diff --git a/java/app_builder.go b/java/app_builder.go
index ed7abce..82574ae 100644
--- a/java/app_builder.go
+++ b/java/app_builder.go
@@ -27,31 +27,6 @@
 )
 
 var (
-	aaptCreateResourceJavaFile = pctx.AndroidStaticRule("aaptCreateResourceJavaFile",
-		blueprint.RuleParams{
-			Command: `rm -rf "$javaDir" && mkdir -p "$javaDir" && ` +
-				`$aaptCmd package -m $aaptFlags -P $publicResourcesFile -G $proguardOptionsFile ` +
-				`-J $javaDir || ( rm -rf "$javaDir/*"; exit 41 ) && ` +
-				`find $javaDir -name "*.java" > $javaFileList`,
-			CommandDeps: []string{"$aaptCmd"},
-		},
-		"aaptFlags", "publicResourcesFile", "proguardOptionsFile", "javaDir", "javaFileList")
-
-	aaptCreateAssetsPackage = pctx.AndroidStaticRule("aaptCreateAssetsPackage",
-		blueprint.RuleParams{
-			Command:     `rm -f $out && $aaptCmd package $aaptFlags -F $out`,
-			CommandDeps: []string{"$aaptCmd"},
-		},
-		"aaptFlags", "publicResourcesFile", "proguardOptionsFile", "javaDir", "javaFileList")
-
-	aaptAddResources = pctx.AndroidStaticRule("aaptAddResources",
-		blueprint.RuleParams{
-			// TODO: add-jni-shared-libs-to-package
-			Command:     `cp -f $in $out.tmp && $aaptCmd package -u $aaptFlags -F $out.tmp && mv $out.tmp $out`,
-			CommandDeps: []string{"$aaptCmd"},
-		},
-		"aaptFlags")
-
 	signapk = pctx.AndroidStaticRule("signapk",
 		blueprint.RuleParams{
 			Command:     `java -jar $signapkCmd $certificates $in $out`,
@@ -75,63 +50,30 @@
 	pctx.HostJavaToolVariable("signapkCmd", "signapk.jar")
 }
 
-func CreateResourceJavaFiles(ctx android.ModuleContext, flags []string,
-	deps android.Paths) (android.Path, android.Path, android.Path) {
-	javaDir := android.PathForModuleGen(ctx, "R")
-	javaFileList := android.PathForModuleOut(ctx, "R.filelist")
-	publicResourcesFile := android.PathForModuleOut(ctx, "public_resources.xml")
-	proguardOptionsFile := android.PathForModuleOut(ctx, "proguard.options")
-
-	ctx.Build(pctx, android.BuildParams{
-		Rule:        aaptCreateResourceJavaFile,
-		Description: "aapt create R.java",
-		Outputs:     android.WritablePaths{publicResourcesFile, proguardOptionsFile, javaFileList},
-		Implicits:   deps,
-		Args: map[string]string{
-			"aaptFlags":           strings.Join(flags, " "),
-			"publicResourcesFile": publicResourcesFile.String(),
-			"proguardOptionsFile": proguardOptionsFile.String(),
-			"javaDir":             javaDir.String(),
-			"javaFileList":        javaFileList.String(),
-		},
+var combineApk = pctx.AndroidStaticRule("combineApk",
+	blueprint.RuleParams{
+		Command:     `${config.MergeZipsCmd} $out $in`,
+		CommandDeps: []string{"${config.MergeZipsCmd}"},
 	})
 
-	return publicResourcesFile, proguardOptionsFile, javaFileList
-}
+func CreateAppPackage(ctx android.ModuleContext, outputFile android.WritablePath,
+	resJarFile, dexJarFile android.Path, certificates []string) {
 
-func CreateExportPackage(ctx android.ModuleContext, flags []string, deps android.Paths) android.ModuleOutPath {
-	outputFile := android.PathForModuleOut(ctx, "package-export.apk")
+	// TODO(ccross): JNI libs
+
+	unsignedApk := android.PathForModuleOut(ctx, "unsigned.apk")
+
+	inputs := android.Paths{resJarFile}
+	if dexJarFile != nil {
+		inputs = append(inputs, dexJarFile)
+	}
 
 	ctx.Build(pctx, android.BuildParams{
-		Rule:        aaptCreateAssetsPackage,
-		Description: "aapt export package",
-		Output:      outputFile,
-		Implicits:   deps,
-		Args: map[string]string{
-			"aaptFlags": strings.Join(flags, " "),
-		},
+		Rule:   combineApk,
+		Inputs: inputs,
+		Output: unsignedApk,
 	})
 
-	return outputFile
-}
-
-func CreateAppPackage(ctx android.ModuleContext, flags []string, jarFile android.Path,
-	certificates []string) android.Path {
-
-	resourceApk := android.PathForModuleOut(ctx, "resources.apk")
-
-	ctx.Build(pctx, android.BuildParams{
-		Rule:        aaptAddResources,
-		Description: "aapt package",
-		Output:      resourceApk,
-		Input:       jarFile,
-		Args: map[string]string{
-			"aaptFlags": strings.Join(flags, " "),
-		},
-	})
-
-	outputFile := android.PathForModuleOut(ctx, "package.apk")
-
 	var certificateArgs []string
 	for _, c := range certificates {
 		certificateArgs = append(certificateArgs, c+".x509.pem", c+".pk8")
@@ -141,11 +83,9 @@
 		Rule:        signapk,
 		Description: "signapk",
 		Output:      outputFile,
-		Input:       resourceApk,
+		Input:       unsignedApk,
 		Args: map[string]string{
 			"certificates": strings.Join(certificateArgs, " "),
 		},
 	})
-
-	return outputFile
 }