react-native底部导航栏实现

1. react-native-tab-navigator实现：

　　　　bottom.js代码如下：

　　　　

import React, {Component} from 'react';
import {StyleSheet, View,Text,Image} from 'react-native';
import TabNavigator from 'react-native-tab-navigator'
 
export default class Bottom extends Component {
  /*初始化state*/
  constructor(props){
      super();
      this.state={ selectedTab:'tb_msg', } } /** * 公共组件方法 * @param selectedTab 选中的tab * @param title * @param icon * @param selectedIcon * @param imageStyle 选中时渲染图标的颜色 * @param mark 角标 * @param viewContent 页面内容 * @returns {*} */ tabNavigatorItems(selectedTab,title,icon,selectedIcon,imageStyle,mark,viewContent){ return ( <TabNavigator.Item selected={this.state.selectedTab === selectedTab } title={title} renderIcon={()=> <Image style={styles.myImage} source={icon}/> } renderSelectedIcon={()=> <Image style={[styles.myImage,{tintColor:imageStyle}]} source={selectedIcon}/> } badgeText={mark} onPress={()=> this.setState({selectedTab:selectedTab}) }> <View style={{flex:1}}><Text>{viewContent}</Text></View> </TabNavigator.Item>  ) } render() { return ( <View style={styles.container}> <TabNavigator> {this.tabNavigatorItems('tb_msg',"消息",require('../../assets/img/zhuye.png'),require("../../assets/img/zhuyesl.png"),'#622193',"","消息页面内容")} {this.tabNavigatorItems('tb_contacts',"联系人",require('../../assets/img/zhuye.png'),require("../../assets/img/zhuye.png"),'#65bb74',"","联系人页面内容")} {this.tabNavigatorItems('tb_watch',"看点",require('../../assets/img/zhuye.png'),require("../../assets/img/zhuye.png"),'#6ebef3',"","看点页面内容")} {this.tabNavigatorItems('tb_dynamic',"动态",require('../../assets/img/zhuye.png'),require("../../assets/img/zhuye.png"),'#622193',"","动态页面内容")} </TabNavigator> </View>  ); } } const styles = StyleSheet.create({ container: { flex: 1, backgroundColor: '#F5FCFF', }, myImage:{ width:22, height:22, } });

        运行：react-native run-android

     

 　运行结果：