microg/GmsCore · error · AssetPackException

APP_UNAVAILABLE

APP_UNAVAILABLE

Error message

e.message

What it means

getAppVersionCode wraps PackageManager.NameNotFoundException into AssetPackException(APP_UNAVAILABLE, e.message). The message surfaced ('e.message') is the underlying NameNotFoundException text, typically the package name that could not be resolved. It means the queried package is not installed on the device.

Solutions

1. Verify the package name spelling and that the app is installed before querying its version code
2. Catch AssetPackException with APP_UNAVAILABLE and prompt install via Play
3. Re-check installation state at the moment of the call (handle races)
4. For asset packs, ensure the base app is installed and Play Core is current

Example fix

// before
val versionCode = getAppVersionCode(context, packageName)!!
// after
try {
    val versionCode = getAppVersionCode(context, packageName)
} catch (e: AssetPackException) {
    if (e.errorCode == AssetPackErrorCode.APP_UNAVAILABLE) {
        // trigger install / show unavailable state
    }
}

fun isPackageInstalled(pm: PackageManager, name: String) =
    try { pm.getPackageInfo(name, 0); true } catch (e: PackageManager.NameNotFoundException) { false }

try {
    val code = getAppVersionCode(context, packageName)
} catch (e: AssetPackException) {
    if (e.errorCode == AssetPackErrorCode.APP_UNAVAILABLE) {
        // route user to Play Store install
    }
}

When it happens

Trigger: Calling getAppVersionCode for a packageName that has no PackageInfo — i.e., getPackageInfo throws PackageManager.NameNotFoundException.

Common situations: Play Asset Pack requested for an app that is not installed; typo in package name; instant/asset module delivered before the base app installs; uninstall between check and query.

Understand the failure class

Background: 'Could not be found', 'does not exist', 'not found in database': the resource-not-found family when an ID, slug, key, or URI lookup comes back empty — this error's family across 20 libraries.

Related errors

• IntegrityErrorCode.NONCE_TOO_LONG
• IntegrityErrorCode.NONCE_TOO_SHORT
• Missing package name
• A path must start with a single / .
• Access denied, missing google package permission for

AI-assisted analysis of microg/GmsCore@157c9d86ac (2026-09-06). Data as JSON: /api/errors/0b86bd89db4feb21. Report an issue: GitHub.

Appendix: source

Thrown at vending-app/src/main/kotlin/com/google/android/finsky/extensions.kt:52

import org.microg.vending.billing.GServices
import org.microg.vending.billing.core.GooglePlayApi
import org.microg.vending.billing.core.HttpClient
import java.io.File
import java.util.Collections

const val KEY_MODULE_NAME = "module_name"

const val TAG_REQUEST = "asset_module"

private const val ASSET_MODULE_DELIVERY_URL = "https://play-fe.googleapis.com/fdfe/assetModuleDelivery"

private const val TAG = "AssetModuleRequest"

fun getAppVersionCode(context: Context, packageName: String): Long? {
    return try {
        PackageInfoCompat.getLongVersionCode(context.packageManager.getPackageInfo(packageName, 0))
    } catch (e: PackageManager.NameNotFoundException) {
        throw AssetPackException(AssetPackErrorCode.APP_UNAVAILABLE, e.message)
    }
}

fun <T> Bundle?.get(key: BundleKeys.RootKey<T>): T? = if (this == null) null else BundleKeys.get(this, key)
fun <T> Bundle?.get(key: BundleKeys.RootKey<T>, def: T): T = if (this == null) def else BundleKeys.get(this, key, def)
fun <T> Bundle.put(key: BundleKeys.RootKey<T>, v: T) = BundleKeys.put(this, key, v)
fun <T> Bundle.put(key: BundleKeys.PackKey<T>, packName: String, v: T) = BundleKeys.put(this, key, packName, v)
fun <T> Bundle.put(key: BundleKeys.SliceKey<T>, packName: String, sliceId: String, v: T) = BundleKeys.put(this, key, packName, sliceId, v)
fun <T> bundleOf(pair: Pair<BundleKeys.RootKey<T>, T>): Bundle = Bundle().apply { put(pair.first, pair.second) }
operator fun Bundle.plus(other: Bundle): Bundle = Bundle(this).apply { putAll(other) }
operator fun <T> Bundle.plus(pair: Pair<BundleKeys.RootKey<T>, T>): Bundle = this + bundleOf(pair)

val Context.assetPacksDir: File
    get() = File(filesDir, "assetpacks")
fun Context.getSessionDir(sessionId: Int) =
    File(assetPacksDir, sessionId.toString())
fun Context.getModuleDir(sessionId: Int, moduleName: String): File =
    File(getSessionDir(sessionId), moduleName)

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