小程序怎么导入sdk实现聊天功能

小程序怎么导入sdk实现聊天功能

首先使用npm进行下载腾讯云的即时聊天sdk；然后在项目中进行引用并进行sdk初始化；再根据后台接口返回userID，userSig这两个参数判断当前登录人是谁；最后根据文档实现基础功能即可。

示例代码

wxml：

<scroll-view  bindscroll="refresh" scroll-into-view="{{toView}}" style="height: {{scroll_height}}px;" upper-threshold="100" scroll-y="true" enable-back-to-top="true" class="message-list">
  <!-- 每一行 -->
  <view class="row" wx:for="{{messages}}" wx:key="{{index}}" id="row_{{index}}">
    <!-- 日期 -->
    <view class="datetime" wx:if="{{item.msgTime != &#39;&#39;}}">{{item.msgTime}}</view>
    <!-- 头像与内容文本 -->
    <view class="body" style="flex-flow: {{item.flow == &#39;in&#39; ? &#39;row&#39; : &#39;row-reverse&#39;}}">
      <view class="avatar-container">
        <image wx:if="{{item.flow==&#39;in&#39;}}" class="avatar" src="{{friendAvatarUrl}}" />
        <image wx:else class="avatar" src="{{userData.avatarUrl}}" />
      </view>
      <!-- 画对话框 -->
      <view class="triangle" style="{{item.flow == &#39;out&#39; ? &#39;right: 140rpx; background: #7ECB4B&#39; : &#39;left: 140rpx;&#39;}}"></view>
      <view class="content" style="{{item.flow == &#39;out&#39; ? &#39;background: #7ECB4B&#39; : &#39;&#39;}}">
        <view wx:if="{{item.type === &#39;TIMTextElem&#39;}}">{{item.payload.text}}</view>
        <image class="image-message" wx:elif="{{item.type === &#39;TIMImageElem&#39;}}" src="{{item.payload.imageInfoArray[1].url}}" bindtap="previewImage" data-src="{{item.payload.imageInfoArray[1].url}}"></image>
        <view wx:elif="{{item.type === &#39;TIMSoundElem&#39;}}" url="{{item.payload.url}}">
          <view class="box" bindtap="openAudio" data-eventid="{{&#39;13_&#39;+index}}"  data-time="{{item.payload.second}}" data-comkey="{{item.payload.url}}">
            <image  src="{{&#39;13_&#39;+index==audioIndex?audioGif:audioPng}}" style="height:22px;width:22px" class="_image"></image>
            <view style="padding-left: 4px;" class="_div data-v-afeb3abc">
              {{item.payload.second<1?1:item.payload.second}}s
            </view>
          </view>
        </view>
      </view>
    </view>
  </view>
</scroll-view>
<view class="reply" style="bottom:{{reply_height}}px;">
  <view class="Audio">
    <image wx:if="{{opration==true}}" bindtap="Audio" src="../image/Audio.png"></image>
    <image wx:else bindtap="keyboard" src="../image/keyboard.png"></image>
  </view>
  <view class="opration-area">
    <input bindfocus="bindfocus" wx:if="{{opration==true}}" type="text" bindinput="getContent" value="{{content}}" />
    <view wx:else class="voice-button {{touchBtn?&#39;hoverBtn&#39;:&#39;&#39;}}" bind:touchstart="startAudio" bind:touchend="onTouchEnd" bind:longpress="onLongpress" bind:touchmove="onTouchMove">
      {{touchBtn?&#39;松开 结束&#39;:&#39;按住说话&#39;}}
    </view>
  </view>
  <view class="{{sendBtn==true?&#39;send&#39;:&#39;sendActive&#39;}}" bindtap="sendMsg">发送</view>
  <view class="add" bind:tap="moreClick">
    <image class="more" src="../image/more.png"></image>
  </view>
  <!-- <view class="send" bindtap="sendImg">相册</view>
  <view class="send" bindtap="startAudio">开始</view>
  <view class="send" bindtap="endAudio">结束</view> -->
</view>
<view class="more_box" hidden="{{moreShow}}"> 
  <view class="more_item" bindtap="sendImg">
    <view class="img_box">
      <image src="../image/picture.png"></image>
    </view>
    <view style="margin-top:10rpx;">
      <text>相册</text>
    </view>
  </view>
</view>

