AutoScrolling in Tableviewcell

Question

-(IBAction)_clickautoscroll:(id)sender
{
    NSTimer *autoscrollTimer;
    if (autoscrollTimer == nil) { 
        autoscrollTimer = [NSTimer scheduledTimerWithTimeInterval:(55.0/1000.0) 
                                                           target:self 
                                                         selector:@selector(autoscrollTimerFired:)  
                                                         userInfo:nil  
                                                          repeats:YES]; 
    }
}
- (void)autoscrollTimerFired:(NSTimer*)timer { 
    CGPoint scrollPoint = self.table.contentOffset; 
    scrollPoint = CGPointMake(scrollPoint.x, scrollPoint.y + 1); 
    [self.table setContentOffset:scrollPoint animated:NO]; 
}

i have this code for autoscrolling of tableviewcell,when i click this button it starts scrolling automatically,but i want to stop this in the another button click.How to stop the above autoscrolling in a button click. TRhanks in advance.

score 3 · Accepted Answer · answered Jan 14 '12 at 06:36

3

Save the reference autoscrollTimer, and then use NSTimer's invalidate method to kill the timer. Or, alternately, as suggested, use scrollToRowAtIndexPath:atScrollPosition: instead.

answered Jan 14 '12 at 06:36

Mustafa

20,504
42
146
209

i implement the Invlidate method in another button click to stop the autoscroll,it works fine,but after that i click the autoscroll button it is not working. – stackiphone Jan 14 '12 at 06:59
That's because invalidate doesn't `nil` the timer. And you're code initializes and restarts the timer IF it's nil. So, go ahead an nil the timer (when it's invalidated) as well, or change your `_clickautoscroll` method appropriately. – Mustafa Jan 15 '12 at 13:39

score 2 · Answer 2 · answered Jan 14 '12 at 06:36

2

Try using scrollToRowAtIndexPath:atScrollPosition: instead:

[self.table scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:toRow inSection:someSection] 
                  atScrollPosition:UITableViewScrollPositionBottom animated:YES];

Here, you can scroll to the next row by doing something like toRow + 1, and maybe somewhere in there throw in an increment statement.

answered Jan 14 '12 at 06:36

WrightsCS

50,551
22
134
186

sir,what is torow and some section? – stackiphone Jan 14 '12 at 07:00
**`toRow`** is the row you want to scroll to. **`inSection`** is the section that `toRow` is in. – WrightsCS Jan 14 '12 at 10:02

AutoScrolling in Tableviewcell

2 Answers2