Insert row in UiTableView does not update rest cell’s indexPath? - objective-c

Question

Say i’m loading UITableview with each UITextView inside each cell as subview.And i’ve assigned indexPath.row as tags for each textview.
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"userDetails";
UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
UITextView *textView=[[UITextView alloc]initWithFrame:CGRectMake(0, 0, self.frame.size.width, 60)];
NSString * myString = [contentArray1 objectAtIndex:indexPath.row];
textView.text= myString;
UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc]
[tapRecognizer setNumberOfTouchesRequired:1];
[tapRecognizer setDelegate:self];
textView.userInteractionEnabled = YES;
textView.tag = indexPath.row;//assign tags to textview
[textView addGestureRecognizer:tapRecognizer];
[cell addSubview:textView];
return cell;
}
Below method gets called once the user taps on any textview.I’m seeing proper tag values printed when i tap on any textviews.
-(void) action:(id)sender
{
//NSLog(#"TESTING TAP");
UITapGestureRecognizer *tapRecognizer = (UITapGestureRecognizer *)sender;
NSLog (#"%d",[tapRecognizer.view tag]);
}
Now i would like to insert row in my tableview,say at index 3.
What i did is simple,
[contentArray1 insertObject:[NSString stringWithFormat:#"added cell”] atIndex:3];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:3 inSection:0];
[self.tableView insertRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
Now when i try to tap on any textviews after the inserted cell,i’m able to see the old tag values.Meaning,after row gets inserted to tableview at index=3,when i tap on textview i can see tag=2,then again when i tap on next cell’s textview i can see tag=2,it should be 3.
My question is,once we insert any row/cell in tableview,the tableview will not refresh other cell tags/index?….
I can fix it by calling reloadVisibleCells method.But i’m looking out for better solution.I don’t want to refresh whole screen just for inserting a row.Any solutions would be greatly appreciated.

Answer 1

Try to do it like this:
[self.tableView beginUpdates];
[self.tableView insertRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
[self.tableView endUpdates];

Answer 2

Your problem is that inserting/deleting rows doesn't cause reloading of other rows, and this is the expected and correct behavior. However, since -tableView:cellForRowAtIndexPath: is not called for those other rows, they are still configured with old (now obsolete) tags.
You can fix it in a number of ways (off the top of my head):
subclass UITableViewCell and store the represented object itself as its property (instead of the object's index)
associate the object with the UITableViewCell with objc_setAssociatedObject()
use -[UITableView indexPathForCell:] instead of tags to figure out a cell's real index path.