var Component=(()=>{var h=Object.create;var t=Object.defineProperty;var m=Object.getOwnPropertyDescriptor;var u=Object.getOwnPropertyNames;var N=Object.getPrototypeOf,k=Object.prototype.hasOwnProperty;var o=e=>t(e,"__esModule",{value:!0});var g=(e,s)=>()=>(s||e((s={exports:{}}).exports,s),s.exports),y=(e,s)=>{o(e);for(var c in s)t(e,c,{get:s[c],enumerable:!0})},v=(e,s,c)=>{if(s&&typeof s=="object"||typeof s=="function")for(let a of u(s))!k.call(e,a)&&a!=="default"&&t(e,a,{get:()=>s[a],enumerable:!(c=m(s,a))||c.enumerable});return e},b=e=>v(o(t(e!=null?h(N(e)):{},"default",e&&e.__esModule&&"default"in e?{get:()=>e.default,enumerable:!0}:{value:e,enumerable:!0})),e);var p=g((E,r)=>{r.exports=_jsx_runtime});var j={};y(j,{default:()=>x,frontmatter:()=>f});var n=b(p()),f={title:"Animated Grid List Layout",date:"2023-01-11",lastmod:"2023-01-11",tags:["react-native","react","react-native-reanimated"],draft:!1,layout:"PostLayout",accessCode:"44427b82e459280472ac8188cbec708e58ca5590e15b90cf5bd9b26384791e86",vimeoId:"787369926"};function w(e={}){let{wrapper:s}=e.components||{};return s?(0,n.jsx)(s,Object.assign({},e,{children:(0,n.jsx)(c,{})})):c();function c(){let a=Object.assign({h2:"h2",a:"a",span:"span",p:"p",h3:"h3",strong:"strong",pre:"pre",code:"code",ol:"ol",li:"li"},e.components),{VideoPlayer:l,YouTubeEmbed:i}=a;return l||d("VideoPlayer",!0),i||d("YouTubeEmbed",!0),(0,n.jsxs)(n.Fragment,{children:[(0,n.jsxs)(a.h2,{id:"introduction",children:[(0,n.jsx)(a.a,{"aria-hidden":"true",tabIndex:"-1",href:"#introduction",children:(0,n.jsx)(a.span,{className:"icon icon-link"})}),"Introduction"]}),` `,(0,n.jsx)(a.p,{children:"What's going on mobile devs?"}),` `,(0,n.jsx)(a.p,{children:`First of all I want to thank you for supporting me on Patreon. You are really motivating me a lot. I hope I can bring as much content as I can. During this holiday season it's been really hard trying to be active here, but I've been doing my best to create high-level animations. In the coming weeks I will try to produce even better content (including on YouTube).`}),` `,(0,n.jsx)(l,{video:e.vimeoId}),` `,(0,n.jsx)(a.p,{children:"Before moving on, keep in mind that this article is definitely easier to understand if you have the code opened in your editor."}),` `,(0,n.jsxs)(a.h3,{id:"the-end-result",children:[(0,n.jsx)(a.a,{"aria-hidden":"true",tabIndex:"-1",href:"#the-end-result",children:(0,n.jsx)(a.span,{className:"icon icon-link"})}),"The end result"]}),` `,(0,n.jsxs)(a.p,{children:["As always, I've tried to create a reusable component, so you can use it in your projects. The component is called ",(0,n.jsx)(a.strong,{children:"AnimatedLayoutList"}),":"]}),` `,(0,n.jsx)(a.p,{children:"Here's the component's interface:"}),` `,(0,n.jsx)(a.pre,{className:"language-tsx",children:(0,n.jsxs)(a.code,{className:"language-tsx code-highlight",children:[(0,n.jsxs)(a.span,{className:"code-line",children:[(0,n.jsx)(a.span,{className:"token keyword",children:"type"})," ",(0,n.jsxs)(a.span,{className:"token class-name",children:["AnimatedLayoutListProps",(0,n.jsx)(a.span,{className:"token operator",children:"<"}),(0,n.jsx)(a.span,{className:"token constant",children:"T"}),(0,n.jsx)(a.span,{className:"token operator",children:">"})]})," ",(0,n.jsx)(a.span,{className:"token operator",children:"="})," ",(0,n.jsx)(a.span,{className:"token punctuation",children:"{"}),` `]}),(0,n.jsxs)(a.span,{className:"code-line",children:[" data",(0,n.jsx)(a.span,{className:"token operator",children:":"})," ",(0,n.jsx)(a.span,{className:"token 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`,(0,n.jsxs)(a.h2,{id:"the-approach",children:[(0,n.jsx)(a.a,{"aria-hidden":"true",tabIndex:"-1",href:"#the-approach",children:(0,n.jsx)(a.span,{className:"icon icon-link"})}),"The Approach"]}),` `,(0,n.jsx)(a.p,{children:"Let's be honest, this animation feels really hard, but under the hood it's simply using the Layout Animation concept from the Reanimated package."}),` `,(0,n.jsxs)(a.p,{children:["So if you want to reuse the component built in this article, keep in mind that you need to install just the ",(0,n.jsx)(a.strong,{children:"react-native-reanimated"})," package."]}),` `,(0,n.jsx)(a.pre,{className:"language-bash",children:(0,n.jsx)(a.code,{className:"language-bash code-highlight",children:(0,n.jsxs)(a.span,{className:"code-line",children:[(0,n.jsx)(a.span,{className:"token function",children:"yarn"})," ",(0,n.jsx)(a.span,{className:"token function",children:"add"}),` react-native-reanimated `]})})}),` `,(0,n.jsx)(a.p,{children:"By checking closely the animation, we can see that the animation is composed of two main animations:"}),` `,(0,n.jsxs)(a.ol,{children:[` `,(0,n.jsx)(a.li,{children:"The perspective animation"}),` `,(0,n.jsx)(a.li,{children:"The Grid/List animation"}),` `]}),` `,(0,n.jsxs)(a.h2,{id:"perspective-animation",children:[(0,n.jsx)(a.a,{"aria-hidden":"true",tabIndex:"-1",href:"#perspective-animation",children:(0,n.jsx)(a.span,{className:"icon icon-link"})}),"Perspective Animation"]}),` `,(0,n.jsx)(a.p,{children:"The perspective animation is the one that is responsible for the rotation of the items. 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We are also using the ",(0,n.jsx)(a.strong,{children:"onEndDrag"})," and ",(0,n.jsx)(a.strong,{children:"onMomentumEnd"})," events to trigger the ",(0,n.jsx)(a.strong,{children:"onScrollEnd"})," function."]}),` `,(0,n.jsxs)(a.p,{children:["The ",(0,n.jsx)(a.strong,{children:"onScrollEnd"})," function is responsible for setting the ",(0,n.jsx)(a.strong,{children:"isScrolling"})," variable to false and the ",(0,n.jsx)(a.strong,{children:"direction"})," variable to ",(0,n.jsx)(a.strong,{children:"Direction.None"}),"."]}),` `,(0,n.jsxs)(a.p,{children:["The ",(0,n.jsx)(a.strong,{children:"direction"})," variable is responsible for telling us if the user is scrolling up or down. The ",(0,n.jsx)(a.strong,{children:"isScrolling"})," variable is responsible for telling us if the user is scrolling or not."]}),` `,(0,n.jsxs)(a.p,{children:["Why do we need to use the ",(0,n.jsx)(a.strong,{children:"onEndDrag"})," and ",(0,n.jsx)(a.strong,{children:"onMomentumEnd"})," events? 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If you have any questions, feel free to write me on Twitter or with a private message me on Patreon, I'll be happy to answer them."})]})}}var x=w;function d(e,s){throw new Error("Expected "+(s?"component":"object")+" `"+e+"` to be defined: you likely forgot to import, pass, or provide it.")}return j;})(); ;return Component;