UITableView content size while using auto-layout

Question

I want to calculate Content size of my UITableView. I am using autolayout with height UITableViewAutomaticDimension.

Tried to get [UITableView contentsize] after reloading tableview, in that case height get calculated based on estimatedRowHeight.

self.tableView.estimatedRowHeight = 50; self.tableView.rowHeight = UITableViewAutomaticDimension; 

Delegate -

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

Trying to get content size and assign it to height constrain.

[self.tableView reloadData]; [self.tableView layoutIfNeeded]; self.tableHeightConstraint.constant = self.tableView.contentSize.height; 

Any suggestions? Thanks in advance.

Edit:

Finally I am solved my problem with some tweak. I changed tableview height to max (In my case 300 is max) before reloading data on table, so tableview has space to resize all cells.

self.tableHeightConstraint.constant = 300; [self.tableView reloadData]; [self.tableView layoutIfNeeded]; self.tableHeightConstraint.constant = self.tableView.contentSize.height; 

Thanks for help.

Answer 1

Finally I am solved my problem with some tweak. I changed tableview height to max (Objective-C: CGFLOAT_MAX, Swift: CGFloat.greatestFiniteMagnitude) before reloading data on table, so tableview has space to resize all cells.

Objective-C:

self.tableHeightConstraint.constant = CGFLOAT_MAX; [self.tableView reloadData]; [self.tableView layoutIfNeeded]; self.tableHeightConstraint.constant = self.tableView.contentSize.height; 

Swift:

tableHeightConstraint.constant = CGFloat.greatestFiniteMagnitude tableView.reloadData() tableView.layoutIfNeeded() tableHeightConstraint.constant = contentTableView.contentSize.height 

Posting this so it will be helpful for others.

Answer 2

Finally, I understood you problem and here is the solution of it.

I hope you have already done this.

1. First take put some fix height of UITableView.
2. Then take the constraint IBOutlet of UITableView Height.
3. Then under viewDidLayoutSubviews method you can get the original UITableView height after populating the data.

Update the below code:

override func viewDidLayoutSubviews() {     constTableViewHeight.constant = tableView.contentSize.height } 

Update:

self.tableView.estimatedRowHeight = UITableViewAutomaticDimension; 

Please check this.