how reload table view content depend on segment index

[ITCreative]

i went table view change content depend on SegmentIndex

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];     
    }

    // Set up the cell
    book *bok = (book *)[self.booktable objectAtIndex:indexPath.row];

    NSArray *rowoftitle = [NSArray arrayWithObjects:bok.book_title, nil];
    NSArray *rowofauth = [NSArray arrayWithObjects:bok.author_name, nil];
    NSArray *rowofpub = [NSArray arrayWithObjects:bok.pub_name, nil];

    //[cell setText:bok.book_title];
    [tableView beginUpdates];

    switch (segControl.selectedSegmentIndex) 
    {
        case 0:
        [tableView insertRowsAtIndexPaths:rowoftitle withRowAnimation:UITableViewRowAnimationTop];

        //cell.textLabel.text =bok.book_title; 
        break;

    case 1:
        [tableView insertRowsAtIndexPaths:rowofauth withRowAnimation:UITableViewRowAnimationTop];


        //[libraryTV reloadData];
        //cell.textLabel.text =bok.author_name;
        break;
    case 2:
        [tableView insertRowsAtIndexPaths:rowofpub withRowAnimation:UITableViewRowAnimationTop];

        //cell.textLabel.text =bok.pub_name;
        break;

    default:
        break;          
}

    [tableView endUpdates];
    //return cell;  
}

but when run it the expiation is happen :

'NSInvalidArgumentException', reason: '-[NSCFString row]: unrecognized selector sent to instance 0x5d84f80

how resolve it.

[Domele]

Your arrays need to contain index path objects. Also, why are you inserting cells in cellForRowAtIndexPath?

[ITCreative]

Originally Posted by Domele

Your arrays need to contain index path objects. Also, why are you inserting cells in cellForRowAtIndexPath?

i want change the content of table view my object is book

it contain property (book title, book author , book publisher)

and segment in interface ( title , author , publisher)

i want change depend on it


i search and found this iphone - How to animate table view cells when switching between buttons of UISegmentedControl? - Stack Overflow

[Domele]

There is no need to animate your cells though because the number of rows will always stay the same. Every book has 1 title, 1 author, and 1 publisher. There will always be an equal amount of titles, authors, and publishers.

You might have already done some of these steps but I'm going to include all of them to be thorough. Create a UISegmentedControl ivar. Setup the UISegmentedControl ivar. Then in your cellForRowAtIndexPath, check the segmented control's selected segment index. Then depending on the value, set the cell's label's text accordingly.

You shouldn't be adding rows in cellForRowAtIndexPath.

[ITCreative]

Originally Posted by Domele

There is no need to animate your cells though because the number of rows will always stay the same. Every book has 1 title, 1 author, and 1 publisher. There will always be an equal amount of titles, authors, and publishers.

You might have already done some of these steps but I'm going to include all of them to be thorough. Create a UISegmentedControl ivar. Setup the UISegmentedControl ivar. Then in your cellForRowAtIndexPath, check the segmented control's selected segment index. Then depending on the value, set the cell's label's text accordingly.

You shouldn't be adding rows in cellForRowAtIndexPath.

i do this :

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
	
    static NSString *CellIdentifier = @"Cell";
	
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
		cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
		
    }
	
    // Set up the cell
	book *bok = (book *)[self.booktable objectAtIndex:indexPath.row];
	

	
	switch (segControl.selectedSegmentIndex) 
	{
		case 0:

	cell.textLabel.text =bok.book_title; 

			break;
			
		case 1:

		cell.textLabel.text =bok.author_name;
			break;
		case 2:

			cell.textLabel.text =bok.pub_name;
			break;
			
		default:
			break;			
	}
	

	return cell;
	
}

but when run just book title display

[Domele]

Show where you are creating your segmented controller. If made in IB, double check the connection.

[ITCreative]

Originally Posted by Domele

Show where you are creating your segmented controller. If made in IB, double check the connection.

ya it is not connect



but Now i connect it with new method " - (IBAction) segmentedControlChanged "

then change my code :

- (IBAction) segmentedControlChanged
{
	for (int indexPath =0; indexPath < booktable.count; indexPath++)
	{
	book *bok = (book *)[self.booktable objectAtIndex:indexPath];
	
	
	
	switch (segControl.selectedSegmentIndex) 
	{
		case 0:
			
			rowoflibrary = [NSArray arrayWithObjects:bok.book_title,nil];
			
			//cell.textLabel.text =bok.book_title; 
			
			break;
			
		case 1:
			rowoflibrary = [NSArray arrayWithObjects:bok.author_name,nil];

			//cell.textLabel.text =bok.author_name;
			break;
		case 2:
			rowoflibrary = [NSArray arrayWithObjects:bok.pub_name,nil];

			//cell.textLabel.text =bok.pub_name;
			break;
			
		default:
			break;			
	}
	
	}
	
}

and table view :

- (NSInteger)tableView:(UITableView *)tableView 
 numberOfRowsInSection:(NSInteger)section {
	
		return [booktable count];
	
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
	
    static NSString *CellIdentifier = @"Cell";
	
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
		cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
		
    }
	
    // Set up the cell
		
cell.textLabel.text = [rowoflibrary objectAtIndex:indexPath.row];
	return cell;
	
}

Now when run it the table view empty

[Domele]

You need to retain your array, otherwise it's going to get deallocated. I suggest you read Brian Slick's guide to properties.