目录

一、步骤

1、main.js 引入并初始化 VueI18n 

2、创建文件夹locale

二、应用

1、页面（固定数据）

2、动态数据

3、系统

---

官网详解：https://uniapp.dcloud.net.cn/tutorial/i18n.html

我创建项目的时候选择的模板是uni-ui项目，所以不需要npm  vue-i18n

一、步骤

1、main.js 引入并初始化 VueI18n 

import messages from './locale/index'//(1)

let i18nConfig = { //(2)
	locale: uni.getLocale(),//获取系统语言
	messages
}



// #ifndef VUE3
import Vue from 'vue'
import App from './App'
import store from './store'
import api from '@/http/vmeitime-http/index.js'
import share from '@/utils/share.js'
Vue.mixin(share)

import VueI18n from 'vue-i18n'//(3)
Vue.use(VueI18n)//(4)
const i18n = new VueI18n(i18nConfig)//(5)

Vue.config.productionTip = false
Vue.prototype.$store = store
Vue.prototype.api = api

App.mpType = 'app'


const app = new Vue({
	...App,
	store,
	share,
	i18n,//(6)
})
app.$mount()
// #endif

// #ifdef VUE3
import {
	createSSRApp
} from 'vue'
import App from './App.vue'
//(7)
import {
	createI18n
} from 'vue-i18n'
const i18n = createI18n(i18nConfig)//(8)
export function createApp() {
	const app = createSSRApp(App)
	app.use(i18n)//(9)
	return {
		app
	}
}
// #endif

2、创建文件夹locale

locale文件夹是与pages同级

locale/en.json（英文模板）

{
	"locale.auto": "System",
	"locale.en": "English",
	"locale.zh-hans": "简体中文",
	"index.scene": "Scene",
	"index.company": "Company Profile",
	"index.package": "Package",
	"index.details": "Details",
	"word.whole": "whole",
	"word.download": "Download Records",
	"word.preservation": "Transfer to my mobile phone",
	"word.forward": "Forward to friends",
	"me.WeChat": "WeChat name",
	"me.message": "Message feedback",
	"me.myDownloads": "My Downloads",
	"me.contact": "contact us",
	"me.logout": "Log out"
}

locale/ zh-Hans（简体中文）

{
	"locale.auto": "系统",
	"locale.en": "English",
	"locale.zh-hans": "简体中文",
	"index.scene": "场景",
	"index.company": "公司介绍",
	"index.package": "产品包",
	"index.details": "详情",
	"word.whole": "全部",
	"word.download": "下载记录",
	"word.preservation": "转存到我的手机",
	"word.forward": "转发给朋友",
	"me.WeChat": "微信名",
	"me.message": "留言反馈",
	"me.myDownloads": "我的下载",
	"me.contact": "联系我们",
	"me.logout": "退出登录"
}

locale/index.js

import en from './en.json'
import zhHans from './zh-Hans.json'

export default {
	en,
	'zh-Hans': zhHans,
}

二、应用

1、页面（固定数据）

在首页pages/index/index.vue

在首页必须这样写，其他页面就只要写（5）即可

<template>
	<view class="container">
      //(5)
      <view>{{$t('index.scene')}}</view> 
    </view>
</template>

<script>
	export default {
		computed: { //(1)
			locales() {
				return [{
						text: this.$t('locale.auto'),
						code: 'auto'
					},{
						text: this.$t('locale.en'),
						code: 'en'
					}, {
						text: this.$t('locale.zh-hans'),
						code: 'zh-Hans'
					}
				]
			}
		},
		data() {
			return {
				applicationLocale: '', //语言//(2)
                systemLocale:''
			};
		},
		onLoad() {
            //(3)
			let systemInfo = uni.getSystemInfoSync();
			this.systemLocale = systemInfo.language;
			this.applicationLocale = uni.getLocale();
			this.isAndroid = systemInfo.platform.toLowerCase() === 'android';
			uni.onLocaleChange((e) => {
				this.applicationLocale = e.locale;
			})
            //h5页面设置成英文
            /*#ifdef H5*/
			this.applicationLocale = 'en';
			this.$i18n.locale = 'en'
			/*#endif*/
		},
		methods: {
            //(4)
			onLocaleChange(e) {
				if (this.isAndroid) {
					uni.showModal({
						content: this.$t('index.language-change-confirm'),
						success: (res) => {
							if (res.confirm) {
								uni.setLocale(e.code);
							}
						}
					})
				} else {
					uni.setLocale(e.code);
					this.$i18n.locale = e.code;
				}
			},
		}
	}
</script>

注意：

（1）、在template中使用的格式：{{$t('index.scene')}}

（2）、在data里数值的替换方法：this.$t('index.scene')

<template>
	<view class="me-container">
			<uni-list v-for="(item,index) in list" :key='index'>
				<uni-list-item :title="item.title" clickable="true" thumb-size="medium" showArrow
					:rightText="item.rightText?item.rightText:''" @click="pages(item,index)">
					<template v-slot:header>
						<view class="slot-box">
							<image class="slot-image" :src="item.thumb" mode="widthFix"></image>
						</view>
					</template>
				</uni-list-item>
			</uni-list>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				list: [],
			};
		},
		onLoad() {
            //template正常写，不变，数组使用push的方法，对象同理
            //必须使用push的方式，若使用list:[me.message,me.myDownloads]无效
			this.list.push( {
				 	title: this.$t('me.message'),
				 	thumb: '../../static/lyfkicon.png'
				 },{
					title: this.$t('me.myDownloads'),
					thumb: '../../static/wdxzicon.png'
				}, {
					title: this.$t('me.contact'),
					rightText: '400-123-1234',
					thumb: '../../static/lxwmicon.png'
				}, {
					title: this.$t('me.logout'),
					thumb: '../../static/tcdlicon.png'
				})
		},
	}
</script>

