diff --git a/apex/androidmk.go b/apex/androidmk.go
index a7a0107..2048429 100644
--- a/apex/androidmk.go
+++ b/apex/androidmk.go
@@ -263,7 +263,7 @@
 			if !ok {
 				panic(fmt.Sprintf("Expected %s to be AndroidAppSet", fi.module))
 			}
-			fmt.Fprintln(w, "LOCAL_APK_SET_INSTALL_FILE :=", as.InstallFile())
+			fmt.Fprintln(w, "LOCAL_APK_SET_INSTALL_FILE :=", as.PackedAdditionalOutputs().String())
 			fmt.Fprintln(w, "LOCAL_APKCERTS_FILE :=", as.APKCertsFile().String())
 			fmt.Fprintln(w, "include $(BUILD_SYSTEM)/soong_android_app_set.mk")
 		case nativeSharedLib, nativeExecutable, nativeTest:
diff --git a/apex/builder.go b/apex/builder.go
index 2e21ddf..3599c5d 100644
--- a/apex/builder.go
+++ b/apex/builder.go
@@ -442,7 +442,8 @@
 		} else {
 			if fi.class == appSet {
 				copyCommands = append(copyCommands,
-					fmt.Sprintf("unzip -qDD -d %s %s", destPathDir, fi.builtFile.String()))
+					fmt.Sprintf("unzip -qDD -d %s %s", destPathDir,
+						fi.module.(*java.AndroidAppSet).PackedAdditionalOutputs().String()))
 			} else {
 				copyCommands = append(copyCommands, "cp -f "+fi.builtFile.String()+" "+destPath)
 			}
diff --git a/cmd/extract_apks/main.go b/cmd/extract_apks/main.go
index 6e51a28..1cf64de 100644
--- a/cmd/extract_apks/main.go
+++ b/cmd/extract_apks/main.go
@@ -356,7 +356,7 @@
 
 // Writes out selected entries, renaming them as needed
 func (apkSet *ApkSet) writeApks(selected SelectionResult, config TargetConfig,
-	writer Zip2ZipWriter, partition string) ([]string, error) {
+	outFile io.Writer, zipWriter Zip2ZipWriter, partition string) ([]string, error) {
 	// Renaming rules:
 	//  splits/MODULE-master.apk to STEM.apk
 	// else
@@ -406,8 +406,14 @@
 				origin, inName, outName)
 		}
 		entryOrigin[outName] = inName
-		if err := writer.CopyFrom(apkFile, outName); err != nil {
-			return nil, err
+		if outName == config.stem+".apk" {
+			if err := writeZipEntryToFile(outFile, apkFile); err != nil {
+				return nil, err
+			}
+		} else {
+			if err := zipWriter.CopyFrom(apkFile, outName); err != nil {
+				return nil, err
+			}
 		}
 		if partition != "" {
 			apkcerts = append(apkcerts, fmt.Sprintf(
@@ -426,14 +432,13 @@
 	if !ok {
 		return fmt.Errorf("Couldn't find apk path %s", selected.entries[0])
 	}
-	inputReader, _ := apk.Open()
-	_, err := io.Copy(outFile, inputReader)
-	return err
+	return writeZipEntryToFile(outFile, apk)
 }
 
 // Arguments parsing
 var (
-	outputFile   = flag.String("o", "", "output file containing extracted entries")
+	outputFile   = flag.String("o", "", "output file for primary entry")
+	zipFile      = flag.String("zip", "", "output file containing additional extracted entries")
 	targetConfig = TargetConfig{
 		screenDpi: map[android_bundle_proto.ScreenDensity_DensityAlias]bool{},
 		abis:      map[android_bundle_proto.Abi_AbiAlias]int{},
@@ -494,7 +499,8 @@
 
