![]() Next, we'll implement sharing, Let's create a function shareImage and bind it to the share button. It is a React Native module that allows you to select a photo/video. Try it out and you'll see that the image will be saved as is demonstrated in the video at the end of this article. For picking the image we will use a very good library called react-native-image-picker. It is going to be wrapped by a TouchableOpacity component because its onPress prop is going to fire a handler method we have yet to create, to allow a user to change the selected image by a tap.// App.js import React from ' react ' import return (. His happiest moment was when Jody Dillon scored THAT goal in the Laois senior football final in 2016. Alan has a BA in Economics, Politics and Law and an MA in Journalism from DCU. To show the selected thumbnail or the current thumbnail, using a ternary operator, let's manipulate the style properties borderWidth and borderColor on this Image component. Stradbally native Alan Hartnett is a graduate of Knockbeg College who has worked in the local and national media since 2008. It has the width and the height of the THUMB_SIZE variable we declared earlier. To achieve that, let's set use position: absolute style property with a bottom of value 80.Įach thumbnail is composed of an Image component. This list is going to be displayed at the bottom of the device's screen and is a horizontal list. Let's display a list of thumbnails using FlatList from React Native using the same array of images from the state variable. Create a list of thumbnails using FlatList □ Let's see how to sync it with a custom FlatList component in the next section. ![]() When defining a state, they must be the first thing in the function, especially before returning a JSX.Īwesome! The configuration for the Carousel component is now complete. There are 8 other projects in the npm registry using react-native-image-viewing. Start using react-native-image-viewing in your project by running npm i react-native-image-viewing. Latest version: 0.2.2, last published: a year ago. Hooks are always called at the top level of a functional component in React. React Native modal component for viewing images as a sliding gallery. To set up the carousel view of an image for different screen sizes, let's use the Dimensions API from React Native.Īdd the following code snippet to App.js and make sure to define state variables at the top of the App function. You can technically name it anything, but following conventions that are commonly used in the React world is a good practice to follow.Īlso, define some constants that will be used throughout the example such as the overall spacing between each thumbnail and the width and height of each thumbnail to represent in the FlatList. This why the second value starts with a conventional prefix of a set. The first value is the current value of the state object, and the second value in the array is the function to update the state value of the first. The useState hook returns two values in an array. ![]() Open up a terminal window and run each command as mentioned in the order:ġ const = useState ( ) To follow along with this tutorial, set up a new React Native project and install all the dependencies that are required to implement the example. react-native-cli installed, or use npx.Have access to one package manager such as npm or yarn or npx.To follow this tutorial, please make sure you are familiarized with JavaScript/ES6 and meet the following requirements in your local dev environment: Of course, to achieve this synchronization between the two, we are going to use React Hooks such that you will be able to implement such a pattern in your own React Native apps. View maps directly to the native view equivalent on whatever platform React Native is running on, whether that is a UIView,
, android.view, etc.
The construction of the syncing part between the two is to add a functionality such that when an image in the carousel is scrolled either left or right, the thumb in the FlatList is also going to be scrolled along with it. The most fundamental component for building a UI, View is a container that supports layout with flexbox, style, some touch handling, and accessibility controls. The FlatList is what we will use to display the thumbnail view for each image below the carousel. The open-source library is going to display each image in a carousel view. In this tutorial, let's create a custom gallery of images using react-native-snap-carousel and FlatList from React Native. But what if we want to create a custom gallery view with additional functionality? Using an open-source library such as react-native-swiper or more advance react-native-snap-carousel serves the purpose. In React Native, there are many ways to display a collection of images in a gallery view.
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