Get row number of UITableView in IOS

Question

In my code I have a table view with many sections sorted alphabetically. I have checkboxes(UIButton) in table rows and I need check them according to respective status entered in row. I had done

checkbutton.tag = indexpath.row;

but when table scrolls and section get changed and I get status of previous section in my checkbox method. anyone please help me on this.

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
   CheckButton = [UIButton buttonWithType:UIButtonTypeCustom];
   [CheckButton addTarget:self action:@selector(CheckBoxAction:)      forControlEvents:UIControlEventTouchUpInside];
   CheckButton.tag=indexPath.row;
   //some other stuff
   [cell.contentView addSubview:CheckButton];
}

and this my CheckBoxAction

-(void)CheckBoxAction:(UIButton *)btn
{
    tag = btn.tag;
    NSDictionary *tagdict =[statusArray objectAtIndex:tag]; 
}

Now, problem is that indexpath.row is 0 whenever section is changed, so I can't able to access exact row number in my CheckBoxAction.

Why are you creating checkbox buttons in that event, and not in getCellForRowAtIndex or interface builder? — Rob van der Veer, Jul 19 '13 at 10:22

ChandreshKanetiya · Accepted Answer · 2014-03-13T06:13:26.533

use this for getting current row you tap.

 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
 CheckButton = [[UIButton alloc] init];

[CheckButton addTarget:self action:@selector(CheckBoxAction:)     forControlEvents:UIControlEventTouchUpInside];
CheckButton.tag=indexPath.row;
[cell addSubview:CheckButton];
}


-(void)CheckBoxAction:(id)sender
{
  // Cast Sender to UIButton
UIButton *button = (UIButton *)sender;

// Find Point in Superview
CGPoint pointInSuperview = [button.superview convertPoint:button.center toView:self.tableView];

// Infer Index Path
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:pointInSuperview];

// Log to Console
NSLog(@"selected Row : %d", indexPath.row);
}

score 1 · Answer 2 · edited May 23 '17 at 12:30

1

// Try this

CheckButton.tag = [[NSString stringWithFormat:@"%d%d",indexPath.section,indexPath.row] integerValue];

or

// try this below link to get logic for, how to handle checkbox in UITableView

Set checkmark in UITableView

edited May 23 '17 at 12:30

Community

1
1

answered Jul 19 '13 at 10:15

Lokesh Chowdary

816
5
22

This will get mess up when section are more than 9 and rows are more than 9 under sections. – βhargavḯ Jul 19 '13 at 10:15

score 0 · Answer 3 · answered Jul 19 '13 at 10:18

0

What you are doing is wrong in many ways. So, I am not going to give you a solution for the exact problem you have, but more of a guideline:

First you are adding the checkbox directly to the cell, which means you are possible adding multiple CheckButton to the same cell, if you scroll your UITableView a few times.
Add the checkButton on the cell directly instead of keep adding it in the cellForRowAtIndexPath, this can give you a performance boost.
Use a block that will be executed when a user clicks the button. This way you are able to capture the context of your UIViewController. You should assign that block to the cell on cellForRowAtIndexPath

answered Jul 19 '13 at 10:18

Rui Peres

25,741
9
87
137

can you please explain how to Add the checkButton on the cell directly instead of keep adding it in the cellForRowAtIndexPath – Vikas Jul 19 '13 at 10:28
You can either add in `awakeFromNib` inside your Cell. Or, if you don't have a NIB, you can add it init method of your cell. But again, this is not a concrete answer to your question, just more a guideline. – Rui Peres Jul 19 '13 at 10:32
sir i can't understand.can you provide some link,tutorial or any type of help to add the checkButton on the cell directly – Vikas Jul 19 '13 at 10:37

Get row number of UITableView in IOS

3 Answers3