 func processArgs() {
 	flag.Usage = func() {
-		fmt.Fprintln(os.Stderr, `usage: extract_apks -o <output-file> -sdk-version value -abis value `+
+		fmt.Fprintln(os.Stderr, `usage: extract_apks -o <output-file> [-zip <output-zip-file>] `+
+			`-sdk-version value -abis value `+
 			`-screen-densities value {-stem value | -extract-single} [-allow-prereleased] `+
 			`[-apkcerts <apkcerts output file> -partition <partition>] <APK set>`)
 		flag.PrintDefaults()
@@ -510,7 +516,8 @@
 	flag.StringVar(&targetConfig.stem, "stem", "", "output entries base name in the output zip file")
 	flag.Parse()
 	if (*outputFile == "") || len(flag.Args()) != 1 || *version == 0 ||
-		(targetConfig.stem == "" && !*extractSingle) || (*apkcertsOutput != "" && *partition == "") {
+		((targetConfig.stem == "" || *zipFile == "") && !*extractSingle) ||
+		(*apkcertsOutput != "" && *partition == "") {
 		flag.Usage()
 	}
 	targetConfig.sdkVersion = int32(*version)
@@ -542,13 +549,20 @@
 	if *extractSingle {
 		err = apkSet.extractAndCopySingle(sel, outFile)
 	} else {
-		writer := zip.NewWriter(outFile)
+		zipOutputFile, err := os.Create(*zipFile)
+		if err != nil {
+			log.Fatal(err)
+		}
+		defer zipOutputFile.Close()
+
+		zipWriter := zip.NewWriter(zipOutputFile)
 		defer func() {
-			if err := writer.Close(); err != nil {
+			if err := zipWriter.Close(); err != nil {
 				log.Fatal(err)
 			}
 		}()
-		apkcerts, err := apkSet.writeApks(sel, targetConfig, writer, *partition)
+
+		apkcerts, err := apkSet.writeApks(sel, targetConfig, outFile, zipWriter, *partition)
 		if err == nil && *apkcertsOutput != "" {
 			apkcertsFile, err := os.Create(*apkcertsOutput)
 			if err != nil {
@@ -567,3 +581,13 @@
 		log.Fatal(err)
 	}
 }
+
+func writeZipEntryToFile(outFile io.Writer, zipEntry *zip.File) error {
+	reader, err := zipEntry.Open()
+	if err != nil {
+		return err
+	}
+	defer reader.Close()
+	_, err = io.Copy(outFile, reader)
+	return err
+}
diff --git a/cmd/extract_apks/main_test.go b/cmd/extract_apks/main_test.go
index 9fcf324..f5e4046 100644
--- a/cmd/extract_apks/main_test.go
+++ b/cmd/extract_apks/main_test.go
@@ -15,6 +15,7 @@
 package main
 
 import (
+	"bytes"
 	"fmt"
 	"reflect"
 	"testing"
@@ -437,8 +438,8 @@
 	stem       string
 	partition  string
 	// what we write from what
-	expectedZipEntries map[string]string
-	expectedApkcerts   []string
+	zipEntries       map[string]string
+	expectedApkcerts []string
 }
 
