uniapp+vue3实现音乐播放器，包含上一首、下一首、暂停、播放、下载音频、下载视频、进度条拖拽、歌词等

uni-app中实现音乐播放器

1、主要利用的是uni-app中提供的uni.createInnerAudioContext()来进行实现；

2、代码示例

（1）主页面代码展示

<template>
    <view class="songDetailContainer">
        <view class="bg" :style="{ backgroundImage: `url(${song.imageUrl})` }"></view>
        <view class="content">
            <view class="title">{{ song.title }}</view>
            <view class="discContainer discAnimation" v-show="current == 0">
                <view class="disc"></view>
                <view class="circle">
                    <image class="musicImg" :src="song.imageUrl"></image>
                </view>
            </view>
            <scroll-view
                class="h-full"
                :scroll-y="true"
                :refresher-enabled="false"
                :scroll-anchoring="true"
                v-show="current == 1"
            >
                <view class="prompt" v-html="song.lyric" style="white-space: pre-line"> </view>
            </scroll-view>

            <u-tabs
                class="u-tabs-con"
                :list="list1"
                @change="handleChange"
                :current="current"
                :scrollable="true"
                active-color="#fff"
                inactive-color="#ccc4c2"
                :gutter="20"
                :bar-width="20"
            ></u-tabs>
            <view class="share">
                <u-icon name="share" color="#fff" size="40" @click="shareClick"></u-icon>
                <text> 分享 </text>
            </view>
            <!-- 进度条控制区域 -->
            <view class="progressControl">
                <text>{{ currentTimeText }}</text>
                <slider
                    style="width: 560rpx"
                    @change="handleSliderChange"
                    :value="sliderIndex"
                    :max="maxSliderIndex"
                    activeColor="#ea588e"
                    backgroundColor="#b9c2c5"
                    block-color="#fff"
                    block-size="12"
                />
                <text>{{ totalTimeText }}</text>
            </view>

            <!-- 底部控制播放区域 -->
            <view class="musicControl">
                <u-icon name="star" color="#fff" size="60" @click="starClick"></u-icon>
                <u-icon
                    name="rewind-left-fill"
                    @click="handlePrev"
                    color="#fff"
                    size="60"
                    id="pre"
                ></u-icon>
                <u-icon
                    name="pause-circle-fill"
                    @click="onPauseAudio"
                    v-if="isPlay"
                    color="#fff"
                    size="80"
                ></u-icon>
                <u-icon
                    name="play-circle-fill"
                    @click="onPlayAudio"
                    v-else
                    color="#fff"
                    size="80"
                ></u-icon>
                <u-icon
                    name="rewind-right-fill"
                    @click="handleNext"
                    color="#fff"
                    size="60"
                    id="next"
                ></u-icon>
                <u-icon name="grid" @click="show = true" color="#fff" size="60"></u-icon>
            </view>
        </view>
    </view>
    <u-action-sheet
        class="action-sheet"
        :list="data.list"
        v-model="show"
        @click="sheetClick"
        cancel-text="关闭"
    ></u-action-sheet>
    <!-- #ifdef H5 -->
</template>

<script lang="ts" setup>
import { ref, reactive, onUnmounted } from 'vue'
import moment from 'moment'
import { onLoad } from '@dcloudio/uni-app'
import { download } from '@/utils/download'
import { drawingRecord } from '@/api/music'
let id = ref(0) // 歌曲详情对象
const song = ref({}) // 歌曲详情对象
const isPlay = ref(false) // 音乐是否播放
const currentTime2 = ref(0) // 实时时间
const audioList = ref([]) // 音乐列表
let index = 0
const show = ref(false)
const innerAudioContext = uni.createInnerAudioContext()
const startId = ref(0)
const endId = ref(0)
const sliderIndex = ref(0) //滑块当前值
const maxSliderIndex = ref(100) //滑块最大值
const currentTimeText = ref('00:00') //视频已播放长度文字
const totalTimeText = ref('00:00') //视频总长度文字
onLoad((options: any) => {
    id.value = options.id
    startId.value = options.startId
    endId.value = options.endId
    getAudioList()

