Admob sdk v8.0+ rewarded ad in SwiftUI - ios

Question

I am trying to make rewarded ad from Admob in my SwiftUI app but faced some problems. I am using official documentation that is written in obj-c and trying to make swift class from it.
Here what i have
final class Rewarded: NSObject, GADFullScreenContentDelegate {
let token = Bundle.main.object(forInfoDictionaryKey: "GADApplicationIdentifier") as? String
var rewardedAd = GADRewardedAd()
var rewardFunction: (() -> Void)? = nil
override init() {
super.init()
LoadRewarded()
}
func LoadRewarded() {
let req = GADRequest()
GADRewardedAd.load(withAdUnitID: token!, request: req, completionHandler: { gad, error in
print(error)
})
}
func showAd(rewardFunction: #escaping () -> Void){
let root = UIApplication.shared.windows.first?.rootViewController
do {
try self.rewardedAd.canPresent(fromRootViewController: root!)
self.rewardFunction = rewardFunction
self.rewardedAd.present(fromRootViewController: root!, userDidEarnRewardHandler: rewardFunction)
} catch let error {
print(error)
}
}
func rewardedAd(_ rewardedAd: GADRewardedAd, userDidEarn reward: GADAdReward) {
if let rf = rewardFunction {
rf()
}
}
func rewardedAdDidDismiss(_ rewardedAd: GADRewardedAd) {
self.rewardedAd = GADRewardedAd()
LoadRewarded()
}
}
In method showAd i have an exception nilerror from invocation of try self.rewardedAd.canPresent(fromRootViewController: root!) and have no idea what to do with that. I didn't find any tutorial that shows how to set up it with version of sdk 8+, can you please help me to figure out what is the problem.

Answer 1

Found a solution, Google has paper on migration to v8+ sdk. So, from https://medium.com/#michaelbarneyjr/how-to-integrate-admob-ads-in-swiftui-fbfd3d774c50 and https://developers.google.com/admob/ios/migration#swift_7 I made a working rewarded ad with version of sdk 8.5 in SwiftUI
final class Rewarded: NSObject, GADFullScreenContentDelegate {
var rewardedAd: GADRewardedAd?
var rewardFunction: (() -> Void)? = nil
override init() {
super.init()
LoadRewarded()
}
func LoadRewarded(){
let request = GADRequest()
GADRewardedAd.load(withAdUnitID: Bundle.main.object(forInfoDictionaryKey: "GADApplicationIdentifier") as! String,
request: request, completionHandler: { (ad, error) in
if let error = error {
print("Rewarded ad failed to load with error: \(error.localizedDescription)")
return
}
self.rewardedAd = ad
self.rewardedAd?.fullScreenContentDelegate = self
}
)
}
func showAd(rewardFunction: #escaping () -> Void){
let root = UIApplication.shared.windows.first?.rootViewController
if let ad = rewardedAd {
ad.present(fromRootViewController: root!,
userDidEarnRewardHandler: {
let reward = ad.adReward
rewardFunction()
}
)
} else {
print("Ad wasn't ready")
}
}
func rewardedAd(_ rewardedAd: GADRewardedAd, userDidEarn reward: GADAdReward) {
if let rf = rewardFunction {
rf()
}
}
}

Answer 2

I found this code. I think it can help you:
import SwiftUI
import GoogleMobileAds
import UIKit
final class Rewarded: NSObject, GADRewardedAdDelegate{
var rewardedAd:GADRewardedAd = GADRewardedAd(adUnitID: rewardID)
var rewardFunction: (() -> Void)? = nil
override init() {
super.init()
LoadRewarded()
}
func LoadRewarded(){
let req = GADRequest()
self.rewardedAd.load(req)
}
func showAd(rewardFunction: #escaping () -> Void){
if self.rewardedAd.isReady{
self.rewardFunction = rewardFunction
let root = UIApplication.shared.windows.first?.rootViewController
self.rewardedAd.present(fromRootViewController: root!, delegate: self)
}
else{
print("Not Ready")
}
}
func rewardedAd(_ rewardedAd: GADRewardedAd, userDidEarn reward: GADAdReward) {
if let rf = rewardFunction {
rf()
}
}
func rewardedAdDidDismiss(_ rewardedAd: GADRewardedAd) {
self.rewardedAd = GADRewardedAd(adUnitID: rewardID)
LoadRewarded()
}
}
struct ContentView:View{
var rewardAd:Rewarded
init(){
self.rewardAd = Rewarded()
}
var body : some View{
Button(action: {
self.rewardAd.showAd(rewardFunction: {
print("Give Reward")
}
}){
Text("My Button")
}
}
}
Here is the link where I find the snippet: https://medium.com/#michaelbarneyjr/how-to-integrate-admob-ads-in-swiftui-fbfd3d774c50