diff --git a/java/app.go b/java/app.go
new file mode 100644
index 0000000..869cfea
--- /dev/null
+++ b/java/app.go
@@ -0,0 +1,317 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package java
+
+// This file contains the module types for compiling Android apps.
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/google/blueprint"
+	"github.com/google/blueprint/pathtools"
+
+	"android/soong/common"
+)
+
+// AAR prebuilts
+// AndroidManifest.xml merging
+// package splits
+
+type AndroidApp struct {
+	javaBase
+
+	appProperties struct {
+		// certificate: path to a certificate, or the name of a certificate in the default
+		// certificate directory, or blank to use the default product certificate
+		Certificate string
+
+		// additional_certificates: paths to extra certificates to sign the apk with
+		Additional_certificates []string
+
+		// export_package_resources: If set, create package-export.apk, which other packages can
+		// use to get PRODUCT-agnostic resource data like IDs and type definitions.
+		Export_package_resources bool
+
+		// aaptflags: flags passed to aapt when creating the apk
+		Aaptflags []string
+
+		// package_splits: list of resource labels to generate individual resource packages
+		Package_splits []string
+
+		// asset_dirs: list of directories relative to the Blueprints file containing assets.
+		// Defaults to "assets"
+		Asset_dirs []string
+
+		// android_resource_dirs: list of directories relative to the Blueprints file containing
+		// Java resources
+		Android_resource_dirs []string
+	}
+
+	aaptJavaFileList string
+	exportPackage    string
+}
+
+func (a *AndroidApp) JavaDynamicDependencies(ctx common.AndroidDynamicDependerModuleContext) []string {
+	deps := a.javaBase.JavaDynamicDependencies(ctx)
+
+	if !a.properties.No_standard_libraries {
+		switch a.properties.Sdk_version { // TODO: Res_sdk_version?
+		case "current", "system_current", "":
+			deps = append(deps, "framework-res")
+		default:
+			// We'll already have a dependency on an sdk prebuilt android.jar
+		}
+	}
+
+	return deps
+}
+
+func (a *AndroidApp) GenerateJavaBuildActions(ctx common.AndroidModuleContext) {
+	aaptFlags, aaptDeps, hasResources := a.aaptFlags(ctx)
+
+	if hasResources {
+		// First generate R.java so we can build the .class files
+		aaptRJavaFlags := append([]string(nil), aaptFlags...)
+
+		publicResourcesFile, proguardOptionsFile, aaptJavaFileList :=
+			CreateResourceJavaFiles(ctx, aaptRJavaFlags, aaptDeps)
+		a.aaptJavaFileList = aaptJavaFileList
+		a.ExtraSrcLists = append(a.ExtraSrcLists, aaptJavaFileList)
+
+		if a.appProperties.Export_package_resources {
+			aaptPackageFlags := append([]string(nil), aaptFlags...)
+			var hasProduct bool
+			for _, f := range aaptPackageFlags {
+				if strings.HasPrefix(f, "--product") {
+					hasProduct = true
+					break
+				}
+			}
+
+			if !hasProduct {
+				aaptPackageFlags = append(aaptPackageFlags,
+					"--product "+ctx.AConfig().ProductAaptCharacteristics())
+			}
+			a.exportPackage = CreateExportPackage(ctx, aaptPackageFlags, aaptDeps)
+			ctx.CheckbuildFile(a.exportPackage)
+		}
+		ctx.CheckbuildFile(publicResourcesFile)
+		ctx.CheckbuildFile(proguardOptionsFile)
+		ctx.CheckbuildFile(aaptJavaFileList)
+	}
+
+	// apps manifests are handled by aapt, don't let javaBase see them
+	a.properties.Manifest = ""
+
+	//if !ctx.ContainsProperty("proguard.enabled") {
+	//	a.properties.Proguard.Enabled = true
+	//}
+
+	a.javaBase.GenerateJavaBuildActions(ctx)
+
+	aaptPackageFlags := append([]string(nil), aaptFlags...)
