getLastMsg static method
IM 读取与对方聊天的最后一条消息
Implementation
static IMMessage? getLastMsg(String? pk) {
if (pk == null) {
return null;
}
String? s = _spf!.getString('im_$pk');
if (s == null) {
return null;
} else {
return IMMessage.fromJson(json.decode(s));
}
}