Not able to integrate push notification in Native code

[dhruvpredis]

Getting cannot find symbol while initializing. Can you give me some reference for the react native setup

Error: /Users/devendrasathaye/Desktop/predis/free-app-code/android/app/src/main/java/com/predis/app/MainActivity.java:27: error: cannot find symbol
private final Analytics analytics = MainApplication.analytics;
^
symbol: class Analytics
location: class MainActivity
/Users/devendrasathaye/Desktop/predis/free-app-code/android/app/src/main/java/com/predis/app/MainApplication.java:91: error: cannot find symbol
analytics = Parcelvoy.initialize(this, apiKey, urlEndpoint);
^
symbol: method initialize(MainApplication,String,String)
location: class Parcelvoy
/Users/devendrasathaye/Desktop/predis/free-app-code/android/app/src/main/java/com/predis/app/MainActivity.java:27: error: analytics has private access in MainApplication
private final Analytics analytics = MainApplication.analytics;
^

[dhruvpredis]

Imports
// parcelvoy
import com.parcelvoy.android.Config;
import com.parcelvoy.android.Parcelvoy;

Declared a private static instance in MainApplication class
private static Parcelvoy analytics;

Inside onCreate() tried to intialize:
analytics = Parcelvoy.initialize(this, apiKey, urlEndpoint);