My project is entire in Storyboard, I have a UITableViewController embed in a NavigationController and on each cell I have a button to Share the Notice.
#IBAction func shareSheetButtonFeed(sender: AnyObject) {
let btnPos: CGPoint = sender.convertPoint(CGPointZero, toView: self.tableView)
let indexPath: NSIndexPath = self.tableView.indexPathForRowAtPoint(btnPos)!
passaValor = Int(indexPath.row)
let printtestess = (objects?[passaValor] as! PFObject)
let textToShare: AnyObject = (printtestess.objectForKey("subject")! as! String) + " - Cheque agora em:"
let myWebsite = NSURL(string:"http://www.mysite.com.br/")
let img: UIImage = UIImage(named: "myLogo-1024x1024")!
guard let url = myWebsite else {
print("nothing found")
return
}
self.navigationController?.setNavigationBarHidden(false, animated: true)
let shareItems:Array = [img, textToShare, url]
let activityViewController:UIActivityViewController = UIActivityViewController(activityItems: shareItems, applicationActivities: nil)
activityViewController.excludedActivityTypes = [UIActivityTypePrint, UIActivityTypePostToWeibo, UIActivityTypeCopyToPasteboard, UIActivityTypeAddToReadingList, UIActivityTypePostToVimeo]
self.presentViewController(activityViewController, animated: true, completion: nil)
}
The problem is, when I click in the button the shareSheet is presented, after I choose the Social Network, like Twitter or Facebook my previous NavigationBar dissapear.
I tried to solve the problem using this line, inside the button, and when I click again in the button the navBar reappear:
self.navigationController?.setNavigationBarHidden(false, animated: true)
So I tried to put this line inside the ViewWillAppear, but it did not work.
Obs: I'm using Auto-Layout
Thanks.
Try waiting until the share sheet is closed to show the navigation bar. To do so, set the completionWithItemsHandler property on UIActivityViewController.
activityViewController.completionWithItemsHandler = { _ in
self.navigationController?.setNavigationBarHidden(false, animated: true)
}
Related
I have an iOS App similar to Photos App from Apple, which also has a ‘Share’ button for sharing photo, which worked well before. The code is as follows (for simplicity, I changed the sharing content to a string):
#objc func shareButtonTapped()
{
let vc = UIActivityViewController(activityItems: ["www.apple.com"], applicationActivities: nil);
if let pop = vc.popoverPresentationController
{
pop.sourceView = someView;
pop.sourceRect = shareButton.frame;
}
self.present(vc, animated: true, completion: nil);
}
But when my iPhone was upgraded to iOS 15, the UIActivityViewController that is showed up was invisible. I attach an operation video:
enter link description here
Observe carefully, in fact, UIActivityViewController has a pop-up, but it has become almost transparent.
Then, I added a statement to deliberately set the background color of its view:
#objc func shareButtonTapped()
{
let vc = UIActivityViewController(activityItems: ["www.apple.com"], applicationActivities: nil);
vc.view.backgroundColor = UIColor.systemBackground;
if let pop = vc.popoverPresentationController
{
pop.sourceView = someView;
pop.sourceRect = shareButton.frame;
}
self.present(vc, animated: true, completion: nil);
}
The operation video is as follows:
enter link description here
This code is very simple and very standard. I don't know why this happens?
Hope someone can help. Thanks in advance!
In fact, I define the shareButton within a class derived from UICollectionViewCell:
class AssetPreviewCell: UICollectionViewCell, UIScrollViewDelegate, PHLiveViewDelegate, UINavigationControllerDelegate
{
//....
}
And the complete code is:
#objc func shareButtonTapped()
{
guard let svc = self.findViewController() else { return }
let vc = UIActivityViewController(activityItems: ["www.apple.com"], applicationActivities: nil);
if let pop = vc.popoverPresentationController
{
pop.sourceView = someView;
pop.sourceRect = shareButton.frame;
}
svc.present(vc, animated: true, completion: nil);
}
The func findViewController() is the method from enter link description here
Edit:
And I have an 'Albums' button next to the 'Share' button. When the 'Albums' button is tapped, I present another view controller for add current photo to albums or remove current photo from albums according user select or deselect. This view controller is presented quiet normally. The operation video is on enter link description here . So I think the problem is just from UIActivityViewController or something else.
