uniapp实现全局悬浮框(按钮,页面,图片自行设置) 可拖动
话不多说直接上干货
1,在components新建组件(省去了每个页面都要引用组件的麻烦)

2,实现代码

<template>
	<view class="call-plate" :style="'top:' + top + 'px;left:' + left + 'px;'" @touchmove="touchmove" @touchend="touchend" @touchstart="touchstart" v-if="popupShow">
		通话中悬浮框
	</view>
</template>

<script>
	export default {
		name: "call-screen",
		emits: ["hide", "confirm"],
		props: {
			/**
			 * 默认号码
			 */
			number: {
				type: String,
				default: ""
			}
		},
		data() {
			return {
				popupShow: true, // 是否显示当前页面
				top: 0,
				left: 0,
				startTop: 0,
				startLeft: 0,
				startClientTop: 0,
				startClientLeft: 0,
			}
		},
		watch: {
			
		},
		computed: {
			i18n() {
				return this.$t
			}
		},
		created() {
			this.top = getApp().globalData.callShowTop  // 获取全局存储的位置,也可以使用本地缓存存储
			this.left = getApp().globalData.callShowLeft
			let that = this
			// 全局通知 具体字符串自行设置即可
			uni.$on(this.global.CALL_SHOW_UPDATE, res => { // 更新每个页面悬浮框位置
				that.top = getApp().globalData.callShowTop
				that.left = getApp().globalData.callShowLeft
			})
			uni.$on(this.global.CALL_SHOW_OPEN, res => { // 打开每个页面悬浮框
				that.popupShow = true
			})
			uni.$on(this.global.CALL_SHOW_CLOSE, res => { // 关闭每个页面悬浮框
				that.popupShow = false
			})
		},
		onShow() {
			
		},
		mounted() {
			
		},
		methods: {
			touchmove(e) {
				// 单指触摸
				if (e.touches.length !== 1) {
					return false;
				}
				this.top = e.changedTouches[0].clientY - this.startClientTop + this.startTop 
				this.left = e.changedTouches[0].clientX - this.startClientLeft + this.startLeft
			},
			touchend(e) {
				getApp().globalData.callShowTop = this.top
				getApp().globalData.callShowLeft = this.left
				uni.$emit(this.global.CALL_SHOW_UPDATE) // 更新每个页面悬浮框位置
			},
			touchstart(e){
				this.startTop = this.top
				this.startLeft = this.left
				this.startClientTop = e.changedTouches[0].clientY
				this.startClientLeft = e.changedTouches[0].clientX
			}
		}
	}
</script>

<style lang="scss" scoped>
	.call-plate {
		display: flex;
		position: absolute;
		width: 90px;
		height: 160px;
		z-index: 9999999;
		background-color: yellow;
	}
</style>

在 App.vue中全局存储悬浮框位置信息
globalData: {
	callShowTop: 100, // 悬浮框top
	callShowLeft: 100, // 悬浮框left
},

3,在每个需要用到悬浮框的页面引入

<template>
	<view class="content">
        <!--组件引用-->
		<call-screen></call-screen>
	</view>
</template>

发通知控制显示隐藏悬浮框
uni.$emit(that.global.CALL_SHOW_CLOSE)
uni.$emit(that.global.CALL_SHOW_OPEN)

4,实现效果

每个页面切换后都会更新最新位置