js：

import TIM from 'tim-wx-sdk';
import COS from "cos-wx-sdk-v5";
let options = {
  SDKAppID: 0 // 接入时需要将0替换为您的即时通信 IM 应用的 SDKAppID
};
// 创建 SDK 实例，`TIM.create()`方法对于同一个 `SDKAppID` 只会返回同一份实例
let tim = TIM.create(options); // SDK 实例通常用 tim 表示
// 设置 SDK 日志输出级别，详细分级请参见 setLogLevel 接口的说明
tim.setLogLevel(1); // 普通级别，日志量较多，接入时建议使用
// tim.setLogLevel(1); // release 级别，SDK 输出关键信息，生产环境时建议使用
// 注册 COS SDK 插件
tim.registerPlugin({
  'cos-wx-sdk': COS
});
const app = getApp()
let recorderManager = wx.getRecorderManager();
// 录音部分参数 小程序文档
const recordOptions = {
  duration: 60000, // 录音的时长，单位 ms，最大值 600000（10 分钟）
  sampleRate: 44100, // 采样率
  numberOfChannels: 1, // 录音通道数
  encodeBitRate: 192000, // 编码码率
  format: 'aac' // 音频格式，选择此格式创建的音频消息，可以在即时通信 IM 全平台（Android、iOS、微信小程序和Web）互通
};
Page({
  data: {
    friendId: '',
    friendName: '',
    friendAvatarUrl: '',
    messages: [], // 消息集合
    complete: 0, // 是否还有历史消息可以拉取，1 - 表示没有，0 - 表示有
    content: '', // 输入框的文本值
    lock: false, // 发送消息锁 true - 加锁状态 false - 解锁状态
    scroll_height: wx.getSystemInfoSync().windowHeight - 54,
    reply_height: 0,
    moreShow: true,
    userData: [],
    
