Swift - Uitableview Didselectrowatindexpath & Diddeselectrowatindexpath Add & Remove Indexpath Ids

Swift - UITableView didSelectRowAtIndexPath & didDeselectRowAtIndexPath Add & Remove indexPath IDs

You could do this pretty simply by adding a Dictionary property to your table view controller:

class ViewController : UITableViewController {
    var selectedItems: [String: Bool] = [:]

    // ...

    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        let selectedItem = items.objectAtIndex(indexPath.row) as String
        let itemId = selectedItem.componentsSeparatedByString("$%^")
        // add to self.selectedItems
        selectedItems[itemId[1]] = true
    }

    func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath) {
        let selectedItem = items.objectAtIndex(indexPath.row) as String
        let itemId = selectedItem.componentsSeparatedByString("$%^")
        // remove from self.selectedItems
        selectedItems[itemId[1]] = nil
    }

    // can access the items as self.selectedItems.keys
    func doSomething() {
        for item in selectedItems.keys {
            println(item)
        }
    }
}

Select and Deselect UITableView Rows

you can add a flag - hasSelected in CategoryDB

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
if tableView == categoryTable
    {
        categoryList = categoryData[indexPath.row] as! CategoryDB

        categoryList!.hasSelected = true

        refreshLabel()
    }

}

func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath) {
if tableView == categoryTable
    {
        categoryList = categoryData[indexPath.row] as! CategoryDB

        categoryList!.hasSelected = false

        refreshLabel()
    }

}

func refreshLabel(){
     var label = ""
     for object in categoryData as! CategoryDB {
        if(object.hasSelected){
            label += "\(categoryList!.category), "
        }
     }
     categoryLabel.text! = label

}

UITableView - How to delete file while deleting cell?

Actually what you are doing you are removing the value from array at the top. You have to remove the value from array at the end of this function. As i have done in below code, please check my answer and use this code and then tell me if you face any issue. I Update my answer Please check it again.

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if ( editingStyle== UITableViewCellEditingStyleDelete) {

    currentcsvfile = [self.dirList objectAtIndex:indexPath.row];

    csvfilenameSave = [NSString stringWithFormat:currentcsvfile];

    NSString *docPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0];

    NSString *filePath = [docPath stringByAppendingPathComponent:csvfilenameSave];
    NSError *error = nil;
   [[NSFileManager defaultManager] removeItemAtPath:filePath error:&error];

   [_dirList removeObjectAtIndex:indexPath.row];

    [self.data beginUpdates];

    [self.data deleteRowsAtIndexPaths:[NSMutableArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
    [self.data endUpdates];

    [data setEditing:NO animated:YES];

    }
}

How to show a UITableViewCell as selected and still receive didDeselectRowAtIndexPath

Try to use these codes.

   - (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
     if (tableView.isEditing) { 
          [cell setSelected:[self isCellFave:indexPath]]; 
          [cell  addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(unselectRow:)]];
          }
      }
    }

Then add a tap gesture handler

- (void)unselectRow:(UITapGestureRecognizer *)sender {
    UITableViewCell *cell  = (UITableViewCell *)     sender.view;
    cell.selected = NO;
}

Swift UITableView didSelectRowAtIndexPath not getting called

You have to set an @IBOutlet to the tableView in you ViewController and set as it's delegate and dataSource to you can see the data an respond to changes in the tableView.

Something like this :

override func viewDidLoad() {
    super.viewDidLoad()

    self.tableView.delegate = self
    self.tableView.dataSource = self
}

And implements the UITableViewDataSource protocol too.

Or you can too in the Interface Builder set the ViewController as it's delegate and dataSource (more easy to do I think) and avoid to set manually in code like above. Is up to you.

I hope this help you.

UITableViewCell checkmark to be toggled on and off when tapped

Swift > 3.0

func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
    if let cell = tableView.cellForRow(at: indexPath) {
        cell.accessoryType = .none
    }
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    if let cell = tableView.cellForRow(at: indexPath) {
        cell.accessoryType = .checkmark

    }
}

I solved by using two Swift functions: the didSelectRowAtIndexPath and the didDeselectRowAtIndexPath.

override func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath) {
    if let cell = tableView.cellForRowAtIndexPath(indexPath) {
        cell.accessoryType = .None
    }
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    if let cell = tableView.cellForRowAtIndexPath(indexPath) {
        cell.accessoryType = .Checkmark

    }
}

To make this work properly, add a line of code to your cellForRowAtIndexPath function to select a row when the table view is drawn on the screen, otherwise the didDeselectRowAtIndexPath will not be called the first time you select another row. Like so:

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("cellData", forIndexPath: indexPath) 
    if (some condition to initially checkmark a row)
        cell.accessoryType = .Checkmark
        tableView.selectRowAtIndexPath(indexPath, animated: false, scrollPosition: UITableViewScrollPosition.Bottom)
    } else {
        cell.accessoryType = .None
    }

    return cell
}

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