So I am trying to display horizontally scrollable collection view inside tableviewcell. the code i am using is
(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = (UITableViewCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
UICollectionViewController *cv = [self.storyboard instantiateViewControllerWithIdentifier:#"collectionViewID"];
cv.view.frame = cell.contentView.bounds;
[self addChildViewController:cv];
[cell.contentView addSubview:cv.view];
[cv didMoveToParentViewController:self];
return cell;
}
I am getting error: Object can not be nil. I'd appreciate if someone can help me out understanding the error.
I have done this in my app.
I found it much easier to subclass UITableViewCell. The I could put all the UICollectionView setup and the UICollectionView datasource and delegate inside the code for the cell.
I then provided one public property of type NSArray which I pass into the cell. The cell then uses this array as the datasource for the UICollectionView that it owns itself.
Made it a lot easier to manage.
check your UICollectionViewControlle's attribute inspector for identifier value {collectionViewID}
EDIT
[self addChildViewController:cv]; --> I think you want to add cv to the cell, isn't you?
Related
I want a tableview inside another tableviewCell like the following image.It shows one complete cell with a few details and a tableview. How can i do this?I was following this link Link.This is an old code .It is using xibs.I dont have any idea where to set the delegate for the inner tableview.Please help.Any suggestion will be realy helpfull.
My first idea would be:
Subclass UITableViewCell ("MainTableViewCell") and extend it with UITableViewDelegate and UITableViewDatasource.
Next to all the properties you need in "MainTableViewCell" add a TableView "tableViewFilms" and an array "films" for the Films. Also don't forget to add the datasource methods for a tableview to the implementation file.
To easily setup a cell I add a setup-method to the header-file. Which can be called once the cell is instantiated. You can modify it as you want, give it as many parameters as you want and in the implementation (see step 4) set datasource and delegate of your inner tableview.
- (void)setupCellWithDictionary:(NSDictionary *)dict AndArray:(NSArray *)filmsForInnerTable;
You can call this method in your datasource method, once a cell is instantiated:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
MainTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"MainTableViewCell" forIndexPath:indexPath];
NSDictionary *dict = (NSDictionary *) allDataDictionaries[indexPath.row];
[cell setupCellWithDictionary:dict AndArray:filmsForInnerTable];
return cell;
}
Subclass UITableViewCell another time: "FilmTableViewCell"
When setting up the a Cell of "MainTableViewCell", set the delegate and the datasource of "tableViewFilms" to self (object of "MainTableViewCell").
- (void)setupCellWithDictionary:(NSDictionary *)dict AndArray:(NSArray *)filmsForInnerTable{
self.films = filmsForInnerTable;
self.tableViewFilms.dataSource = self;
self.tableViewFilms.delegate = self;
[self.tableView reload];
//more instructions
}
Populate the tableview with the data from the array "films" using "FilmTableViewCells".
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
FilmTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"FilmTableViewCell" forIndexPath:indexPath];
Film *film = (Film*)films[indexPath.row];
[cell setupCellWithFilm:film];
return cell;
}
Hope this helps.
Don't forget to use Outlets, the method definitions and to set the reuse-identifiers for the cells!
Check my answer in this ios 8 Swift - TableView with embedded CollectionView. You have replace that UICollectionView with UITableView.
Everything else is pretty much the same. Its just a head start with UITableView and UICollectionView created programmatically.
I can change it accordingly if you don't understand.
I have a project where I need to use a custom UITableViewCell. I'm designing the cell as a prototype in storyboard and it looks fine there. I assign the prototype to my custom UITableViewCell subclass, give it the same reuse identifier I'm using in my UITableView and link the UILabel on the prototype cell to an IBOutlet in my UITableViewCell subclass.
When I call it from the UITableView the cell is created and if I add labels and buttons in the code of that class (create them with a CGRect and all) they all work but the labels I've added in the storyboard never show up.
I don't understand how my subclass can be called and created successfully but its layout and subviews from the storyboard don't seem to exist as far as my app is concerned. What am I doing wrong?
Here's my cellForRowAtIndexPath code
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
MyTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"cell" forIndexPath:indexPath];
// Configure the cell...
return cell;
}
I've run into this issue before, and in my case, the problem was that the auto-generated code for the view controller included a call to:
[UITableView registerClass:forCellReuseIdentifier:]
I would suggest checking for and removing any calls to the above, or to
[UITableView registerNib:forCellReuseIdentifier:]
and trying your original code again.
acreichman, add casting in cellForRow and put an NSLog in you cell's awakeFromNib to see if you get there. Let me know...
