EDIT
Thanks to @LeoNatan I have now got a complete working solution. If anyone finds this and would like the solution, it's available on GitHub .
Original Question
I'm trying to get iAds (or any other view for that matter, although it may be specific to ADBannerView
) to be displayed just above a UITabBar
. I've gone about a few different ways of doing this, but haven't come up with a solution that satifies the following:
UITableView
s insets correctly update The only solution I have so far that has worked has been to have my UITableView
inside a UIViewController
, and adding the UITableView
and ADBannerView
to the view
property of the UIViewController
. I moved away from this for 2 reasons:
UITableView
did not extend its edges below the bottom UITabBar
UITableViewController
, not UIViewController
I have a bannerView
property on my AppDelegate
and a shouldShowBannerView
property to decide whether or not to show the iAd, and share a single instance. The AppDelegate
then sends out notifications when iAds should be displayed or hidden (ie, when an iAd is loaded and when the user has paid to remove the iAds). The "base" of the code works as such:
func showiAds(animated: Bool) {
if !self.showingiAd {
let delegate = UIApplication.sharedApplication().delegate as AppDelegate
if let bannerView = delegate.bannerView {
println("Showing iAd")
self.showingiAd = true
if (bannerView.superview != self.view) {
bannerView.removeFromSuperview()
}
// let bannersSuperview = self.view.superview! // Bottom inset incorrect
let bannersSuperview = self.view // Banner is shown at the top screen. Crashes on iOS 7 (at bannersSuperview.layoutIfNeeded())
// let bannersSuperview = self.tableView // The is the same as self.view (duh)
// let bannersSuperview = self.tabBarController!.view // Bottom inset incorrect
// Added the view and the left/right constraints allow for the proper height
// to be returned when bannerView.frame.size.height is called (iOS 7 fix mainly)
bannersSuperview.addSubview(bannerView)
bannersSuperview.addConstraints([
NSLayoutConstraint(item: bannerView, attribute: .Left, relatedBy: .Equal, toItem: bannersSuperview, attribute: .Left, multiplier: 1, constant: 0),
NSLayoutConstraint(item: bannerView, attribute: .Right, relatedBy: .Equal, toItem: bannersSuperview, attribute: .Right, multiplier: 1, constant: 0),
])
bannersSuperview.layoutIfNeeded()
let bannerViewHeight = bannerView.frame.size.height
var offset: CGFloat = -self.bottomLayoutGuide.length
if (UIDevice.currentDevice().systemVersion as NSString).floatValue < 8 {
// Seems to be needed for some reason
offset -= bannerViewHeight
}
let bannerBottomConstraint = NSLayoutConstraint(item: bannerView, attribute: .Bottom, relatedBy: .Equal, toItem: bannersSuperview, attribute: .Bottom, multiplier: 1, constant: offset + bannerViewHeight)
// self.bannerBottomConstraint = bannerBottomConstraint
bannersSuperview.addConstraint(bannerBottomConstraint)
bannersSuperview.layoutSubviews()
// bannerSuperview.setNeedsLayout()
bannersSuperview.layoutIfNeeded()
// Previously, this values was the height of the banner view, so that it starts off screen.
// Setting this to 0 and then doing an animation makes it slide in from below
bannerBottomConstraint.constant = offset
bannersSuperview.setNeedsUpdateConstraints()
UIView.animateWithDuration(animated ? 10 : 0, animations: { () -> Void in
// Calling layoutIfNeeded here will animate the layout constraint cosntant change made above
bannersSuperview.layoutIfNeeded()
})
} else {
println("Cannot show iAd when bannerView is nil")
}
}
}
func hideiAds() {
if self.showingiAd {
self.showingiAd = false
let delegate = UIApplication.sharedApplication().delegate as AppDelegate
if let bannerView = delegate.bannerView {
if bannerView.superview == self.view {
bannerView.removeFromSuperview()
}
}
}
}
I then check in my viewWillAppear:
and viewDidDisappear:
methods if an iAds is/should be displayed and calling showiAds(false)
and hideiAds()
as required.