+	var hasProduct bool
+	for _, f := range aaptPackageFlags {
+		if strings.HasPrefix(f, "--product") {
+			hasProduct = true
+			break
+		}
+	}
+
+	if !hasProduct {
+		aaptPackageFlags = append(aaptPackageFlags,
+			"--product "+ctx.AConfig().ProductAaptCharacteristics())
+	}
+
+	certificate := a.appProperties.Certificate
+	if certificate == "" {
+		certificate = ctx.AConfig().DefaultAppCertificate()
+	} else if dir, _ := filepath.Split(certificate); dir == "" {
+		certificate = filepath.Join(ctx.AConfig().DefaultAppCertificateDir(), certificate)
+	} else {
+		certificate = filepath.Join(ctx.AConfig().SrcDir(), certificate)
+	}
+
+	certificates := []string{certificate}
+	for _, c := range a.appProperties.Additional_certificates {
+		certificates = append(certificates, filepath.Join(ctx.AConfig().SrcDir(), c))
+	}
+
+	a.outputFile = CreateAppPackage(ctx, aaptPackageFlags, a.outputFile, certificates)
+	ctx.InstallFileName("app", ctx.ModuleName()+".apk", a.outputFile)
+}
+
+var aaptIgnoreFilenames = []string{
+	".svn",
+	".git",
+	".ds_store",
+	"*.scc",
+	".*",
+	"CVS",
+	"thumbs.db",
+	"picasa.ini",
+	"*~",
+}
+
+func (a *AndroidApp) aaptFlags(ctx common.AndroidModuleContext) ([]string, []string, bool) {
+	aaptFlags := a.appProperties.Aaptflags
+	hasVersionCode := false
+	hasVersionName := false
+	for _, f := range aaptFlags {
+		if strings.HasPrefix(f, "--version-code") {
+			hasVersionCode = true
+		} else if strings.HasPrefix(f, "--version-name") {
+			hasVersionName = true
+		}
+	}
+
+	if true /* is not a test */ {
+		aaptFlags = append(aaptFlags, "-z")
+	}
+
+	assetDirs := a.appProperties.Asset_dirs
+	if len(assetDirs) == 0 {
+		defaultAssetDir := filepath.Join(common.ModuleSrcDir(ctx), "assets")
+		if _, err := os.Stat(defaultAssetDir); err == nil {
+			assetDirs = []string{defaultAssetDir}
+		} else {
+			// Default asset directory doesn't exist, add a dep on the parent directory to
+			// regenerate the manifest if it is created later
+			// TODO: use glob to avoid rerunning whole regenerate if a different file is created?
+			ctx.AddNinjaFileDeps(common.ModuleSrcDir(ctx))
+		}
+	} else {
+		assetDirs = pathtools.PrefixPaths(assetDirs, common.ModuleSrcDir(ctx))
+	}
+
+	resourceDirs := a.appProperties.Android_resource_dirs
+	if len(resourceDirs) == 0 {
+		defaultResourceDir := filepath.Join(common.ModuleSrcDir(ctx), "res")
+		if _, err := os.Stat(defaultResourceDir); err == nil {
+			resourceDirs = []string{defaultResourceDir}
+		} else {
+			// Default resource directory doesn't exist, add a dep on the parent directory to
+			// regenerate the manifest if it is created later
+			// TODO: use glob to avoid rerunning whole regenerate if a different file is created?
+			ctx.AddNinjaFileDeps(common.ModuleSrcDir(ctx))
+		}
+	} else {
+		resourceDirs = pathtools.PrefixPaths(resourceDirs, common.ModuleSrcDir(ctx))
+	}
+
+	rootSrcDir := ctx.AConfig().SrcDir()
+	var overlayResourceDirs []string
+	// For every resource directory, check if there is an overlay directory with the same path.
+	// If found, it will be prepended to the list of resource directories.
