TSS000467
开发伙伴平台:
S60 2nd Edition, S60 2nd Edition FP1, FP2, and FP3
S60 3rd Edition, S60 3rd Edition FP1
详细描述
下列几种情况下,系统会弹出对话框提示用户选择一个接入点的,例如:
Code:
- Initiating an HTTP connection - Downloading a file with Download Manager API - Opening a URL in Browser Control API
重复使用当前的访问接入点是可以的。当你打开一个HTTP链接,然后又利用Download Manager API开始下载一个文件时就会看到这样的情况。重复使用可以防止接入点提示对话框出现两次。
解决方案
MConnectionMonitorObserver是一个监控类可以监控连接事件如生成或删除一个连接,或IAP变化事件等。客户端程序必须要完成它的接口,以便接收处理通知。
包括如下步骤:
1)从MConnectionMonitorObserver继承并完成EventL()回调方法:
Code:
class CMyHTTPEngine : public MConnectionMonitorObserver
{
...
public:
// from MConnectionObserver
void EventL(const CConMonEvenBase& aConnEvent);
...
private:
RConnectionMonitor iConnMon;
};
2)在允许用户使用一个HTTP连接前注册以获取事件通知:
Code:
TInt err = iConnMon.ConnectL(); iConnMon.NotifyEventL( *this ); // … proceed to open HTTP connection
3)处理接收到的事件,并检查活动IAP的ID值
Code:
CMyHTTPEngine::EventL(const CConMonEvenBase& aConnEvent) { TInt event = aConnEvent.EventType(); TUint connId = aConnEvent.ConnectionId(); TUint iapId; TRequestStatus status; switch ( event ) { case EConnMonCreateConnection: // New connection created { // Cast aConnEvent to CConnMonCreateConnection if needed iConnMon.GetUintAttribute(connId, 0, KIAPId, iapId, status); // Name of AP can be retrieved with // GetStringAttribute(connId, 0, KIAPName, ...) User::WaitForRequest( status ); break; } case EConnMonCreateSubConnection: // Subconnection to an existing AP { TUint subConnId; // Cast aConnEvent to CConnMonCreateSubConnection if needed const CConnMonCreateSubConnection subConnEvent =
(CConnMonCreateSubConnection)aConnEvent;
//这句话有错误,暂时还不知道怎么解决
// function call '[CConnMonCreateSubConnection].
// CConnMonCreateSubConnection({lval} const CConnMonEventBase)' does not match
subConnId = subConnEvent.SubConnectionId();
iConnMon.GetUintAttribute(connId, subConnId, KIAPId, iapId, status);
// Name of AP can be retrieved with
// GetStringAttribute(connId, subConnId, KIAPName, ...)
User::WaitForRequest( status );
break;
}
default:
break;
}
// Close the monitor when event notifications are no longer required
// iConnMon.Close();
}
我们可以用来监测接入点是否可以访问,以及是否被删除,还有其状态是否被改变等。
CConMonEvenBase是有错误的,应该是CConnMonEvenBase