No matter what I do, I don't seem to be able to get it to work. A couple of other things I've tried but scrapped the code for:
UITabBarController
, which then alerts the UITableViewController
s that the iAd was shown/hidden. Modifying the content/scroll indicator insets did not work well, and was ofter reset by the UITableViewController
to fit above/below the navigation/tab bar. viewDidLayoutSubviews
, but this seems very costly? ADBannerView
to some view from within the UITableViewController
, but it would crash on iOS 7 (something about tableView must call super -layoutSubviews) EDIT
I have created a UIViewController
subclass with the intent of using it to house UITableViewControllers
via a Container View
. Here is what I have so far, followed by a couple of issues:
class AdvertContainerViewController: UIViewController {
var tableViewController: UITableViewController?
var showingiAd = false
var bannerBottomConstraint: NSLayoutConstraint?
private var bannerTopOffset: CGFloat {
get {
var offset: CGFloat = 0
if let tabBar = self.tabBarController?.tabBar {
offset -= CGRectGetHeight(tabBar.frame)
}
if let bannerView = AppDelegate.instance.bannerView {
let bannerViewHeight = bannerView.frame.size.height
offset -= bannerViewHeight
}
return offset
}
}
override func viewDidLoad() {
super.viewDidLoad()
if self.childViewControllers.count > 0 {
if let tableViewController = self.childViewControllers[0] as? UITableViewController {
self.tableViewController = tableViewController
tableViewController.automaticallyAdjustsScrollViewInsets = false
self.navigationItem.title = tableViewController.navigationItem.title
}
}
}
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
if AppDelegate.instance.shouldShowBannerView {
self.showiAds(false)
}
}
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)
let delegate = AppDelegate.instance
NSNotificationCenter.defaultCenter().addObserver(self, selector: "showiAds", name: "BannerViewDidLoadAd", object: delegate)
NSNotificationCenter.defaultCenter().addObserver(self, selector: "hideiAds", name: "RemoveBannerAds", object: delegate)
}
override func viewDidDisappear(animated: Bool) {
super.viewDidDisappear(animated)
if self.showingiAd {
self.hideiAds()
}
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
println("View did layout subviews")
if self.showingiAd {
if let bannerView = AppDelegate.instance.bannerView {
let bannerViewHeight = CGRectGetHeight(bannerView.frame)
if let bottomConstraint = self.bannerBottomConstraint {
let bannerTopOffset = self.bottomLayoutGuide.length + bannerViewHeight
if bottomConstraint.constant != bannerTopOffset {
println("Setting banner top offset to \(bannerTopOffset)")
bottomConstraint.constant = -bannerTopOffset
bannerView.superview?.setNeedsUpdateConstraints()
bannerView.superview?.updateConstraintsIfNeeded()
}
}
println("Bottom layout guide is \(self.bottomLayoutGuide.length)")
let insets = UIEdgeInsetsMake(self.topLayoutGuide.length, 0, self.bottomLayoutGuide.length + bannerViewHeight, 0)
self.updateTableViewInsetsIfRequired(insets)
}
}
}
private func updateTableViewInsetsIfRequired(insets: UIEdgeInsets) {
if let tableView = self.tableViewController?.tableView {
if !UIEdgeInsetsEqualToEdgeInsets(tableView.contentInset, insets) {
println("Updating content insets to \(insets.top), \(insets.bottom)")
tableView.contentInset = insets
}
if !UIEdgeInsetsEqualToEdgeInsets(tableView.scrollIndicatorInsets, insets) {
println("Updating scroll insets to \(insets.top), \(insets.bottom)")
tableView.scrollIndicatorInsets = insets
}
}
}
func showiAds() {
self.showiAds(true)
// self.showiAds(false)
}
func showiAds(animated: Bool) {
if !self.showingiAd {
let delegate = UIApplication.sharedApplication().delegate as AppDelegate
if let bannerView = delegate.bannerView {
println("Showing iAd")
self.showingiAd = true
if (bannerView.superview != self.view) {
bannerView.removeFromSuperview()
}
let bannersSuperview = self.view.superview!
