in my iphone app i am adding data to table view on click of button but its not getting updated.It ll update only if i reopen the app.
Use [yourTableView reloadData] to tell the tableview to reload its data and be updated.
Use the [tableView reloadData] method on button click after updating the table view's data source.
So something like this:
-(IBAction) buttonPressed:(id)sender
{
// Update data source of table first
[tableView reloadData]
}
Also check this out: UITableView reload data
try [tableview reloadData]
in wiewWillApear method
Preview Controller to reload its data from its data source.
- (void) reloadData
The display is recomputed only if the current preview item has changed.
Related
Given this Core Data Model: Photographer <-->>Photos.
After adding a Photographer via a Modal View, the tableView of Photographers updates accordingly.
The problem is, that it doesn't do the same for Photos. I can add a Photo via a Modal View, and the tableView of Photos for that particular Photographer does not update immediately. Once I navigate back to the tableView of Photographers and select the same Photographer again, it updates as expected.
How can I get the tableView of Photos to update as soon as the Modal View(where the user added the object) gets dismissed?
Where modal view dismiss try to use:
[tableView reloadData];
Try
[tableview reload];
method after getting new data.
Check your error variable if it contains an error.
You directly assign the result of -executeFetchRequest:error: to an ivar (photographerPhotosArray). This either leaks or causes an immediate release.
Consider switching to NSFetchedResultsController since it helps you a lot.
Check your array first is it fill or empty? try with NSLog and check it. if it exist then reload your table
I know there has to be a simple solution for this. I want to get my tableView to update every time that viewWillAppear would run. How do I call it from within the viewWillAppear method, and get it to run as often as it needs to?
You could try using [tableView reloadData].
[self.tableview reloadData];
use it
use
[yourTableView reloadData];
Just reload the table.
Just put this line in viewWillAppear:
[tableView reloadData];
reloadData: Reloads the rows and sections of the receiver.
-Courtesy : Apple Documentation.
I am developing an app in which I have to delete the contacts from table ,problem is that when i delete one contact ,I have switch from one view to another then I can see the changing b/c i put the reload method in viewAppear any suggestion?
In general you should avoid to use reloadData to refresh the content of a UITableView, you should only do it if you can't avoid it (ie you replace everything in your table) or the user won't see it (ie in viewWillAppear).
I would suggest to use insertRowsAtIndexPaths:withRowAnimation: to insert single rows and deleteRowsAtIndexPaths:withRowAnimation: to remove rows.
So you get the indexPath of the row when you delete a contact and call [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:deletedIndexPath] withRowAnimation:UITableViewRowAnimationFade]
Those details make the difference between a app and a good app.
you can call [self.tableView reloadData]; to reload the table view by staying on the current view.
You can immediately reload table after deleting the contact !
Just call [self.tableView reloadData] in the UITableViewController after the data has been modified. This will update the table view to and reflect the new state of the data.
Sometimes tiny looking problem is ignored to handle in the last but you never know that will become nightmare for you, happening with me.
Thanks in advance, problem my app's settings page contains tableView and every setting element is one of the view. One of the setting item (row) offers show expands a few list of items in another listTableView. After making a selection in listTableView when i come back to my settings tableView using navigationItem.leftButton (Back), selected item value overlaps the previous item's value, in the sense [tableView reloadData] in viewWillAppear works fine but tableView rows are not fresh drawn. It doesn't refresh the cell's UI.
Note that if settingTableView has any subview like UIButton etc it has the latest value, i can use that as workaround but the only problem is when is select this row again Selection has old value that overlaps new value on selecting the row.
I will appreciate any suggestion or sample code using will be great help.
Thanks a ton
Amit Singh
Use [tableView reloadData]; in your viewWillAppear method.
or use [tableView reloadData]; in viewDidAppear method
The problem you are facing is perhaps due to portion of cell that is reusable and the one that is not reused. Check out the code you are writing inside the block of
if(cell==nil){}
components you have created inside block will not get recreated and others might be recreating causing the overlapping on the cell.
In my case, I had to use [self.tableView reloadData]; rather than [tableView reloadData]; in the viewWillAppear method.
How do I have a UITableView be notified that the data it is using is new and all old data/cells should be flushed.
I have a search bar that will cause the UITableView to be refreshed when new queries are entered.
An example would be:
[myTableView reloadData];