cellForRowAtIndex not being called in UITableViewController? - ios

I've currently got a single working UISearchController implemented inside the header view of a UITableViewController. I wish for my other views to also follow suit but some are UICollectionViewControllers. Is there a way to create one UISearchController and just call them across all the views within the headers? All of the results must show in a table.
I had attempted to create one for each view but the UICollectionViewController was giving me some problems. I couldn't figure out how to set and update a table for the search controller. It wouldn't allow me to override the tableView methods as i guess the controller is a CollectionView.
Any help is appreciated.
EDIT:
Should also add that the search method/data will be the same across all of the views. See how the stock iOS Music app uses search bars as an example.
EDIT 2:
I've nearly cracked it (I think). I've setup a singleton "SharingManager", within this i have 3 arrays. Now I have 2 views, one named ArtistsView and one SearchTableViewController. The Search view contains all of the table methods and the ArtistsView communicates with that using:
self.searchResultsController = UISearchController(searchResultsController: SearchTableViewController())
I also copy the variables within the singleton to variables that are within the SearchTableViewController.
The issue i'm having now is that the cellForRowAtIndexItem method is not being called. All the other ones are, i can even see the section headings are being displayed. I have set up various println() statements to see where i could've gone wrong, the numberOfRowsInSection is also returning the correct numbers. Any ideas?

What I have done in the past to solve this kind of issue, and what seems to be the most flexible is to have it so that when you tap on the searchbar, your app actually transitions to another view controller that handles the search and search results.
Fake search bar button on each screen you wish to use it.
When tapping the search bar, screen cap your current view controller.
Set the screen cap to the background of your search results controller, blurred or darkened a bit if you like, so it doesn't interfere with the search results.
Transition between your previous view controller and the new search results controller with a fade.
You'll be able to give the user the impression that they never left the original screen they were on.

Related

Show typeahead popover while user is typing

I'm trying to do something like the following:
As you can see, a popover shows up as you start typing, and updates the results as you type. My question is regarding the UI and how to actually implement it.
How can I show a custom popover when the user starts typing? Is it possible to load a custom view into a popover? Additionally, what would I need to do if I wanted to also include an image view in each typeahead result?
Good question, which most beginners have. Follow my instructions given below.
First create a view controller and design it as you wanted it to be and include a Search Controller and implement it's delegate functions in the view controller.swift file(Hope you know to work with delegates for controllers,else just google it...It's pretty easy).
Then add a Tableview in center of the view for viewing the results like shown in your question & and add a custom cell into the table view and then setup a custom class file for that cell exactly like how you works with tableview controller.Use just the basics of tableview stuffs.
Setup outlets and all for the controls and buttons.
Create an array named 'filteredResults' or name it as you like to reload the tableview data whenever the text is changed in search bar.
To detect and call your function while user changes text in search bar,You can use didTextChanged delegate function of search bar.
Note though that it's better to find everything else by your own so that you feel confident about yourself when you solve the problem at the end.

Storyboards: How do I use the same view controller in several places?

For years, I've hand-coded my view code for iPhone apps, but now I'm giving storyboards another look.
One common pattern in my code is to use the same view controller in two places, but with slight UI variations. For example, when browsing a list of brands (BrandListController), I'd like to show a table view of all brands in the system; tapping a brand shows you its products. But when filtering items by brand, I'd like to show a table view of brands (with the same content and same cell appearance), but I'd like tapping a row to take you back to the filter screen instead of showing you that brand's items. I'd also like a "Search" bar button item in the top right.
It's easy to make these things happen in code, by just adding a boolean member variable so the controller can be configured before it's presented.
But how would I do this with storyboards? I could have multiple controllers segue to the same instance of BrandListController, but again, I would want the controller to have different behavior and include/exclude UI elements based on how it's used. It seems like a bad idea to create two separate instances of BrandListController in the storyboard, because then I would have to duplicate all the outlet connections and I would have to keep changes in sync. But what are my other options?
The thing to realise with Storyboards is that you don't necessarily have to only use a single storyboard.
You can use multiple storyboards or use them in conjunction with nibs etc...
However, in this case what you could do is still use you boolean property on the controller.
Then in the prepareForSegue method of the other controllers you can set this boolean property to change the behaviour. You might even have a couple of nibs that defines a small section of UI to place into the view depending on the property.
I've done stuff like this to pass blocks into view controller too.
For example...
I had a "User Search" controller that had a default behaviour of if you tap a user it will push to that user's profile page.
But I could pass in a code block that would, for instance, dismiss the search controller and I use the selected user to create a new message to them (or whatever). Or something else entirely depending on the code block I passed in.
EDIT
LOL, just re-read your question. What I did with the blocks would work for you too. I created a block property called userTappedBlock or something. If that exists then I run it when the cell is tapped. If not I do the default behaviour.

