CodyEngel

public class DisposableManager {

    private static CompositeDisposable compositeDisposable;

    public static void add(Disposable disposable) {
        getCompositeDisposable().add(disposable);
    }

    public static void dispose() {
        getCompositeDisposable().dispose();

CodyEngel

public class CustomDialog extends DialogFragment {

    TextView tvHeader,
            tvContent;

    Button bConfirm,
            bCancel;

    private DialogListener mDialogListener;

CodyEngel

Simple RecyclerView Divider

Simple Horizontal Divider Item Decoration for RecyclerView

    mRecyclerView.addItemDecoration(new SimpleDividerItemDecoration(
            getApplicationContext()
    	));

NOTE: Add item decoration prior to setting the adapter

CodyEngel

ArrayList<NavigationItem> navigationItems = new ArrayList<FragmentNavigationItem>();
navigationItems.add(new FragmentNavigationItem(getString(R.string.nav_item1),
    ContextCompat.getDrawable(getActivity(), R.drawable.nav_item1),
    new NavigationItem1Fragment()));
navigationItems.add(new FragmentNavigationItem(getString(R.string.nav_item2),
    ContextCompat.getDrawable(getActivity(), R.drawable.nav_item1),
    new NavigationItem2Fragment()));
navigationItems.add(new FragmentNavigationItem(getString(R.string.nav_item3),
    ContextCompat.getDrawable(getActivity(), R.drawable.nav_item3),
    new NavigationItem3Fragment()));

CodyEngel

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingTop="@dimen/activity_padding_small"
    android:paddingBottom="@dimen/activity_padding_small">

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"

CodyEngel

public class NavigationListAdapter extends ArrayAdapter<NavigationItem> {

    private Context mContext;
    private ArrayList<NavigationItem> mItems;
    private LayoutInflater mLayoutInflater;

    public NavigationListAdapter(Context context, ArrayList<NavigationItem> items) {
        super(context, 0, items);
        mContext = context;
        mItems = items;

CodyEngel

public class NavigationItem {

    Drawable mIcon;
    Fragment mFragment;
    String mTitle;

    public NavigationItem(String title, Drawable icon, Fragment fragment) {
        mTitle = title;
        mIcon = icon;
        mFragment = fragment;

CodyEngel

public class NavigationItem {

    Drawable mIcon;
    FragmentTransaction mFragmentTransaction;
    String mTitle;

    public NavigationItem(String title, Drawable icon, FragmentTransaction fragmentTransaction) {
        mTitle = title;
        mIcon = icon;
        mFragmentTransaction = fragmentTransaction;

CodyEngel

public static List<int> returnPrimeNumbersToN(int n)
{
    List<int> primeNumbers = new List<int>();

    // populate list
    for (int i = 2; i <= n; i++)
    {
        primeNumbers.Add(i);
    }

CodyEngel

public static List<int> returnPrimeNumbersToN(int n)
{
    List<int> primeNumbers = new List<int>();
    primeNumbers.Add(2);
    primeNumbers.Add(3);

    for (int i = 5; i <= n; i += 2)
    {
        bool test = true;
        int sqrt = Convert.ToInt32(Math.Sqrt(i));