小程序版聊天室|聊天小程序|仿微信聊天界面小程序

仿微信聊天小程序weChatRoom案例，一款基于微信小程序开发的聊天室实战项目。很早之前就有开发过一个h5版聊天室，最近又在原先思路的基础上开发了个小程序版聊天室，功能效果非常接近微信聊天，实现了消息、表情发送，小程序表情解析，图片、视频上传预览，打赏、红包等微交互场景。整体界面风格及效果挺不错哒。

◆ 先睹为快

◆ 项目中用到的弹窗插件，是自己开发的小程序弹窗组件wcPop：

<!-- <>引入弹窗模板.Start -->
<import src="/utils/component/wcPop/tpl.wxml" />
<template is="popup" data="{{ ...__options }}" />
<!-- <>引入弹窗模板.End -->

◆ 小程序消息记录数据

module.exports = [
  { id: "msg1", msgtype: 1, isme: "", avatar: "", author: "", msg: "2019年01月20日 上午11:11", imgsrc: "", videosrc: "" }, //时间提醒
  { id: "msg2", msgtype: 2, isme: "", avatar: "", author: "", msg: "当前群聊人数较多，为了信息安全，请注意聊天隐私", imgsrc: "", videosrc: "" }, //公告提醒
  { id: "msg3", msgtype: 1, isme: "", avatar: "", author: "", msg: "2019年01月20日 上午11:15", imgsrc: "", videosrc: "" }, //时间提醒
  { id: "msg4", msgtype: 3, isme: false, avatar: "../../img/uimg/u__chat-img01.jpg", author: "马总(Alibaba)", msg: "本聊天室每日10:00开22:00关期间请各位会员遵守规则禁止发言，多次警告无效踢出聊天室，永久黑名单禁止进入。", imgsrc: "", videosrc: "" }, //文字消息【别人】
  { id: "msg5", msgtype: 3, isme: true, avatar: "../../img/uimg/u__chat-img14.jpg", author: "Nice奈斯", msg: "老板，表示下呗！", imgsrc: "", videosrc: "" }, //文字消息【自己】
  { id: "msg6", msgtype: 4, isme: false, avatar: "../../img/uimg/u__chat-img02.jpg", author: "Sweet甜心", msg: "", imgsrc: "http://pic.sc.chinaz.com/files/pic/pic9/201901/hpic523.jpg", videosrc: "" }, //图片消息【别人】
  {
    id: "msg7", msgtype: 3, isme: false, avatar: "../../img/uimg/u__chat-img12.jpg", author: "flower花花", msg: "坐等群主的红包哇！:63:", imgsrc: "", videosrc: "" }, //文字消息-含表情【别人】
  { id: "msg8", msgtype: 1, isme: "", avatar: "", author: "", msg: "01月20日 下午14:35", imgsrc: "", videosrc: "" }, //时间提醒
  { id: "msg9", msgtype: 3, isme: false, avatar: "../../img/uimg/u__chat-img04.jpg", author: "BBK(小龙哥)", msg: "微信公开课演讲文稿，大家有时间的话可以去看看。:33::33::33:", imgsrc: "", videosrc: "" }, //文字消息-含链接【别人】
  { id: "msg10", msgtype: 5, isme: false, avatar: "../../img/uimg/u__chat-img04.jpg", author: "BBK(小龙哥)", msg: "", imgsrc: "http://p3.pstatp.com/large/tos-cn-i-0004/39a6ed910d794ea8a6d85860b3464e82", videosrc: "https://v1-tt.ixigua.com/a69066ac303ccae7a155145000555100/5c4abb6b/video/m/2208ef8c54b15ae4be9babf28a888fe6d2411612e7f20000b9e74fcbf091/?rc=anF0NGx0N25tajMzZzczM0ApQHRAbzU1NTU8MzQzMzU2NDUzNDVvQGgzdSlAZjN1KWRzcmd5a3VyZ3lybHh3Zjo1QC1kYGdfcWowb18tLWEtL3NzLW8jbyM2LjYvMjYtLi8tMTIuNi06I28jOmEtcSM6YHZpXGJmK2BeYmYrXnFsOiMuLl4%3D&vfrom=xgplayer" }, //视频消息【别人】
  { id: "msg11", msgtype: 3, isme: true, avatar: "../../img/uimg/u__chat-img14.jpg", author: "Nice奈斯", msg: "优秀！好棒棒呀~~ 向大佬学习。:79:", imgsrc: "", videosrc: "" }, //文字消息-含表情【自己】
  { id: "msg12", msgtype: 2, isme: "", avatar: "", author: "", msg: "'Luci（王巧巧）' 撤回了一条消息", imgsrc: "", videosrc: "" }, //公告提醒
  { id: "msg13", msgtype: 4, isme: false, avatar: "../../img/uimg/u__chat-img11.jpg", author: "Luci（王巧巧）", msg: "", imgsrc: "http://y3.ifengimg.com/bbc8b9401db0d57e/2014/0721/rdn_53ccd985694da.gif", videosrc: "" }, //图片消息【别人】
  { id: "msg14", msgtype: 5, isme: true, avatar: "../../img/uimg/u__chat-img14.jpg", author: "Nice奈斯", msg: "", imgsrc: "http://pic.rmb.bdstatic.com/mvideo/70a0790d49998653eb2deb1cadfbdf93", videosrc: "https://vd3.bdstatic.com/mda-ik6254k2dwqi75zr/mda-ik6254k2dwqi75zr.mp4" }, //视频消息【自己】
  { id: "msg15", msgtype: 6, isme: false, avatar: "../../img/uimg/u__chat-img03.jpg", author: "科比", msg: "", imgsrc: "../../img/emotion/face04/0.gif", videosrc: "" }, //文字消息-含大表情【别人】
  { id: "msg16", msgtype: 3, isme: true, avatar: "../../img/uimg/u__chat-img14.jpg", author: "Nice奈斯", msg: "哈哈哈~~~ 能不能好好聊天，太TM搞笑了，真是笑屎我了。:28:", imgsrc: "", videosrc: "" }, //文字消息-含表情【自己】
];

