is_focused_app.rb

# Implement is focused app using dumpsys window windows
def is_focused_app app
  output = `#{adb_command} shell dumpsys window windows`
  return false if output.nil?

  target = nil

  output.each_line do |line|
    if line.include? 'mFocusedApp'
      target = line
      break
    end
  end

  return false if target.nil?
  focused = target.match(/\/\.([^}]+)}/)

  return false if focused.nil?
  focused[1] == app
end

puts is_focused_app 'MyActivity'

@jonasmaturana I think your focused_activity is better. Then something like this can be written:

def wait_for_activity activity
  retriable :tries => 5, :interval => 2 do
    focused = focused_activity
    raise "Activity #{activity} not found. Current activity is #{focused}" if focused != activity
  end
end