I am looking at Apple's Date Cell (Date Cell Link) example project and I have a question about the Scene Dock in MyTableViewController. How come there are items extra items in the scene (Like Picker and Done) that are next to First Responder, Exit, and My Table View Controller? How can this be done? Also, how is this helpful?
This image shows the Scene Dock that I am referring to. Don't mind the titles, I renamed the project.
This image shows the Scene Outline for MyTableViewController, where the Picker and Done Button are shown next to the My Table View Controller, First Responder, and Exit and not within My Table View Controller.
This image shows an expanded outline for My Table View Controller where the Picker object is found also. But not Done Button is nowhere to be found inside My Table View Controller.
This image shows the code to connect to Picker and Done Button There is nothing special to this.
When I delete UIDatePicker in the scene of the controller (not in the cell), the inline DatePicker still works.
I think this sample is meant to support iOS 6.1 or earlier, to reveal the UIDatePicker as an external slide-in view, so it needs to be in the controller for IBOutlet connection.
Hope this will help.
Normally, the MyTableViewController should not be of type UITableViewController but its superclass UIViewController. This is normally necessary because UITableViewController has by definition its main view property set to the table view. It is then difficult to place other views into this view.
With a UIViewController, however, you can add any number of views. This is necessary in this case to accommodate the button and picker. The table view controller functionality can still be achieved by manually adding the UITableViewDataSource and UITableViewDelegate protocols and overriding the appropriate methods.
However, Apple here shows that it is possible by placing the other views on the same level as the main view, the table view. This is admittedly quite confusing. I usually prefer adding non-standard views as subviews to the view of a plain UIViewController.
You can drag things like picker views from the library to the scene dock to add them there.
As to the utility of doing this, I have no idea what that would be.
In this case I think that the picker and done button are left over from the writers of the code experimenting with ideas and forgetting to delete them. To verify that just delete the picker view and done button and see if everything still works.
Related
I am working on a swift project in Xcode right now and one of my view controllers is a UITableViewController. I used swift to alter the size of the table view in the controller so that it does not fill up the entire screen. However, I want to set a background image for the entire view controller which I am unable to do since XCode is not letting me add an image view between the table view controller and the table view. Is there any way to do it using swift? Thank you.
I think I can help out.
If you're using Apple's UITableViewController - does that mean you altered the tableView's height in the storyboard? I think a better solution is to just use a regular UIViewController, add a tableView with whatever height you want it inside a UIViewController's view.
Often times I would recommend steering away from using Apple's custom things because you lose flexibility. Just make your own custom thing instead!
UIViewController > View > TableView & UIImageView
Make sure your tableview has a clear background!
I'm trying to present a popover over a pin I added to a MKMapView. I added a UIViewController to my storyboard, and dragged a segue from the MKMapView in one view controller to the viewController I want to show in my popover and selected popover. I get the error:
Popover segue with no anchor
In IB, I see "Drag to select an anchor", but when I try dragging it anywhere within the first viewController that has the MKMapView in it, nothing gets selected. I'm not sure where to go from here and if popover's from a view that is created dynamically can be used to present a popover with Storyboards. I know I can do it in code, but then I have to copy and paste my setters in prepareForSegue:. Thoughts? Thanks.
You need to make a custom annotation view. This will look like a popover view but it is actually different. A great tutorial on this can be found here: http://www.raywenderlich.com/30001/overlay-images-and-overlay-views-with-mapkit-tutorial
Essentially, you need to go NEW->NEW FILE-> the first option on the top left for OBJECTIVE C CLASS-> Name it whatever you want, I recommend CustomAnnotationView, and make it part of NSObject (rather than the default UIViewController)->follow the instructions on the above listed tutorial. If that tutorial does not work for you then you can search "custom map annotation" and many others will pop up. Apple even has a couple good (though outdated) sample projects which due this, such as a weather app and a callouts app with callouts for three locations in San Francisco.
I have a UITableView has a subview of a UIView and I've added a toolbar on top of the UITableView so it should look like this:
However when I actually run it, it looks like this:
So for some reason the UIToolBar isn't showing up. I really don't know why, is anybody able to figure this one out? Thanks in advance.
EDIT: I've changed the simulated metrics like suggested and it still does not show up:
EDIT2: Here is a list of objects as requested by Raixer.
Alright. I have a similar setup in my app so I will show you what I did.
I setup a tab bar controller with navigation controllers in each tab (this gives me the navigation bar automatically that is why I use it). If you notice the View on the first tab is being loaded from another nib (that is what I am assuming you are doing). I did this by changing the view's class to my own view controller and then setting the name of the NIB file to load in the Inspector like this:
(source: minus.com)
Then in my other nib file I only have this:
I hope this helps.
That's because you configured your nib file without counting with the height of the Tab bar.
The toolbar's height is 49 pixels. So when the view appears all your elements are moved 49 pixels up.
You should got to IB, open your View, go to Attributes Inspector, and in simulated metrics select Tab bar for Bottom Bar.
I doubt you will succeed with this approch. UITableViewController is very picky about adding subviews to its UITableView. However, you can have your UITableView handled by a standard UIViewController (just let IB point to a custom class inheritng from UIViewController). Add the table view to the controller's view as a subview and add the toolbar to the outer view.
Then you should be able to add subviews. UITableViewController gives you some convinience and functionality. If you can live without, UIViewController is no disadvantage. If you can't, you'll have to implement it yourself.
Another alternative to get the toolbar: put your table into a UINavigationController. That one comes with a toolbar (on top).
I have a main view with a UINavigationController and a subview (both added through interface builder). I have a UIBarButtonItem in the navigation toolbar. When that button is clicked, I want a popover view to come up (with a table format) with options for different subviews to choose from. When a user chooses one of the subviews (by clicking a cell), the popover should fade away and the subview should change to the user's chosen view.
Those view options should be loaded from separate xib files.
I know it's a relatively complicated question, but what is the best way to do this?
I don't necessarily need code, but that would be helpful. Thanks guys!
Check this tutorial about the popOvers:
http://mobiforge.com/designing/story/using-popoverview-ipad-app-development
Are you looking for something similar to this?
Checkout the – loadNibNamed:owner:options: of NSBundle(UINibLoadingAdditions). Your view will be the first index object of the returned array commonly.
first time asker, long-time lurker.
I am trying to create an iPhone view that has a date/time picker on the bottom half of the screen, and a grouped, single-section, four-row table view on the top half of the screen (almost identical to the one Apple shows in Fig. 2-4 of their View Controller Programming Guide (but then never goes on to explain).
Conceptually, I think I understand that what I need is a main view with a pair of subviews - one for the picker, and one for the table view. I'm pretty sure I can make the picker function once I have it on-screen, and I'm pretty sure I can make the table view function too. What I can't for the life of me figure out is how, programmatically speaking, to get the two views onto the screen simultaneously. I can lay it out perfectly in Interface Builder, but then it all goes to hell when I switch to Xcode...the view appears with the picker, but no table view.
Thanks, in advance, for any help you can offer.
the view appears with the picker, but no table view.
If the table view isn't assigned a data source, then it has nowhere from which to populate itself, and so it may give you the appearance of "not being there".
Have you created a view controller for this view? Is it a subclass of UITableViewController, or does it at least implement the UITableViewDelegate/UITableViewDataSource protocols? Is it set as the File's Owner in the .xib? And has it been assigned (using the connections) as your table view's delegate and dataSource?
In your .xib, are both the UITableView and the UIPickerView subviews of a top-level UIView, which is connected to your view controller's view property (i.e. for the File's Owner)?
UIView
+
|
+---UITableView
|
+---UIPickerView