react native仿微信PopupWindow效果的实例代码

import {Dimensions} from 'react-native'

const deviceH = Dimensions.get('window').height
const deviceW = Dimensions.get('window').width

const basePx = 375

export default function px2dp(px) { 
  return px * deviceW / basePx
}

import React from 'react'
import {
  StyleSheet,
  Platform,
  View,
  Text,
  Image,
  TouchableOpacity,
  Alert,
  Modal,
  Dimensions,
} from 'react-native'
import SpacingView from "./SpacingView";
import QRScanPage from "../home/QRScanPage";

const { width, height } = Dimensions.get('window');
import px2dp from '../util/Utils'

const mTop = px2dp(Platform.OS == "ios" "htmlcode">

/**
 * https://github.com/facebook/react-native
 * @flow 首页的标题栏
 */

import React, {Component} from 'react';
import {Platform, View, Dimensions, Text, StyleSheet, TouchableOpacity, Image} from 'react-native';
import SelectCityPage from '../home/SelectCityPage'
import MorePopWidows from '../component/MorePopWidows'
import px2dp from '../util/Utils'

const isIOS = Platform.OS == "ios"
const {width, height} = Dimensions.get('window')
const headH = px2dp(isIOS "#666", marginLeft: 5}}>输入商家、商品名称</Text>
        </TouchableOpacity>
        <TouchableOpacity style={styles.action} onPress={() => { this.setState({ showPop: !this.state.showPop }) }}>
          <Image style={styles.scanIcon}
              source={require('../images/ic_scan_code_white.png')}/>
          <Text style={styles.scanText}>扫码</Text>
        </TouchableOpacity>
      </View>
        <View style={{ position: 'absolute', top: headH, left: 0, width: width, height: height }}>
          <MorePopWidows width={90} height={100} show={this.state.showPop} closeModal={(show) => {
            this.setState({showPop: show})
          }} {...this.props}/>
        </View>

      </View>
    )
  }

  render() {
    return (
      <View>
        {this.renderHeader()}
      </View>
    );
  }
}

const styles = StyleSheet.create({
  headerStyle: {
    backgroundColor: "#06C1AE",
    height: headH,
    paddingTop: px2dp(isIOS ? 20 : 0),
    paddingHorizontal: 16,
    flexDirection: 'row',
    alignItems: 'center',
  },
  searchBar: {
    width: width * 0.65,
    height: 30,
    borderRadius: 19,
    marginLeft: 10,
    flexDirection: 'row',
    justifyContent: 'flex-start',
    alignItems: 'center',
    backgroundColor: 'white',
    alignSelf: 'center',
    paddingLeft: 10,
  },
  text: {
    fontSize: 16,
    color: '#ffffff',
    justifyContent: 'center',
  },
  iconStyle: {
    width: 22,
    height: 22,
  },
  action: {
    flexDirection: 'row',
    justifyContent: 'center',
    alignItems: 'center',
  },
  scanIcon: {
    width: 28,
    height: 28,
    alignItems: 'center',
    marginLeft: 10,
  },
  scanText: {
    fontSize: 14,
    color: '#ffffff',
    justifyContent: 'center',
    alignItems: 'center',
  },
});



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