Refactor.

src/main/kotlin/com/beust/kobalt/plugin/android/AndroidCommand.kt

@@ -0,0 +1,33 @@
+package com.beust.kobalt.plugin.android
+
+import com.beust.kobalt.api.Project
+import com.beust.kobalt.misc.RunCommand
+import com.beust.kobalt.misc.log
+import java.io.File
+
+open class AndroidCommand(project: Project, androidHome: String, command: String, cwd: File = File(project.directory))
+: RunCommand(command) {
+    init {
+        env.put("ANDROID_HOME", androidHome)
+        directory = cwd
+    }
+
+    open fun call(args: List<String>) = run(args,
+            successCallback = { output ->
+                log(1, "$command succeeded:")
+                output.forEach {
+                    log(1, "  $it")
+                }
+            },
+            errorCallback = { output ->
+                with(StringBuilder()) {
+                    append("Error running $command:")
+                    output.forEach {
+                        append("  $it")
+                    }
+                    error(this.toString())
+                }
+            })
+}
+
+

src/main/kotlin/com/beust/kobalt/plugin/android/AndroidPlugin.kt

@@ -128,7 +128,7 @@ public class AndroidPlugin @Inject constructor(val javaCompiler: JavaCompiler)
 
     inner class AaptCommand(project: Project, aapt: String, val aaptCommand: String,
             useErrorStream: Boolean = false,
-            cwd: File = File(project.directory)) : AndroidCommand(project, aapt) {
+            cwd: File = File(project.directory)) : AndroidCommand(project, androidHome(project), aapt) {
         init {
             directory = cwd
             useErrorStreamAsErrorIndicator = useErrorStream
@@ -169,28 +169,6 @@ public class AndroidPlugin @Inject constructor(val javaCompiler: JavaCompiler)
         }
     }
 
-    inner open class AndroidCommand(project: Project, command: String, cwd: File = File(project.directory))
-            : RunCommand(command) {
-        init {
-            env.put("ANDROID_HOME", androidHome(project))
-            directory = cwd
-        }
-
-        open fun call(args: List<String>) = run(args,
-                successCallback = { output ->
-                    log(1, "$command succeeded:")
-                    output.forEach {
-                        log(1, "  $it")
-                    }
-                },
-                errorCallback = { output ->
-                    error("Error running $command:")
-                    output.forEach {
-                        error("  $it")
-                    }
-                })
-    }
-
     private fun generateR(project: Project, generated: String, aapt: String) {
 
         mergeAndroidManifest(project, context.variant)