feat:增加支付公钥配置项

build.gradle

@@ -2,13 +2,13 @@ apply from: "./module_standard.gradle"
 android {
     namespace 'com.example.module_google'
 
-    def gak = project.hasProperty("GOOGLE_APP_KEY") ? GOOGLE_APP_KEY :
-            "Define GOOGLE_APP_KEY in gradle.properties. Or './gradlew -PGOOGLE_APP_KEY=gak_value ... taskName'"
+    def gak = project.hasProperty("GOOGLE_BILLING_PUBLIC_KEY") ? GOOGLE_BILLING_PUBLIC_KEY :
+            "Define GOOGLE_BILLING_PUBLIC_KEY in gradle.properties. Or './gradlew -PGOOGLE_BILLING_PUBLIC_KEY=gak_value ... taskName'"
     def gsci = project.hasProperty("GOOGLE_SERVER_CLIENT_ID") ? GOOGLE_SERVER_CLIENT_ID :
             "Define GOOGLE_SERVER_CLIENT_ID in gradle.properties. Or 'gradle -PGOOGLE_SERVER_CLIENT_ID=gak_value ... taskName'"
 
     defaultConfig {
-        buildConfigField "String", "GOOGLE_APP_KEY", "\"$gak\""
+        buildConfigField "String", "GOOGLE_BILLING_PUBLIC_KEY", "\"$gak\""
         buildConfigField "String", "GOOGLE_SERVER_CLIENT_ID", "\"$gsci\""
     }
 }

src/main/java/com/example/module_google/billing/BillingService.kt

@@ -29,8 +29,7 @@ class BillingService(/*活动*/
         private const val TAG = "BillingManager"
 
         /*购买key*/
-        private const val BASE_64_ENCODED_PUBLIC_KEY =
-            ""
+        private const val BASE_64_ENCODED_PUBLIC_KEY = BuildConfig.GOOGLE_BILLING_PUBLIC_KEY
     }
 
     /*客户端*/