I find the answer. The problem is caused because I overrided the viewDidLoad function of UIActivityViewController for some reason:
override open func viewDidLoad()
{
super.viewDidLoad();
a_var += 1;
}
This cause problem on iOS15 while works well on iOS14 or iOS13.
Now I override the viewDidAppear(_) instead and the problem dissappears:
override open func viewDidAppear(_ animated: Bool)
{
super.viewDidAppear(animated);
a_var += 1;
}
ps: #mczmma is another account of mine. This account is restricted to ask question. I don't know the reason.
What worked for me in my use case was just to change the sourceView from
let shareAll = [textView.text]
let activityViewController = UIActivityViewController(activityItems: shareAll, applicationActivities: nil)
activityViewController.popoverPresentationController?.sourceView = self.view
self.present(activityViewController, animated: true, completion: nil)
to
let shareAll = [textView.text]
let activityViewController = UIActivityViewController(activityItems: shareAll, applicationActivities: nil)
activityViewController.popoverPresentationController?.sourceView = textView
self.present(activityViewController, animated: true, completion: nil)
So that on iPad the share shows above the textView, and it just works normally on iPhone.
I am having a little problem with a segue in my application.
When I try to push a segue so that it has a navbar it shows up correctly in the storyboard but not when I try it on my iPhone.
This is an overview of a couple of view controllers where my problem lays.
This is supposed to be the segue, so you can see that it has a navigation bar and is correctly positioned on the storyboard.
This is the view on the iPhone. No navigation bar or nothing. I tried everything but can't seem to find a solution to this problem.
Does anyone what the problem could be?
A little extra side information:
I don't know if may have something to do with the problem but the navigation view controller is not always present only when the user is logged in the app. this is decided on a log in screen if the user is not logged in the user will see a normal login screen. Else it will go to navigation view controller with a view did appear function and self.present.
Here is the code that handles that action.
// Sees if the user is logged, If yes --> go to the account detail page else go to the account view.
override func viewDidAppear(_ animated: Bool) {
super.viewWillAppear(animated)
if let data = UserDefaults.standard.data(forKey: "User") {
do {
// Create JSON Decoder
let decoder = JSONDecoder()
// Decode Note
_ = try decoder.decode(User.self, from: data)
guard let loginVC = UIStoryboard.init(name: "Main", bundle: Bundle.main).instantiateViewController(withIdentifier:
"AccountDetailViewController") as? AccountDetailViewController else { return }
loginVC.modalPresentationStyle = .overCurrentContext
self.present(loginVC, animated: false, completion: {})
} catch {
print("Unable to Decode Note (\(error))")
}
}
}
You should push view controller instead of present. Please check this article to know more about Pushing, Popping, Presenting, & Dismissing ViewControllers
You can push AccountDetailViewController without segues. And you don't need to call performSegue(withIdentifier:) into tableView's didSelect function.
Remove segue from Interface Builder
let navigator = UINavigationController()
guard let loginVC = UIStoryboard(name: "Main", bundle: Bundle.main).instantiateViewController(withIdentifier:
"AccountDetailViewController") as? AccountDetailViewController else { return }
loginVC.modalPresentationStyle = .overCurrentContext
navigator.pushViewController(loginVC, animated: true)
After succesful login, you are presenting AccountDetailViewController without adding it in a navigation controller. I would suggest you to use these extensions that i created.
extension UIViewController {
func pushVC(vcName : String) {
let vc = UIStoryboard.init(name: "Main", bundle: Bundle.main).instantiateViewController(withIdentifier: vcName)
vc.hidesBottomBarWhenPushed = true
self.navigationController?.pushViewController(vc, animated: true)
}
func pushVC(storyboardName : String, vcName : String) {
let vc = UIStoryboard.init(name: storyboardName, bundle: Bundle.main).instantiateViewController(withIdentifier: vcName)
vc.hidesBottomBarWhenPushed = true
self.navigationController?.pushViewController(vc, animated: true)
}
func popVC() {
self.navigationController?.popViewController(animated: true)
}
func makeRootVC(storyBoardName : String, vcName : String) {
let appDelegate = UIApplication.shared.delegate as! AppDelegate
let vc = UIStoryboard(name: storyBoardName, bundle: Bundle.main).instantiateViewController(withIdentifier: vcName)
let nav = UINavigationController(rootViewController: vc)
nav.navigationBar.isHidden = true
appDelegate.window?.rootViewController = nav // If using XCode 11 and above, copy var window : UIWindow? in your appDelegate file
let options: UIView.AnimationOptions = .transitionCrossDissolve
let duration: TimeInterval = 0.6
UIView.transition(with: appDelegate.window!, duration: duration, options: options, animations: {}, completion: nil)
}
}
Now in your case, when a user logs in, you should change your root view controller to AccountDetailViewController. So first, copy paste the above extension anywhere in your file and then use it like this:
// Sees if the user is logged, If yes --> go to the account detail page else go to the account view.
