Lua中的定时脚本/功能 [英] Timed script/function in Lua

问题描述

早上好朋友...我正在为移动应用程序使用Lua脚本语言，并且有如下要求-

good morning friends... I am working on with Lua scripting language for a mobile app and have a requirement as follows -

该应用程序的主要目的是为有医生的个人安排约会. 因此，一旦安排好用户的约会，例如5月8日下午4:30，用户应该在一个小时前(即下午3:30)收到提醒警报".

The application's main aim is to schedule appointments for an individual with a Doctor. So once a user's appointment is scheduled, for e.g. 8th May @ 4:30 PM, the user should receive a "reminder alert" before an hour i.e. @ 3:30 PM.

我对如何完成这项工作绝对一无所知. 我可以获取用户的日期时间值，并使用 函数 应该在该日期时间的60分钟之前调用的逻辑.该功能包含我的警报消息". 但是该怎么做呢?

am absolutely having a blank mind on how to get this done. I can get the user's date-time value and use the logic that a function should invoke just before 60 mins of that date-time. And that function contains my "Alert message". But how to do this?

有人可以给我一个线索吗?

Can anyone guide me with a clue?

请让我知道是否需要其他输入...

Please let me know if any other inputs are required...

谢谢.

推荐答案

我会采用这样的方法:

1.

将每个约会的详细信息存储为包含JSON或Lua表格数据的.txt文件，如下所示:

Store each appointment's details as a .txt file containing JSON or Lua tabular data something like this:

{
    date = "14:30 01/07/2013";
    dateBooked = "09:30 23/06/2013";
    venue = "31 Dentist Street";
    appointmentType = "Routine Teeth Cleaning";
}

2.

您可以像这样设置一个计时器类

You can have a timer class like so

Timer = {}
Timer_mt = { __index = Timer; __add = function(a,b) a:tickBy(b) end ; }

function Timer:new(delayTime,callBack)
    local timer = {callBack=callBack}

    timer.initTime = os.date() --MM/DD/YY HH:MM:SS

    --delayTime = HH:MM:SS
    _,_,hour,minute,second = string.find(delayTime,"(%d%d):(%d%d):(%d%d)")
    timer.delay = {hour=hour,minute=minute,second=second}

    --time the timer started
    _,_,hour,minute,second = string.find(timer.initTime,"(%d%d):(%d%d):(%d%d)")
    timer.startTime = {hour=hour,minute=minute,second=second}

    --time the timer started
    timer.initTime = os.date() --MM/DD/YY HH:MM:SS
    print(timer.initTime)
    _,_,hour,minute,second = string.find(timer.initTime,"(%d%d):(%d%d):(%d%d)")
    timer.currentTime = {hour=hour,minute=minute,second=second}
    return setmetatable(timer,Timer_mt)
end

function Timer:tick() --returns true if time expired
    currTime = os.date() --MM/DD/YY HH:MM:SS
    _,_,chour,cminute,csecond = string.find(currTime,"(%d%d):(%d%d):(%d%d)")
    if chour - self.startTime.hour >= tonumber(self.delay.hour) and cminute - self.startTime.minute >= tonumber(self.delay.minute) and csecond - self.startTime.second > tonumber(self.delay.second) then
        self:callBack()
        self.startTime.hour,self.startTime.minute, self.startTime.second = chour,cminute,csecond
        --return true
    end
    --return false
end

t = Timer:new("00:00:02",function () print("DONE") end)
print(t.currentTime.hour,t.currentTime.minute,t.currentTime.second)
while t:tick() or true do
    io.read()
end

(我刚刚整理好了，所以我建议您对其进行测试，但它似乎对我有用).

(I just made this up so I advice you test it but it seems to work for me).

3. 在启动时或添加新约会时，创建一个新计时器，然后在主执行过程中的某个时间点每个tick()，您甚至可以拥有一个计时器，它是您唯一的tick()计时器，它是回调的ticks()其他...无论如何设置每个计时器的回调以显示警报

3. On start-up, or when a new appointment is added create a new timer, and then tick() each one at some point during the main execution, you could even have a timer which is the only one you tick() and it's callback ticks() the others... Anyway set the callback for each timer to display an alarm

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