asLody/VirtualApp · error · java.lang.IllegalArgumentException

Invalid marker:

Error message

Invalid marker: 

What it means

removeSplit() records removal by creating a marker file named '<splitName>.removed' in the stage directory. createRemoveSplitMarker validates that marker name with FileUtils.isValidExtFilename and throws IllegalArgumentException('Invalid marker: ' + markerName) if the resulting split name would produce an illegal filename.

Solutions

1. Pass the bare split name (as it appears in APK split naming, without path or '.apk').
2. Validate with FileUtils.isValidExtFilename(splitName) before calling removeSplit.
3. Normalize the input: strip directories and known extensions before composing the marker name.

Example fix

// before
session.removeSplit("/sdcard/splits/split_config.xxhdpi.apk"); // IllegalArgumentException

// after
String split = new File("/sdcard/splits/split_config.xxhdpi.apk").getName();
split = split.substring(0, split.length() - ".apk".length());
if (FileUtils.isValidExtFilename(split + ".removed")) {
    session.removeSplit(split);
}

String marker = splitName + ".removed";
if (!FileUtils.isValidExtFilename(marker)) {
    throw new IllegalArgumentException("Invalid split name: " + splitName);
}

boolean isValidSplitName(String s) {
    return s != null && !s.isEmpty() && FileUtils.isValidExtFilename(s + ".removed");
}

try {
    session.removeSplit(splitName);
} catch (IllegalArgumentException e) {
    // sanitize: strip path/extension and retry once
}

When it happens

Trigger: Calling session.removeSplit(splitName) where splitName contains '/', '\\', or other characters invalid in an ext filename, so 'splitName + REMOVE_SPLIT_MARKER_EXTENSION' fails validation.

Common situations: Passing fully-qualified APK paths or resource URIs instead of bare split names (e.g. 'config.arm64' vs 'base.apk'); names built from untrusted input; typos including slashes in split identifiers.

Understand the failure class

Background: "invalid id" errors: invalid identifier format — why libraries reject IDs before lookup, and how to fix them — this error's family across 37 libraries.

Related errors

• Invalid name:
• account is null
• Must specify package name to remove a split
• Exactly one of stageDir or stageCid stage must be set
• Unable to create application

AI-assisted analysis of asLody/VirtualApp@666fefcb5d (2026-09-09). Data as JSON: /api/errors/f8d79a9209b54191. Report an issue: GitHub.

Appendix: source

Thrown at VirtualApp/lib/src/main/java/com/lody/virtual/server/pm/installer/PackageInstallerSession.java:366

    }

    @Override
    public void removeSplit(String splitName) throws RemoteException {
        if (TextUtils.isEmpty(params.appPackageName)) {
            throw new IllegalStateException("Must specify package name to remove a split");
        }
        try {
            createRemoveSplitMarker(splitName);
        } catch (IOException e) {
            throw new IllegalStateException(e);
        }
    }

    private void createRemoveSplitMarker(String splitName) throws IOException {
        try {
            final String markerName = splitName + REMOVE_SPLIT_MARKER_EXTENSION;
            if (!FileUtils.isValidExtFilename(markerName)) {
                throw new IllegalArgumentException("Invalid marker: " + markerName);
            }
            final File target = new File(resolveStageDir(), markerName);
            target.createNewFile();
            Os.chmod(target.getAbsolutePath(), 0 /*mode*/);
        } catch (ErrnoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public void close() throws RemoteException {
        if (mActiveCount.decrementAndGet() == 0) {
            mCallback.onSessionActiveChanged(this, false);
        }
    }

    @Override
    public void commit(IntentSender statusReceiver) throws RemoteException {

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