cellForRowAtIndexPath:path];
if (cell.accessoryType == UITableViewCellAccessoryCheckmark) {
cell.accessoryType = UITableViewCellAccessoryNone;
} else {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
}
You could either maintain an array of selected states in addition to the cells' own accessory type state, or iterate over the cells in the table view querying for each one's state in order to read out the selected rows.
#BrendanBreg implementation didn't worked for me. #RaphaelOliveira provided good solution, but when you scrolls your table down - wrong rows become selected (because UITableView caches it's cells). So, I've slightly modified Raphael's solution:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell* cell = [tableView cellForRowAtIndexPath:indexPath];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell* cell = [tableView cellForRowAtIndexPath:indexPath];
cell.accessoryType = UITableViewCellAccessoryNone;
}
/*Here is modified part*/
- (UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
/*
...
Your implementation stays here
we're just adding few lines to make sure
that only correct rows will be selected
*/
if([[tableView indexPathsForSelectedRows] containsObject:indexPath]) {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
} else {
cell.accessoryType = UITableViewCellAccessoryNone;
}
}
self.tableView.allowsMultipleSelection = YES;
Just a quick tip in addition to the great answer above: to mimic Apple's style from the clock app (making the row select color fade back out after checking / unchecking the row), add this to the didSelectRowAtIndexPath, after the conditionals:
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
From Apple's TableMultiSelect guide.
Here it is what you needed
http://developer.apple.com/library/ios/#samplecode/TableMultiSelect/Introduction/Intro.html#//apple_ref/doc/uid/DTS40011189-Intro-DontLinkElementID_2
I have seen this problem with so many developers. Due to table view's nature of re-using cell it removes or haphazard the checks. I have created a working solution for that. Clone/download code from DevelopmentSupportWorkspace and Execute UITableViewTest project from there.
Here is code summery for that:
#interface CheckBoxTestTableViewController ()
#property (nonatomic, strong) NSArray *dataArray;
#property (nonatomic, strong) NSMutableDictionary *selectedIndexDictionary;
#end
#implementation CheckBoxTestTableViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem;
//
_dataArray = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"ImageList" ofType:#"plist"]];
_selectedIndexDictionary = [NSMutableDictionary dictionary];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return _dataArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"checkMarkCell" forIndexPath:indexPath];
cell.accessoryType = UITableViewCellAccessoryNone;
// Configure the cell...
cell.textLabel.text = _dataArray[indexPath.row][#"text"];
if (_selectedIndexDictionary[indexPath] != nil) cell.accessoryType = UITableViewCellAccessoryCheckmark;
return cell;
}
- (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(nonnull NSIndexPath *)indexPath {
if (_selectedIndexDictionary[indexPath] == nil) {
[_selectedIndexDictionary setObject:_dataArray[indexPath.row] forKey:indexPath];
[[tableView cellForRowAtIndexPath:indexPath] setAccessoryType:UITableViewCellAccessoryCheckmark];
}else{
[_selectedIndexDictionary removeObjectForKey:indexPath];
[[tableView cellForRowAtIndexPath:indexPath] setAccessoryType:UITableViewCellAccessoryNone];
}
// [tableView reloadRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
#end
The clock alarms repeat table view is not multiple selection. Think of it as a lit of checkboxes.
When a cell is selected, the font color and accessory type are changed and the selection fades out. When a checked cell is selected, the font color and accessory type are changed back and the selection fades out.
In your didSelectRowAtIndexPath delegate method, you would set the text color and accessory type for the selected cell, then deselect the cell. You would also record the new state in your data model. That could be as simple as a bit mask representing the selected state, but depends on what data you are displaying.
In your cellForRowAtIndexPath: dataSource method, set the text color and accessory type based on your data model.
Actual multiple selection would be similar. You have to keep track of which cells are selected, and set the selected cell of each state as it is created or shown. When the table view reports that a cell is selected, toggle the selection state in your data model and set the selected state of the cell accordingly.