// Added the view and the left/right constraints allow for the proper height
// to be returned when bannerView.frame.size.height is called (iOS 7 fix mainly)
bannersSuperview.addSubview(bannerView)
bannersSuperview.addConstraints([
NSLayoutConstraint(item: bannerView, attribute: .Left, relatedBy: .Equal, toItem: bannersSuperview, attribute: .Left, multiplier: 1, constant: 0),
NSLayoutConstraint(item: bannerView, attribute: .Right, relatedBy: .Equal, toItem: bannersSuperview, attribute: .Right, multiplier: 1, constant: 0),
])
bannersSuperview.layoutIfNeeded()
let bannerBottomConstraint = NSLayoutConstraint(item: bannerView, attribute: .Top, relatedBy: .Equal, toItem: bannersSuperview, attribute: .Bottom, multiplier: 1, constant: 0)
self.bannerBottomConstraint = bannerBottomConstraint
bannersSuperview.addConstraint(bannerBottomConstraint)
bannersSuperview.layoutSubviews()
bannersSuperview.layoutIfNeeded()
let topInset = self.navigationController?.navigationBar.frame.size.height ?? 0
let insets = UIEdgeInsetsMake(topInset, 0, -self.bannerTopOffset, 0)
// Previously, this values was the height of the banner view, so that it starts off screen.
// Setting this to 0 and then doing an animation makes it slide in from below
bannerBottomConstraint.constant = self.bannerTopOffset
bannersSuperview.setNeedsUpdateConstraints()
UIView.animateWithDuration(animated ? 0.5 : 0, animations: { () -> Void in
// Calling layoutIfNeeded here will animate the layout constraint cosntant change made above
self.updateTableViewInsetsIfRequired(insets)
bannersSuperview.layoutIfNeeded()
})
} else {
println("Cannot show iAd when bannerView is nil")
}
}
}
func hideiAds() {
if self.showingiAd {
self.showingiAd = false
let delegate = UIApplication.sharedApplication().delegate as AppDelegate
if let bannerView = delegate.bannerView {
if bannerView.superview == self.view {
bannerView.removeFromSuperview()
}
}
}
}
}
Issues so far:
self.view
as the superview causes a crash on rotate Auto Layout still required after sending -viewDidLayoutSubviews to the view controller. Gathered.AdvertContainerViewController's implementation needs to send -layoutSubviews to the view to invoke auto layout.
Auto Layout still required after sending -viewDidLayoutSubviews to the view controller. Gathered.AdvertContainerViewController's implementation needs to send -layoutSubviews to the view to invoke auto layout.
At the request of Leo Natan I have create a repo on GitHub that I will update with any attempts I make, and explain issues here. Currently, the issues are as follows:
First Tab:
Second Tab:
The best solution is to use view controller containment. Use a view controller subclass that will house both the ad view and the table view controller's view, and add the table view controller as a child of the container view controller. This should take care of content insets correctly. On each layout of the container controller's view, position the table controller view hierarchy correctly after positioning the ad view. If you wish to hide the ad view, simply hide or remove it from the container hierarchy, and extend the table controller's view hierarchy fully. When working with hierarchies, remember to always use the table controller's view
and not the tableView
directly.
My answer was adapted into the following GitHub repo: https://github.com/JosephDuffy/iAdContainer
The best that is that you download the AD suite from Apple site, there are tabbar controller and navigation controller containment example.
Apple provides you an abstract view controller that can handle by itself the ADBanner flow without interrupting its presentation, maximizing the showing time.
You can use this https://developer.apple.com/library/ios/samplecode/iAdSuite/Introduction/Intro.html apple sample and modified it according to your needs. Such as bool variable to take care of when iAds is shown or not. There in code you can see BannerViewController class that contains all the logic. You can also write ADmob code there to use.
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