Pass platform version name as --version-name for framework-res.apk

framework-res.apk should get the platform version name ("9") as
--version-name, not the SDK version ("28").  It will get copied
to compileSdkVersionCodename in APKs compiled against it.

Bug: 78324052
Test: aapt dump badging $OUT/system/framework/framework-res.apk | grep -i version
Change-Id: I34a601cb2c14f66199066e7d598862108da0b950

3 files changed, 7 insertions, 2 deletions

diff --git a/android/config.go b/android/config.go
index 549abe91..fafed6b0 100644
--- a/android/config.go
+++ b/android/config.go
@@ -468,6 +468,10 @@ func (c *config) ResourceOverlays() []string {
 	return *c.productVariables.ResourceOverlays
 }
 
+func (c *config) PlatformVersionName() string {
+	return String(c.productVariables.Platform_version_name)
+}
+
 func (c *config) PlatformSdkVersionInt() int {
 	return *c.productVariables.Platform_sdk_version
 }
diff --git a/android/variable.go b/android/variable.go
index 9d9830ea..f4aaec7a 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -127,6 +127,7 @@ type productVariables struct {
 	BuildNumberFromFile *string `json:",omitempty"`
 	DateFromFile        *string `json:",omitempty"`
 
+	Platform_version_name             *string  `json:",omitempty"`
 	Platform_sdk_version              *int     `json:",omitempty"`
 	Platform_sdk_codename             *string  `json:",omitempty"`
 	Platform_sdk_final                *bool    `json:",omitempty"`
diff --git a/java/aar.go b/java/aar.go
index 9e5cddb6..66f1cab6 100644
--- a/java/aar.go
+++ b/java/aar.go
@@ -150,8 +150,8 @@ func (a *aapt) aapt2Flags(ctx android.ModuleContext, sdkVersion string) (flags [
 		if ctx.ModuleName() == "framework-res" {
 			// Some builds set AppsDefaultVersionName() to include the build number ("O-123456").  aapt2 copies the
 			// version name of framework-res into app manifests as compileSdkVersionCodename, which confuses things
-			// if it contains the build number.  Use the DefaultAppTargetSdk instead.
-			versionName = ctx.Config().DefaultAppTargetSdk()
+			// if it contains the build number.  Use the PlatformVersionName instead.
+			versionName = ctx.Config().PlatformVersionName()
 		} else {
 			versionName = ctx.Config().AppsDefaultVersionName()
 		}