override func viewDidAppear(_ animated: Bool) {
super.viewWillAppear(animated)
if let data = UserDefaults.standard.data(forKey: "User") {
do {
// Create JSON Decoder
let decoder = JSONDecoder()
// Decode Note
_ = try decoder.decode(User.self, from: data)
self.makeRootVC(storyBoardName : "Main", vcName :"AccountDetailViewController")
} catch {
print("Unable to Decode Note (\(error))")
}
}
}
I use this code to open a new ViewController:
// Get a random next post
#IBAction func buttonNextPostTapped(_ sender: UIButton) {
let postNumber = Int.random(in: 0 ..< postIds.count)
let postId = postIds[postNumber]
PostApi.shared.getPost(postId: postId) { (post) in
let storyBoard : UIStoryboard = UIStoryboard(name: "MainApplication", bundle: nil)
let nextViewController = storyBoard.instantiateViewController(withIdentifier: "PostsViewController") as! PostsViewController
nextViewController.post = post
nextViewController.isFromRandom = true
self.present(nextViewController, animated: true, completion: {})
}
}
This code will open the same ViewController with different data. It works, however, the "old" ViewControllers will stack in the background. So if I open 10 new ViewControllers, I have 10 VC in the background.
How can I present a new ViewController, and dismiss the "old" one?
Using setViewControllers function from UINavigationController is the best way.
func setViewControllers(_ viewControllers: [UIViewController], animated: Bool)
And you can remove whichever controller you want to from stack like
if var navigationControllersArray:Array = (self.navigationController?.viewControllers) {
navigationControllersArray.remove(at: navigationControllersArray.count-2)
self.navigationController?.viewControllers = navigationControllersArray
}
I am trying to share both image and text in swift. but when i choose to share via facebook, messenger or whatsapp it only gives text (image is not shared). I am using UIActivityViewController for sharing.
here is my code:
func displayShareSheet(latitude:NSString?, longitude:NSString?, image:UIImage?, address:NSString? ) {
let activityViewController = UIActivityViewController(activityItems: [(latitude as NSString?)!, (longitude as NSString?)!, (image as UIImage?)!, (address as NSString?)!], applicationActivities: nil)
presentViewController(activityViewController, animated: true, completion: {}
)
}
Below is UIActivityViewController code is working for me. also attached screen shot for both the methods.
func shareImage() {
let img = UIImage(named: "SoSampleImage")
let messageStr = "Ketan SO"
let activityViewController:UIActivityViewController = UIActivityViewController(activityItems: [img!, messageStr], applicationActivities: nil)
activityViewController.excludedActivityTypes = [UIActivityTypePrint, UIActivityTypePostToWeibo, UIActivityTypeCopyToPasteboard, UIActivityTypeAddToReadingList, UIActivityTypePostToVimeo]
self.presentViewController(activityViewController, animated: true, completion: nil)
}
Screen shot for UIActivityViewController example :
Alternative Using SLComposeViewController :
func share(){
let img = UIImage(named: "SoSampleImage")
let composeSheet = SLComposeViewController(forServiceType: SLServiceTypeFacebook)
composeSheet.setInitialText("Hello, Ketan!")
composeSheet.addImage(img)
self.presentViewController(composeSheet, animated: true, completion: nil)
}
Screen shot for SLComposeViewController example :
Hope it will help you..
Do let me know if you have any query.
Try this This is working for me!!!
