Fastlane构建Android签名APK时increment_version_code报错

Hey there, let's tackle that increment_version_code error you're hitting when running fastlane beta for your Android release. First, let's address the warning in your log (since it might contribute to unexpected behavior), then dive into the core version code issue.

1. Fix the bundle exec Warning First #

Fastlane detected a Gemfile in your project directory, which means you're using bundled dependencies. Skipping bundle exec can lead to conflicts between your project's specified Fastlane version and the global one installed on your machine. Here's how to fix it:

• First, ensure all bundled dependencies are installed:

  bundle install
  

• From now on, run your Fastlane commands with bundle exec prefix:

  bundle exec fastlane beta
  

2. Troubleshoot the increment_version_code Error #

This error typically stems from misconfiguration in your Fastfile or build setup. Let's go through the most common fixes:

Check Your Fastfile Setup #

Make sure your beta lane correctly calls the increment_version_code action before building the release APK. The action needs to update the version code first, then let assembleRelease use the new value. Example correct setup:

lane :beta do
  # Increment version code first
  increment_version_code(
    android_package_name: "com.your.app.package" # Replace with your actual package name
  )
  # Then build the signed release APK
  assembleRelease
  # Add your Google Play deployment steps here (e.g., upload_to_play_store)
end

Double-check that android_package_name matches exactly what's in your app's build.gradle file.

Verify build.gradle Configuration #

Fastlane's increment_version_code relies on being able to find and modify the versionCode value in your app-level build.gradle (or build.gradle.kts):

• For Groovy build.gradle:

  android {
    defaultConfig {
        versionCode 1 // This should be a static integer, not a dynamic variable Fastlane can't parse
        versionName "1.0.0"
        // ... other configs
    }
  }
  

• If you're using a dynamic version code (e.g., reading from a file or environment variable), Fastlane won't be able to increment it automatically. You'll need to adjust your setup to use a static value, or use Fastlane's gradle_properties action to manage versioning via a properties file instead.

Update Fastlane to the Latest Version #

Outdated Fastlane versions can have bugs related to version code incrementing. Update via bundler:

bundle update fastlane

Then re-run your command with bundle exec fastlane beta.

Check File Permissions #

Ensure Fastlane has write access to your app's build.gradle file. On Mac, this is usually not an issue if you're running commands from your project directory, but if you're using a CI environment, confirm the user executing the command has proper permissions.

After trying these steps, run the command again and verify that the versionCode in your build.gradle is incremented, and the release APK uses the updated version before deploying to Google Play.

内容的提问来源于stack exchange，提问作者Shubham Sejpal