How Do I add a UITableViewCell using a button in IB - objective-c

Question

So what I am trying to do is create a notepad style addition to my app.
All I want is for it to work exactly like apples existing notepad where you click the "add" button in the top right, then it creates a new note that you can write in and then when you click done it adds the note to a Cell in a UITableView.
I already have the UITableView and everything set up I just need to know how to run this action
-(IBAction)noteAdd:(id)sender{
}
And then when you click that button it does what I described above.
How would I go about doing this? I'm a little lost.
This Is How I am Adding the TableView to the scene, just By the way.
//tableview datasource delegate methods
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return cameraArray.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
CustomCell *cell = [tableView dequeueReusableCellWithIdentifier:#"Cell"];
if(cell == nil){
cell = [[CustomCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"Cell"];
}
NSEnumerator *enumerator = [cameraArray objectEnumerator];
id anObject;
NSString *cellName = nil;
while (anObject = [enumerator nextObject]) {
cellName = anObject;
}
//static NSString *cellName = [cameraArray.objectAtIndex];
cell.textLabel.text = [NSString stringWithFormat:cellName];
return cell;
}

Answer 1

In UITableView
- (void)insertRowsAtIndexPaths:(NSArray *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation
So you'd do something like
-(IBAction) noteAdd:(id)sender
{
NSIndexPath *newCellPath = [NSIndexPath indexPathForRow:cameraArray.count
inSection:0];
// I'm assuming cameraArray is declared mutable.
[cameraArray addObject:#"New item"];
[self.tableView insertRowsAtIndexPaths:#[newCellPath]
withRowAnimation:UITableViewRowAnimationFade];
}
While I'm at it, a few comments on your code:
I'm pretty sure this code:
NSEnumerator *enumerator = [cameraArray objectEnumerator];
id anObject;
NSString *cellName = nil;
while (anObject = [enumerator nextObject]) {
cellName = anObject;
}
is a rather roundabout way of getting the last string in the array. You could do that easier with cameraArray.lastObject. But I don't think that's what you want either, I think you're looking for
// XCode >= 4.5:
cellName = cameraArray[indexPath.row];
// XCode < 4.5:
cellName = [cameraArray objectAtIndex:indexPath.row];
And the next line:
cell.textLabel.text = [NSString stringWithFormat:cellName];
Best case, this creates an extraneous string. If the cell name happens to have a % in it, you'll almost certainly either get an error or an EXC_BAD_ACCESS. To fix that error you could use
cell.textLabel.text = [NSString stringWithFormat:#"%#", cellName];
but there's really no reason to. Just assign the string directly:
cell.textLabel.text = cellName;
Or if you insist on a copy:
cell.textLabel.text = [NSString stringWithString:cellName];
// OR
cell.textLabel.text = [[cellName copy] autorelease];
// OR