    audioPng:"../image/audio-play.png",
    audioGif:"../image/audio-play.gif",
    audioState:true,
    /**
     * 历史消息消息集合（结构如下）：
     * nextReqMessageID 用于续拉，分页续拉时需传入该字段。
     * isCompleted 表示是否已经拉完所有消息。
     */
    nextReqMessageID: "",
    isCompleted: "",
    isFirstGetList: true,
    audioContext: null,
    opration: true,
    touchBtn: false,
    recording: false,
    stopflag: false,
    cancelRecord: false,
    refreshTime: '',
    ScrollLoading: 0,
    audioIndex:null,
    sendBtn:true
  },
  onLoad: function (options) {
    // 
    this.setData({
      friendId: options.friendId,
      friendName: options.friendName,
      friendAvatarUrl: options.friendAvatarUrl,
      conversationID: options.conversationID
    })
    wx.setNavigationBarTitle({
      title: options.friendName
    })
    var that = this
    var userData = JSON.parse(wx.getStorageSync('userData'))
    that.data.messages = [] // 清空历史消息
    let audioContext = wx.createInnerAudioContext()
    this.setData({
      userData,
      audioContext
    })
    // 将某会话下所有未读消息已读上报
    let promise = tim.setMessageRead({ conversationID: options.conversationID });
    promise.then(function (imResponse) {
      // 已读上报成功
    }).catch(function (imError) {
      // 已读上报失败
    });
  },
  onShow: function () {
    let that = this;
    // 获取当前聊天的历史列表
    that.getMessageList();
    that.scrollToBottom();
    // 获取收到的单聊信息
    let onMessageReceived = function (event) {
      // event.data - 存储 Message 对象的数组 - [Message]
      let msgList = that.data.messages
      handlerHistoryMsgs(event.data, that)
      that.scrollToBottom();
    };
    tim.on(TIM.EVENT.MESSAGE_RECEIVED, onMessageReceived)
    // 监听录音结束
    recorderManager.onStop(function (res) {
      if (that.data.recording) {
        if (that.data.cancelRecord) {
          wx.hideToast()
          that.setData({
            cancelRecord: false
          })
        } else {
          // 创建消息实例，接口返回的实例可以上屏
          const message = tim.createAudioMessage({
            to: that.data.friendId,
            conversationType: TIM.TYPES.CONV_C2C,
            payload: {
              file: res
            },
            onProgress: function (event) { }
          });
          //  发送消息
          let promise = tim.sendMessage(message);
          promise.then(function (imResponse) {
            // 发送成功
            that.addMessage(imResponse.data.message, that)
          }).catch(function (imError) {
            // 发送失败
          });
          that.setData({
            recording: false
          })
        }
      } else {
        wx.showToast({
          title: '说话时间太短',
          duration: 1000,
          image: '../image/err.png'
        })
      }
    });
  },
  onUnload: function () {
  },
  /**
   * 获取消息列表
   */
  getMessageList() {
    let that = this;
    let cb = tim.getMessageList({
      conversationID: conversationID,//会话列表传递过来的参数
      count: 15
    })
    cb.then(function (imResponse) {
      const messageList = imResponse.data.messageList; // 消息列表。
      const nextReqMessageID = imResponse.data.nextReqMessageID; // 用于续拉，分页续拉时需传入该字段。
      const isCompleted = imResponse.data.isCompleted; // 表示是否已经拉完所有消息。
      that.setData({
        nextReqMessageID: nextReqMessageID,
        isCompleted: isCompleted
      })
      handlerHistoryMsgs(messageList, that);
      that.scrollToBottom();
    });
  },
  /**
   * 获取文本的消息
   */
  getContent: function (e) {
    if(e.detail.value ==""){
      this.setData({sendBtn:true})
    }else{
      this.setData({sendBtn:false})
    }
    console.log(e)
    var that = this;
    that.setData({
      content: e.detail.value
    })
  },
  /**
   * 发送消息
   */
  sendMsg: function (e) {
    if(this.data.content ==""){
      wx.showToast({
        title: '请输入内容',
        duration: 1000,
        icon:'none'
      })
      return
    }
    var that = this
    // 发送文本消息，Web 端与小程序端相同
    // 1. 创建消息实例，接口返回的实例可以上屏
    let message = tim.createTextMessage({
      to: this.data.friendId,
      conversationType: TIM.TYPES.CONV_C2C,
      payload: {
        text: this.data.content
      }
    });
    // 2. 发送消息
    let promise = tim.sendMessage(message);
    promise.then(function (imResponse) {
      // 发送成功
      that.addMessage(imResponse.data.message, that)
      that.setData({sendBtn:true})
    }).catch(function (imError) {
      // 发送失败
    });
  },
  /**
   * 刷新文本消息
   */
  addMessage: function (msg, that) {
    var messages = that.data.messages;
    messages.push(msg);
    that.setData({
      messages: messages,
      content: '' // 清空输入框文本
    })
    that.scrollToBottom();
  },
  /**
   * 发送图片消息
   */
  sendImg() {
    let that = this;
    wx.chooseImage({
      sourceType: ['album'], // 从相册选择
      count: 1, // 只选一张，目前 SDK 不支持一次发送多张图片
      success: function (res) {
        // 2. 创建消息实例，接口返回的实例可以上屏
        let message = tim.createImageMessage({