2、动态数据

 先获取系统语言，然后把获取的语言存储起来，方便之后判断。

后端传给我的是以下格式：

{
    Name:'名字'//中文
    Name_EN:'name'//英文
}

app.vue

onLaunch: function() {
		this.$store.commit('SET_LOCALE', uni.getLocale())
},

store/index.js

import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex)
const store = new Vuex.Store({
	state: {
		getLocale: 'zh-Hans'
	},
	getters: {
		getLocale: state => state.getLocale,
	},
	mutations: {
		SET_LOCALE: (state, getLocale) => {
			state.getLocale = getLocale
		},
	}
})

export default store

页面使用

<template>
	<view class="container">
      //第一种
      <text>{{applicationLocale==='zh-Hans'?list.Title2:list.Title2_EN}}</text>
      //第二种
      <text>{{list.Name}}</text>
    </view>
</template>

<script>
	export default {
		data() {
			return {
				list: [], //资源包的数据
                SceneData: {}, //上一页携带的参数
				applicationLocale: '', //语言
			};
		},
		onLoad(e) {
            this.applicationLocale = this.$store.state.getLocale

            //第二种，直接在函数中判断赋值，template中正常写
			this.GetDataGramsList()
			
            //第一种，获取到上一页参数，然后直接在template中使用三元表达式判断即可
            //这里上一页参数就是后端传过来的数据
            this.SceneData = JSON.parse(e.Scene)
			uni.setNavigationBarTitle({
				title: this.SceneData.Name,
			})
		},
        methods: {
			GetDataGramsList() {
				let that = this
				this.api.GetDataGramsList({
					sceneid: that.SceneData.Id
				}).then(res => {
					this.list = res.data.Data
					this.list.forEach(i => {
						if (this.applicationLocale !== 'zh-Hans') {
							i.Name = i.Name_EN
							i.Img = i.Img_EN
							i.Id = i.Id
							i.Introduction = i.Introduction_EN
							i.Scene = i.Scene_EN
						}
					})
				})
			},
		}
    }
</script>

3、系统

（1）页面标题替换

 pages.json固定数据

{
	"pages": [ //pages数组中第一项表示应用启动页，参考：https://uniapp.dcloud.io/collocation/pages
		{
			"path": "pages/homr/index",
			"style": {
				"navigationBarTitleText": "%index.title%"
			}
		}, {
			"path": "pages/word/index",
			"style": {
				"navigationBarTitleText": "%index.word%",
				"enablePullDownRefresh": false
			}
		}
	],
}

动态参数--由后端返回的数据作为标题

 pages.json

{
	"pages": [
		{
			"path": "pages/word/index",
			"style": {
				"navigationBarTitleText": "",
				"enablePullDownRefresh": false
			}
		}
	],
}

页面

onLoad(e) {
			let that = this
			this.content = JSON.parse(e.item)
            
			if (this.$store.state.getLocale === 'zh-Hans') {
				uni.setNavigationBarTitle({
					title: that.content.Name,
				})
			} else {
				uni.setNavigationBarTitle({
					title: that.content.Name_EN,
				})
			}
		},

（2）导航栏替换

 pages.json固定数据

{
	"tabBar": {
		"color": "#7A7E83",
		"selectedColor": "#007AFF",
		"borderStyle": "black",
		"backgroundColor": "#F8F8F8",
		"list": [{
				"pagePath": "pages/home/index",
				"text": "%index.home%"
			},
			{
				"pagePath": "pages/word/index",
				"text": "%index.word%"
			}
		]
	},
}

若是不生效那就只能在tab页面中使用uni.setTabBarItem

我是把所有的都写了首页的onShow里面 

onShow() {
			uni.setTabBarItem({
				index: 0,
				pagePath: "pages/index/index",
				iconPath: "static/syicon1.png",
				selectedIconPath: "static/syicon2.png",
				text: this.$t('pages.home')
			})
			uni.setTabBarItem({
				index: 1,
				pagePath: "pages/word/index",
				iconPath: "static/chanpin.png",
				selectedIconPath: "static/wjicon.png",
				text: this.$t('pages.word')
			})
			uni.setTabBarItem({
				index: 2,
				pagePath: "pages/me/index",
				iconPath: "static/wdicon1.png",
				selectedIconPath: "static/wdicon2.png",
				text: this.$t('pages.me')
			})
		},

（3）弹窗文字替换

uni.showModal({
	title: "提示",
	content: "请输入正确的信息！",
	success: res => {
		if (res.confirm) {
			this.popupShow = true
			} else {}
		}
	});


uni.showModal({
	title: this.$t('uniapp.title'),
	content: this.$t('uniapp.content'),
	success: res => {
		if (res.confirm) {
			this.popupShow = true
			} else {}
		}
	});