Upgrade gradle/plugin versions. Publish OsmAnd-java to ivy.

OsmAnd-java/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'java'
 apply plugin: 'maven-publish'
+apply plugin: 'ivy-publish'
 
 configurations {
 	android
@@ -85,11 +86,21 @@ artifacts {
 }
 
 publishing {
+	repositories {
+		ivy {
+			url = System.getenv("OSMAND_BINARIES_IVY_ROOT") ?: "./"
+		}
+	}
     publications {
         maven(MavenPublication) {
 			artifactId "osmand-base"
             from components.java
         }
+		ivyJava(IvyPublication) {
+			artifact androidJar {
+				classifier 'android'
+			}
+		}
 	}
 }
 

build.gradle

@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.3.11'
+    ext.kotlin_version = '1.4.10'
     repositories {
         google()
         mavenCentral()
@@ -10,7 +10,7 @@ buildscript {
     }
     dependencies {
         //classpath 'com.android.tools.build:gradle:2.+'
-        classpath 'com.android.tools.build:gradle:3.2.1'
+        classpath 'com.android.tools.build:gradle:4.1.1'
         classpath 'com.google.gms:google-services:3.0.0'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

gradle.properties

@@ -18,6 +18,7 @@
 # for enableD8=true min sdk must be > 22
 # UPDATE: temporairly commented since gradle plugin updated to 3.1.3 and claims INSTALL_FAILED_DEXOPT is fixed
 # UPDATE 2: D8 causes problems on arm64 devices with Android 6.0 (API 23)
-android.enableD8=false
+# UPDATE 3: Turn on D8 to recover builds with new gradle 6.5 and pluigin 4.1.1
+#android.enableD8=false
 android.enableJetifier=true
 android.useAndroidX=true

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists