📅  最后修改于: 2023-12-03 14:44:47.064000             🧑  作者: Mango
NPM 反应动画是一个基于 React 和 React Native 的动画库,可以用来创建各种类型的动画效果。该库具有良好的可定制性和易用性,因此在Web、移动端等项目中广受欢迎。
安装
npm install react-native-reanimated react-native-gesture-handler react-native-redash
构建一个简单的反应动画
import Animated from "react-native-reanimated";
// 创建一个动画
const { Value, multiply } = Animated;
//创建动画值
const translationX = new Value(0);
//转换动画值
const interpolatedValue = multiply(translationX, 2);
//将动画值用于组件
return <Animated.View style={{ transform: [{ translateX: interpolatedValue }] }} />;
NPM 反应动画库包括多种动画效果。以下是其中一些常用功能的简要介绍。
import { Value } from "react-native-reanimated";
const value = new Value(0);
import { block, set } from "react-native-reanimated";
const sampleBlock = block([set(value, 1), set(value, 2)]);
import { cond, eq, set } from "react-native-reanimated";
const sampleCond = cond(eq(value, 1), set(value, 2), set(value, 3));
import { call } from "react-native-reanimated";
const sampleCall = call([], () => console.log("Hello World!"));
import { debug } from "react-native-reanimated";
const sampleDebug = debug("name", value);
import { PI } from "react-native-redash";
const myPi = PI;
import { cos } from "react-native-redash";
const myCos = cos(PI);
import { vec2 } from "react-native-redash";
const myVector2 = vec2.create(1, 2);
import { PanGestureHandler } from "react-native-gesture-handler";
const handleGestureEvent = Animated.event([
{
nativeEvent: {
translationX: translationX,
},
},
]);
return (
<PanGestureHandler onGestureEvent={handleGestureEvent}>
<Animated.View style={{ transform: [{ translateX: translationX }] }} />
</PanGestureHandler>
);
import { TapGestureHandler } from "react-native-gesture-handler";
const handleGestureEvent = () => {
console.log("Hello World!");
};
return (
<TapGestureHandler onHandlerStateChange={handleGestureEvent}>
<View>Click me</View>
</TapGestureHandler>
);
总的来说,NPM 反应动画是一个非常有用的库,可以帮助您在项目中实现各种动画效果。该库可定制性强,容易使用,非常适合需要快速制作动画的程序员。