I have to create custom UITableView
and generally cell has UIImageView
, and two UILabel
when image of UIImageView
is depend upon content which i got from server. so some cell has image and some has no image.
Problem is that when i use reusability of cell then previous UIImageView's
image remain as it.. how can i remove it and implement my content on cell proper way.
Following is mine code.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *isImgOfTable = [[self.listOfEvents objectAtIndex:indexPath.row] objectForKey:@"EventImage"];
NSString *CellIdentifier = @"Cell";
//NSString *CellIdentifier = [NSString stringWithFormat:@"S%1dR%1d", indexPath.section, indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell == nil)
{
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
if([isImgOfTable length] > 0)
{
UIImageView *imgOfEvent = [[UIImageView alloc] init];
imgOfEvent.tag = 101;
[cell.contentView addSubview: imgOfEvent];
}
UILabel *lblEventTitle = [[UILabel alloc] init];
lblEventTitle.tag = 102;
[cell.contentView addSubview:lblEventTitle];
UILabel *lblDescription = [[UILabel alloc] init];
lblDescription.tag = 103;
[cell.contentView addSubview:lblDescription];
}
if([isImgOfTable length] > 0)
{
NSString *newPath = @"";
UIImageView *imgEvent = (UIImageView *) [cell.contentView viewWithTag:101];
imgEvent.userInteractionEnabled = YES;
newPath = [[GeneralClass getDocumentDirectory] stringByAppendingPathComponent:[[self.listOfEvents objectAtIndex:indexPath.row] objectForKey:@"EventImage"]];
imgEvent.frame = CGRectMake(mainX, 4, 45, 45);
imgEvent.backgroundColor = [UIColor colorWithRed:(187/255.f) green:(226/255.f) blue:(255/255.f) alpha:1.0f];
imgEvent.layer.cornerRadius = 7;
imgEvent.layer.borderColor = [UIColor colorWithRed:(224/255.f) green:(224/255.f) blue:(224/255.f) alpha:1.0f].CGColor;
imgEvent.layer.borderWidth = 1;
imgEvent.clipsToBounds = YES;
imgEvent.image = [UIImage imageWithContentsOfFile:newPath];
}
UILabel *lblEventTitle = (UILabel*) [cell.contentView viewWithTag:102];
.
.
// Code of UILabel *lblEventTitle
UILabel *lblEventDescription = (UILabel*) [cell.contentView viewWithTag:103];
.
.
// Code of UILabel *lblEventDescription
return cell;
}
NOTE: I must want to use reusability of cell. I dont want to fix such like
NSString *CellIdentifier = [NSString stringWithFormat:@"S%1dR%1d", indexPath.section, indexPath.row];
And also i am not used UITableViewCell class so may be it is not possible to call/override prepareForReuse Please give me you suggestion.
Check this code it help full to you.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *isImgOfTable = [[self.listOfEvents objectAtIndex:indexPath.row] objectForKey:@"EventImage"];
NSString *CellIdentifier = @"Cell";
//NSString *CellIdentifier = [NSString stringWithFormat:@"S%1dR%1d", indexPath.section, indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell == nil)
{
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
UIImageView *imgOfEvent = [[UIImageView alloc] init];
imgOfEvent.tag = 101;
[cell.contentView addSubview: imgOfEvent];
UILabel *lblEventTitle = [[UILabel alloc] init];
lblEventTitle.tag = 102;
[cell.contentView addSubview:lblEventTitle];
UILabel *lblDescription = [[UILabel alloc] init];
lblDescription.tag = 103;
[cell.contentView addSubview:lblDescription];
}
UIImageView *imgEvent = (UIImageView *) [cell.contentView viewWithTag:101];
imgEvent.hidden=YES;
if([isImgOfTable length] > 0)
{
NSString *newPath = @"";
imgEvent.hidden=NO;
imgEvent.userInteractionEnabled = YES;
newPath = [[GeneralClass getDocumentDirectory] stringByAppendingPathComponent:[[self.listOfEvents objectAtIndex:indexPath.row] objectForKey:@"EventImage"]];
imgEvent.frame = CGRectMake(mainX, 4, 45, 45);
imgEvent.backgroundColor = [UIColor colorWithRed:(187/255.f) green:(226/255.f) blue:(255/255.f) alpha:1.0f];
imgEvent.layer.cornerRadius = 7;
imgEvent.layer.borderColor = [UIColor colorWithRed:(224/255.f) green:(224/255.f) blue:(224/255.f) alpha:1.0f].CGColor;
imgEvent.layer.borderWidth = 1;
imgEvent.clipsToBounds = YES;
imgEvent.image = [UIImage imageWithContentsOfFile:newPath];
}
UILabel *lblEventTitle = (UILabel*) [cell.contentView viewWithTag:102];
.
.
// Code of UILabel *lblEventTitle
UILabel *lblEventDescription = (UILabel*) [cell.contentView viewWithTag:103];
.
.
// Code of UILabel *lblEventDescription
return cell;
}
Might i suggest subclassing UITableViewCell and using prepareForReuse
-(void)prepareForReuse
{
labelOne = @"Default text 1";
labelTwo = @"Default label 2";
[imageView setImage:nil]; //Or you could set a default image?
}
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