UITableview cell selection control

[rk_mail04]

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    
  static NSString *CellIdentifier = @"Cell";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
	{   
        cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
		[[cell imageView] setImage:[UIImage imageNamed:@"Tick.png"]];
		
    }
	
    [[cell imageView] setHidden:YES];
	
	if (indexPath.row == selectedRow) 
	{
		
		[[cell imageView] setHidden:NO];
	}
	
	NSString *cellValue =[listOfItems objectAtIndex:indexPath.row];
	cell.text = cellValue;
	return cell;


}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    	// Set up the cell...
	 selectedRow = indexPath.row;
	[self.tableView reloadData];
	
	
}
viewDidLoad
selectedRow =-1

My question about UITableView cell selection for navigation base application . After selecting my cell i am indicating in check mark for cell left side is selected. When its return to FirstviewController and back to UITableView if i check row there is no selection cell check mark. what happening now . Because i am already selected my cell. how to make selected cell is selected in appdelegate

[TUX2K]

Wel your table is reloaded and the cell is setup for you datasource.
Since your datasource does not know that it is selected it will load the cell not selected.
You will need to save the selected state in the datasource as well.

ps your datasource = listOfItems, which just holds string.
You will have to change this to some kind of object that can hold a Boolean and a string.

[dany_dev]

basically the same question
http://www.iphonedevsdk.com/forum/ip...selection.html

[rk_mail04]

post of tutorial link or app delegate for reload. because i am totally confusing about reload and app delegate .i am not able to understand how it is internally working.

Originally Posted by TUX2K

Wel your table is reloaded and the cell is setup for you datasource.
Since your datasource does not know that it is selected it will load the cell not selected.
You will need to save the selected state in the datasource as well.

ps your datasource = listOfItems, which just holds string.
You will have to change this to some kind of object that can hold a Boolean and a string.

[RLScott]

Originally Posted by rk_mail04

post of tutorial link or app delegate for reload. because i am totally confusing about reload and app delegate .i am not able to understand how it is internally working.

The essential difficulty for many in understanding tables is that the whole framework of tables has been designed around the idea of "just in time" cell construction to save memory and time. Stop thinking of a cell as a permanent object with characteristics that you can set once and forget. A cell needs to be thought of as a very temporary item that is taken apart and forgotten as soon as it scrolls off the screen and rebuilt whenever it comes back into view. That is why the datasource and delegate is so important. The datasource must be the real permanent storage for anything about the cell that needs to be re-created when the cell comes into view. And reloadData is what you do to tell the framework that the datasource has changed, and all currently-visible cells must be regenerated from the datasource so the visible cells will reflect that change.

[rk_mail04]

Thanks .

Originally Posted by RLScott

The essential difficulty for many in understanding tables is that the whole framework of tables has been designed around the idea of "just in time" cell construction to save memory and time. Stop thinking of a cell as a permanent object with characteristics that you can set once and forget. A cell needs to be thought of as a very temporary item that is taken apart and forgotten as soon as it scrolls off the screen and rebuilt whenever it comes back into view. That is why the datasource and delegate is so important. The datasource must be the real permanent storage for anything about the cell that needs to be re-created when the cell comes into view. And reloadData is what you do to tell the framework that the datasource has changed, and all currently-visible cells must be regenerated from the datasource so the visible cells will reflect that change.