snippet.rb

#!/usr/bin/env ruby

#Author - Levi Notik

# Pass the root project path in which to see
# which Activities you've forgotten to add to your manifest

@activities = Array.new
@project_files = Array.new

def find_subactivities(super_class)
  @project_files.each do |file|
    file = File.read(file)
    if file =~ /public class (\S+) extends #{super_class}/ 
      @activities.push($1)
      find_subactivities($1)
    end
  end
end

ARGV.each do |path|
  files = Dir.glob(File.join(path, '**', "*.java"), File::FNM_CASEFOLD).each do |f| 
    class_file = File.read(f)
    if (class_file =~ /public class (\S+) extends Activity/)
      @activities.push($1)
    end
  end

  project_files = files

  found_activity = String.new
  @activities.each do |activity| 
    files.each do |f|
        file = File.read(f)
        if file =~ /public class (\S+) extends #{activity}/
          found_activity = $1
          @activities.push(found_activity)
        find_subactivities(found_activity)
      end
    end
  end
  
  project_root = File.join(path, "AndroidManifest.xml")
  manifest = File.read(project_root)
  not_declared_in_manifest = Array.new
  @activities.each do |activity|
    unless manifest =~ /\b#{activity}\b/
      not_declared_in_manifest.push(activity)
    end
  end
 unless not_declared_in_manifest.empty? 
   puts "The following Activities may need to be added to the Manifest"
   puts not_declared_in_manifest
 end

end