CODEWITHSUNDEEP
objective-cuitableviewuibutton
user4223732
user4223732

Reputation:

Xcode Label of selected Cell

i want to start a timer label in a custom cell, when the button in the cell was pressed. How can i display that label in the selected cell? I used tag to connect the label to my table view. Thanks

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

NSString *CellIdentifier;

CellIdentifier = @"Cell01";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

// Configure the cell...
if (cell == nil)
{
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}

// Button
Button = (UIButton *)[cell viewWithTag:104];
[Button addTarget:self action:@selector(ButtonClicked:) forControlEvents:UIControlEventTouchUpInside];

theLabel = (UILabel *)[cell viewWithTag:105];

return cell; }

And here is the button action

-(void)ButtonClicked:(id)sender {

UITableViewCell *clickedCell = (UITableViewCell *)[[sender superview] superview];
NSIndexPath *clickedButtonPath = [self.TableView indexPathForCell:clickedCell];
NSInteger ClickedRow = clickedButtonPath.row;
// In the clickedButtonPath, this allow us to find out the row that was selected by the user.

NSLog(@"%@",clickedCell);

switch(ClickedRow)
{
    case 1:
    {
        // first row
    }
        break;

    case 2:
    {
        // second row
    }
        break;
}}

Upvotes: 1

Views: 442

Answers (1)

Onik IV
Onik IV

Reputation: 5047

The first mistake is you are not created a custom cell, the cell you creating does´t have view 104 and 105. More in code: 

 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

// this 1.-
NSString *CellIdentifier;

 CellIdentifier = @"Cell01";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

 // Configure the cell...

 // Here you create a new UITableViewCell.


if (cell == nil)
 {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
  }
 // this 2.
 // Button
 Button = (UIButton *)[cell viewWithTag:104];

 // This is nil. You can add
 NSLog(@"See this button %@",[Button description]);
 // And see nil in the console.

 [Button addTarget:self action:@selector(ButtonClicked:)      forControlEvents:UIControlEventTouchUpInside];

 // The same thing this label
theLabel = (UILabel *)[cell viewWithTag:105];



return cell; }

If you are using Storyboards(or interface builder), in the cell in stroryboard be sure the reuseIdentifier is Cell01, and change al code between: this 1.- and this 2.- by:

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell01" forIndexPath:indexPath];

The last step will be: 1.- In Storyboard or in code quit the default select behavior, in code you must add this just above the cell created.

 cell.selectionStyle = UITableViewCellSelectionStyleNone;

2.- Add didSelect and undo:

 -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
UILabel *theLabel = (UILabel *)[selectedCell viewWithTag:105];
theLabel.text = @"New Selected text";
 }

 -(void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
UILabel *theLabel = (UILabel *)[selectedCell viewWithTag:105];
theLabel.text = @"Non Selected text";

}

Upvotes: 1

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