I am creating an App with following design:
I have a UITableView with custom UITableViewCell.
Each UITableViewCell contains a scroll view with multiple UIViews of size 150x150
Each of the small UIView contains a UITableView.
Since i am new to this, the forum is not allowing me to upload a picture, which could have explained the design very easily.
I have created the full design in the storyboard. The issue i am having is that the inner UITableView is not getting populated. The cellForRowAtIndexPath, numberOfSections or the numberOfRowsInSection methods of the datasource table view controller class do not get called.
I am using XCode 4.3.2 iOS5.
Following are the class structure:
NewsTableViewController : The ViewController for the mail table.
NewsTableViewCell : Custom TableViewCell which contains object of custom UIScrollView.
NewsScrollView: Custom UIScrollView containing UIViews and UITableView objects which are linked to the Storyboard UITableViews inside the UIViews.
NewsInnerTableViewController : TableViewController to be used as Datasource and Delegate for InnerTableViews.
I have created the object of NewsInnerTableViewController in NewsTableViewController and assigned it as delegate and datasource of the inner tableview.
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSSTring *CellIdentifier = #"NewCell"
NewsTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
newsInnerTableController = [[NewsInnerTableViewController alloc] initWithStyle:UITableViewStylePlain];
cell.scrollView.innerTable.delegate = newsInnerTableController;
cell.scrollView.innerTable.datasource = newsInnerTableController;
return cell;
}
I am unable to understand where i am going wrong. or is something like this needs to be created is some other way. or the Datasource and delegate needs to be assigned at some other level.
Please share your thoughts on this.
the trick is to have the UITableTableViewCell as the Datasource and delegate for the inner UITableView
http://iosstuff.wordpress.com/2011/06/29/adding-a-uitableview-inside-a-uitableviewcell/
Related
I haven't developed any iOS apps in a while. I am fine with both swift and Objective-C but what I find different is adding a UITableView to ViewController. Before, I used to add a UITableView to ViewController, add the required datasource methods and the typical UITableViewCell object, and return the cell in cellForRowAtIndexPath:, which would display empty cells depending on the number of rows I return. Now, I did everything the same, but the UITableView is empty and when I scroll I see the lines but not my cell.textlabel.text value, which I set. It seems now I am supposed to add UITableViewCell to the UITableView and remove the
#pragma-mark TableView Datasource
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [_formTitles count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell =[tableView dequeueReusableCellWithIdentifier:#"cell"];
if(cell==NULL)
{
cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:#"cell"];
}
cell.textLabel.text=[_formTitles objectAtIndex:indexPath.row];
cell.detailTextLabel.text=#"Kaushik";
return cell;
}
I can't find a simple post online regarding the same.
Can someone post what are the changes in the new iOS 9 in a simple manner?
Thank you
Right..For those of you who are still prefer to add a tableview to a viewcontroller.Here are the steps
In the ViewController drag and drop the tableview.Now instead of the lines which you see in the old Xcode.This time you would see a blank table view with the text " Table View prototype content" in the middle.
We usually create a tableviewcell only we doing anything different like adding more labels or image etc but hereafter it is required to add a tableviewcell in the tableview.Drag and drop a tableview onto the tableview.It will display as protype cells.One can select type of cell here itself as basic,value 1,value 2 or subtitle.Also NEED TO SET THE REUSE IDENTIFIER IN THE STORYBOARD UTILITIES PANEL ON YOUR RIGHT. At the end, you can select the tableview and add the missing constraints.
Implement the typical required datasource methods in your viewcontroller class.
(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 5;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell =[tableView dequeueReusableCellWithIdentifier:#"cell"];
cell.textLabel.text=#"text";
cell.detailTextLabel.text=#"DetailedText";
return cell;
}
The change here is that we dont require the usual if(cell==nil)
{..}
piece of code since we added the prototype cells to the storyboard.
Don;t forget to connect the delegate and datasource of the tableview to the viewcontroller.
This should display the tableview in your viewcontroller but i am getting a space on top of the tableview which i don't know why.Anyway this is how you add a tableview to a view controller using Objective-C language in iOS 9.3.
FYI: Guys if i've missed anything, please mention it in the comments
Thank you
Put tableView to view controller and link it to viewcontroller.
link delegate and datasource of tableview to viewcontroller.
in
viewcontroller.h
#interface ViewController :<UITableViewDelegate, UITableViewDataSource>
in viewWillAppear put
tblService.delegate=self;
tblService.dataSource=self;
and your array elements.
5.Impliment your tableview delegate method and datasource method .
6.be sure you cell identifier equal the one put on storyboard.
this link will help you more to implement your first app and this video.
