UISwitch in a tableview cell...

[rashdan]

I've a Switch in a table cell and I want to disable selection on that cell. The problem is that if I do cell.userInteractionEnabled=NO; then it doesn't let me select the Switch, it disables the Switch as well.
And second problem is how can I disable cell highlight. I mean , now when a cell is selected the background of the cell disappears. How can I keep the cell background not to change. Here's wht I'm doing

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
	NSString *MyIdentifier = @"mainMenuIdentifier";
	UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];
	if (cell == nil) {
		cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:MyIdentifier] autorelease];
		[cell setSelectedBackgroundView:[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"highlightstrip.png"]]];
        
            UILabel *filterLbl = [[UILabel alloc] initWithFrame:CGRectMake(15, 5, 170,20)];
            [filterLbl setFont:[UIFont boldSystemFontOfSize:14.0]];
            [filterLbl setTag:30];
            [filterLbl setBackgroundColor:[UIColor whiteColor]];
            [cell.contentView addSubview:filterLbl];
            [filterLbl release];
            
			if ([[[[collection filterMainList ] objectAtIndex:indexPath.row]  filterItemType] isEqualToString:@"bool"] ) {
				
				UISwitch *mySwitch = [[[UISwitch alloc] initWithFrame:CGRectZero] autorelease];
				[cell.contentView addSubview:mySwitch];
				cell.userInteractionEnabled = NO;
				cell.accessoryView = mySwitch;
				mySwitch.tag = indexPath.row;
				[mySwitch addTarget:self action:@selector(switchToggled:) forControlEvents: UIControlEventTouchUpInside];
				[mySwitch release]; 
 			}

	}


        [(UILabel *) [cell viewWithTag:30] setText:[[[collection filterMainList ] objectAtIndex:indexPath.row] filterName]];
        
		cell.backgroundColor = [UIColor whiteColor];
		cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
	}
	return cell;
}

Please, tell me how can I resolve both my issues.

[taylortm]

Well, for the first problem, you should use the TableView delegate function

willSelectRowAtIndexPath

and you can use logic to determine the state of your UISwitch for the for the row in question. Based on the switch's status, you can basically disallow the selection of the row in question using this optional delegate method. If you determine you DO NOT want to allow the cell to be selected, you should have willSelectRowAtIndexPath return nil. Otherwise, just return the parameter indexPath.


I haven't dealt with your second problem. I can think about it and take a shot. But I bet you'll find somebody with direct experience on here to help you with that.

Good luck!

[rashdan]

Originally Posted by taylortm

Well, for the first problem, you should use the TableView delegate function

willSelectRowAtIndexPath

and you can use logic to determine the state of your UISwitch for the for the row in question. Based on the switch's status, you can basically disallow the selection of the row in question using this optional delegate method. If you determine you DO NOT want to allow the cell to be selected, you should have willSelectRowAtIndexPath return nil. Otherwise, just return the parameter indexPath.


I haven't dealt with your second problem. I can think about it and take a shot. But I bet you'll find somebody with direct experience on here to help you with that.

Good luck!

Thanks for the reply, but what I don't understand is, if the Switch is off and I disable the selection, how can I turn the Switch ON if the row selection is disabled. Please, can you provide little code help or something, being new to Obj-C , I didn't totally get what you wrote.

[taylortm]

Sorry, I hadn't visited this thread for a while. I'm doubting you still have this problem since it's been 2.5 months!

But, just in case you still care...

Originally Posted by rashdan

if the Switch is off and I disable the selection, how can I turn the Switch ON if the row selection is disabled.

I should have been more clear: DON'T disable selection via cell.userInteractionEnabled = NO. As you are observing, that turns off the whole cell, including the switch.

So, I'm on a PC at the office and don't have easy access to documentation/code. But, just like you define

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

you can also define

- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath

within that (optional delegate) method, you check the value of your switch and decide whether the switch is ON or OFF and either return indexPath or nil.

[maricello]

for your first problem:
I think what your looking for is:

tableView.allowsSelection = NO;

that way the user can't select anything but switches and textViews and anything you put in your TableViewCell should work perfectly normal.
Of course if you need to have only one particular cell to not be selectable, the above proposition with "willSelectRowAtIndexPath:" would be your way to go I think.
greetings!

edit: whow, I just saw how old the thread is. sorry for bringing it up again..