#IBAction func btnExport(sender: AnyObject)
{
print("Export")
let someText:String = "Hello want to share text also"
let objectsToShare:UIImage = self.imgView.image!
let sharedObjects:[AnyObject] = [objectsToShare,someText]
let activityViewController = UIActivityViewController(activityItems : sharedObjects, applicationActivities: nil)
activityViewController.popoverPresentationController?.sourceView = self.view
activityViewController.excludedActivityTypes = [ UIActivityTypeAirDrop, UIActivityTypePostToFacebook,UIActivityTypePostToTwitter]
self.presentViewController(activityViewController, animated: true, completion: nil)
}
I achieve this with the help of VisualActivityViewController which is present in this GitHub repository
It gives me a nice, custom view as well--one that shows the user both the text and image that the user is going to share.
When a UIActivityViewController is called on the iPhone in this app, it works perfectly, but when called on a iPad, the app crashes. Below is the code I used:
func shareButtonPress() {
//when the share button is pressed, default share phrase is added, cropped image of highscore is added
var sharingItems = [AnyObject]()
var shareButtonHighscore = NSUserDefaults.standardUserDefaults().objectForKey("highscore") as Int!
sharingItems.append("Just hit \(shareButtonHighscore)! Beat it! #Swath")
UIGraphicsBeginImageContextWithOptions(UIScreen.mainScreen().bounds.size, false, 0);
self.view.drawViewHierarchyInRect(view.bounds, afterScreenUpdates: true)
var image:UIImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
sharingItems.append(image)
let activityViewController = UIActivityViewController(activityItems: sharingItems, applicationActivities: nil)
var barButtonItem: UIBarButtonItem! = UIBarButtonItem()
activityViewController.excludedActivityTypes = [UIActivityTypeCopyToPasteboard,UIActivityTypeAirDrop,UIActivityTypeAddToReadingList,UIActivityTypeAssignToContact,UIActivityTypePostToTencentWeibo,UIActivityTypePostToVimeo,UIActivityTypePrint,UIActivityTypeSaveToCameraRoll,UIActivityTypePostToWeibo]
self.presentViewController(activityViewController, animated: true, completion: nil)
}
As you can see, I'm programming in Swift, in the SpriteKit Framework, and I don't understand why the app is crashing.
I'm receiving this error:
Terminating app due to uncaught exception 'NSGenericException', reason: 'UIPopoverPresentationController (<_UIAlertControllerActionSheetRegularPresentationController: 0x7fc7a874bd90>) should have a non-nil sourceView or barButtonItem set before the presentation occurs.'
What can I do to fix this problem?
Before presenting the UIActivityViewController, add in this line of code:
activityViewController.popoverPresentationController?.sourceView = self.view
This way, the view controller knows in which frame of the GameViewController to appear in.
If you read the error it says how to fix it, you need to set the barButtonItem or sourceView from which to present the popover from, in your case:
func shareButtonPress(pressedButton: UIBarButtonItem) {
...
activityViewController.popoverPresentationController.barButtonItem = pressedButton
self.presentViewController(activityViewController, animated: true, completion: nil)
}
Swift 5:
Check if the device is iPhone or iPad and based on that add a sourceView and present the activityController
let activity = UIActivityViewController(activityItems: [self], applicationActivities: nil)
if UIDevice.current.userInterfaceIdiom == .phone {
UIApplication.topViewController?.present(activity, animated: true, completion: nil)
} else {
activity.popoverPresentationController?.sourceView = UIApplication.topViewController!.view
UIApplication.topViewController?.present(activity, animated: true, completion: nil)
}
There are two option, the action came from a UIBarButtonitem or UIButton that is a UIView.
func shareButtonPress() {
...
if let actv = activityViewController.popoverPresentationController {
actv.barButtonItem = someBarButton // if it is a UIBarButtonItem
// Or if it is a view you can get the view rect
actv.sourceView = someView
// actv.sourceRect = someView.frame // you can also specify the CGRect
}
self.presentViewController(activityViewController, animated: true, completion: nil)
}
You may have to add a sender to your function like func shareButtonPress(sender: UIBarButtonItem) or func shareButtonPress(sender: UIButton)
I added for Swift 3:
activityViewController.popoverPresentationController?.sourceView = self.view
fixed my issue.