When I delete a cell in edit mode and use reloadsections to update the tableview, the cell size is too high. I use a custom cell but strangely the same thing happens with the standard 'subtitle' cell style. It doesn't happen with reloadData. I prefer to use reloadSections for the animation.
[self.tableView reloadSections:[NSIndexSet indexSetWithIndex:0] withRowAnimation:UITableViewRowAnimationAutomatic];
Any thoughts anyone?
Related
I have UITableView with variable height custom cells and multiple sections which are not fixed, i am trying to implement load more functionality while user reach at first cell.
After fetching data i am arranging records into NSMutableArray which contains multi-dimensional array to store data section vice.
My problem is when i load more data i don't have idea about how many sections and how many rows in each section comes. So i can not add fix values to move my UITableView at particular position using methods like scrollToRowAtIndexPath or scrollRectToVisible
So every time after getting new record i called reloadData to update my number Of Sections and number Of Rows In Each Section, which also move control to first row of UITableView. I want to be present at current viewing cell not at first cell.
I have also tried answers at reloadData() of UITableView with Dynamic cell heights causes jumpy scrolling this question but that are not helping me.
Don't use reloadData if you want to stay at the same position. Use reloadRowsAtIndexPaths or insertRowsAtIndexPaths or reloadSections instead.
To refresh modified rows with animation:
[self.tableView beginUpdates];
[self.tableView reloadRowsAtIndexPaths:#[indexPathOfYourModifiedCell] withRowAnimation: UITableViewRowAnimationAutomatic];
[self.tableView endUpdates];
To add rows with animation (number of rows is automatically increased):
[self.tableView beginUpdates];
[self.tableView insertRowsAtIndexPaths:#[indexPathOfYourNewCell] withRowAnimation: UITableViewRowAnimationAutomatic];
[self.tableView endUpdates];
Without animation (untested):
[UIView performWithoutAnimation:^{
[self.tableView beginUpdates];
[self.tableView insertRowsAtIndexPaths:#[indexPathOfYourNewCell] withRowAnimation:UITableViewRowAnimationNone];
[self.tableView endUpdates];
}];
Apple documentation: description here
I'm using a UISegmentedControl which changes the contents of a UITableViewCell. After the segment changes I need to reload the cell to update the height of it. I do this by calling:
[self.tableView reloadRowsAtIndexPaths:#[self.segmentIndexPath] withRowAnimation:UITableViewRowAnimationNone];
However, this makes the UITableView scroll to the top. What is the best way to do this without having the table scroll?
Try to use [self.tableView visibleCells] and then find this cell and change
Is it possible to change the font size of a cell in a tableview outside of cellForRowAtIndexPath?
Basically I am trying to change the font size of a specific cell in the table on a timer in viewDidLoad. So once the view is totally loaded a timer will start then after x seconds the font size of one cell in the table will change?
You can, use below code
[self.tableView beginUpdates];
[self.tableView reloadRowsAtIndexPaths:#[indexPathOfYourCell] withRowAnimation:UITableViewRowAnimationNone];
[self.tableView endUpdates];
I have a tableviewcell, that on tap, grows in size, height wise, by updating the frame.
The problem is, the cells below don't adjust, move down to make it visible underneath, and the select row events are still based on the old sizes, before tap. I am using Facebook POP - which is handling animation, so tableview.beginUpdates() is out of the question, maybe?
You cannot manually update the frame of a UITableViewCell by changing its frame or bounds. Instead, you need to change the value returned by -tableView:heightForRowAtIndexPath: for that indexPath and then perform:
[self.tableView beginUpdates];
[self.tableView endUpdates];
This will cause the tableView to recalculate the heights of all the rows.
First, you need to make sure that you return the new height in heightForRowAtIndexPath, then you need to make the tableview update the cell. If you don't care about animation just call [tableview reloadData]. If you want animation you need to call [tableview reloadRowAtIndexPath: indexpath_of_your_cell]
I have set up my table view with 6 static cells and I'm trying to have one cell (the third cell) expand upon selection. The problem is, it resizes after calling reloadRowsAtIndexPaths:, but then the cell appears blank. If I scroll the cell out of view, it shows the contents properly.
When I call [tableView reloadData] the cell isn't blank, but then, I can't enjoy the animation.
Does anyone know why this is so?
Well if you set the height for a row then you need to reload the content of the cell NOT the content of the whole table. If you call [tableview reloadData] then it simply means that you redraw the whole table(without the height correction).
To reload a single cell in the table:
[tableView beginUpdates];
[tableView reloadRowsAtIndexPaths:indexPath] withRowAnimation:UITableViewRowAnimationNone];
[tableView endUpdates];
I don't know if I was the only one having the problem with a blank static cell issue.
I stumbled on a solution and that is calling [tableView reloadData] after calling reloadRowsAtIndexPaths:
Reload the respective table view row using the main thread.
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
// Reload the respective table view row using the main thread.
[self.tblFiles reloadRowsAtIndexPaths:#[[NSIndexPath indexPathForRow:index inSection:0]]
withRowAnimation:UITableViewRowAnimationNone];
}];