react-native 生成二維碼

react-native 生成二維碼

先上效果

使用的開源庫

react-native-qrcode

配置方式

Installation

npm install react-native-qrcode --save
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Usage

import React, { Component } from 'react'
import QRCode from 'react-native-qrcode';

import {
    AppRegistry,
    StyleSheet,
    View,
    TextInput
} from 'react-native';

class HelloWorld extends Component {
  state = {
    text: 'http://facebook.github.io/react-native/',
  };

  render() {
    return (
      <View style={styles.container}>
        <TextInput
          style={styles.input}
          onChangeText={(text) => this.setState({text: text})}
          value={this.state.text}
        />
        <QRCode
          value={this.state.text}
          size={200}
          bgColor='purple'
          fgColor='white'/>
      </View>
    );
  };
}

const styles = StyleSheet.create({
    container: {
        flex: 1,
        backgroundColor: 'white',
        alignItems: 'center',
        justifyContent: 'center'
    },

    input: {
        height: 40,
        borderColor: 'gray',
        borderWidth: 1,
        margin: 10,
        borderRadius: 5,
        padding: 5,
    }
});

AppRegistry.registerComponent('HelloWorld', () => HelloWorld);

module.exports = HelloWorld;
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