使用Fastlane自动递增Google Play版本号时遇类型转换错误

问题场景 #

使用Fastlane实现Google Play版本号自动递增时，执行Fastfile触发类型转换错误，错误出现在第20行的版本码获取逻辑。

错误信息 #

Error in your Fastfile at line 20
   18:      #end
   19:  
=> 20:      current_version_code = google_play_info[:version_codes].max.to_i
   21:  
   22:      new_version_code = current_version_code + 1
no implicit conversion of Symbol into Integer

关联Fastfile代码 #

default_platform(:android)

platform :android do
  desc "Deploy a new version to the Google Play internal track"
  lane :internal do
    # Fetching the current version code from Google Play
    google_play_info = google_play_track_version_codes(
      
      track: "internal"
    )

    # Debug output to inspect google_play_info
    UI.message("Google Play Info: #{google_play_info}")

    #if google_play_info[:version_codes].nil? || google_play_info[:version_codes].empty?
    #  UI.user_error!("Could not fetch version codes from Google Play")
    #end

    current_version_code = google_play_info[:version_codes].max.to_i

    new_version_code = current_version_code + 1

    # Define a helper method to increment version code in build.gradle
    def increment_version_code_in_gradle(new_version_code)
      gradle_file_path = "./app/build.gradle"
      gradle_content = File.read(gradle_file_path)
      updated_content = gradle_content.gsub(/versionCode\s+\d+/) do |match|
        "versionCode #{new_version_code}"
      end
      File.write(gradle_file_path, updated_content)
    end

    # Increment the version code in build.gradle
    increment_version_code_in_gradle(new_version_code)

    # Build the AAB (Android App Bundle)
    gradle(
      task: "bundle",
      build_type: "Release"
    )

    # Upload the AAB to the internal track on Google Play
    upload_to_play_store(
      track: "internal",
      aab: "./app/build/outputs/bundle/release/app-release.aab",
      
    )
  end
end

问题原因 #

google_play_track_version_codes action的返回值是数组类型，每个元素对应一个track的哈希结构（包含track和version_codes等字段）。你直接用哈希的键值访问方式google_play_info[:version_codes]操作数组，而数组仅支持整数索引，因此触发“Symbol无法转换为Integer”的错误。

修复方案 #

修改版本码获取逻辑，先从返回数组中定位到目标track，再提取版本码：

# Fetching the current version code from Google Play
google_play_info = google_play_track_version_codes(
  track: "internal"
)

# Debug output to inspect google_play_info
UI.message("Google Play Info: #{google_play_info}")

# 从返回数组中找到internal track的信息
target_track = google_play_info.find { |track| track[:track] == "internal" }

# 检查track是否存在，避免空值错误
if target_track.nil? || target_track[:version_codes].nil? || target_track[:version_codes].empty?
  UI.user_error!("Could not fetch valid version codes from Google Play internal track")
end

# 获取当前最大版本码
current_version_code = target_track[:version_codes].max.to_i
new_version_code = current_version_code + 1

替换原Fastfile中对应代码段即可解决问题。

内容的提问来源于stack exchange，提问作者Shahid Mehmood