How to navigate Share Extension to host app in Swift? - ios

Question

How to navigate Share Extension to host app in Swift after getting URL from ShareExtension?
import UIKit
import Social
import MobileCoreServices
class ShareViewController: UIViewController {
let sharedKey = "shareappKey"
override func viewDidLoad() {
super.viewDidLoad()
self.navigationItem.title = "Picked URL"
getURL()
}
#IBAction func nextAction(_ sender: Any) {
self.redirectToHostApp()
}
#IBAction func cancelAction(_ sender: Any) {
self.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
}
func redirectToHostApp() {
let url = URL(string: "SelectedURL:\(sharedKey)")
var responder = self as UIResponder?
let selectorOpenURL = sel_registerName("openURL:")
while (responder != nil) {
if (responder?.responds(to: selectorOpenURL))! {
let _ = responder?.perform(selectorOpenURL, with: url)
}
responder = responder!.next
}
self.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
}
func getURL() {
if let item = extensionContext?.inputItems.first as? NSExtensionItem {
if let itemProvider = item.attachments?.first {
if itemProvider.hasItemConformingToTypeIdentifier("public.url") {
itemProvider.loadItem(forTypeIdentifier: "public.url", options: nil, completionHandler: { (url, error) -> Void in
if let error = error {
print("error :-", error)
}
if (url as? NSURL) != nil {
// send url to server to share the link
do {
if (url as? URL) != nil {
// do what you want to do with shareURL
print("Selected URL :- ", url as Any)
print(url as Any)
let dict: [String : Any] = ["imgData" : url as Any, "name" : "Added" as Any]
print(dict)
let userDefault = UserDefaults.init(suiteName: "group.com.abcd.shareapp")
userDefault?.set(dict, forKey: self.sharedKey)
userDefault?.synchronize()
// Here I got Struct
}
}catch let err{
print(err)
}
}
self.extensionContext?.completeRequest(returningItems: [], completionHandler:nil)
})
}
}
}
}
}
// Host App
import UIKit
class ViewController: UIViewController {
var urlString = String()
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
let userDefault = UserDefaults.standard
userDefault.addSuite(named: "group.com.abcd.shareapp")
if let dict = userDefault.value(forKey: "img") as? NSDictionary{
let data = dict.value(forKey: "imgData") as! Data
let str = dict.value(forKey: "name") as! String
print("Data is :- ", data)
print("Str is :- ", str)
userDefault.removeObject(forKey: "img")
userDefault.synchronize()
// Here i need to get that URL from Share Extention
}
}
}
Error
2019-07-15 22:01:15.045361+0530 LearingAppShare[3183:73775] [User
Defaults] Attempt to set a non-property-list object {
imgData = "https://m.jagran.com/lite/cricket/headlines-sachin-tendulkar-son-arjun-tendulkar-picked-for-rs-5-lakh-for-t20-mumbai-league-19192257.html";
name = Added; } as an NSUserDefaults/CFPreferences value for key URLKey 2019-07-15 22:01:15.047424+0530 LearingAppShare[3183:73775]
Terminating app due to uncaught exception
'NSInvalidArgumentException', reason: 'Attempt to insert non-property
list object {
imgData = "https://m.jagran.com/lite/cricket/headlines-sachin-tendulkar-son-arjun-tendulkar-picked-for-rs-5-lakh-for-t20-mumbai-league-19192257.html";
name = Added; } for key URLKey'

Answer 1

I have done answer on own Question.
You can store in dictionary.
But UserDefaults can't save dictionary with custom data types like Image or URL .
So you need to convert dictionary to Data first before saving in defaults
import UIKit
import Social
import MobileCoreServices
class ShareViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
self.navigationItem.title = "Picked URL"
getURL()
}
#IBAction func nextAction(_ sender: Any) {
self.redirectToHostApp()
}
#IBAction func cancelAction(_ sender: Any) {
self.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
}
func redirectToHostApp() {
let url = URL(string: "YourOwnURLscheme:\(sharedKey)")
var responder = self as UIResponder?
let selectorOpenURL = sel_registerName("openURL:")
while (responder != nil) {
if (responder?.responds(to: selectorOpenURL))! {
let _ = responder?.perform(selectorOpenURL, with: url)
}
responder = responder!.next
}
self.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
}
func getURL() {
if let item = extensionContext?.inputItems.first as? NSExtensionItem {
if let itemProvider = item.attachments?.first {
if itemProvider.hasItemConformingToTypeIdentifier("public.url") {
itemProvider.loadItem(forTypeIdentifier: "public.url", options: nil, completionHandler: { (url, error) -> Void in
if let error = error {
print("error :-", error)
}
if (url as? NSURL) != nil {
// send url to server to share the link
do {
var urlData: Data!
if let url = url as? URL{
urlData = try Data(contentsOf: url)
}
let dict: [String : Any] = ["urlData" : urlData as Any, "name" : self.contentText as Any]
print(dict)
let userDefault = UserDefaults(suiteName: "group.com.abcd.sharecontent1")
userDefault?.set(dict, forKey: "storedURLData")
userDefault?.synchronize()
}catch let err{
print(err)
}
}
})
}
}
}
}
}
// Host App
import UIKit
class ViewController: UIViewController {
#IBOutlet var imgView: UIImageView!
#IBOutlet var lblText: UILabel!
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
let userDefault = UserDefaults(suiteName: "group.com.abcd.sharecontent1")
if let dict = userDefault?.value(forKey: "storedURLData") as? NSDictionary{
let data = dict.value(forKey: "urlData") as! Data
let str = dict.value(forKey: "name") as! String
print("Data is :- ", data)
print("str is :- ", str)
self.lblText.text = str
userDefault?.removeObject(forKey: "storedURLData")
userDefault?.synchronize()
}
}
}