Automating png generation from svg files.

app/build.gradle

@@ -30,6 +30,20 @@ task createVersionXML {
 }
 preBuild.dependsOn createVersionXML
 
+//
+//	Convert SVG images from art directory into PNG files.
+//
+task generateDrawablesFromArt {
+	doLast {
+        def p = 'make -C app/src/main/art RES=../res TMP=../../../build/art'.execute()
+		p.consumeProcessOutput()
+		p.waitFor()
+		if ( p.exitValue() )
+			throw new GradleException("Generation of art failed.")
+	}
+}
+preBuild.dependsOn generateDrawablesFromArt
+
 android {
     compileSdkVersion 10
     buildToolsVersion "21.1.1"