Update dependency com.android.billingclient:billing to v4 (#75)

* Update dependency com.android.billingclient:billing to v4

* Update dependency com.android.billingclient:billing to v4

* Updated getSku to getSkus

Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: Akash Eldo <akasheldo@hotmail.com>

Author: 3 people

app/build.gradle

@@ -145,7 +145,7 @@ dependencies {
     implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
 
     // Google Play Billing
-    implementation 'com.android.billingclient:billing:3.0.1'
+    implementation 'com.android.billingclient:billing:4.0.0'
 
     // Testing dependencies
     implementation 'androidx.test.espresso:espresso-contrib:3.4.0' // Needed for idler

app/src/main/java/com/a494studios/koreanconjugator/CustomApplication.java

@@ -74,7 +74,7 @@ public void onBillingSetupFinished(@NotNull BillingResult billingResult) {
                         billingClient.queryPurchaseHistoryAsync(BillingClient.SkuType.INAPP, (result, list) -> {
                             if (result.getResponseCode() == BillingClient.BillingResponseCode.OK) {
                                 System.out.println("Got Ad Free from purchases");
-                                isAdFree = list.size() > 0 && list.get(0).getSku().equals(Utils.SKU_AD_FREE);
+                                isAdFree = list.size() > 0 && list.get(0).getSkus().get(0).equals(Utils.SKU_AD_FREE);
                                 Utils.setAdFree(getApplicationContext(), isAdFree);
                             } else {
                                 System.out.println("Error occurred when fetching purchase history:" + result.getDebugMessage());
@@ -140,7 +140,7 @@ public boolean isAdFree() {
     @Override
     public void onPurchasesUpdated(@NotNull BillingResult billingResult, @Nullable List<Purchase> list) {
         if(billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK
-                && !list.isEmpty() && list.get(0).getSku().equals(Utils.SKU_AD_FREE)) {
+                && !list.isEmpty() && list.get(0).getSkus().get(0).equals(Utils.SKU_AD_FREE)) {
 
             if(list.get(0).getPurchaseState() == Purchase.PurchaseState.PURCHASED) {
                 AcknowledgePurchaseParams consumeParams = AcknowledgePurchaseParams