strings.xml

<resources>
  <string name="title_activity_login">Sign in</string>

  <!-- Strings related to login -->
  <string name="activity_login_prompt_nick">Nickname</string>
  <string name="activity_login_prompt_password">Password</string>
  <string name="activity_login_action_sign_in">Sign in</string>
  <string name="activity_login_action_register">Register</string>
  <string name="activity_login_action_sign_in_short">Sign in</string>
  <string name="activity_login_error_invalid_nickname">This nickname is invalid</string>
  <string name="activity_login_error_invalid_password">This password is too short</string>
  <string name="activity_login_error_unauthorized">Unable to
    access, check your nickname and password</string>
  <string name="activity_login_error_field_required">This field is required</string>
<string name="activity_login_error_invalid_email">This email is invalid</string>
  <string name="activity_login_error_nickname_already_present">Sorry, the nickname is already present</string>
</resources>