You can't key off indexPath because the cells that refers to changes as you scoll. Put an NSLog in cellForRowAtIndexPath to see that. You can do the check/uncheck in willSelectRowAtIndexPath or didSelectRowAtIndexPath. That covers only the initial check or uncheck though, and will also have things appear as checked once you've scrolled because the underlying cell for a given indexPath changes.
So the solution I found is to have an array of selected things with something that is specific to that given cell, and do the initial check.
- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell* cell = [tableView cellForRowAtIndexPath:indexPath];
if (![selectedIndexes containsObject:cell.textLabel.text]){
[selectedIndexes addObject:cell.textLabel.text];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
} else {
[selectedIndexes removeObject:cell.textLabel.text];
cell.accessoryType = UITableViewCellAccessoryNone;
}
return indexPath;
}
You also have to have logic in cellForRowAtIndexPath to make sure the right stuff is checked or not as the view scrolls:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
...
cell.accessoryType = UITableViewCellAccessoryNone;
if ([selectedIndexes containsObject:cell.textLabel.text]) {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
[cell setSelected:YES animated:YES];
}
return cell;
}
1 - Allow multiple selection and toggle of selected state:
tableView.allowsMultipleSelection = true
2 - Collect or get an array of all selected indices when you are done:
let selected = tableView.indexPathsForSelectedRows
Note: This is independent of which cells are currently showing on screen.
3 - Change the appearance of the cell depending on selected state: Override this method in your UITableViewCell subclass. If you don't have a subclass, make one.
// In UITableViewCell subclass
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
accessoryType = selected ? .Checkmark : .None
}
I know that this is an old posting, but for future use, the following code will solve the problem of ensuring that a checkmark will only appear on selected rows during scrolling:
override func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
cell.accessoryType = (cell.isSelected) ? .checkmark : .none
}
After quite a long time perusing the web i have decided to come here as i usually have my questions answered super speedy and super well on Stack Overflow!
I am attempting to complete the following and would be grateful of any suggestions or pointers in the right direction:
Display a UITableView
When a "+" button is pressed a UITextField is added to a row of the UITableView
The user can type a string into this field
If the user selects the "+" Button again another UITextfield is added to the next row. (You get the idea)
When the user is done adding UITextFields and filling them in they can hit a "Save" button at which point all entries in each row are saved to an array.
Any suggestions regarding this would be greatly appreciated
Thanks!
Tom
This pseudocode might be a starting point:
// define an NSMutableArray called fields
- (IBAction)addField:(id)sender {
// create a new text field here and add it to the array
// then reload data
}
- (IBAction)save:(id)sender {
for(UITextField *textField in fields) {
// whatever you have to do
}
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
// you have as many rows as textfields
return [fields count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
// Set up the cell...
// For row N, you add the textfield N to the array.
[cell addSubview:(UITextField *)[fields objectAtIndex:indexPath.row]];
}
UPDATE FOR SWIFT 4
Instead of reloading the whole table you can use beginUpdate and endUpdate here.
Add target to the cell button(You can use view tag or create new TableviewCell class).
cell.addBtn.tag = indexPath.row
cell.addBtn.addTarget(self, action: #selector(self.addTextField(_:)), for: UIControlEvents.touchUpInside)
cell.txtField.tag = indexPath.row
Then implement this method:
#objc func addTextField(_ sender:UIButton) {
let indexPath = IndexPath(row: sender.tag, section: 0)
if let cell = tblView.cellForRow(at: indexPath) as? TableCell {
tblArray.append(cell.txtField.text!)
}
let newRow = IndexPath(row: sender.tag + 1, section: 0)
tblView.beginUpdates()
tblView.insertRows(at: [newRow], with: .left)
tblView.endUpdates()
}
Do not forget to put var tblArray:[Any] = [""] at start.
Hope this anyone who is looking for Swift answer.
Happy coding.