Firebase update check provider

ForceUpdateChecker.java

package easydo.ithebk.listener;

import android.content.Context;
import android.support.annotation.NonNull;

import com.google.firebase.remoteconfig.FirebaseRemoteConfig;

import easydo.ithebk.BuildConfig;

/**
 * Created by bharath on 8/5/17.
 */

public class ForceUpdateChecker {

    public static final String KEY_UPDATE_REQUIRED = "force_update_required";
    public static final String KEY_APP_VERSION_CODE = "google_play_app_version_code";
    public static final String KEY_PLAY_WHATS_NEW_TEXT = "play_whats_new_text";
    public static final String PLAY_WHATS_NEW_TEXT_DEFAULT = "Bug fixes";
    private static final String TAG = ForceUpdateChecker.class.getSimpleName();
    private OnUpdateNeededListener onUpdateNeededListener;
    private Context context;

    public ForceUpdateChecker(@NonNull Context context,
                              OnUpdateNeededListener onUpdateNeededListener) {
        this.context = context;
        this.onUpdateNeededListener = onUpdateNeededListener;
    }

    public static Builder with(@NonNull Context context) {
        return new Builder(context);
    }

    public void check() {
        final FirebaseRemoteConfig remoteConfig = FirebaseRemoteConfig.getInstance();
        if (remoteConfig.getBoolean(KEY_UPDATE_REQUIRED)) {
            String playStoreVersionConfig = remoteConfig.getString(KEY_APP_VERSION_CODE);
            int appVersion = BuildConfig.VERSION_CODE;
            String whatsNew = remoteConfig.getString(KEY_PLAY_WHATS_NEW_TEXT);
            ;
            int playStoreVersion;
            try {
                playStoreVersion = Integer.parseInt(playStoreVersionConfig);
            } catch (NumberFormatException e) {
                playStoreVersion = 0;
            }
            System.out.println("playStoreVersion version:" + playStoreVersion);
            System.out.println("App version:" + appVersion);
            if (playStoreVersion != 0 && playStoreVersion > appVersion
                    && onUpdateNeededListener != null) {
                onUpdateNeededListener.onUpdateNeeded(whatsNew);
            }
        }

    }

    public interface OnUpdateNeededListener {
        void onUpdateNeeded(String updateUrl);
    }

    public static class Builder {

        private Context context;
        private OnUpdateNeededListener onUpdateNeededListener;

        public Builder(Context context) {
            this.context = context;
        }

        public Builder onUpdateNeeded(OnUpdateNeededListener onUpdateNeededListener) {
            this.onUpdateNeededListener = onUpdateNeededListener;
            return this;
        }

        public ForceUpdateChecker build() {
            return new ForceUpdateChecker(context, onUpdateNeededListener);
        }

        public ForceUpdateChecker check() {
            ForceUpdateChecker forceUpdateChecker = build();
            forceUpdateChecker.check();

            return forceUpdateChecker;
        }
    }
}