          to: that.data.friendId,
          conversationType: TIM.TYPES.CONV_C2C,
          payload: {
            file: res
          },
          onProgress: function (event) {
          }
        });
        // 3. 发送图片
        let promise = tim.sendMessage(message);
        promise.then(function (imResponse) {
          // 发送成功
          that.addMessage(imResponse.data.message, that)
        }).catch(function (imError) {
          // 发送失败
        });
      }
    })
  },
  scrollToBottom: function () {
    this.setData({
      toView: 'row_' + (this.data.messages.length - 1)
    });
  },
  previewImage(e) {
    let src = '';
    wx.previewImage({
      current: e.currentTarget.dataset.src, // 当前显示图片的http链接
      urls: [e.currentTarget.dataset.src]
    })
  },
  // 录制语音
  startAudio: function () {
    wx.showToast({
      title: '上滑取消发送',
      duration: 10000,
      image: '../image/cancel.png'
    })
    this.setData({
      touchBtn: true
    })
    if (this.data.stopFlag) {
      return;
    }
    recorderManager.start(recordOptions);
    recorderManager.onError(function (errMsg) {
    });
  },
  // # 利用长按判断录音是否太短
  onLongpress() {
    this.setData({
      recording: true
    })
  },
  // 发送录音
  onTouchEnd: function () {
    wx.hideToast()
    let that = this;
    that.setData({
      touchBtn: false
    })
    if (that.data.stopFlag) {
      return;
    }
    if (that.data.recording) {
      recorderManager.stop();
    } else {
      that.setData({
        stopFlag: true
      })
      setTimeout(() => {
        recorderManager.stop();
        that.setData({
          stopFlag: false
        })
      }, 400);
    }
  },
  // 播放语音
  openAudio(audio) {
    console.log(audio)
    let index = audio.currentTarget.dataset.eventid
    this.setData({
      audioIndex:index
      // audioState:false
    })
    this.data.audioContext.src = audio.currentTarget.dataset.comkey
    this.data.audioContext.autoplay = true;
    this.data.audioContext.play()
    this.data.audioContext.onPlay((res) => {
    })
    this.data.audioContext.onEnded(() => {
      wx.hideToast()
      this.setData({
        audioIndex:null
      })
      console.log("语音结束了")
    })
    this.data.audioContext.onError((res) => {
    })
  },
  // 上滑取消
  onTouchMove(e) {
    if (e.touches[0].clientY < 520) {
      // # 取消发送
      this.setData({
        cancelRecord: true
      });
      wx.showToast({
        title: &#39;松开，取消发送&#39;,
        duration: 10000,
        image: &#39;../image/cancel.png&#39;
      })
    } else {
      // # 不取消
      wx.hideToast()
      wx.showToast({
        title: &#39;上滑取消发送&#39;,
        duration: 10000,
        image: &#39;../image/cancel.png&#39;
      })
      this.setData({
        cancelRecord: false
      })
    }
  },
  // 下拉加载聊天记录
  refresh: function (e) {
    let that = this
    if (that.data.ScrollLoading == 1) { //防止多次触发
      return false
    }
    if (e.detail.scrollTop < 1) {
      that.setData({ ScrollLoading: 1 })
      wx.showLoading({
        title: &#39;加载中&#39;,
      })
      setTimeout(() => {
        let promise = tim.getMessageList({ conversationID: that.data.conversationID, nextReqMessageID: that.data.nextReqMessageID, count: 15 });
        promise.then(function (imResponse) {
          const newMessageList = imResponse.data.messageList; // 消息列表。
          const nextReqMessageID = imResponse.data.nextReqMessageID; // 用于续拉，分页续拉时需传入该字段。
          const isCompleted = imResponse.data.isCompleted; // 表示是否已经拉完所有消息。
          that.setData({
            nextReqMessageID: nextReqMessageID,
            isCompleted: isCompleted,
            messages: newMessageList.concat(that.data.messages)
          })
          wx.hideLoading()
          that.setData({ ScrollLoading: 0 })
          // handlerHistoryMsgs(messageList, that);
        });
      }, 800);
    }
    // setTimeout(function(){
    //   var date = new Date();
    // },300);
  },
  // 切换
  Audio() {
    this.setData({
      opration: false
    })
  },
  keyboard() {
    this.setData({
      opration: true
    })
  },
  moreClick() {
    if (this.data.moreShow) {
      this.setData({
        moreShow: false,
        reply_height: 92,
        scroll_height: this.data.scroll_height - 92
      })
    }
  },
  bindfocus() {
    this.setData({
      moreShow: true,
      reply_height: 0,
      scroll_height: wx.getSystemInfoSync().windowHeight - 54
    })
  }
})
/**
 * 处理历史消息 
 */
function handlerHistoryMsgs(result, that) {
  var historyMsgs = that.data.messages;
  result.forEach(item => {
    historyMsgs.push(item)
  })
  // historyMsgs.push(result[0])
  that.setData({
    messages: historyMsgs,
  })
    // 将某会话下所有未读消息已读上报
    let promise = tim.setMessageRead({ conversationID: that.data.conversationID });
    promise.then(function (imResponse) {
      // 已读上报成功
    }).catch(function (imError) {
      // 已读上报失败
    });
}

