AndroidJava SDK

对于 Android，这里是我们建议用于生成，持久化和检索 UUID 的代码。没有构造函数接受 UUID 作为参数，因此你必须首先实例化 Pubnub 对象，然后使用 setter 提供 UUID。

// creating the Pubnub connection object with minimal args
Pubnub pubnub = new Pubnub(pubKey, subKey);

// get the SharedPreferences object using private mode 
// so that this uuid is only used/updated by this app 
SharedPreferences sharedPrefs = getActivity().getPreferences(Context.MODE_PRIVATE);

// get the current pn_uuid value (first time, it will be null)
String uuid = getResources().getString(R.string.pn_uuid);

// if uuid hasn’t been created & persisted, then create
// and persist to use for subsequent app loads/connections 
if (uuid == null || uuid.length == 0) {
    // PubNub provides a uuid generator method but you could 
    // use your own custom uuid, if required
    uuid = pubnub.uuid();
    SharedPreferences.Editor editor = sharedPrefs.edit();
    editor.putString(getString(R.string.pn_uuid), uuid); 
    editor.commit();
}

// set the uuid for the pubnub object
pubnub.setUUID(uuid);