react-native彈窗封裝的方法

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本文實例為大傢分享瞭react-native彈窗封裝的具體代碼，供大傢參考，具體內容如下

上圖

仿蘋果彈窗組件（android+ios均可用）

以上效果均基於本文的彈窗組件，後續將會介紹上面的組件，也可基於改組件定制更多組件

安裝依賴 yarn add react-native-root-siblings 或者 npm install react-native-root-siblings –save

主要代碼

顯示彈窗

export const showModal = (component) => {
    sibling = new RootSiblings(component);
};

銷毀彈窗

export const destroySibling = (component) =>  sibling && sibling.destroy()

更新彈窗

export const update = (index, component) => sibling && sibling.update(<View>{component}</View>)

完整代碼

多彈窗管理不涉及，暫時介紹單個彈窗，感興趣的可以自己試試，將sibling改為數組；

//ShowModal.js
import React from 'react';
import {View} from 'react-native';
import RootSiblings from 'react-native-root-siblings';  //全局彈框組件
let sibling = null;
export const showModal = (component) => {
    sibling = new RootSiblings(component);
};
export const destroySibling = (component) =>  sibling && sibling.destroy()
export const update = (index, component) => sibling && sibling.update(<View>{component}</View>)

使用示例—>淡入背景

組件 ModalBg.js

import React from 'react';
import {Animated, InteractionManager, Easing, TouchableOpacity} from 'react-native';
import {getScreenHeight, getScreenWidth} from '../../utils/util';
import {destroyLastSibling} from '../showModal/ShowModal';
export default class ModalBg extends React.Component {
  animated = new Animated.Value(0);

  isShow = false;

  componentDidMount(): void {
    InteractionManager.runAfterInteractions(() => {
      this.handleAni();
    });
  }

  componentWillUnmount(): void {
    InteractionManager.runAfterInteractions(() => {
      this.handleAni();
    });
  }

  handleAni = () => {
    Animated.timing(this.animated, {
      toValue: this.isShow ? 0 : 1,
      duration: 250,
      easing: Easing.ease
    }).start(() => this.isShow = !this.isShow);
  };

  render() {
    const opct = this.animated.interpolate({
      inputRange: [0, 1],
      outputRange: [0, 0.4]
    });
    return <Animated.View style={{
      position: 'absolute',
      width: getScreenWidth(),
      height: getScreenHeight(),
      backgroundColor: '#000',
      opacity: opct,
      zIndex: 10
    }}><TouchableOpacity onPress={() => {
      destroyLastSibling();
    }} style={{flex: 1}} /></Animated.View>;
  }
}

調用

showModal(<ModalBg />);

以上就是本文的全部內容，希望對大傢的學習有所幫助，也希望大傢多多支持WalkonNet。

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