iOS 8 Bug - 当设备从睡眠状态返回时，OnUpdateReady永远不会再次调用 [英] iOS 8 Bug - OnUpdateReady never called again when device returns from sleep
问题描述
当运行Web应用程序的iOS 8设备（即从主屏幕上的快捷方式启动）从其睡眠状态返回时，所有异步Web请求都无法触发OnUpdateReady回调。
When an iOS 8 device running a Web Application (i.e. launched from a shortcut on the Home Screen) returns from it's Sleep state all asynchronous web requests made fail to trigger the OnUpdateReady callback.
问题很容易重现 - 只需将下面的两个代码文件放在任何网络服务器上并尝试一下。
The problem is quite easy to reproduce - simply put the two code files below on any web server and give it a try.
还有其他人遇到过这个问题？如果是这样有任何解决方法吗？
Has anyone else run into this issue? If so is there any workarounds?
我发布这个是为了吸引人们注意iOS 8中的这个基本上毁了我所有网络应用程序的错误 - 我们'我不得不建议不要升级到iOS 7之外。是的，我已经在Apple Bug Reporter上发布了这个问题，但我认为没有人会看到这些问题，因为它已经很长时间了。
I'm posting this to try to attract attention to this bug in iOS 8 that has essentially ruined all of my web applications - we've had to recommend to NOT upgrade beyond iOS 7. And yes, I've posted the problem on Apple Bug Reporter but I think no one is looking at these since it has been a long time.
app.manifest
app.manifest
CACHE MANIFEST
# 2014-09-24 - Test
CACHE:
default.html
default.html
default.html
<!DOCTYPE html>
<html manifest="app.manifest">
<head>
<title>Test Harness</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>
<meta name="HandheldFriendly" content="true" />
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black" />
<script language="javascript" type="text/javascript">
var Test = new function () {
var _GetEnd = function (oResult) {
var sResult = ': ' +
((oResult.Value === true)
? 'Success'
: 'Failure<br>' + oResult.Reason) +
'<br>';
var oLog = document.getElementById('idLog');
oLog.innerHTML = (new Date()) + sResult + oLog.innerHTML
setTimeout(_GetBegin, 1000);
};
var _GetBegin = function () {
var sURL = 'app.manifest';
var hAsyncCallback = _GetEnd;
try {
var oRequest = new XMLHttpRequest();
oRequest.onreadystatechange =
function () {
if (oRequest.readyState != 4) return;
if (oRequest.status != 200) {
hAsyncCallback({ Value: false, Reason: oRequest.responseText });
} else {
hAsyncCallback({ Value: true, Reason: null });
}
};
oRequest.open('GET', sURL, true);
oRequest.send(null);
} catch (e) {
alert('Critical Error: ' + e.message );
}
};
this.Start = function () { _GetBegin(); }
};
</script>
</head>
<body onload="Test.Start();">
<ol>
<li>Put both app.manifest and default.html on a web server.</li>
<li>Make sure this page is being launched from the Home screen as a web application.</li>
<li>Press the sleep button while it is running.</li>
<li>Press the wake button and unlock the phone to get back to this screen.</li>
<li>Under iOS7x the page continues, under iOS8 the onreadystatechange never gets called again.</li>
</ol>
<div id="idLog"></div>
</body>
</html>
推荐答案
安装iOS 8.1.1修复此问题。
Installing iOS 8.1.1 fixes this.
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