Use AnimalSniffer to check for Android API compatiblity

build.gradle

@@ -13,6 +13,11 @@ buildscript {
 		classpath 'net.ltgt.gradle:gradle-errorprone-plugin:0.0.10'
     }
 }
+
+plugins {
+    id 'ru.vyarus.animalsniffer' version '1.4.3'
+}
+
 apply plugin: 'org.kordamp.gradle.markdown'
 
 apply from: 'version.gradle'
@@ -417,6 +422,16 @@ subprojects {
 	}
 }
 
+configure (androidProjects) {
+	apply plugin: 'ru.vyarus.animalsniffer'
+	dependencies {
+		signature "net.sf.androidscents.signature:android-api-level-${smackMinAndroidSdk}:2.2_r3@signature"
+	}
+	animalsniffer {
+		sourceSets = [sourceSets.main]
+	}
+}
+
 // There is no need to ever clirr integration test projects and the
 // smack-repl project.
 configure(integrationTestProjects + project(':smack-repl')) {

smack-android/build.gradle

@@ -17,14 +17,3 @@ dependencies {
 	// Add the Android jar to the Eclipse .classpath.
 	compile files(androidBootClasspath)
 }
-
-configure (androidProjects) {
-	task compileAndroid(type: JavaCompile) {
-		source = compileJava.source
-		classpath = compileJava.classpath
-		destinationDir = new File(buildDir, 'android')
-		options.bootClasspath = androidBootClasspath
-	}
-}
-
-test { dependsOn androidProjects*.compileAndroid }