Merge branch 'main' of https://github.com/Almaren/Android_Billing_v4up_PurchaseManager.git into main

Author: ataman

README.md

@@ -1,2 +1,22 @@
 # Android_Billing_v4up_PurchaseManager
-Android Billing v4+ implementation for non consumable products. Written in Kotlin using coroutines. Serverless verifying approval method of a purchased token. No UI sample.
+Android Billing v4+ implementation for non consumable products. Written in **Kotlin** using coroutines. Serverless verifying approval method of a purchased token. No UI sample. Android IAP Library.
+
+[An official integration.](https://developer.android.com/google/play/billing/integrate#kotlin)
+[And a sample.](https://github.com/android/play-billing-samples/blob/master/TrivialDriveKotlin/app/src/main/java/com/sample/android/trivialdrivesample/billing/BillingDataSource.kt)
+
+*My implemenation is much easy to use, you can adapt it also for subscriptions and for consumable products.*
+*PurchaseManager.kt is well documented.*
+
+## Preparing:
+* **First put your developer Base64-encoded RSA public key (from Google Play Console: your app -> monetization setup) in: /local.properties/base64EncodedPublicKey=YOUR_KEY**
+* **In order to test billing - Release your application with an integrated billing library but not yet implemented to any testing track (internal testing is better). Just adding 'com.android.billingclient:billing:4+' is enough at this stage.**
+* **For debugging testing: in Google Developers Console (Not Play Console) add your debug key SHA1.**
+* **In Google Play Console create a testers group.**
+
+## How to use:
+**All methods of PurchaseManager must be called from the main ui thread.**
+1. Call init(activity: Activity, listener: PurchaseListener) from Activity.onCreate(..). Via PurchaseListener you will receive available products to purchase, a purchased items, a result from the recent purchase.
+2. Call onResume() from Activity.onResume()
+3. Call dispose() from Activity.onDestroy()
+4. IAP methods: getItemPrices() and purchaseItem(itemType: PurchaseType)
+