Question

我正在开发一个Iphone应用程序，我需要在后台本身执行自动注销，即在按下Home按钮之后。

我已尝试使用以下代码进行会话超时，该代码适用于桌面。但是这个解决方案在Iphone的后台不起作用，因为我必须等待完整的10秒才能重定向到所需的页面。

<html>
<head>
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script src="http://code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<script>
$(document).ready(function(){
    var wintimeout;
    function SetWinTimeout() {
         wintimeout = window.setTimeout("window.location.href='try.html';",10000); //after 5 mins i.e. 5 * 60 * 1000
    }
    $('body').click(function() {
        window.clearTimeout(wintimeout); //when user clicks remove timeout and reset it
        SetWinTimeout();
    });
    SetWinTimeout();
});
</script>
</head>
<body>
<a href = "try.html"> try link </a>
Hey there.. is this working fine?
</body>
</html>

有人可以为此提供解决方案吗？

上述代码中的会话超时间隔也没有在Iphone上重置，因为即使我点击屏幕，我也被重定向到所需的页面。我该如何解决这个问题？

Answer 1

iPhone Sdk在后台进入后5秒后挂起所有任务。如果app支持多任务处理（如音频播放位置更新），它将支持后台任务。我可以为您提供一种解决方案，即节省您进入后台的时间，并节省您前景的时间。如果它计算的时间超过了注销的时间，那么点击你想要的服务。

Answer 2

也许是这样的？

<html>
<head>
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script src="http://code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<script>
$(document).ready(function(){
    document.lastActivity = new Date().getTime();
    document.threshold = 20000; // some value
    // and set an interval to keep an eye on last activity
    var interval = setInterval(/* something here */);
    $('body').on('click keydown', function() {
        document.lastActivity = new Date().getTime(); // keep resetting this
    });
}).on('focus', function () {
    var timeSince = new Date().getTime() - document.lastActivity;
    if (timeSince > document.threshold) {/* do stuff here */}
});
</script>
</head>
<body>
<a href = "try.html"> try link </a>
Hey there.. is this working fine?
</body>
</html>

想法是计算自上次活动以来经过的时间。当浏览器处于后台时，iOS设备暂停 JS，在我看来是有充分理由的。

Answer 3

这样的事情怎么样...... 注意：我有几个可以用其他任何东西切换出来的MVC Razor片段。我没有测试过这个，但这是一个好的开始。非Safari iOS浏览器将忽略pageshow / pagehide事件处理程序，因此这不是移动设备的完整解决方案。请随意改进，以获得更广泛的跨浏览器功能。此外，此解决方案还需要使用JQuery cookie插件：https://github.com/carhartl/jquery-cookie

/////////客户端代码

    //Safari iOS example that could be further developed to handle other mobile browsers
    var sessTimeCutOffInMs = 600000;   //600000 ms equals 10 minutes

    //Safari iOS event handler for resume tab and/or focus from sleep mode
    window.addEventListener("pageshow", function(e){            
        var timeIn = getTime();
        var timeOut = $.cookie('timeOut');
        if(timeOut != null) {
            //Let us compare
            compareTimes(timeIn,timeOut);
        }
    }, false);

    //Safari iOS event handler when creating new tab/app switching and/or putting into sleep mode
    window.addEventListener("pagehide", function(e){
        var timeOut = getTime();
        $.cookie('timeOut', timeOut, { path: '/' });

    }, false);  


    function getTime() {
        @{
        //MVC Razor syntax
         //formatted as milliseconds since 01.01.1970
         var _serverTime = DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1)).TotalMilliseconds.ToString("F0");
        }
        var serverTime = @_serverTime;
        return serverTime;
        //return (new Date()).getTime();            
    }   

    function compareTimes(timeIn,timeOut) {
        var diff = timeIn - timeOut;
        //If the mobile page was asleep for 10 minutes or more, force iOS user to logout
        //Especially useful for when forms auth is set to slidingExpiration=true
        if(diff >= sessTimeCutOffInMs) {
            //Redirect to logout routine
            //MVC Razor code shown below for redirecting to my Home Controller/Action
            simpleReset('@(Html.ResolveUrl("~/Home/SignOut"))');
        }
    }       

    function simpleReset(url) {
        window.location.href = url;
    }

///////////// MVC 4 HomeController.cs SignOut（）的代码片段动作

    [AllowAnonymous]
    public ActionResult SignOut()
    {            
        try
        {
            ViewBag.Message = "You are signed out.";

            //DELETE SSO Cookie 
            HttpCookie ssoCookie = new HttpCookie("SMSESSION", "NO");
            ssoCookie.Expires = DateTime.Now.AddYears(-1);                            
            ssoCookie.Domain = ".myDomain.com";      //IMPORTANT:  you must supply the domain here
            Response.Cookies.Add(ssoCookie);

            //Look for an existing authorization cookie and kill it
            HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName];
            authCookie.Value = null;
            authCookie = null;
            Response.Cookies.Remove(FormsAuthentication.FormsCookieName);

            // clear authentication cookie
            //Overriding the existing FormsAuthentication cookie with a new empty cookie ensures 
            //that even if the client winds back their system clock, they will still not be able 
            //to retrieve any user data from the cookie

            HttpCookie cookie1 = new HttpCookie(FormsAuthentication.FormsCookieName, "");
            cookie1.Path = FormsAuthentication.FormsCookiePath;
            cookie1.Expires = DateTime.Now.AddYears(-1);
            cookie1.HttpOnly = true;
            Response.Cookies.Add(cookie1);

            // clear session cookie
            HttpCookie cookie2 = new HttpCookie("ASP.NET_SessionId", "");
            cookie2.Expires = DateTime.Now.AddYears(-1);
            Response.Cookies.Add(cookie2);

            //Explicitly destroy roles object and session
            SimpleSessionHandler.myRoles = null;
            Session.Clear();
            Session.Abandon();

            // Invalidate the Cache on the Client Side
            Response.Cache.SetCacheability(HttpCacheability.NoCache);
            Response.Cache.SetNoStore();

            FormsAuthentication.SignOut();
        }
        catch (Exception ex) {
            //Swallow it
            Log.LogError("AUTH COOKIE ERROR: " + ex.Message, ex);
        }

        //The loginUrl on IWH is actually a LOGOUT page for the SSO cookie
        return Redirect(FormsAuthentication.LoginUrl);

    }

自动会话超时iphone

3 个答案: