Dynamically add objects to UITableView cell - ios

Question

![enter image description here][2]I have a table view,in which I am using my custom cell that contains user's profile picture,status label, time stamp label, username label, no of comments label and a comment button.
When no of comments i.e"4 comments" is tapped, I ha ve to show comments in the corresponding cell along with username, user profile picture etc below the original post.
How do I dynamically add these objects into cell when the app is running? or there is some else solution please tell. table for 2 posts is shown in right of image. Tapping no of comments left of the image should be shown.
Here is the code for table cell:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"MyCell";
TableCell *cell = (TableCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
NSArray* topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"TableCell" owner:self options:nil];
for (id currentObject in topLevelObjects) {
if ([currentObject isKindOfClass:[UITableViewCell class]]) {
cell = (TableCell *)currentObject;
break;
}
}
}
// Configure the cell.
User *user = [postTableData objectAtIndex:indexPath.row];
NSLog(#"pic:%#",user.profilePictureURL);
cell.profilePicture.image = [UIImage imageNamed:#"avatar.png"];
cell.profilePicture.layer.cornerRadius = cell.profilePicture.frame.size.height /2;
cell.profilePicture.layer.masksToBounds = YES;
cell.profilePicture.layer.borderWidth = 0;
cell.userName.text = user.name;
cell.status.text = user.status;
cell.dateForStatus.text = user.datePosted;
[cell.countComments setTitle:user.countOfComments forState:UIControlStateNormal];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
[cell.contentView.layer setBorderWidth:6.0f];
[cell.contentView.layer setBorderColor:[[UIColor alloc] initWithRed:233/255.0 green:236/255.0 blue:233/255.0 alpha:1.0].CGColor];
cell.commentButton.tag=indexPath.row;
[cell.commentButton addTarget:self action:#selector(commentButtonPressAction:) forControlEvents:UIControlEventTouchUpInside];
return cell;
![enter image description here][3]}

Answer 1

I guess you are trying to expand the cell.
You can call these few lines to update the cell, including the height.
[tableView beginUpdates];
[tableView reloadRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
[tableView endUpdates];
So just set a flag to show comments in cellForRowAtIndexPath.
//AFTER_YOUR_SETTING
if(showComment){
[cell loadCommentMethod];
}
And also, in heightForRowAtIndexPath
if(showComment){
return [CellClass publicMethodForCalHeight:dataAtIndexPath];
} else {
return kDefaultCellHeight;
}

Answer 2

Change your button action method:
- (void)onButtonTaped:(id)sender
{
UIButton *button = sender;
UILabel *newLabel = [ [ UILabel alloc] initWithFrame:CGRectMake (0, 100, 200, 50)];
newLabel.text = #"Your new text here";
[button.superview addSubview:newLabel];
}
But label will be visible only until cell will be visible on screen. When cell will be recreated label will be deleted. To keep label you still need to change
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

Answer 3

I'm not sure if it works but you can try this. Override touchesBegan: on your cell:
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [touches anyObject];
CGPoint point = [touch locationInView:self];
CGRect rect = [noComments frame];
if (CGRectContainsPoint(rect, point))
{
UILabel *label = ... // the label you need to add.
[self addSubview:label];
}
}

Answer 4

You can make use of the method insertRowsAtIndexPaths:withRowAnimation: of the UITableView. You can refer this link for a tutorial. Also refer the Apple docs