})
const getAudioList = async () => {
    const { lists } = await drawingRecord({
        status: 3,
        startId: startId.value,
        endId: endId.value,
        pageNo: 1,
        pageSize: 100
    })
    audioList.value = lists
    for (let i = 0; i < audioList.value.length; i++) {
        if (audioList.value[i].id == id.value) {
            index = i
          console.info('index', i)
        }
    }
    song.value = audioList.value[index]
    innerAudioContext.autoplay = true
    innerAudioContext.src = song.value.audioUrl
    innerAudioContext.play()
    isPlay.value = true
}

innerAudioContext.onEnded(() => {
    isPlay.value = false
    currentTimeText.value = '00:00'
    sliderIndex.value = 0
    handleNext()
})
innerAudioContext.onTimeUpdate(() => {
    currentTimeText.value = moment(innerAudioContext.currentTime * 1000).format('mm:ss')
    sliderIndex.value = innerAudioContext.currentTime
})
innerAudioContext.onCanplay(function () {
    totalTimeText.value = moment(innerAudioContext.duration * 1000).format('mm:ss')
    maxSliderIndex.value = innerAudioContext.duration
})

innerAudioContext.onPause(() => {
    currentTime2.value = innerAudioContext.currentTime
})
innerAudioContext.onPlay(() => {
    innerAudioContext.seek(currentTime2.value)
    console.log(currentTime2.value, 'currentTime2.value')
})

const onPauseAudio = () => {
    innerAudioContext.pause()
    isPlay.value = false
}
const onPlayAudio = () => {
    innerAudioContext.src = song.value.audioUrl
    innerAudioContext.play()
    isPlay.value = true
}

const handlePrev = () => {
    innerAudioContext.stop()
    sliderIndex.value = 0
    currentTimeText.value = '00:00'
    currentTime2.value = 0
    if (index == 0) {
        index = audioList.value.length
    }

    innerAudioContext.src = audioList.value[index - 1].audioUrl
    song.value.title = audioList.value[index - 1].title
    song.value.imageUrl = audioList.value[index - 1].imageUrl
    song.value.duration = audioList.value[index - 1].duration
    song.value.lyric = audioList.value[index - 1].lyric
    innerAudioContext.play()
    isPlay.value = true
    index -= 1
    console.log(index, 'index')
}
const handleNext = () => {
    innerAudioContext.stop()
    sliderIndex.value = 0
    currentTimeText.value = '00:00'
    currentTime2.value = 0
    console.log(sliderIndex.value, currentTimeText.value, '下一首')
    if (index == audioList.value.length - 1) {
        index = -1
    }

    innerAudioContext.src = audioList.value[index + 1].audioUrl
    song.value.title = audioList.value[index + 1].title
    song.value.imageUrl = audioList.value[index + 1].imageUrl
    song.value.duration = audioList.value[index + 1].duration
    song.value.lyric = audioList.value[index + 1].lyric
    innerAudioContext.play()
    isPlay.value = true
    index += 1
    console.log(index, 'index')
}

// 文件下载
const onFileDownload = async (drawing: any) => {
    uni.setClipboardData({
        data: drawing,
        success: function () {
            uni.showToast({ title: '复制成功，请打开浏览器下载', duration: 2000 })
        }
    })
}

const data = reactive({
    list: [
        {
            text: '下载音频',
            fontSize: 28
        },
        {
            text: '下载视频',
            fontSize: 28
        }
    ]
})
const sheetClick = (index: number) => {
    if (index == 0) {
        onFileDownload(song.value.audioUrl)
    } else if (index == 1) {
        onFileDownload(song.value.videoUrl)
    }
}
//变更滑块位置
const handleSliderChange = (e) => {
    changePlayProgress(e.detail ? e.detail.value : e)
}
//更改播放进度
const changePlayProgress = (value: any) => {
    sliderIndex.value = value
    innerAudioContext.seek(value)
    currentTimeText.value = moment(value * 1000).format('mm:ss')
}
// tabs部分
const current = ref(0)
const list1 = ref([
    { customMode: 0, name: '歌曲' },
    { customMode: 1, name: '歌词' }
])

