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[ 
  {name: 'Afghanistan', code: 'AF'}, 
  {name: 'Åland Islands', code: 'AX'}, 
  {name: 'Albania', code: 'AL'}, 
  {name: 'Algeria', code: 'DZ'}, 
  {name: 'American Samoa', code: 'AS'}, 
  {name: 'AndorrA', code: 'AD'}, 
  {name: 'Angola', code: 'AO'}, 
  {name: 'Anguilla', code: 'AI'}, 
  {name: 'Antarctica', code: 'AQ'}, 

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Bridging Native & React for iOS & Android

js -> native

• Simple Example
• Callbacks
• Promises
• Properties

native -> js

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Taken from 
https://www.programcreek.com/java-api-examples/?code=lujianzhao/AndroidBase/AndroidBase-master/AndroidBase/src/main/java/com/ljz/base/common/diskcache/DiskLruCacheHelper.java#

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.Drawable;
import android.os.Environment;
import android.util.Log;

import com.jakewharton.disklrucache.DiskLruCache;

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/*
 * Copyright (c) 2017 Emil Davtyan
 * 
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:

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public Object onRetainNonConfigurationInstance() {
   return this;
}
Then in YourActivity's onCreate()

public void onCreate(Bundle savedState)
{
   YourActivity prevActivity = (YourActivity)getLastNonConfigurationInstance();
   if(prevActivity!= null) { 

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import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.media.ExifInterface;
import android.os.AsyncTask;
import android.os.Environment;

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package com.alejandrogr.gists.ofylistref;

import com.googlecode.objectify.Ref;
import com.googlecode.objectify.annotation.Entity;
import com.googlecode.objectify.annotation.Id;
import com.googlecode.objectify.annotation.Ignore;
import com.googlecode.objectify.annotation.Load;
import com.googlecode.objectify.annotation.OnLoad;
import java.util.ArrayList;
import java.util.List;

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  compile 'org.jsoup:jsoup:1.10.2'
  
    Document doc;
        try {
            doc = Jsoup.connect("https://jsoup.org/").followRedirects(true).get();

            //  doc=Jsoup.parse(new File("/home/gufran/Desktop/JSoupStudy/StumbleUpon - StumbleUpon.html"),null);
            // get title of the page
            String title = doc.title();

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For Class

/**
* <h1>Hello, World!</h1>
* The HelloWorld program implements an application that
* simply displays "Hello World!" to the standard output.
* <p>
* Giving proper comments in your program makes it more
* user friendly and it is assumed as a high quality code.
* 

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public class ShowHideToggleButton extends LinearLayout {

    Context context;

    public ShowHideToggleButton(final Context context) {
        this(context, null);
    }

    public ShowHideToggleButton(Context context, AttributeSet attrs) {
        this(context, attrs, 0);