vist_go_uniApp/config/mixins/index.js

import store from '@/store'
export default {
	data() {
		return {
			pattern: '',
			fontMain: '',
			bgMain: ''
		}
	},
	onShow() {
		this.themeInit()
	},
	onReady() {
		this.themeInit()
	},

	methods: {

		themeInit() {
			this.pattern = store.getters.pattern
			this.setNavbar(this.pattern)
			this.setTabbar(this.pattern)
			this.fontMain = this.pattern == 'dark' ? '#FFFFFF' : '#000000'
			this.bgMain = this.pattern == 'dark' ? '#102030' : '#F6F6F6'
		},
		setNavbar(item) {
			if (item == 'dark') {
				uni.setNavigationBarColor({
					frontColor: "#ffffff",
					backgroundColor: "#102030"
				})
			} else {
				uni.setNavigationBarColor({
					frontColor: "white",
					backgroundColor: "rgb(9 56 106)"
				})
			}
		},
		setTabbar(item) {
			if (item == 'dark') {
				uni.setTabBarStyle({
					color: '#a2a6a5',
					selectedColor: '#1881d2',
					backgroundColor: '#16263e',
					borderStyle: 'black'
				})
			} else {
				uni.setTabBarStyle({
					color: '#999999',
					selectedColor: '#292C35',
					backgroundColor: '#ffffff',
					borderStyle: 'white'
				})
			}
		},
	}
}