◆ 聊天页面数据处理

// pages/groupChat/groupChat.js

var util = require('../../utils/util.js');

import { wcPop } from '../../utils/component/wcPop/tpl.js';

const emotions = require('./emotion-mock-data.js');
const messages = require('./chat.mock-data.js');
var emojParse = require('./emojParse.js');

Page({

  /**
   * 页面的初始数据
   */
  data: {
    cursorSpacing: 15, //光标与键盘的距离
    toView: "scrollBottom", //定位到聊天底部
    isEditorFocus: false, //编辑器获取焦点
    isEditorPreview: false, //编辑器消息预览

    // 消息记录
    __messages: messages,

    // 表情集合
    __emotions: emotions.list,

    // 预览图片地址
    previewImgList: [],


  },

  onLaunch: function(){
    // ...
  },

  onLoad: function () {
    // 初始化解析表情
    emojParse.init(this, ":_/");

    // 解析消息记录里面的表情符号
    var _messages = this.data.__messages;
    for (var i = 0, len = _messages.length; i < len; i++) {
      // 解析含表情的消息
      if (_messages[i].msgtype == 3){
        // 解析消息记录表情字符串
        _messages[i].msg = { emojiTextArray: emojParse.transEmojStr(_messages[i].msg)};
      }
    }
    this.setData({
      __messages: _messages
    });
  },


  /**
   * 聊天页面JS功能模块-------------------------------------------------
  */
  // 滚动聊天底部
  bindToMsgBottom: function (e) {
    var that = this;
    setTimeout(function(){that.setData({ toView: "scrollBottom" });}, e ? 100 : 0);
  },

  // 点击聊天面板区域
  bindTapMsgPanel: function (e) {
    this.setData({ isShowChoosePanel: false });
  },

