I'm trying to create a custom UICollectionViewCell backed by a *.xib file.
However, when I try to add subviews to the cell, interface builder (as well as an actual instance of the cell inside the app) doesn't show them at all.
It doesn't matter whether I add in an UIView as a contentView or not, all subviews seem to be invisible.
This happens in Xcode 7.2 inside a tvOS project. Does anyone experience the same issue or can see what I'm missing?
Related
I am trying to setup an image view in my Main.Storyboard so that I can update it in my app extension. I am struggling to work out how to get the code to initialise the Image View. I feel so stupid for not being able to figure this out.
In Xcode, I am used to linking it by dragging the constructor (if that's what it's called) into the app code.
How is this accomplished in Xamarin?
Much thanks.
In the storyboard, select the UIImageView. Then in the properties window (on the right, usually) there is a Name property. That creates an outlet to your view controller class with UIImageView. You can access it in the ViewDidLoad method (that's the earliest it's guaranteed to be initialized) and setup the UIImageView however you need.
See this screenshot showing the Name property:
I often make use of views in interface builder that live outside of the viewcontroller hierarchy (see screen grab below for simple example).
Before upgrading to Xcode5 I could get this view to appear on the storyboard by writing an IBAction outlet and dragging a connection from the code to the view in the storyboard.
If you paused over the button for a moment it would flash and then open up as a view on the storyboard that is then a lot easier to work with.
Since upgrading this function no longer seems available. Has anyone found out how to get these views to appear on the storyboard?
Edit:
Using the temporary viewcontroller as described in this answer seems one approach, although fiddly since you need to move the UIView stack between viewcontrollers each time you want to edit the layout. Using a separate XIB is starting to seem like the sanest approach.
https://stackoverflow.com/a/13713385/1060154
Finally, we get this back in Xcode 7.
Hallelu!
Deployed project using UITableView for display of images.
Upgraded to xCode 4.5, suddenly my UITableView no longer scrolls.
This occurs both on the device and on the simulator with iOS 5.0 -> 6.0
Additionally, I have found that I can no longer set the number of minimum touches for the PanGestureRecognizer programmatically.
Other StackOverflow ticket
In fact, a Zombie analysis reveals that the recognizer has been released. This could definitely explain the above behavior. My attempt to set the recognizer is as follows and crashes.
UIPanGestureRecognizer* pgr = [imageTableView panGestureRecognizer];
[pgr setMinimumNumberOfTouches:2];
[pgr setMaximumNumberOfTouches:2];
Is anyone else seeing this issue?
I had a similar problem when moving to iOS6/XCode 4.5. It seems that the UIPanGestureRecognizer now steals touches from underlying UIScrollViews or UITableViews.
I found a work around for this in the post below. It's not the top rated answer, so I'll re-paste the content below as well:
iphone - UIGestureRecognizer prevents UITableView from scrolling in Xcode 4.5
I had the same issue: I used to drag my TabGestureRecognizer directly onto the storyboard instead of creating them through code. With iOS6 this now seems to break scrolling.
I prefer adding views, gestures, etc directly onto the storyboard instead of through code.
You can still do this but with two changes:
1) Referencing Outlet Collections
Right-click the GestureRecognizer which is visible to you within the scene's dock.
Clear the section Referencing Outlet Collections
2) Attach the GestureRecognizer to the related view through code
Create an outlet for your GestureRecognizer
Add the following line within the viewDidLoad method:
[self.tableView addGestureRecognizer:_tabGesture];
I have a UIViewController subclass that I created previously that had its controls laid out in a XIB file.
I'd like to use this view controller in a storyboard now, but it seems although I can indicate a view controller's classname in the storyboard, I can't tell it to load the XIB.
I'd rather not move everything from the XIB to the storyboard but keep it in its separate XIB.
How can I get this UIViewController in the storyboard to load my XIB?
Delete the View contained by the view controller in the storyboard.
Then provide the view by configuring a nib file with the same name
as the view controller class. For example if the view controller
class is called MyViewController, name your xib file
MyViewController.xib.
EDIT Note that Swift seed 5 started breaking this technique, because it mangles the name of the .xib file it's looking for. See my answer here for workarounds: https://stackoverflow.com/a/25539016/341994 Basically this name matching was broken in iOS 8, but then Apple repented and fixed it so that it works again in iOS 9.
I started an iPhone App with the Xcode template for UITabBarController, which created a couple of default UIViews (MainWindow, FirstView and SecondView).
The MainWindow xib shows the tabbar itself, which can be configured there.
FirstView and SecondView have an unselectable UITabBar anchored to the bottom, which is ostensibly to show the relationship to MainWindow.
Note that I've created many new views that are part of the main UITabBar and they work fine, but they don't show that UITabBar at the bottom in Interface Builder.
My question is, how does that work, and how can I create a new view such that it will show that unselectable UITabBar at the bottom?
What you're seeing is simply Interface Builder's "simulated metrics" and it shouldn't actually have any bearing on the app's behavior. But this is how you can change it: