Unknown bug when implementing a action to UITableView
<p>I have an reader application which have a night mode view,that is if the user tap the  UISwitch button to on it turns out the background of the tableview ,text label.text and a label called chapetrandverse to black every thing works perfect,but the bug is when i tap the UIswitch to on ,the background doesn't changes first ,we have to scroll the tableview to activate this effect.there is a black image in the background f the tableview .my code is</p>

<pre><code>    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{

        static NSString *CellIdentifier = @"Cell";

        readCell *cell = (readCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
        if (cell == nil) 
        {
            NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"readCell" owner:self options:nil]; 
            cell = [nib objectAtIndex:0]; 

            if (imagedarkbackground.hidden == NO) 
            {

                  cell.chapterAndVerse.backgroundColor= [UIColor clearColor];
                  cell.chapterAndVerse.textColor = [UIColor whiteColor];
                  cell.textLabel.textColor = [UIColor whiteColor];
                  cell.textLabel.highlightedTextColor = [UIColor whiteColor];
                  //cell.textLabel.font = [UIFont fontWithName:@"Georgia" size:16];
            }
            else if (imagedarkbackground.hidden == YES)
            {
                  cell.chapterAndVerse.backgroundColor= [UIColor whiteColor];
                  cell.chapterAndVerse.textColor = [UIColor brownColor];
                  cell.textLabel.textColor = [UIColor darkGrayColor];
                  cell.textLabel.highlightedTextColor = [UIColor darkGrayColor];
            }
</code></pre>

<p>Is there any issue in my code?why i want to scroll to change the lowlight effect? .
thanks in advance.</p>