 func TestWriteApks(t *testing.T) {
@@ -448,7 +449,7 @@
 			moduleName: "mybase",
 			stem:       "Foo",
 			partition:  "system",
-			expectedZipEntries: map[string]string{
+			zipEntries: map[string]string{
 				"Foo.apk":       "splits/mybase-master.apk",
 				"Foo-xhdpi.apk": "splits/mybase-xhdpi.apk",
 			},
@@ -462,7 +463,7 @@
 			moduleName: "base",
 			stem:       "Bar",
 			partition:  "product",
-			expectedZipEntries: map[string]string{
+			zipEntries: map[string]string{
 				"Bar.apk": "universal.apk",
 			},
 			expectedApkcerts: []string{
@@ -471,23 +472,46 @@
 		},
 	}
 	for _, testCase := range testCases {
-		apkSet := ApkSet{entries: make(map[string]*zip.File)}
-		sel := SelectionResult{moduleName: testCase.moduleName}
-		for _, in := range testCase.expectedZipEntries {
-			apkSet.entries[in] = &zip.File{FileHeader: zip.FileHeader{Name: in}}
-			sel.entries = append(sel.entries, in)
-		}
-		writer := testZip2ZipWriter{make(map[string]string)}
-		config := TargetConfig{stem: testCase.stem}
-		apkcerts, err := apkSet.writeApks(sel, config, writer, testCase.partition)
-		if err != nil {
-			t.Error(err)
-		}
-		if !reflect.DeepEqual(testCase.expectedZipEntries, writer.entries) {
-			t.Errorf("expected zip entries %v, got %v", testCase.expectedZipEntries, writer.entries)
-		}
-		if !reflect.DeepEqual(testCase.expectedApkcerts, apkcerts) {
-			t.Errorf("expected apkcerts %v, got %v", testCase.expectedApkcerts, apkcerts)
-		}
+		t.Run(testCase.name, func(t *testing.T) {
+			testZipBuf := &bytes.Buffer{}
+			testZip := zip.NewWriter(testZipBuf)
+			for _, in := range testCase.zipEntries {
+				f, _ := testZip.Create(in)
+				f.Write([]byte(in))
+			}
+			testZip.Close()
+
+			zipReader, _ := zip.NewReader(bytes.NewReader(testZipBuf.Bytes()), int64(testZipBuf.Len()))
+
+			apkSet := ApkSet{entries: make(map[string]*zip.File)}
+			sel := SelectionResult{moduleName: testCase.moduleName}
+			for _, f := range zipReader.File {
+				apkSet.entries[f.Name] = f
+				sel.entries = append(sel.entries, f.Name)
+			}
+
+			zipWriter := testZip2ZipWriter{make(map[string]string)}
+			outWriter := &bytes.Buffer{}
+			config := TargetConfig{stem: testCase.stem}
+			apkcerts, err := apkSet.writeApks(sel, config, outWriter, zipWriter, testCase.partition)
+			if err != nil {
+				t.Error(err)
+			}
+			expectedZipEntries := make(map[string]string)
+			for k, v := range testCase.zipEntries {
+				if k != testCase.stem+".apk" {
+					expectedZipEntries[k] = v
+				}
+			}
+			if !reflect.DeepEqual(expectedZipEntries, zipWriter.entries) {
+				t.Errorf("expected zip entries %v, got %v", testCase.zipEntries, zipWriter.entries)
+			}
+			if !reflect.DeepEqual(testCase.expectedApkcerts, apkcerts) {
+				t.Errorf("expected apkcerts %v, got %v", testCase.expectedApkcerts, apkcerts)
+			}
+			if g, w := outWriter.String(), testCase.zipEntries[testCase.stem+".apk"]; !reflect.DeepEqual(g, w) {
+				t.Errorf("expected output file contents %q, got %q", testCase.stem+".apk", outWriter.String())
+			}
+		})
 	}
 }
diff --git a/java/androidmk.go b/java/androidmk.go
index 4c115d5..272a4fd 100644
--- a/java/androidmk.go
+++ b/java/androidmk.go
@@ -696,12 +696,12 @@
 	return []android.AndroidMkEntries{
 		android.AndroidMkEntries{
 			Class:      "APPS",
-			OutputFile: android.OptionalPathForPath(apkSet.packedOutput),
+			OutputFile: android.OptionalPathForPath(apkSet.primaryOutput),
 			Include:    "$(BUILD_SYSTEM)/soong_android_app_set.mk",
 			ExtraEntries: []android.AndroidMkExtraEntriesFunc{
 				func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
 					entries.SetBoolIfTrue("LOCAL_PRIVILEGED_MODULE", apkSet.Privileged())
-					entries.SetString("LOCAL_APK_SET_INSTALL_FILE", apkSet.InstallFile())
+					entries.SetPath("LOCAL_APK_SET_INSTALL_FILE", apkSet.PackedAdditionalOutputs())
 					entries.SetPath("LOCAL_APKCERTS_FILE", apkSet.apkcertsFile)
 					entries.AddStrings("LOCAL_OVERRIDES_PACKAGES", apkSet.properties.Overrides...)
 				},
diff --git a/java/app_set.go b/java/app_set.go
index 6b25638..2e9a4ab 100644
--- a/java/app_set.go
+++ b/java/app_set.go
@@ -55,10 +55,10 @@
 	android.DefaultableModuleBase
 	prebuilt android.Prebuilt
 
-	properties   AndroidAppSetProperties
-	packedOutput android.WritablePath
-	installFile  string
-	apkcertsFile android.ModuleOutPath
+	properties    AndroidAppSetProperties
+	packedOutput  android.WritablePath
+	primaryOutput android.WritablePath
+	apkcertsFile  android.ModuleOutPath
 }
 
 func (as *AndroidAppSet) Name() string {
@@ -78,11 +78,11 @@
 }
 
 func (as *AndroidAppSet) OutputFile() android.Path {
-	return as.packedOutput
+	return as.primaryOutput
 }
 
-func (as *AndroidAppSet) InstallFile() string {
-	return as.installFile
+func (as *AndroidAppSet) PackedAdditionalOutputs() android.Path {
+	return as.packedOutput
 }
 
