UITableViewCell在滚动时一次又一次分配

Question

如果在滚动时分配了UITableViewCell，则不应该重新分配UITableViewCell。但是。我怎样才能防止这种情况发生？

Answer 1

如果你想重用细胞，然后在的cellForRowAtIndexPath代码一样，

static NSString *CellIdentifier = @"Cell"; 
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 


    if (cell == nil) 
    { 
    CGRect CellFrame; 

     CGRect nameLabelFrame; 

     CGRect countLabelFrame; 

     CellFrame = CGRectMake(0, 0, 320, 80); 

     nameLabelFrame = CGRectMake(10, 10, 270, 50); 
     countLabelFrame = CGRectMake(10, 58, 270, 12); 


     cell = [[[UITableViewCell alloc] initWithFrame:CellFrame reuseIdentifier:CellIdentifier] autorelease]; 
     UILabel *lblTemp; 
     //UIImageView *imgTemp; 

     lblTemp = [[UILabel alloc] initWithFrame:nameLabelFrame]; 
     lblTemp.tag = 1; 
     [cell.contentView addSubview:lblTemp]; 
     [lblTemp release]; 



     lblTemp = [[UILabel alloc] initWithFrame:countLabelFrame]; 
     lblTemp.tag = 3; 
     [cell.contentView addSubview:lblTemp]; 
     [lblTemp release]; 

} 

//And outside of if condition access these labels by this 

    //UIConstruction 
     UILabel *nameLabel = (UILabel *)[cell viewWithTag:1]; 

     UILabel *countLabel = (UILabel *)[cell viewWithTag:3]; 

一些事情，并使用这些标签或控制你想要超出这个东西如果条件