const handleChange = (index: number) => {
    current.value = index
}
const starClick = () => {
    uni.showToast({ title: '敬请期待' })
}
const shareClick = () => {
    uni.showToast({ title: '敬请期待' })
}
onUnmounted(() => {
    innerAudioContext.destroy()
})
</script>

<style lang="scss" scoped>
.songDetailContainer {
    height: 100vh;
    width: 100%;

    position: relative;
    .bg {
        width: 100%;
        height: 100vh;
        position: absolute;
        z-index: 0;
        background-size: cover;
        background-repeat: no-repeat;
        filter: blur(60px);
    }
    .content {
        display: flex;
        justify-content: space-around;
        flex-direction: column;
        align-items: center;
        .title {
            color: #fff;
            position: absolute;
            top: 30rpx;
        }
        .prompt {
            color: #fff;
            position: absolute;
            top: 80rpx;
            left: 40rpx;
            right: 40rpx;
            font-size: 38rpx;
            line-height: 68rpx;
        }
        .h-full {
            position: absolute;
            top: 120rpx;
            left: 40rpx;
            right: 40rpx;
            height: 800rpx;
            width: calc(100% - 80rpx);
        }
        .u-tabs-con {
            position: absolute;
            bottom: 300rpx;
            color: #fff;
        }
    }
}
.content ::v-deep .u-tabs {
    background: none !important;
}
.share {
    position: absolute;
    bottom: 320rpx;
    right: 50rpx;
    color: #fff;
    display: flex;
    align-items: center;
    text {
        margin-left: 10rpx;
        font-size: 24rpx;
    }
}
/* 磁盘 */
.discContainer {
    position: relative;
    top: 200rpx;
    // width: 598rpx;
    // height: 598rpx;
    width: 490rpx;
    height: 490rpx;
    border: 1rpx solid #e6e6e6;
    border-radius: 50%;
}

.discAnimation {
    animation: disc 8s linear infinite;
    animation-delay: 1s;
}

/*
  @keyframes: 设置动画帧
    1) from to
      - 使用于简单的动画，只有起始帧和结束帧
      - 北京 - 上海  直达
    2) 百分比
      - 多用于复杂的动画，动画不止两帧
      - 北京 - 上海 ---> 北京 -- 天津 --- 深圳 --- 上海
      - 0% - 100%, 可以任意拆分
*/
@keyframes disc {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.disc {
    width: 100%;
    height: 100%;
}

.songDetailContainer .discContainer .musicImg {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    margin: auto;
    width: 370rpx;
    height: 370rpx;
    border: 1rpx solid transparent;
    border-radius: 50%;
}
.circle {
    position: absolute;
    left: 30rpx;
    top: 30rpx;
    width: 430rpx;
    height: 430rpx;
    border: 1rpx solid #e6e6e6;
    border-radius: 50%;
}
/* 底部控制播放区域 */
.musicControl {
    position: absolute;
    bottom: 80rpx;
    left: 60rpx;
    width: calc(100% - 120rpx);
    display: flex;
    justify-content: space-between;
}
.musicControl text {
    width: 20%;
    height: 120rpx;
    line-height: 120rpx;
    text-align: center;
    color: #fff;
    font-size: 50rpx;
}
.musicControl text.big {
    font-size: 80rpx;
}
/* 进度条控制区域 */
.progressControl {
    position: absolute;
    bottom: 200rpx;
    width: 640rpx;
    height: 80rpx;
    line-height: 80rpx;
    display: flex;
    color: #fff;
}

.action-sheet ::v-deep .u-action-sheet-item {
  align-items: baseline;
  padding-left: 30rpx;
}
</style>

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