Locate the Android release configuration
Inspect the project's android/ directory, application module and Gradle properties or secret references. Follow the instructions for the installed React Native version rather than mixing a current project with an old template's build file. React Native publishing guide.
Determine whether the credential is for local APK distribution or Play uploads. For Play App Signing, the upload key can differ from the certificate on the installed store build.
Store the credential outside source control
Provide the keystore path, alias and passwords through a protected local configuration or CI secret system. Do not commit a private keystore just because it makes another developer's build easier. Keep a documented recovery copy with restricted access.
A public certificate fingerprint can be recorded in the release ledger; the private key and passwords should not appear there. Android signing.
Bind the intended variant
Check the release build type and any product flavors. A configuration that signs one variant correctly can leave another unsigned or using a debug key. Build the artifact for the intended application ID and inspect its actual certificate afterward.
For a generated APK, a verification step is:
apksigner verify --verbose --print-certs app-release.apk
For an AAB, use the bundle's appropriate signing inspection path; apksigner itself is an APK tool.
Test JavaScript packaging and certificate-bound features
A signed APK still needs its JavaScript bundle and native dependencies packaged correctly. Test startup without a Metro development server. Then test Google sign-in, Maps or other services using the certificate appropriate to the installation channel.
If authentication works locally but not through Play, compare certificate fingerprints before rewriting the JavaScript login logic.
Keep release evidence together
Archive the version code, source revision, React Native version, Android toolchain, signing fingerprint and relevant mapping/symbol files. Test an update over a previous release as well as a clean install.
APKLint's React Native analyzer can help identify packaged framework structure, while the certificate checker can display public metadata. Neither configures your Gradle signing block or guarantees that a Play upload, update or authentication flow will succeed.
Sources and further reading
Reference review: 22 September 2026. Examples illustrate the workflow; check your installed versions, release artifact and account-specific Console requirements before applying them. This guide is not a claim that APKLint executed your project or verified your private account.
Android inspection tools and practical release guides. About APKLint · Report a correction
