Cannot Reload Tableview from custom cell - iphone

Question

I have a UITableView with custom tableview cells. One of my Cell has a UITextField, I'm handling the textfield delegate methods in the custom tableviewCell class. I need to reload the tableview once the user entered a text, I had done the below thing but not worked , Any idea please help me.
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
UITableView *parentTable = (UITableView *)self.superview;
[parentTable reloadData];
}

Answer 1

Register the view controller to receive notifications that the data has been changed, and have it refresh the table when it receives one. Then have the parser send it out.
Registering for it is easy:
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(reloadTableView:)
name:#"reloadTableView"
object:nil];
Your refresh method needs to be set up to receive these notifications, along these lines:
- (void)reloadTableView:(NSNotification *)notif {
[self.yourTableName reloadData];
}
And it's important to stop observing in your ViewDidUnload:
[[NSNotificationCenter defaultCenter] removeObserver:self];
Then in the parser you need to simply add this when it's complete:
[[NSNotificationCenter defaultCenter] postNotificationName:#"reloadTableView"
object:nil];
The view controller (and anyone else observing the notification with that name) will get the message and perform its task.
Thanks..

Answer 2

CustomCell.h
#property (nonatomic, copy) void(^tapHandler)(NSUInteger tag);
CustomCell.m
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
NSUInteger tag = 10; //Need to change the tag
self.tapHandler(10);
}
Controller.m
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath
{
// Whatever content was previously there. Add the below line in addition
cell.tapHandler = ^(NSUInteger tag){
[tableView reloadData];
};
return cell
}
Hope it helps!

Answer 3

first , the superview of the textfiled is not UITableview, it is tableviewcell or tableviewcell.contentview (depends on your code)
then, you just need to set the tableview as your view controller's member ,or property,
then
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
[self.tableview reloadData];
}

Answer 4

Try this,
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
[self.parentTable reloadData];
}

Answer 5

It's better to keep a reference of table view in CustomCell
// interface
UITableView *tableView;
// propery
#property (nonatomic)UITableView * tableView;
Then
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
//your stuff
cell.tableView= tableView;
}

Answer 6

- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
UITableView *parentTable = (UITableView *)textField.superview.superview;
[parentTable reloadData];
}

Answer 7

Don't reload whole table view for that small operation. Just reload the Cell in which the text field is. Also didnot forget to update your data source as table view cell fetch the data from the data source while the cell is loading.
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
[tableViewDataSource addObject:textField.text];//this will fill the data source with data of textfield
CustomCell *cell = (CustomCell *)textField.superview.superview;
NSIndexPath *indexPath = [parentTable indexPathForCell:cell];
[parentTable reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
}

Answer 8

By (UITableView *)self.superview; you will not get the table view. Try below code :
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
YourCell *cell = (YourCell *)[[textField superview] superview]; // you will get cell
UITableView *table = cell.superview; // you will get table view
[table reloadData];
}

Answer 9

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
tableReload++;
NSString *CellIdentifier = [NSString stringWithFormat:#"cell %d%d",indexPath.row,tableReload];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
cell.textLabel.text = #"Hello";
}
// Configure the cell.
return cell;
}

Answer 10

Try this,
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
[self.yourTableName reloadData];
[self.yourTableName reloadInputViews];
}