I am creating a tableView which has collectionView inside.
what I did :
1. Created a table view inside a controller.
2. created a custom tableViewCell with collectionView inside of that and providing it with tag
3. Created a custom collectionViewcell.
Now i made controller the delegate and datasource for both collectionView and tableView.
Now tableView should have multiple tableViewcells and each tableViewCell has CollectionView
One tableViewCell has one section.
Problem :-
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
self.arrayModel = self.SlotsArray[indexPath.section];
}
But here is a catch : lets say my screen size shows two tableViewcell, then all methods of tableCells are called first and then all methods of collectionView are called instead i want that after 1st section of tableViewcell is created , it should call collectionView methods and create it. then go to tableView method make 2nd section and then create its collectionView.
Is there away to do this.
Somewhere i read on net thet i will have to subclass CollectionView and add a property index and then while setting viewcontroller as delegate and datasource , set index also.
But i have created CollectionView By nib and adding it to the tableCell class by "TAG"
self.imageCollectionView = [self.contentView viewWithTag:2511];
Can you tell how can i achieve this?
In your case, you should have one table view, having cells. Each cell will have a collection view inside it.
Number of table view cells will equal to the count of your data-source. As we all know, table view cell will be created one by one and assign each cell a data source which will be used to fill your collection view (which is inside each cell).
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
CategoryCell *cell = [tableView dequeueReusableCellWithIdentifier:kCellIdentifierCategory forIndexPath:indexPath];
NSArray *arrVideos = [parentArray objectAtIndex:indexPath.row];
[cell setCollectionData:arrVideos];
return cell;
}
Now, inside that table view cell class, implement setCollectionData method to fill its collection view:
- (void)setCollectionData:(NSArray *)collectionData
{
self.arrCollectionData = collectionData;
[self.yourCollectioView reloadData];
}
Now, each collection cell would be feed from this array:
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
VideoCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:kCellIdentifierVideo forIndexPath:indexPath];
NSDictionary *_video = [self.arrCollectionData objectAtIndex:[indexPath row]];
// Use this dictionary
[cell.lblVideoTitle setText:_video.title];
––––––––––
––––––––––
return cell;
}
Refer following image:
Hope it helps you !!!
You can take a look on this, surely it will help you to implement horizontal scrolling collection view inside uitableviewcell.
https://github.com/ThornTechPublic/HorizontalScrollingCollectionView/blob/master/GithubImages/videoGrid.gif
https://github.com/agusso/ASOXScrollTableViewCell
I am having an interesting problem creating the custom tableview I need...
I found this question, but it does not really address my issue...
I am trying to put a subclassed UIView inside a subclassed UITableViewCell. The custom view holds a UIButton and a couple labels. Simplified, it's like this:
Both the custom view and custom tableviewcell have xibs.
MyCustomView.xib's class is set to MyCustomView and I have properties for the labels and the button as well as an IBAction for the button.
MyCustomTableView.xib has a property for MyCustomView and is importing MyCustomView.h.
In MyCustomView.xib, I have this init:
-(id)initWithNibName:(NSString *)nibName nibBundle:(NSBundle *)nibBundle myLabelText:(NSString *)labelText {
//The custom view in the tableviewcell is 69 by 64...
if ((self = [super initWithFrame:CGRectMake(0, 0, 69, 64)])) {
[self setmyLabelText:labelText];
}
return self;
}
And in my TableViewController...
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
MyCustomTableViewCell *cell = (MyCustomTableViewCell *)[tableView dequeueReusableCellWithIdentifier:#"theCell" forIndexPath:indexPath];
// Configure the cell...
cell.customView = [[MyCustomView alloc] initWithNibName:#"MyCustomView" nibBundle:nil fileContentID:#"Some Text..."];
return cell;
}
When I run the app, the custom tableview cell's contents are fine, but the content of the custom view inside the custom tableview cell is blank.
It seems that MyCustomView's initializer(-initWithNibName:nibBundle:myLabelText:) don't load any xib.
This post will help you.
How to load a xib file in a UIView
...and MyCustomView should be created once inside MyCustomTableViewCell, as #rdelmar says.
You need to do most of the formatting work in MyCustomTableViewCell - I would not use a XIB and code the views directly because that class is called many times. Apple has number of sample codes regarding TableViewCells - One of them I believe is called Elements that use fancy tableview cells for the Elements of the Periodic Table. Most of my apps use custom cells with icon images and I started with that sample code many years back (since IOS 4).
Your CellForRowatIndexPath should just be passing the image and the label text to your tableviewCell Class instance. If you have question just ask - but I am sure that sample code from apple is sufficient to get you started.
