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android {
    .....

    flavorDimensions "appType" //Can be anything, just identifier
    productFlavors {
        Client {
            dimension "appType"
            applicationIdSuffix ".client" //Will be added to package name of the app, making the app unique

            //More can be added like

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class ProductLoadingStateAdapter :
    LoadStateAdapter<ProductLoadingStateAdapter.LoadStateViewHolder>() {

    override fun onBindViewHolder(holder: LoadStateViewHolder, loadState: LoadState) {

        val progress = holder.itemView.progress_bar_item

        val txtErrorMessage = holder.itemView.error_msg_item
        

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private fun isInternetAvailable(context: Context): Boolean {
        var result = false
        val connectivityManager =
            context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            val networkCapabilities = connectivityManager.activeNetwork ?: return false
            val actNw =
                connectivityManager.getNetworkCapabilities(networkCapabilities) ?: return false
            result = when {
                actNw.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> true

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public class ListActivity extends AppCompatActivity implements RecyclerViewAdapter.OnItemClickListener {
    private RecyclerViewAdapter recyclerViewAdapter;
    private FirebaseFirestore db = FirebaseFirestore.getInstance();
    private Context context;
    private TravelDeal clickedItem;
    private FirestoreRecyclerOptions<TravelDeal> options;
    private CollectionReference dbRef;
    private FirebaseAuth mAuth = FirebaseAuth.getInstance();
    private FirebaseUser user = mAuth.getCurrentUser();
    private MenuItem next;

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package com.example.retrofitpractice;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

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package com.example.travelmantics;

import android.content.Intent;
import android.content.res.Resources;
import android.net.Uri;
//import android.support.annotation.NonNull;
//mport android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;

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 private void signIn() {

        List<AuthUI.IdpConfig> providers = Arrays.asList(
                new AuthUI.IdpConfig.EmailBuilder().build(),
                new AuthUI.IdpConfig.GoogleBuilder().build());

        startActivityForResult(
                AuthUI.getInstance()
                        .createSignInIntentBuilder()
                        .setAvailableProviders(providers)

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 private void signIn() {

        List<AuthUI.IdpConfig> providers = Arrays.asList(
                new AuthUI.IdpConfig.EmailBuilder().build(),
                new AuthUI.IdpConfig.GoogleBuilder().build());

        startActivityForResult(
                AuthUI.getInstance()
                        .createSignInIntentBuilder()
                        .setAvailableProviders(providers)

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package com.example.travelmantics;

import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;

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public class ProfileActivity extends Fragment {
    private static final int CHOOSE_IMAGE = 101;
    Context context;
    ImageView imageView;
    EditText editTextName, editTextEmail, editTextPhone, editTextAddress, editTextCity;
    Button update;

    private static final String KEY_EMAIL = "email";
    private static final String KEY_NUMBER = "number";
    private static final String KEY_ADDRESS = "address";