pyadav

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;

import java.util.concurrent.TimeUnit;

import rx.Observable;
import rx.Observer;
import rx.Subscription;

pyadav

import android.content.Context;
import android.os.AsyncTask;

import ai.api.AIConfiguration;
import ai.api.AIDataService;
import ai.api.AIListener;
import ai.api.AIService;
import ai.api.AIServiceException;
import ai.api.model.AIError;

pyadav

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;

/**
 * Dialog helper class
 */
public class DestructiveDialog {
    public DestructiveDialog(Context context, String title, String message, String positive, String negative, final DialogListener dialogListener) {

pyadav

public class LocationHelper{
   public static boolean isLocationEnabled(Context context) {
        LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
        // Check GPS status
        boolean isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
        // Check network status
        boolean isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
        if (!isGPSEnabled && !isNetworkEnabled) {
            return false;
        }

pyadav

public class NetworkUtils{
  public static boolean isNetworkConnected(Context context) {
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
        return (networkInfo != null && networkInfo.isConnectedOrConnecting());
    }
}

pyadav

public class FragmentHelper {
public static boolean isFragmentVisible(WeakReference<Fragment> fragment) {
        if (fragment!=null && fragment.get() != null && fragment.get().getActivity() != null &&
                fragment.get()
                .isVisible()
                && !fragment.get().isRemoving()) {
            return true;
        }
        return false;
    }

pyadav

package <Package Name>;

import android.content.Context;
import android.graphics.Typeface;
import android.text.TextUtils;

public class FontUtils {
    /**
     * Loads the desired font.
     *

pyadav

package <Package Name>;

import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;

import java.util.Map;
import java.util.Set;

public class PreferenceHelper {

pyadav

Observable.merge(Observable.from(getRawSelfPosts()), Observable.from(getRawFriendPosts()), Observable.from(getRawNearbyPosts(activity)))
  .distinct((post) -> post.getObjectId())
  .subscribeOn(Schedulers.io());

getRawPostsObs(activity).map((post) -> postToCardModel(post));

new RxList(getRawPostsObs(activity));

getPostsObs(activity).toList().toBlocking().single();

pyadav

 Observable.just("")
                .subscribeOn(Schedulers.immediate()).observeOn(Schedulers.io()).doOnSubscribe(() -> {
            //tv1.setText("fe");
        })
                .map(x -> {
                    InitVo initVo = qrHttp.init();

                    return initVo;
                })
                .map(initVo -> {