Databases
StackOverflow2013
Postsdbo
PODetecting which UIButton was pressed in a UITableView
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PODetecting which UIButton was pressed in a UITableView
    primarykey
    data
    text
    <p>I have a <code>UITableView</code> with 5 <code>UITableViewCells</code>. Each cell contains a <code>UIButton</code> which is set up as follows:</p> <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { NSString *identifier = @"identifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier]; if (cell == nil) { cell = [[UITableView alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier]; [cell autorelelase]; UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(10, 5, 40, 20)]; [button addTarget:self action:@selector(buttonPressedAction:) forControlEvents:UIControlEventTouchUpInside]; [button setTag:1]; [cell.contentView addSubview:button]; [button release]; } UIButton *button = (UIButton *)[cell viewWithTag:1]; [button setTitle:@"Edit" forState:UIControlStateNormal]; return cell; } </code></pre> <p>My question is this: in the <code>buttonPressedAction:</code> method, how do I know which button has been pressed. I've considered using tags but I'm not sure this is the best route. I'd like to be able to somehow tag the <code>indexPath</code> onto the control.</p> <pre><code>- (void)buttonPressedAction:(id)sender { UIButton *button = (UIButton *)sender; // how do I know which button sent this message? // processing button press for this row requires an indexPath. } </code></pre> <p>What's the standard way of doing this?</p> <p><strong>Edit:</strong></p> <p>I've kinda solved it by doing the following. I would still like to have an opinion whether this is the standard way of doing it or is there a better way?</p> <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { NSString *identifier = @"identifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier]; if (cell == nil) { cell = [[UITableView alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier]; [cell autorelelase]; UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(10, 5, 40, 20)]; [button addTarget:self action:@selector(buttonPressedAction:) forControlEvents:UIControlEventTouchUpInside]; [cell.contentView addSubview:button]; [button release]; } UIButton *button = (UIButton *)[cell.contentView.subviews objectAtIndex:0]; [button setTag:indexPath.row]; [button setTitle:@"Edit" forState:UIControlStateNormal]; return cell; } - (void)buttonPressedAction:(id)sender { UIButton *button = (UIButton *)sender; int row = button.tag; } </code></pre> <p>What's important to note is that I can't set the tag in the creation of the cell since the cell might be dequeued instead. It feels very dirty. There must be a better way.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USParas Joshi
    1. USrein
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    3. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. PODetecting which UIButton was pressed in a UITableView
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PODetecting which UIButton was pressed in a UITableView
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PODetecting which UIButton was pressed in a UITableView
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload