Fethawi Nasih

Fethawi Nasih


A React Native Bottom Sheet with Fully Configurable Options

Bottom Sheet

A performant interactive bottom sheet with fully configurable options 🚀

Initially, this project was a cloned of react-native-scroll-bottom-sheet by @rgommezz ❤️. However, it is been fully re-written to add extra functionalities and simplify the approach.


  • 🌟 Modal presentation view, Bottom Sheet Modal.
  • Smooth interactions & snapping animations.
  • Support FlatList, SectionList, ScrollView & View scrolling interactions.
  • Support React Navigation Integration.
  • Compatible with Reanimated v1 & v2.
  • Compatible with Expo.
  • Written in TypeScript.


Version v1

Link to version 1 branch

This version is written with Reanimated v1

yarn add @gorhom/bottom-sheet
# or
npm install @gorhom/bottom-sheet

⚠️ You need to install react-native-reanimated & react-native-gesture-handler and follow their installation instructions.

Version v2 ( Alpha )

Link to version 2 branch

this version is written with Reanimated v2, although this version is still in alpha phase, yet it provides all version 1 functionalities with the huge performance boost, thanks to Reanimated v2 ❤️

yarn add @gorhom/bottom-sheet@2.0.0-alpha.0
# or
npm install @gorhom/bottom-sheet@2.0.0-alpha.0

⚠️ You need to install react-native-reanimated v2 & react-native-gesture-handler and follow their installation instructions.


import React, { useCallback, useMemo, useRef } from 'react';
import { View, StyleSheet } from 'react-native';
import BottomSheet from '@gorhom/bottom-sheet';

const App = () => {
  // hooks
  const bottomSheetRef = useRef<BottomSheet>(null);

  // variables
  const snapPoints = useMemo(() => ['25%', '50%', '90%'], []);

  // callbacks
  const handleSheetChanges = useCallback((index: number) => {
    console.log('handleSheetChanges', index);
  }, []);

  // renders
  return (
    <View style={styles.container}>

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 24,

export default App;



Initial snap index. You also could provide {-1} to initiate bottom sheet in closed state.

required: NO | type: number | default: 0


Points for the bottom sheet to snap to, points should be sorted from bottom to top. It accepts array of number, string or mix. String values should be a percentage.

required: YES | type: Array<string | number>
example: [100, ‘50%’, ‘90%’]


Top inset value helps to calculate percentage snap points values. usually comes from @react-navigation/stack hook useHeaderHeight or from react-native-safe-area-context hook useSafeArea.

required: NO | type: number | default: 0


To enable or disable user interaction with the sheet.

required: NO | type: boolean | default: true


Snapping animation duration.

required: NO | type: number | default: 500


Snapping animation easing function.

required: NO | type: Animated.EasingFunction | default: Easing.out(Easing.back(0.75))


Animated value to be used as a callback for the position node internally.

required: NO | type: Animated.Value


Animated value to be used as a callback for the position index node internally.

required: NO | type: Animated.Value


Component to be placed as a sheet handle.

required: NO | type: React.FC<BottomSheetHandleProps>


Component to be placed as a background.

required: NO | type: React.FC


Callback when sheet position changed to a provided point.

required: NO | type: (index: number) => void


A scrollable node or normal view.

required: YES | type: () => React.ReactNode | React.ReactNode[] | React.ReactNode



Snap to one of the provided points from snapPoints.

type: (index: number) => void


Snap to the maximum provided point from snapPoints.

type: () => void


Snap to the minimum provided point from snapPoints.

type: () => void


Close the bottom sheet.

type: () => void



The library provide useBottomSheet hook to provide the bottom sheet methods, anywhere inside the sheet content.

type: BottomSheetMethods


This library provides a pre-integrated views that utilise an internal functionalities with the bottom sheet to allow smooth interactions. These views i called them Scrollables and they are:

To Do

  • [x] Add Reanimated v2 support.
  • [ ] Add tablets support.
  • [ ] Add Bounce support.


How this library differ from reanimated-bottom-sheet or react-native-scroll-bottom-sheet?

This library was built to provide the most native-like experience and could fit any use-case that developers wants it to be.

While both libraries providing similar experience, but they still missing the following:

  • reanimated-bottom-sheet
    • Seamless gesture interaction between the sheet and the content.
  • react-native-scroll-bottom-sheet
    • Extracting scrollable content to allow developers customize the sheet content, like integrate React Navigation as the sheet content.

Both libraries are great! and I have used both of them at my work ❤️

How can I integrate React Navigation?

here you go React Navigation Integration :)

Will this library support Reanimated v2?

Yes 🎉

Built With ❤️


Download Details:

Author: gorhom

Source Code: https://github.com/gorhom/react-native-bottom-sheet

#react #react-native #mobile-apps

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A React Native Bottom Sheet with Fully Configurable Options
Autumn  Blick

Autumn Blick


How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

  • Performance: It delivers optimal performance.
  • Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
  • UI design: React Native enables you to design simple and responsive UI for your mobile app.
  • 3rd party plugins: This framework supports 3rd party plugins.
  • Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

  • Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
  • Near-native user experience: React Native provides several native components, and these are platform agnostic.
  • The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

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How to Create the Custom Radio Buttons using only HTML & CSS

In this guide you’ll learn how to create the Custom Radio Buttons using only HTML & CSS.

To create the custom radio buttons using only HTML & CSS. First, you need to create two Files one HTML File and another one is CSS File.

1: First, create an HTML file with the name of index.html

<!DOCTYPE html>
<html lang="en" dir="ltr">
    <meta charset="utf-8">
    <title>Custom Radio Buttons | Codequs</title>
    <link rel="stylesheet" href="style.css">
    <div class="wrapper">
      <input type="radio" name="select" id="option-1" checked>
      <input type="radio" name="select" id="option-2">
      <label for="option-1" class="option option-1">
        <div class="dot"></div>
      <label for="option-2" class="option option-2">
        <div class="dot"></div>


2: Second, create a CSS file with the name of style.css


@import url('https://fonts.googleapis.com/css?family=Poppins:400,500,600,700&display=swap');
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
  display: grid;
  height: 100%;
  place-items: center;
  background: #0069d9;
  display: inline-flex;
  background: #fff;
  height: 100px;
  width: 400px;
  align-items: center;
  justify-content: space-evenly;
  border-radius: 5px;
  padding: 20px 15px;
  box-shadow: 5px 5px 30px rgba(0,0,0,0.2);
.wrapper .option{
  background: #fff;
  height: 100%;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-evenly;
  margin: 0 10px;
  border-radius: 5px;
  cursor: pointer;
  padding: 0 10px;
  border: 2px solid lightgrey;
  transition: all 0.3s ease;
.wrapper .option .dot{
  height: 20px;
  width: 20px;
  background: #d9d9d9;
  border-radius: 50%;
  position: relative;
.wrapper .option .dot::before{
  position: absolute;
  content: "";
  top: 4px;
  left: 4px;
  width: 12px;
  height: 12px;
  background: #0069d9;
  border-radius: 50%;
  opacity: 0;
  transform: scale(1.5);
  transition: all 0.3s ease;
  display: none;
#option-1:checked:checked ~ .option-1,
#option-2:checked:checked ~ .option-2{
  border-color: #0069d9;
  background: #0069d9;
#option-1:checked:checked ~ .option-1 .dot,
#option-2:checked:checked ~ .option-2 .dot{
  background: #fff;
#option-1:checked:checked ~ .option-1 .dot::before,
#option-2:checked:checked ~ .option-2 .dot::before{
  opacity: 1;
  transform: scale(1);
.wrapper .option span{
  font-size: 20px;
  color: #808080;
#option-1:checked:checked ~ .option-1 span,
#option-2:checked:checked ~ .option-2 span{
  color: #fff;

Now you’ve successfully created Custom Radio Buttons using only HTML & CSS.

Rate Limit Auto-configure for Spring Cloud Netflix Zuul


Module to enable rate limit per service in Netflix Zuul.

There are five built-in rate limit approaches:

  • Authenticated User
    • Uses the authenticated username or 'anonymous'
  • Request Origin
    • Uses the user origin request
  • URL
    • Uses the request path of the downstream service
  • URL Pattern
    • Uses the request Ant path pattern to the downstream service
  • ROLE
    • Uses the authenticated user roles
  • Request method
    • Uses the HTTP request method
  • Request header
    • Uses the HTTP request header
  • Global configuration per service:
    • This one does not validate the request Origin, Authenticated User or URI
    • To use this approach just don’t set param 'type'
NoteIt is possible to combine Authenticated User, Request Origin, URL, ROLE and Request Method just adding multiple values to the list


NoteLatest version: Maven Central
NoteIf you are using Spring Boot version 1.5.x you MUST use Spring Cloud Zuul RateLimit version 1.7.x. Please take a look at the Maven Central and pick the latest artifact in this version line.

Add the dependency on pom.xml


Add the following dependency accordingly to the chosen data storage:





Spring Data JPA


This implementation also requires a database table, bellow here you can find a sample script:

  rate_key VARCHAR(255) NOT NULL,
  remaining BIGINT,
  remaining_quota BIGINT,
  reset BIGINT,
  expiration TIMESTAMP,
  PRIMARY KEY(rate_key)

Bucket4j JCache


Bucket4j Hazelcast (depends on Bucket4j JCache)


Bucket4j Infinispan (depends on Bucket4j JCache)


Bucket4j Ignite (depends on Bucket4j JCache)


Sample YAML configuration

    key-prefix: your-prefix
    enabled: true
    repository: REDIS
    behind-proxy: true
    add-response-headers: true
      response-status-code: 404 #default value is 403 (FORBIDDEN)
        - somedomain.com
    default-policy-list: #optional - will apply unless specific policy exists
      - limit: 10 #optional - request number limit per refresh interval window
        quota: 1000 #optional - request time limit per refresh interval window (in seconds)
        refresh-interval: 60 #default value (in seconds)
        type: #optional
          - user
          - origin
          - url
          - http_method
        - limit: 10 #optional - request number limit per refresh interval window
          quota: 1000 #optional - request time limit per refresh interval window (in seconds)
          refresh-interval: 60 #default value (in seconds)
          type: #optional
            - user
            - origin
            - url
        - type: #optional value for each type
            - user=anonymous
            - origin=somemachine.com
            - url=/api #url prefix
            - role=user
            - http_method=get #case insensitive
            - http_header=customHeader
        - type:
            - url_pattern=/api/*/payment

Sample Properties configuration




# Adding multiple rate limit type

# Adding the first rate limit policy to "myServiceId"

# Adding the second rate limit policy to "myServiceId"

Both 'quota' and 'refresh-interval', can be expressed with Spring Boot’s duration formats:

A regular long representation (using seconds as the default unit)

The standard ISO-8601 format used by java.time.Duration (e.g. PT30M means 30 minutes)

A more readable format where the value and the unit are coupled (e.g. 10s means 10 seconds)

Available implementations

There are eight implementations provided:

ImplementationData Storage
SpringDataRateLimiterSpring Data

Bucket4j implementations require the relevant bean with @Qualifier("RateLimit"):

JCache - javax.cache.Cache

Hazelcast - com.hazelcast.map.IMap

Ignite - org.apache.ignite.IgniteCache

Infinispan - org.infinispan.functional.ReadWriteMap

Common application properties

Property namespace: zuul.ratelimit

Property nameValuesDefault Value
default-policy-listList of Policy-
policy-listMap of Lists of Policy-
postFilterOrderintFilterConstants.SEND_RESPONSE_FILTER_ORDER - 10

Deny Request properties

Property nameValuesDefault Value
originslist of origins to have the access denied-
response-status-codethe http status code to be returned on a denied request403 (FORBIDDEN)

Policy properties:

Property nameValuesDefault Value
limitnumber of requests-
quotatime of requests-

Further Customization

This section details how to add custom implementations

Key Generator

If the application needs to control the key strategy beyond the options offered by the type property then it can be done just by creating a custom RateLimitKeyGenerator bean[1] implementation adding further qualifiers or something entirely different:

  public RateLimitKeyGenerator ratelimitKeyGenerator(RateLimitProperties properties, RateLimitUtils rateLimitUtils) {
      return new DefaultRateLimitKeyGenerator(properties, rateLimitUtils) {
          public String key(HttpServletRequest request, Route route, RateLimitProperties.Policy policy) {
              return super.key(request, route, policy) + ":" + request.getMethod();

Error Handling

This framework uses 3rd party applications to control the rate limit access and these libraries are out of control of this framework. If one of the 3rd party applications fails, the framework will handle this failure in the DefaultRateLimiterErrorHandler class which will log the error upon failure.

If there is a need to handle the errors differently, it can be achieved by defining a custom RateLimiterErrorHandler bean[2], e.g:

  public RateLimiterErrorHandler rateLimitErrorHandler() {
    return new DefaultRateLimiterErrorHandler() {
        public void handleSaveError(String key, Exception e) {
            // custom code

        public void handleFetchError(String key, Exception e) {
            // custom code

        public void handleError(String msg, Exception e) {
            // custom code

Event Handling

If the application needs to be notified when a rate limit access was exceeded then it can be done by listening to RateLimitExceededEvent event:

    public void observe(RateLimitExceededEvent event) {
        // custom code


Spring Cloud Zuul Rate Limit is released under the non-restrictive Apache 2.0 license, and follows a very standard Github development process, using Github tracker for issues and merging pull requests into master. If you want to contribute even something trivial please do not hesitate, but follow the guidelines below.

Download Details:
Author: marcosbarbero
Source Code: https://github.com/marcosbarbero/spring-cloud-zuul-ratelimit
License: Apache-2.0 License

#spring  #spring-boot  #java 

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