I have added a UITableView inside a UIViewController in IB, I have set the TableView content to "Static Cells" since that's what I want, and everything seems fine when I haven't added any content to the UITableView. But if I for example change the first UITableViewCell's background color to black it doesn't display black when running the app. I have added UITableViewControllerDelegate and UITableViewDataSource and set the tableView.delage = self;. But still no changes I make to the tableView displays when I run the app.
What can the problem be?
NOTE: I have also tried to add tableView.dataSource = self;, but that just make the app crash.
Yes, you can have static table view content in UIViewController.
All you need to do is:
-Create the table's static cells in interface builder and design them the way you like.
-Make the UIViewController implement table view's data source and delegate:
#interface MyViewController : UIViewController<UITableViewDataSource, UITableViewDelegate>
-Connect the table view's delegate and dataSource to the view controller in interface builder
-Implement -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section to return the number of your cells. (e.g. return 10, yes simple as that)
-Connect your cells to your code as IBOutlets in Interface Builder. IMPORTANT: Make sure they are strong, weak won't work. e.g. #property (strong, nonatomic) IBOutlet UITableViewCell *myFirstCell;
-Implement -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath to return the correct cell at index path. e.g:
int num = indexPath.row;
UITableViewCell *cell;
switch (num) {
case 0:
cell = self.myFirstCell;
break;
case 1:
cell = self.mySecondCell;
break;
}
return cell;
If you apply all these steps, you should have working static cells that works for tables with not many cells. Perfect for tables that you have a few (probably no more than 10-20 would be enough) content. I've ran the same issue a few days ago and I confirm that it works. More info check here: Best approach to add Static-TableView-Cells to a UIViewcontroller?
You will want to use a UITableViewController, not a UIViewController with a UITableView added to it, because you're only supposed to use static cells with a UITableViewController. There are probably ways to hack around it so you can get the static cells to work, but it's much simpler to just use a UITableViewController, and you'll have fewer issues to deal with, especially if you ever change the content of the table.
Seems you have problem with the background issue for UITableViewCell. So don't use background for checking if content is drawing or not.
You can use debugger for this for example or NSLog.
NOTE: the cell has content view that can be modified. I don't remember but seems the cell has not got background property that can be adjusted with a color.
If you tried this line below e.g. - it will no work and color will be white as default color.
[cell setBackgroundColor:[UIColor blackColor]];
Try to add something to the cell for example picture and then you can see the result as I think.
Use this code:
[cell.contentView setBackgroundColor:[UIColor blackColor]]; in this delegate
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
it will help you as I think.
Have you implementede the protocol? ...
another thing is that when implementing the protocol i had an issue when no cell was displayed..
try with this implementation for the given method.
-(UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *CellIdentifier=#"Cell";
CobranzaCell *cell = [[CobranzaCell alloc]init];
cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier
forIndexPath:indexPath];
if (cell == nil) {
cell = [[CobranzaCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
// Configure the cell...
return cell;
}
You cannot use the static cells in simple UIViewController subclass. Instead, you should use the instance of UITableViewController. The hack is in your storyboard drag the instance of UIViewController to your storyboard canvas. Then, drag the Container View from objects library and drop it to your UIViewController's view. By default it will create the embed segue with related UIViewController instance. What you want to do - delete this view controller, drag and drop instance of UITableViewController from objects library, then right click and drag from your Container View to just dropped UITableViewController. Chose embed. Now your table view controller gets the size of container view and you can use static cells in it! Hope it will help!
I have a project where I have three labels in a custom cell prototype class (subclass of UITableViewCell) that are linked to three label outlets in the custom cell's .h file.
Then in my main viewcontroller class (which houses the prototype cells and is a subclass of UITableViewController) my delegate method that interacts with these labels looks like this:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"ArticleCell";
ArticleCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
int row = indexPath.row;
cell.articleTitle.text = self.articleTitles[row];
cell.articleURL.text = self.articleURLs[row];
cell.articlePreview.text = self.articleURLs[row];
return cell;
}
Yet I get these three errors:
Connection "articleURL" cannot have a prototype object as its destination.
Connection "articlePreview" cannot have a prototype object as its destination.
Connection "articleTitle" cannot have a prototype object as its destination.
What exactly am I doing wrong? I'm so confused.
You might be connecting the Label outlets wrong in your project. I assume that labels articleURL, articlePreview and articleTitle are defined in the UITableViewCell. They should be connected for outlets in the corresponding customTableViewCell class not in the UIViewController. As you are referencing self.articleTitles in cellForRowAtIndexPath, it suggests that you are connecting them as outlets of current class not the customTableViewCell class. It is good idea to define your customTableCell as a property to your current class which is having UITableView's Delegate implemented.
Have a look at TableView Programming for details.