Question

i’m having a problem with uitableview when i scroll it up and down many times it becomes sticky and all the containing view becomes sticky too.

here is my code:

- (UITableViewCell *)tableView:(UITableView *)tableView 
         cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle 
                                      reuseIdentifier:CellIdentifier] ;
    }

    cell.textLabel.text=[NSString stringWithFormat:@"         %@",
                            [SongsNames objectAtIndex:indexPath.row]];

    UIImageView *b=[[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 35, 34)];
    b.image=[UIImage imageNamed:@"playbuttone.png"];
    [cell.contentView addSubview:b];
    [b release];
    UIButton *b2=[[UIButton alloc] initWithFrame:CGRectMake(260, 0, 50, 35)];
    [b2 setImage:[UIImage imageNamed:@"buye.png"] forState:UIControlStateNormal];
    [cell.contentView addSubview:b2];
    [b2 release];

    cell.textLabel.textColor=[UIColor colorWithWhite:1 alpha:1];
}

after update:

cell.textLabel.text=[NSString stringWithFormat:@"         %@",[SongsNames objectAtIndex:indexPath.row]];

        [cell.contentView addSubview:b];
       // [b release];
        [cell.contentView addSubview:b2];
        //[b2 release];

        cell.textLabel.textColor=[UIColor colorWithWhite:1 alpha:1];

and in the viewdidload:

- (void)viewDidLoad{

b=[[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 35, 34)];
b.image=[UIImage imageNamed:@"playbuttone.png"];

b2=[[UIButton alloc] initWithFrame:CGRectMake(260, 0, 50, 35)];
[b2 setImage:[UIImage imageNamed:@"buye.png"] forState:UIControlStateNormal];

}

Answer 1

You are reloading your images for each call of that function. When scrolling this function gets called really a lot of times which is not neccessary, in particular because your images are static and identical for each cell.

Load the two images once when the view did load, save a reference in the view controller and reuse them. When the table view requests the cell. This very likely will solve your problem.