update sample android to last version

README _JAVA.md

@@ -1,75 +1,71 @@
-ZarinPal In App Billing - Purchase SDK | MPG
-============================================
-ZarinPal Purchase SDK Provides payment methods on your Android Application.
+# ZarinPal In App Billing - Purchase SDK | MPG
 
+ZarinPal Purchase SDK Provides payment methods on your Android Application.
 
+# Introduction
 
-Introduction
-=============
 ZarinPal in-app purchases are the simplest solution to selling digital products or content on Android apps. So many app developers who want to sell digital goods or offer premium membership to users can simply use the it, in-app billing process for smooth and easy checkouts.
 
-
 <p align="center" width="100%">
 <img src="https://raw.githubusercontent.com/ZarinPal/Android-SDK/master/logo%20%E2%80%93%201.png" alt="sample" width="300" height="100"/>
 </p>
 
+# Requirements
 
-Requirements
-============
-
-*   Android 5.0 (API level 21) and above
-*   Android Gradle Plugin 3.5.1
-*   Gradle 5.4.1+
-*   AndroidX (as of v11.0.0)
+- Android 5.0 (API level 21) and above
+- Android Gradle Plugin 3.5.1 and above(this 8.1.4)
+- Gradle 5.4.1 and above (this 8.5)
+- AndroidX (as of v11.0.0)
 
-Installation
-============
+# Installation
 
 **Step 1**
 
 Add this to your root build.gradle at the end of repositories.
+
 ```gradle
     allprojects {
       ext.zarinpalSdkVersion = (LATEST_VERSION_REALEASE) //inform of Releases: https://github.com/ZarinPal/Android-SDK/releases
       repositories {
         ...
         mavenCentral()
      }
-```    
+```
 
 **Step 2**
 
 Add the dependency:
+
 ```gradle
     dependencies {
       implementation 'com.zarinpal:payment-provider:ext.zarinpalSdkVersion'
     }
-```    
-
+```
 
 If your project and business trusted to ZarinPal, SDK ables to providing **Mobile Payment Gateway** on your App so You should add the **MPG** dependency:
+
 ```gradle
     dependencies {
       implementation 'com.zarinpal:payment-provider:ext.zarinpalSdkVersion'
       implementation 'com.zarinpal:mpg:ext.zarinpalSdkVersion'
     }
-```    
+```
 
-How to use
-==========
+# How to use
+
+- add Permissions in your `Manifest.xml`:
 
-*   add Permissions in your `Manifest.xml`:
 ```xml
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
-```    
+```
 
-Initialize the billing client
-=============================
+# Initialize the billing client
 
 **Step 1**
 
-* `ZarinPalClientBilling` provides to create the billing client instance:
+- `ZarinPalClientBilling` provides to create the billing client instance:
+
 ```java
 
         BillingClientStateListener listener = new BillingClientStateListener() {
@@ -92,30 +88,30 @@ Initialize the billing client
                 .setNightMode(AppCompatDelegate.MODE_NIGHT_YES)
                 .build();
 
-        
-```    
+
+```
 
 **Step 2**
 
 For start purchase you need a `Purchase` instance, `Purchase` has 3 type of Payment:
 
-*   as **Payment Request** by `asPaymentRequest()`
-*   as **Authority ID** by `asAuthority()`
-*   as **Sku ID** by `asSku()`
+- as **Payment Request** by `asPaymentRequest()`
+- as **Authority ID** by `asAuthority()`
+- as **Sku ID** by `asSku()`
 
 If you would create payment Authority on Client, You must use `asPayementRequest()`, this method needs below parameters:
 
 **Require Parameters:**
 
-*   Merchant id: An unique ID of your business payment gateway.
-*   Amount: Amount of Purchase.
-*   Callback URL: A valid `URI` or `URL` Address for sending result purchase.
-*   Description: A Content for showing payer.
+- Merchant id: An unique ID of your business payment gateway.
+- Amount: Amount of Purchase.
+- Callback URL: A valid `URI` or `URL` Address for sending result purchase.
+- Description: A Content for showing payer.
 
 **Optional Parameters:**
 
-*   Mobile: Valid Mobile number of payer.
-*   Email: Valid Email Address of payer.
+- Mobile: Valid Mobile number of payer.
+- Email: Valid Email Address of payer.
 
 ```java
         Purchase purchase = Purchase.newBuilder().asPaymentRequest(
@@ -124,15 +120,18 @@ If you would create payment Authority on Client, You must use `asPayementRequest
                 "http:\\YOUR_SEVER_URL.com",
                 "1000IRR Purchase"
         ).build();
-```    
+```
 
 Maybe You had `Authority`, here You must use `asAuthority()`
+
 ```java
         Purchase purchase = Purchase.newBuilder()
                 .asAuthority("AUTHORITY_RESOLVED")
                 .build();
-```   
+```
+
 for `Sku` purchase:
+
 ```java
         Purchase purchase = Purchase.newBuilder()
                 .asSku("SKU_ID") // SKU_ID is an Id that you've generated on ZarinPal panel.
@@ -142,6 +141,7 @@ for `Sku` purchase:
 **Step 3**
 
 You must call `purchase` method to begin flow payment:
+
 ```java
            client.launchBillingFlow(purchase, new FutureCompletionListener<Receipt>() {
             @Override
@@ -158,22 +158,22 @@ You must call `purchase` method to begin flow payment:
                 }
             }
         });
-```    
-    
+```
+
 **Step 4**
 
 Finally if your eligible to have payment process through **MPG** You should adding `usesCleartextTraffic` to application tag in your `Manifest.xml`
+
 ```xml
-     
+
           <application
             android:name="..."
             android:usesCleartextTraffic="true"
             ....
             \>
-```    
+```
 
-SKU Query
-=========
+# SKU Query
 
 The ZarinPal Library stores the query results in a List of SkuPurchased objects. You can then call `querySkuPurchased` and you appear sku purchased with inforamtion in your view and provide service.
 
@@ -183,8 +183,8 @@ The ZarinPal Library stores the query results in a List of SkuPurchased objects.
                 .setSkuList(skus)
                 .orderByMobile("0935******")
                 .build();
-            
-            
+
+
     client.querySkuPurchased(skuQuery, new FutureCompletionListener<List<SkuPurchased>>() {
             @Override
             public void onComplete(TaskResult<List<SkuPurchased>> task) {
@@ -198,20 +198,18 @@ The ZarinPal Library stores the query results in a List of SkuPurchased objects.
                 }
             }
         });
-````
+```
 
-Features
-========
+# Features
 
 **Dark Mode**
 
 ```java
     client.setNightMode(AppCompatDelegate.MODE_NIGHT_YES)
-```    
+```
 
 **Appear Invoice**
 
 ```java
     client.enableShowInvoice()
-```    
-
+```