关键呼叫Io例外：黑莓中的关键隧道故障问题

Question

在我的应用程序中我连接到网络时，它没有显示任何错误，但是当我在手机中安装应用程序时，它显示了关键的呼叫io异常：关键隧道故障。为什么会出现这种错误。请帮助我。

谢谢

Answer 1

按照链接可以解决您的问题：http：//www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800451/800563/What_Is_-_Different_ways_to_make_an_HTTP_or_socket_connection.html？nodeid = 826935＆amp; vernum = 0

您还可以使用以下示例代码：

private static String getConnectionString（）{     String connectionString =“”;     如果（WLANInfo.getWLANState（）== WLANInfo.WLAN_STATE_CONNECTED）{         的connectionString = “;接口= WiFi” 的;     }

 else if((CoverageInfo.getCoverageStatus() & CoverageInfo.COVERAGE_MDS) == CoverageInfo.COVERAGE_MDS){
     connectionString = ";deviceside=false";
}
    else if((CoverageInfo.getCoverageStatus() & CoverageInfo.COVERAGE_DIRECT)==CoverageInfo.COVERAGE_DIRECT){
        String carrierUid=getCarrierBIBSUid();
        if(carrierUid == null) {
            connectionString = ";deviceside=true";
        }
        else{
             connectionString = ";deviceside=false;connectionUID="+carrierUid + ";ConnectionType=mds-public";
            }               
        }
 else if(CoverageInfo.getCoverageStatus() == CoverageInfo.COVERAGE_NONE)
    {

    }
return connectionString;
}