Update to AGP 3.2 alpha 18

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.0-alpha17'
+        classpath 'com.android.tools.build:gradle:3.2.0-alpha18'
     }
 }