iphone - UITableView crashing on scroll

Question

This is the code i have:

- (id)init
{
    self = [super initWithStyle:UITableViewStylePlain];
    if (self) {
        //self.tableView.delegate = self;
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    UIColor *wood = [UIColor colorWithPatternImage:[UIImage imageNamed:@"wood_pattern.png"]];
    self.view.backgroundColor = wood;
    self.tableView.separatorColor = [UIColor clearColor];
}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return 3;
}

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

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
        cell.backgroundView.backgroundColor = [UIColor redColor];
    }

    // Configure the cell...

    cell.textLabel.text = @"Test";

    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;

    return cell;
}

#pragma mark - Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{

}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    return 60;
}

When i scroll down and then back up to a cell which was previously on screen, the app crashes. Any ideas why?

On a side note.. the background color is set to red, and although i can see the text, I can't see the background color.

Answer 1

Bind UITableView properly in XIB. and right following code.

- (void)viewDidLoad {
    [super viewDidLoad];

    self.tableView.separatorColor = [UIColor clearColor];
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return 3;
}

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

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

    }
    cell.contentView.backgroundColor = [UIColor redColor];
    cell.textLabel.text = @"Test";
    cell.textLabel.backgroundColor = [UIColor clearColor];
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;

    // Configure the cell.

    return cell;
}