Method Detail

• putString

   abstract Unit putString(String key, String value)

• getString

   abstract String getString(String key)

• remove

   abstract Unit remove(String key)

• clear

   abstract Unit clear()

• putStringSync

   Unit putStringSync(String key, String value)

  Persist a value synchronously so it survives process kill (e.g. close app before async putString has flushed). Use for critical keys like install-sent flag.