fix(android): update gradle config

Author: craftzdog

android/build.gradle

@@ -6,20 +6,21 @@ buildscript {
       jcenter()
     }
     dependencies {
-      classpath 'com.android.tools.build:gradle:3.2.1'
+      classpath 'com.android.tools.build:gradle:4.2.2'
     }
   }
 }
 
 apply plugin: 'com.android.library'
 
-def DEFAULT_COMPILE_SDK_VERSION = 30
-def DEFAULT_BUILD_TOOLS_VERSION = "30.0.2"
-def DEFAULT_TARGET_SDK_VERSION = 30
+def getExtOrDefault(name) {
+  return rootProject.ext.has(name) ? rootProject.ext.get(name) : project.properties['SQLite2_' + name]
+}
 
 android {
-  compileSdkVersion rootProject.hasProperty('compileSdkVersion') ? rootProject.compileSdkVersion : DEFAULT_COMPILE_SDK_VERSION
-  buildToolsVersion rootProject.hasProperty('buildToolsVersion') ? rootProject.buildToolsVersion : DEFAULT_BUILD_TOOLS_VERSION
+  compileSdkVersion getExtOrIntegerDefault('compileSdkVersion')
+  buildToolsVersion getExtOrDefault('buildToolsVersion')
+  ndkVersion getExtOrDefault('ndkVersion')
 
   defaultConfig {
     minSdkVersion 16

android/gradle.properties

@@ -1,2 +1,5 @@
+SQLite2_compileSdkVersion=30
+SQLite2_buildToolsVersion=30.0.2
+SQLite2_targetSdkVersion=30
 android.useAndroidX=true
 android.enableJetifier=true