Using a tabbar for controlling the tableview data in iOS without using storyboards

I am building an app which mainly shows a tableview. In this tableview I have some custom table rows. The table rows are filled with data received from the server. I receive multiple kinds of data from the server. I will store it in arrays.
For example, I've got three kinds of arrays. Each is filled with different kinds of data received from the server. See below:
(NSArray*)carList_
(NSArray*)motorcycleList_
(NSArray*)bicycleList_
The actual program that I've got now, only shows the carList in the tableview. Foreach car in carList, there is a table row.
The thing that I've in mind to do is a little bit tricky. I want to add a tabbar at the bottom of the screen with three buttons. When I press the first button, I want the table to be filled with the carList. When I press the second button, I want to fill the table with the motorcycleList. And when I press the third button, I want to fill the table with the bicycleList.
As you can see, I will use the same tableview. I will only refill it with the data I want to see. Is this allowed in iOS? Cause I read something about that the tabbar is for multiple views, and I only want to use it for changing the data in my table. Only the fourth button I've planned for future development will open a new view. If it is not allowed, what is a good alternative do do it? Buttons maybe? I searched the web for what I want to do, but it seems that my idea has never been used before, I think my idea is not allowed in iOS.
At this moment I've a initialViewController (with almost no code cause it is used only to initialize some things of the server. It acts like a splash screen) and I've got a rootViewController which does the works. In the rootViewController I've got my Table with Table rows and it has the different arrays of data which are retrieved by a method that is called when the rootViewController is loaded.
I am programming without Storyboards, because I'd like coding and I want to understand how it works 'underground'. What is a good way to implement the tabbar if it is allowed what I want to do with it? I don't think a standard tab controller will work, because I am working with only one view.
Of course you can use the UITabBar solution. However this might be not very useful and this is not the idea behind the UITabBar. You can instantiate the same TableViewController vor each tab. In this case you can use the same class but you have up to the instances of this class when the user cycles through the tabs. This will be obvisously a waste of memory.
Your descriptions sounds like a UIToolBar with a UISegmetenControl in it might fit your needs better. You can also place it at the bottom of the screen and you will need just one TableViewController for your data.
UISegmentedControl is designed for switching between different data representations. It is also commonly used for switching between table datasources. But it often appears at the top of a view. Take a look at Top Charts tab of App Store app.
Tab bar is designed to present different views for each tab. Here are progress steps to achieve your result:
Use different instances of table view controller for each tab
Configure each instance for displaying one particular array, depending on tab position
Keep arrays in external (outside table view controller) storage, instances should have an access to it
It's better to preload data, while user is examining an active tab. Hence, load data outside of table view controllers, possibly in AppDelegate. Use notifications to update table view when data are available.

UITableViewController with SearchBar

I have tried both ways below to place SearchBar on UITableView.
TabBarController > UITableViewController(Put SearchBar)
TabBarController > UIViewController > UITableViewController(Put SearchBar)
When I try the second way, then it doesn't work.
(SearchBar cannot show on UITableViewController)
Can anyone tell me what happend?
Here is my xcode project file:
http://www2.zshares.net/tg14vowqzvaw
the usual way to do this would be to put the saerch bar in the header-section of the uitableview its supposed to search. you can do this using the
-tableview: viewForHeaderInSection:
method from the UITableViewDelegate-Protocol. his works in both TableViewControllers and regular ViewControllers that just have a TableView on them. see the mail app on the iphone for an example of this.
if you really NEED the search bar to be outside of the tableview, then you will have to use a regular view controller and just place the search bar in a view above/under the tableView.
other than that, i dont know what to tell you. And what is a TabbedViewController? Do you mean TabBarController? What does that have to do with search bars? Im kinda lacking the time to go through your project, so if you rephrase the question, maybe i can give a better answer?
EDIT-----------------------------------------------------
tableviewcontrollers will do that to you. basically, they will allow ONE tableview to be inside them at a time. also, this tableview WILL ALWAYS fill out the entire space available. Now, there is an exception to this that you cam make use of: Elements like a NavigationBar or a TabBar are allowed alongside the tableview, since they are required for navigation. So if you can put your stuff in one of these, its entirely fine. This my seem counterintuitive, since when do i want just a naked tableview on my screen? the answer is: more often than not. Tableviews are HIGHLY customizable using the UITAbleVIewDelegate-Protocol specified here:
http://developer.apple.com/library/ios/#documentation/uikit/reference/UITableViewDelegate_Protocol/Reference/Reference.html#//apple_ref/occ/intf/UITableViewDelegate
Do yourself a favor and read that doc, i almost guarantee that you will save time in the long run.
For Example: You know the contacts app on your iphone? If you go into the details of one specific contact, you will find a pertty sophisiticated presentation of the data, that will even go into editing mode if you tap edit. It has a header, multiple segments, and a footer.
Surprise: ALL OF THAT is just a single tableview in a tableviewcontroller, customized via the protocol. Let me repeat: you are wasting your own time if you try to do it any other way. tableviewcontrollers exist for a reason. usem them

searchResultsTableView takes entire screen on ipad

I am working on a app for the iPad which has a tableView on the left and a view on the right. We are not using the UISplitViewController.
I have been able to setup filtered results using the Search Display Controller and a search bar, but the search results take up the entire screen.
Ideally, I would like to have the search results only take up the same amount of screen as our tableView. Or, barring that, have a way to dismiss the search results when 'didSelectRowAtIndexPath' is activated.
I'm not sure what code I should post. I'm using the code from the Apple code sample: TableSearch.
on the comment below: something like this..?
[self.searchDisplayController.searchResultsTableView setFrame:myTableView.view];
By default, table views take up the whole screen, but there is nothing stopping you from setting their frame.
Just call -setFrame on the searchResultsTableView property of your search display controller.

Resources