Setting Properties to Build for an Android Device
An optional property file can be provided to sign for an Android device. If it exists, it should point to a text file stored under project_root/android_signing.properties that contains the following four properties in standard key=value Java properties format (see the format used for sdk.properties). This file can be kept out of source control to protect passwords and keyfiles.
android.release.keystore.file Location of the keystore file. It can either be relative or absolute to the project's root directory. Use "/" for path separators, even on Windows. This file can be kept out of source control to protect passwords and keyfiles.
android.release.keystore.password Passphrase used to unlock the keystore.
android.release.key.alias Alias of the key for signing this build.
android.release.key.password Password used with this key alias.