Android: Conflict after migrating to EAS

[nsoeth]

Hi,

we used to build the app with turtle-cli and a custom key store. We now migrated to EAS using a custom update server. Everything works fine, except for the app update on Android. When I have the old version and want to update to the new version, I get the error:

“The Package Conflicts With An Existing Package By The Same Name Error”

My credentials.json looks like this:

{
  "android": {
    "keystore": {
      "keystorePath": ".pathTo/keystore.jks",
      "keystorePassword": "keystorepassword",
      "keyAlias": "keyalias",
      "keyPassword": "keypassword"
    }
  },
  "ios": {
    "provisioningProfilePath": "pathTo/profile.mobileprovision",
    "distributionCertificate": {
      "path": "pathTo/cert.p12",
      "password": "password"
    }
  }
}

The values are correctly substituted and it works for iOS.

My EAS.json (I know, a lot of unecessary boilerplate):

{
  "cli": {
    "version": ">= 3.6.0"
  },
  "build": {
    "development": {
      "developmentClient": true,
      "distribution": "internal",
      "ios": {
        "resourceClass": "m1-medium",
        "credentialsSource": "local"
      },
      "android": {
        "credentialsSource": "local"
      },
      "channel": "development"
    },
    "preview": {
      "distribution": "internal",
      "ios": {
        "resourceClass": "m1-medium",
        "credentialsSource": "local"
      },
      "android": {
        "credentialsSource": "local"
      },
      "channel": "preview"
    },
    "production": {
      "ios": {
        "resourceClass": "m1-medium",
        "credentialsSource": "local"
      },
      "android": {
        "credentialsSource": "local"
      },
      "channel": "production"
    }
  },
  "submit": {
    "production": {}
  }
}

and we run the command (Azure DevOps pipeline)

eas build --platform android --non-interactive --local --output $(build.artifactstagingdirectory)/myfile.aab

When I then publish the .aab to Microsoft AppCenter and want to update, I get the error. If I delete the app, I can install it and also update it with newer versions from my build process.

Am I missing something?

[nsoeth]

Answering my own issue:
we generated an .aab using EAS. When uploading it to AppCenter, the .apk was generated by AppCenter therefore having a different certificate. After adding

"buildType": "apk"

as a property to “build” → “channel” → “android” in the eas.json and changing the output to “.apk” in the eas build command, it works now.