Blackberry WebWorks SMS侦听器异常

Question

Specs: WebWorks 2.2, Curve 9330 OS 6 Simulator and Device 规格：WebWorks 2.2，Curve 9330 OS 6模拟器和设备

We'll, I've tried just about everything and I can't figure this out. 我们会尝试几乎所有内容，但无法解决。 My application has a main page (index.html) and a background page (listener.html), as specified here: 我的应用程序有一个主页（index.html）和一个背景页（listener.html），如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<widget xmlns="http://www.w3.org/ns/widgets" 
   xmlns:rim="http://www.blackberry.com/ns/widgets" 
   version="1.0.0.0" rim:header="SimpleSMS">
   <name>SimpleSMS</name>
   <description>Simple SMS</description>
   <content src="index.html">
       <rim:background src="listener.html" runOnStartup="true" />
   </content>
   <rim:navigation mode="focus" />
   <access subdomains="false" uri="http://jsconsole.com"/>
   <feature id="blackberry.message.sms" />
   <feature id="blackberry.app" />
   <feature id="blackberry.io.dir" />
   <feature id="blackberry.io.file" />
   <feature id="blackberry.utils" />
</widget>

The listener.html looks like this: listener.html如下所示：

<!DOCTYPE html>
<html>
    <head>
    <script type="text/javascript" src="message_db2.js"></script>
    <script type="text/javascript">
    </script>
    </head>
    <body onload="initializeListener();">
    </body>
</html>

The initializeListener() function is as follows: initializeListener（）函数如下：

function initializeListener() {
    blackberry.message.sms.isListeningForMessage = true;
    blackberry.message.sms.addReceiveListener(messageListener);
}

The issue: When I install my app, and the listener starts running, my app can receive text messages without problems. 问题：当我安装应用程序并且侦听器开始运行时，我的应用程序可以毫无问题地接收短信。 As soon as I open the main application, the problems begin. 一旦打开主应用程序，问题就开始了。 If I just minimize the app to the background using the back or end button, the next sms received causes an exception. 如果仅使用“后退”或“结束”按钮将应用程序最小化至后台，则收到的下一个短信会引发异常。 If I close the app through the menu, there's no exception, but the listener ceases to function. 如果我通过菜单关闭应用程序，则没有例外，但监听器停止运行。 I have commented all code in messageListener and index.html does absolutely nothing but display some html. 我已经注释了messageListener中的所有代码，但index.html绝对不做任何事情，只显示一些html。 There is almost no documentation regarding having a background page. 几乎没有关于拥有背景页面的文档。 Does anyone have any ideas? 有人有什么想法吗？ Thanks in advance. 提前致谢。

Answer 1

Could it be that webworks is going to these different pages and discarding everything that's in the previous page? 可能是Webworks会转到这些不同的页面并丢弃上一页中的所有内容吗？ (Like what happens to a form you fill out when you go to a new page in your browser) （就像您在浏览器中转到新页面时填写的表格会发生什么一样）

Maybe you need to make use of Application Events to check when the app goes to the Foreground or Background; 也许您需要利用应用程序事件来检查应用程序何时进入前台或后台； Maybe double check isListeningForMessage? 也许仔细检查isListeningForMessage？

I'm thinking of something like 我在想类似的东西

function onFG()
{
  if (!blackberry.message.sms.isListeningForMessage)
  {
    blackberry.message.sms.isListeningForMessage = true;
    blackberry.message.sms.addReceiveListener(messageListener);
  }
}

blackberry.app.event.onForeground(onFG);

You can also make use of isForeground boolean if you need to have your code distinguish where it is running. 如果需要使代码区分运行位置，则也可以使用isForeground布尔值。

Blackberry WebWorks SMS侦听器异常

问题描述

1 个解决方案

解决方案1
0 2012-01-19 23:02:12

Blackberry WebWorks SMS侦听器异常

问题描述

1 个解决方案

解决方案1 0 2012-01-19 23:02:12

解决方案1
0 2012-01-19 23:02:12