Flutter高仿微信系列共59篇，从Flutter客户端、Kotlin客户端、Web服务器、数据库表结构、Xmpp即时通讯服务器、视频通话服务器、腾讯云服务器全面讲解。

 详情请查看

效果图：

详情请参考 Flutter高仿微信-第29篇-单聊 ， 这里只是提取语音聊天实现的部分代码。

实现代码：

//我的语言
Widget meVoiceWidget(){
  return InkWell(
      onTap: () {
        widget.clickVoiceCallback(true);
        setState(() {
          widget.chatBean.isPlayVoice = true;
        });
        //点击语音
        AudioPlayer.getInstance().playLocal(widget.chatBean.voiceLocal??"", callback: (data){
          //录音回调
          setState(() {
            widget.chatBean.isPlayVoice = false;
          });
        });
      },
      child : Container(
        width: 120,
        height: 40,
        padding: EdgeInsets.symmetric(vertical: 4.0, horizontal: 2.0),
        decoration: BoxDecoration(borderRadius: BorderRadius.all(Radius.circular(1.0),),color: Color(0xFF9EEA6A),),
        child: Row(
          crossAxisAlignment: CrossAxisAlignment.center,
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text("${widget.chatBean.second}''"),
            SizedBox(width: 4,),
            widget.chatBean.isPlayVoice?Image.asset("assets/chat/wn_chat_me_animator.gif", height: 24,):Image.asset("assets/chat/wn_chat_me_volume_3.png", height: 24,),
          ],
        ),
      )
  );
}

//朋友的语音
Widget toVoiceWidget(){
  return InkWell(
      onTap: () {
        setState(() {
          widget.chatBean.isPlayVoice = true;
        });
        LogUtils.d("点击语音");
        AudioPlayer.getInstance().playLocal(widget.chatBean.voiceLocal??"", callback: (data){
          LogUtils.d("录音回调：${data}");
          setState(() {
            widget.chatBean.isPlayVoice = false;
          });
        });
      },
      child : Container(
        width: 120,
        height: 40,
        padding: EdgeInsets.symmetric(vertical: 4.0, horizontal: 2.0),
        decoration: BoxDecoration(borderRadius: BorderRadius.all(Radius.circular(5.0),),color: Color(0xFFEDEDED)),
        child: Row(
          crossAxisAlignment: CrossAxisAlignment.center,
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            widget.chatBean.isPlayVoice?Image.asset("assets/chat/wn_chat_other_animator.gif", height: 34,):Image.asset("assets/chat/wn_chat_other_volume_3.png",  height: 34,),
            SizedBox(width: 4,),
            Text("${widget.chatBean.second}''"),
          ],
        ),

      )
  );
}

//发送多媒体(图片、语音、小视频)
void _sendMedia(int type, String mediaURL, {int mediaSecond = 0, String messageId = ""}) async {

  bool isNetwork = await CommonNetwork.isNetwork();
  if(!isNetwork) {
    return;
  }

  bool deleteContacts = await isDeleteContacts(widget.account, widget.toChatId);
  if(deleteContacts){
    return;
  }

  //上传文件
  ChatBean serverChatBean;
  String message = "";
  ChatSendBean chatSendBean = ChatSendBean();
  chatSendBean.contentType = type;
  chatSendBean.messageId = messageId;
  chatSendBean.addTime = WnDateUtils.getCurrentTime();
  if(type == CommonUtils.CHAT_CONTENT_TYPE_VOICE){
    //语音
    serverChatBean = await UploadUtils.getInstance().uploadChatVoice(widget.account, widget.toChatId, mediaURL);
    chatSendBean.content = serverChatBean.voice??"";
    chatSendBean.second = mediaSecond;
  } else {
    return ;
  }
  message = jsonEncode(chatSendBean);
  _sendMessage(message);
}

接收语音：

String serverVoicePath = CommonUtils.BASE_URL_UPLOAD + content;
String localVoicePath = await FileUtils.getBaseFile("${DateUtil.getNowDateMs()}.mp3");
//先下载语音
await DownloadUtils.getInstance().downloadFile(serverVoicePath, localVoicePath);
chatBean.voice = serverVoicePath;
chatBean.voiceLocal = localVoicePath;
chatBean.second = second;

//通知栏提示
NotificationUtils.getInstance().showNotification(chatBean);
//插入本地数据库
ChatRepository.getInstance().insertChat(chatBean);
//刷新页面
eventBus.emit(chatBean);