Your cellForIndexViewPath should look like this, to create a simple custom cell with label,
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"SimpleTableCell";
SimpleTableCell *cell = (SimpleTableCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil)
{
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"SimpleTableCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
}
cell.nameLabel.text = [tableData objectAtIndex:indexPath.row];
return cell;
}
Make sure that you have made all connections well, set datasource and delegate to table and then set the “Identifier” of the custom cell to "MyTableViewCell" in “Attributes Inspector” like this,
For storyboard:
Add "MyTableViewCell" instead of "SimpleTableCell" as shown in above screenshot.
"invalid nib registered for identifier (myGoal) - nib must contain exactly one top level object which must be a UITableViewCell instance"
Thats the exception I keep on getting. I am using both, storyboard and XIB.
In my storyboard, I have a tableview inside of a navigation view. The tableview is set to dynamic prototypes and the number of prototype cells is zero. The reason is because I wanted to add a custom cell programmatically.
The first time I added the cells programmatically, I was using one of the generic cell styles. At it would work!
- (void)viewDidLoad
{
[super viewDidLoad];
[self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"myGoal"];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"myGoal"
forIndexPath:indexPath];
//do stuff with cell
}
It would let me have a tableview with the default cell style, which has one label.
Next I wanted to customize my cell so that it would have multiple label and a few extra buttons. Normally, I'd do it in a storyboard interface builder, but this time I need to do it programatically.
So I created a custom tableviewcell class along with its Xib counterpart. In the Xib I designed it how I wanted. The problem is in getting this cell to show up in the tableview.
Does it matter that the tableview is in a storyboard and the tableviewcell is in a xib?
In order to register the custom nib, I did almost the same thing as above, yet it crashes:
- (void)viewDidLoad
{
[super viewDidLoad];
UINib *dhCustomNib = [UINib nibWithNibName:#"DHTableViewCell" bundle:nil];
[self.tableView registerNib:dhCustomNib forCellReuseIdentifier:#"myGoal"];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
DHTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"myGoal"
forIndexPath:indexPath]; //It crashes at this point
//do stuff with cell
}
What am I missing?
You need to set the top level object as the DHTableViewCell subclass not the file's owner.
Who do to set a tableView Cell Identifier in a UIViewController ?
Using UITableViewController I always do it through the interface (see screenshot below)
Now I dont see that option if I use UIViewController
here's my code
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
NSString *messageAtIndexPath = [messageArray objectAtIndex :[indexPath row]];
[[cell textLabel] setText:messageAtIndexPath];
return cell;
}
please advice
Unless I add a prototype cell which messes my interface.
A couple things here:
1) A UITableViewController inherits from UIViewController (which I think is what you are actually talking about, instead of "UIControllerView"). UITableViewControllers have the ability to do prototype cells and set these identifiers...
2) ... which are case sensitive. In your screenshot, you call it "cell" while in your code you call it "Cell".
They need to be spelled exactly the same and in the same upper/lower case way.
It's not super clear what you are trying to do here, but I sense that you want to create a custom cell in your XIB or storyboard and then reference it in your "cellForRowAtIndexPath:" method. Here is a tutorial that talks about prototype cells and identifiers and using them in storyboards, and I hope this helps you out.
this is Nsr (just a beginner in xcoding), using xcode 4.3.3,
I've made a Custom UITableview with Custom UITableviewcell through storyboarding,
I have a UIBUtton and a UILabel in my custom cell.
i'v remove the cell selection (also cleared the background) so that only the buttons can be accessable which works as a backgound for the custom UILabel.
Now there are bunch of buttons since of using data array, and when i click any button, it segues to the other view (detail view), all i wanted is to set the custom Label (set over the detail view) from the previous selected button with "Label"...
means new Label = previous page's clicked Label from the custom tableview..
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
Custom *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[Custom alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.myLabel.text = [myArray objectAtIndex:indexPath.row];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
[self.myTable reloadData];
}
I hope you get my problem, very sorry for my poor english..
Please help me, im in a real mess, coz this problem already took my 3 days :(
Thanx in advance, Cheers.
function return Custom cell but in header you write UItableviewCell change this to Custom