We need to set the animated values to perform the dragging correctly. In step three, the handler will trigger when the element is moving.We are setting the handlers when the user moves and releases the element. In step two, create the PanResponder, which is responsible for doing the dragging. We will run the animations by setting these values to the style of the element to animate. This component will take care of interpolating X and Y values. In step one, create an instance of Animated.ValueXY.Add the following code inside the Viewport.js. For now, we are just going to create the elements and the required styles. Let’s start coding the Viewport component. If the user drags the circle somewhere else, then we will animate the circle back to the middle of the screen. We will allow the user to drag the circle and drop it on the top area. We are going to create a simple container at the top of the screen and a circle at the middle. Now we can create the UI for this example. If we want to create an Android app, we can do exactly the same for the file. This will import React Native and our Viewport, and then register the app. Open the file in your favorite editor, remove the original code, and add the following. This way, we can share this component for both iOS and Android apps. This is where we will write all our code. Inside this app folder create a new file called Viewport.js. Creating the viewsīefore we start coding, let’s create a folder called app, where we will create all our components and classes for this example. Once we have our new project created, let’s open the ios/DragAndDrop.xcode file in xCode to build and run the project in the iOS simulator. Type the following command: $ react-native init DragAndDrop Let’s start by creating a new project in your terminal. The idea here is to understand how animations in React Native works. In this tutorial, we will learn how to animate an element, drag it around, and drop it. Once we have the perfect layout, it is time to add some interaction. Recently, we explored the React Native layout system using flex and we’ve discussed the different options and properties to create all kinds of layouts. With the ability to start work and build apps quickly, it’s easy to see why React Native is so awesome! However, when you want to add nice animations and effects it can be tricky, especially because the documentation for animations is limited, and it might be difficult to grasp the concepts.
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