wxss：

/** 聊天窗口样式
 * 54px为回复框高度，js同
 */
/*聊天记录*/
page{
  background: rgb(245, 245, 245);
}
.message-list {
  /*margin-bottom: 54px;*/
  background: rgb(235, 235, 235);
}
/*单元行*/
.row {
  display: flex;
  flex-direction: column;
  margin: 0 30rpx;
}
/*日期*/
.datetime {
  font-size: 10px;
  padding: 10px 0;
  color: #999;
  text-align: center;
}
.send {
  font-size: 15px;
  /* padding-right: 10px; */
  color: #999;
  text-align: center;
  height: 70%;
  border: 1px solid #e4dfdf;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 90rpx;
  border-radius: 10rpx;
}
.sendActive {
  font-size: 15px;
  /* padding-right: 10px; */
  color: #fff;
  text-align: center;
  height: 70%;
  border: 1px solid #05c15f;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 90rpx;
  border-radius: 10rpx;
  background-color: #05c15f;
}
.Audio {
  font-size: 15px;
  color: #999;
  text-align: center;
  padding-left: 10rpx;
}
.Audio image {
  width: 50rpx;
  height: 50rpx;
}
.add {
  height: 70%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 90rpx;
}
.more {
  width: 50rpx;
  height: 50rpx;
}
/*主体*/
.body {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  justify-content: flex-start;
  width: 100%;
  margin-top: 10px;
}
/*头像容器*/
.body.avatar-container {
  width: 20%;
}
/*头像*/
.body .avatar {
  width: 80rpx;
  height: 80rpx;
  border-radius: 50%;
  margin: 0 20rpx;
}
/*文本消息*/
.body .content {
  font-size: 16px;
  background: #fff;
  border-radius: 5px;
  padding: 10px;
  line-height: 22px;
  margin-bottom: 10px;
  word-wrap: break-word;
  max-width: 300rpx;
}
/* 三角箭头 */
.body .triangle {
  background: white;
  width: 20rpx;
  height: 20rpx;
  margin-top: 26rpx;
  transform: rotate(45deg);
  position: absolute;
}
/*图片消息*/
.picture {
  width: 160px;
}
/*回复框*/
.reply {
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  align-items: center;
  position: fixed;
  /* bottom: 0; */
  width: 100%;
  height: 54px;
  border-top: 1px solid rgb(215, 215, 215);
  background: rgb(245, 245, 245);
}
.reply .voice-image {
  width: 25px;
  height: 25px;
  margin-left: 3%;
}
/*文本输入或语音录入*/
.reply .opration-area {
  flex: 1;
  padding: 8px;
}
/*回复文本框*/
.reply input {
  background: rgb(252, 252, 252);
  height: 36px;
  border: 1px solid rgb(221, 221, 221);
  border-radius: 6px;
  padding-left: 3px;
}
/*选取图片*/
.reply .choose-image {
  width: 25px;
  height: 25px;
  margin-right: 3%;
}
/*按住说话button*/
.voice-button {
  height: 36px;
  color: #818181;
  font-size: 14px;
  line-height: 36px;
  text-align: center;
  border: 1px solid #e4dfdf;
  border-radius: 10rpx;
}
/*悬浮提示框*/
.hud-container {
  position: fixed;
  width: 150px;
  height: 150px;
  left: 50%;
  top: 50%;
  margin-left: -75px;
  margin-top: -75px;
}
/*背景层*/
.hud-background {
  position: absolute;
  width: 100%;
  height: 100%;
  background: #999;
  opacity: 0.8;
  z-index: 11;
  border-radius: 10px;
}
/*悬浮框主体*/
.hud-body {
  position: relative;
  width: 100%;
  height: 100%;
  z-index: 19;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
}
/*图标*/
.hud-body image {
  margin-top: 20px;
  width: 80px;
  height: 80px;
}
/*文字*/
.hud-body .tip {
  color: #fff;
  text-align: center;
  width: 90%;
  line-height: 34px;
  margin: 0 auto;
  margin-bottom: 10px;
  width: 90%;
}
.hud-body .warning {
  background: #c33;
  border-radius: 5px;
}
.image-message {
  max-width: 100%;
  border-radius: 4rpx;
}
.box {
  display: flex;
  height: 40rpx;
  line-height: 40rpx;
}
.hoverBtn {
  background-color: rgb(226, 220, 220);
  color: #fff;
  border-radius: 10rpx;
}
.more_box {
height: 138rpx;
width: 100%;
padding: 15rpx;
display: flex;
background: rgb(245, 245, 245);
position: fixed;
bottom: 0;
}
.more_item {
  text-align: center;
  height: 150rpx;
  font-size: 24rpx;
  margin-left: 26rpx
}
.img_box {
  width: 80rpx;
  height: 84rpx;
  background-color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 10rpx;
}
.img_box image {
  width: 40rpx;
  height: 40rpx;
}

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