chore(Android): Update readme.md with Gradle info.

closes #335, closes #329

record/README.md

@@ -77,6 +77,8 @@ record.dispose(); // As always, don't forget this one.
 ## Setup, permissions and others
 
 ### Android
+Plugin targets API level 34 uses Java 17. Follow [Gradle setup](https://github.com/llfbandit/record/blob/master/record_android/README.md) if needed.
+
 ```xml
 <uses-permission android:name="android.permission.RECORD_AUDIO" />
 <!-- Optional: Add this permission if you want to use bluetooth telephony device like headset/earbuds -->

record_android/README.md

@@ -1,3 +1,32 @@
 # record Android
 
-Android specific implementation for record package called by record_platform_interface.
+Android specific implementation for record package called by record_platform_interface.
+
+## Setup
+### Plugin targets API level 34:
+
+You must set Android Gradle Plugin to at least version 8.1.1 for compatibility.
+
+In android/settings.gradle, apply:
+```groovy
+plugins {  
+    id "com.android.application" version "8.3.1" apply false
+    ...
+}
+```
+
+### Plugin uses Java 17:
+
+You must set Gradle to at least version 7.3.0 for compatibility.
+
+Since we raised Android Gradle Plugin, minimum is version 8.4.
+
+In android/gradle/wrapper/gradle-wrapper.properties, apply:
+```
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+```
+
+or use `android/gradle/gradlew wrapper --gradle-version=8.7`
+
+For more info on how to update Gradle:
+https://developer.android.com/build/releases/gradle-plugin