  // 表情/选择区切换
  bindSwtEmotion: function (e) {
    var that = this;
    this.setData({
      isShowChoosePanel: true, isShowEmotion: true, isShowChoose: false,
    });
    // 滚动到聊天底部
    this.bindToMsgBottom();
  },
  bindSwtChoose: function (e) {
    var that = this;
    this.setData({
      isShowChoosePanel: true, isShowEmotion: false, isShowChoose: true,
    });
    // 滚动到聊天底部
    this.bindToMsgBottom();
  },
  // 底部多表情切换
  bindSwtEmotionBar: function(e) {
    var idx = e.currentTarget.dataset.index;
    var _lists = this.data.__emotions;
    for (var i = 0, len = _lists.length; i < len; i++){
      _lists[i].selected = false;
    }
    _lists[idx].selected = true;
    this.setData({ __emotions: _lists });
  },

  // 点击大图
  bindGifImageTap: function (e) {
    wx.showLoading({title: '发送中...',});

    var that = this;
    var _messages = this.data.__messages;
    var _len = _messages.length;
    var gifpath = e.currentTarget.dataset.path;

    // 消息队列
    var _data = {
      id: `msg${++_len}`,
      msgtype: 6, //大表情
      isme: true,
      avatar: "../../img/uimg/u__chat-img14.jpg",
      author: "Nice奈斯",
      msg: "",
      imgsrc: gifpath,
      videosrc: ""
    };
    _messages = _messages.concat(_data);
    this.setData({ __messages: _messages });
    setTimeout(function () { wx.hideLoading(); }, 100);

    // 滚动到聊天底部
    this.bindToMsgBottom(true);
  },

  // 选择图片
  bindChooseImage: function (e) {
    var that = this;
    var _messages = this.data.__messages;
    var _len = _messages.length;

    // 消息队列
    var _data = {
      id: `msg${++_len}`,
      msgtype: 4, //发送图片
      isme: true,
      avatar: "../../img/uimg/u__chat-img14.jpg",
      author: "Nice奈斯",
      msg: "",
      imgsrc: "",
      videosrc: ""
    };

    wx.chooseImage({
      count: 1,
      success: function(res) {
        // console.log(res);
        // console.log(res.tempFilePaths);

        _data.imgsrc = res.tempFilePaths.toString(); //把单张数组格式图片转换为字符串格式
        _messages = _messages.concat(_data);
        that.setData({ __messages: _messages });

        // 滚动到聊天底部
        that.bindToMsgBottom(true);
      },
    })
  },

  // 预览图片
  bindPreviewImage: function (e) {
    // 遍历所有当前聊天记录图片
    var _src = e.currentTarget.dataset.src;
    var _messages = this.data.__messages;
    var _imglist = this.data.previewImgList;
    for (var i = 0, len = _messages.length; i < len; i++) {
      if (_messages[i].imgsrc != "" && _messages[i].msgtype == 4) {
        if (_imglist.indexOf(_messages[i].imgsrc) == -1) {
          _imglist.push(_messages[i].imgsrc);
        }
      }
    }
    // preview images
    wx.previewImage({
      current: _src,
      urls: _imglist,
    })
  },

  // 预览视频
  bindPreviewVideo: function (e) {
    var _id = e.currentTarget.dataset.id;
    this.playContext = wx.createVideoContext("video_" + _id, this);

    this.playContext.play();
    this.playContext.requestFullScreen({ direction: 0 });
  },
  // 全屏事件
  bindFullscreenchange: function (e) {
    var _id = e.currentTarget.dataset.id;
    this.fullchangeContext = wx.createVideoContext("video_" + _id, this);

    if (e.detail.fullscreen == false){
      this.fullchangeContext.pause();
      this.fullchangeContext.exitFullScreen();
    }
  },
  // 视频播放结束
  bindEndedVideo: function (e) {
    var _id = e.currentTarget.dataset.id;
    this.stopContext = wx.createVideoContext("video_" + _id, this);

    this.stopContext.stop();
    this.stopContext.exitFullScreen();
  },

  // 打赏
  bindDashang: function (e) {
    var dsIdx = wcPop({
      skin: 'android',
      content: ['wc__tmpl_dashang'],
      xclose: true,
      shadeClose: false,
      style: 'background: #f3f3f3;',
    });
  },

  // 发送红包
  bindHongbao: function (e) {
    var hbIdx = wcPop({
      skin: 'android',
      content: ['wc__tmpl_hongbao'],
      xclose: true,
      shadeClose: false,
      style: 'background: #f3f3f3;',
    });
  },


})