+	for _, overlayDir := range ctx.AConfig().ResourceOverlays() {
+		for _, resourceDir := range resourceDirs {
+			relResourceDir, err := filepath.Rel(rootSrcDir, resourceDir)
+			if err != nil {
+				ctx.ModuleErrorf("resource directory %q is not in source tree", resourceDir)
+				continue
+			}
+			overlayResourceDir := filepath.Join(overlayDir, relResourceDir)
+			if _, err := os.Stat(overlayResourceDir); err == nil {
+				overlayResourceDirs = append(overlayResourceDirs, overlayResourceDir)
+			} else {
+				// Overlay resource directory doesn't exist, add a dep to regenerate the manifest if
+				// it is created later
+				ctx.AddNinjaFileDeps(overlayResourceDir)
+			}
+		}
+	}
+
+	if len(overlayResourceDirs) > 0 {
+		resourceDirs = append(overlayResourceDirs, resourceDirs...)
+	}
+
+	// aapt needs to rerun if any files are added or modified in the assets or resource directories,
+	// use glob to create a filelist.
+	var aaptDeps []string
+	var hasResources bool
+	for _, d := range resourceDirs {
+		newDeps := common.Glob(ctx, filepath.Join(d, "**/*"), aaptIgnoreFilenames)
+		aaptDeps = append(aaptDeps, newDeps...)
+		if len(newDeps) > 0 {
+			hasResources = true
+		}
+	}
+	for _, d := range assetDirs {
+		newDeps := common.Glob(ctx, filepath.Join(d, "**/*"), aaptIgnoreFilenames)
+		aaptDeps = append(aaptDeps, newDeps...)
+	}
+
+	manifestFile := a.properties.Manifest
+	if manifestFile == "" {
+		manifestFile = "AndroidManifest.xml"
+	}
+
+	manifestFile = filepath.Join(common.ModuleSrcDir(ctx), manifestFile)
+	aaptDeps = append(aaptDeps, manifestFile)
+
+	aaptFlags = append(aaptFlags, "-M "+manifestFile)
+	aaptFlags = append(aaptFlags, common.JoinWithPrefix(assetDirs, "-A "))
+	aaptFlags = append(aaptFlags, common.JoinWithPrefix(resourceDirs, "-S "))
+
+	ctx.VisitDirectDeps(func(module blueprint.Module) {
+		var depFile string
+		if sdkDep, ok := module.(sdkDependency); ok {
+			depFile = sdkDep.ClasspathFile()
+		} else if javaDep, ok := module.(JavaDependency); ok {
+			if ctx.OtherModuleName(module) == "framework-res" {
+				depFile = javaDep.(*javaBase).module.(*AndroidApp).exportPackage
+			}
+		}
+		if depFile != "" {
+			aaptFlags = append(aaptFlags, "-I "+depFile)
+			aaptDeps = append(aaptDeps, depFile)
+		}
+	})
+
+	sdkVersion := a.properties.Sdk_version
+	if sdkVersion == "" {
+		sdkVersion = ctx.AConfig().PlatformSdkVersion()
+	}
+
+	aaptFlags = append(aaptFlags, "--min-sdk-version "+sdkVersion)
+	aaptFlags = append(aaptFlags, "--target-sdk-version "+sdkVersion)
+
+	if !hasVersionCode {
+		aaptFlags = append(aaptFlags, "--version-code "+ctx.AConfig().PlatformSdkVersion())
+	}
+
+	if !hasVersionName {
+		aaptFlags = append(aaptFlags,
+			"--version-name "+ctx.AConfig().PlatformVersion()+"-"+ctx.AConfig().BuildNumber())
+	}
+
+	// TODO: LOCAL_PACKAGE_OVERRIDES
+	//    $(addprefix --rename-manifest-package , $(PRIVATE_MANIFEST_PACKAGE_NAME)) \
+
+	// TODO: LOCAL_INSTRUMENTATION_FOR
+	//    $(addprefix --rename-instrumentation-target-package , $(PRIVATE_MANIFEST_INSTRUMENTATION_FOR))
+
+	return aaptFlags, aaptDeps, hasResources
+}
+
+func AndroidAppFactory() (blueprint.Module, []interface{}) {
+	module := &AndroidApp{}
+
+	module.properties.Dex = true
+
+	return NewJavaBase(&module.javaBase, module, common.DeviceSupported, &module.appProperties)
+}