 func (as *AndroidAppSet) APKCertsFile() android.Path {
@@ -114,11 +114,11 @@
 
 func (as *AndroidAppSet) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	as.packedOutput = android.PathForModuleOut(ctx, ctx.ModuleName()+".zip")
+	as.primaryOutput = android.PathForModuleOut(ctx, as.BaseModuleName()+".apk")
 	as.apkcertsFile = android.PathForModuleOut(ctx, "apkcerts.txt")
 	// We are assuming here that the install file in the APK
 	// set has `.apk` suffix. If it doesn't the build will fail.
 	// APK sets containing APEX files are handled elsewhere.
-	as.installFile = as.BaseModuleName() + ".apk"
 	screenDensities := "all"
 	if dpis := ctx.Config().ProductAAPTPrebuiltDPI(); len(dpis) > 0 {
 		screenDensities = strings.ToUpper(strings.Join(dpis, ","))
@@ -127,11 +127,11 @@
 	// TODO(asmundak): do we support device features
 	ctx.Build(pctx,
 		android.BuildParams{
-			Rule:           extractMatchingApks,
-			Description:    "Extract APKs from APK set",
-			Output:         as.packedOutput,
-			ImplicitOutput: as.apkcertsFile,
-			Inputs:         android.Paths{as.prebuilt.SingleSourcePath(ctx)},
+			Rule:            extractMatchingApks,
+			Description:     "Extract APKs from APK set",
+			Output:          as.primaryOutput,
+			ImplicitOutputs: android.WritablePaths{as.packedOutput, as.apkcertsFile},
+			Inputs:          android.Paths{as.prebuilt.SingleSourcePath(ctx)},
 			Args: map[string]string{
 				"abis":              strings.Join(SupportedAbis(ctx), ","),
 				"allow-prereleased": strconv.FormatBool(proptools.Bool(as.properties.Prerelease)),
@@ -140,6 +140,7 @@
 				"stem":              as.BaseModuleName(),
 				"apkcerts":          as.apkcertsFile.String(),
 				"partition":         as.PartitionTag(ctx.DeviceConfig()),
+				"zip":               as.packedOutput.String(),
 			},
 		})
 }
diff --git a/java/app_set_test.go b/java/app_set_test.go
index adaf71b..03eb667 100644
--- a/java/app_set_test.go
+++ b/java/app_set_test.go
@@ -17,19 +17,20 @@
 import (
 	"fmt"
 	"reflect"
+	"strings"
 	"testing"
 
 	"android/soong/android"
 )
 
 func TestAndroidAppSet(t *testing.T) {
-	ctx, _ := testJava(t, `
+	result := PrepareForTestWithJavaDefaultModules.RunTestWithBp(t, `
 		android_app_set {
 			name: "foo",
 			set: "prebuilts/apks/app.apks",
 			prerelease: true,
 		}`)
-	module := ctx.ModuleForTests("foo", "android_common")
+	module := result.ModuleForTests("foo", "android_common")
 	const packedSplitApks = "foo.zip"
 	params := module.Output(packedSplitApks)
 	if params.Rule == nil {
@@ -41,9 +42,22 @@
 	if s := params.Args["partition"]; s != "system" {
 		t.Errorf("wrong partition value: '%s', expected 'system'", s)
 	}
-	mkEntries := android.AndroidMkEntriesForTest(t, ctx, module.Module())[0]
+
+	android.AssertPathRelativeToTopEquals(t, "incorrect output path",
+		"out/soong/.intermediates/foo/android_common/foo.apk", params.Output)
+
+	android.AssertPathsRelativeToTopEquals(t, "incorrect implicit output paths",
+		[]string{
+			"out/soong/.intermediates/foo/android_common/foo.zip",
+			"out/soong/.intermediates/foo/android_common/apkcerts.txt",
+		},
+		params.ImplicitOutputs.Paths())
+
+	mkEntries := android.AndroidMkEntriesForTest(t, result.TestContext, module.Module())[0]
 	actualInstallFile := mkEntries.EntryMap["LOCAL_APK_SET_INSTALL_FILE"]
-	expectedInstallFile := []string{"foo.apk"}
+	expectedInstallFile := []string{
+		strings.Replace(params.ImplicitOutputs[0].String(), android.OutSoongDir, result.Config.SoongOutDir(), 1),
+	}
 	if !reflect.DeepEqual(actualInstallFile, expectedInstallFile) {
 		t.Errorf("Unexpected LOCAL_APK_SET_INSTALL_FILE value: '%s', expected: '%s',",
 			actualInstallFile, expectedInstallFile)
diff --git a/java/builder.go b/java/builder.go
index ae124a3..e64a61f 100644
--- a/java/builder.go
+++ b/java/builder.go
@@ -120,14 +120,14 @@
 		"extractMatchingApks",
 		blueprint.RuleParams{
 			Command: `rm -rf "$out" && ` +
-				`${config.ExtractApksCmd} -o "${out}" -allow-prereleased=${allow-prereleased} ` +
+				`${config.ExtractApksCmd} -o "${out}" -zip "${zip}" -allow-prereleased=${allow-prereleased} ` +
 				`-sdk-version=${sdk-version} -abis=${abis} ` +
 				`--screen-densities=${screen-densities} --stem=${stem} ` +
 				`-apkcerts=${apkcerts} -partition=${partition} ` +
 				`${in}`,
 			CommandDeps: []string{"${config.ExtractApksCmd}"},
 		},
-		"abis", "allow-prereleased", "screen-densities", "sdk-version", "stem", "apkcerts", "partition")
+		"abis", "allow-prereleased", "screen-densities", "sdk-version", "stem", "apkcerts", "partition", "zip")
 
 	turbine, turbineRE = pctx.RemoteStaticRules("turbine",
 		blueprint.RuleParams{