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我有一个 BlackBerry 应用程序，它在 wi-fi 下运行得非常好。但我无法使用 GPRS 运行应用程序。请帮助我..谢谢..

boolean hasConnectivity_BIS = TransportInfo.isTransportTypeAvailable(TransportInfo.TRANSPORT_BIS_B)&&TransportInfo.hasSufficientCoverage(TransportInfo.TRANSPORT_BIS_B);
boolean hasConnectivity_MDS = TransportInfo.isTransportTypeAvailable(TransportInfo.TRANSPORT_MDS)&&TransportInfo.hasSufficientCoverage(TransportInfo.TRANSPORT_MDS);
boolean hasConnectivity_TCP_Cell = TransportInfo.isTransportTypeAvailable(TransportInfo.TRANSPORT_TCP_CELLULAR)&&TransportInfo.hasSufficientCoverage(TransportInfo.TRANSPORT_TCP_CELLULAR);
boolean hasConnectivity_TCP_wifi = TransportInfo.isTransportTypeAvailable(TransportInfo.TRANSPORT_TCP_WIFI)&&TransportInfo.hasSufficientCoverage(TransportInfo.TRANSPORT_TCP_WIFI);
boolean hasConnectivity_WAP = TransportInfo.isTransportTypeAvailable(TransportInfo.TRANSPORT_WAP)&&TransportInfo.hasSufficientCoverage(TransportInfo.TRANSPORT_WAP);
boolean hasConnectivity_WAP2 = TransportInfo.isTransportTypeAvailable(TransportInfo.TRANSPORT_WAP2)&&TransportInfo.hasSufficientCoverage(TransportInfo.TRANSPORT_WAP2);

if (hasConnectivity_BIS||hasConnectivity_MDS||hasConnectivity_TCP_Cell||hasConnectivity_TCP_wifi||hasConnectivity_WAP||hasConnectivity_WAP2)
{
    boolean hasconn=ButtonPay.checkConnection();
    System.out.println("Has Connection?????>>> "+hasconn);
    //my implementation    
}
else
{
    caller.showDialog("Response", "Internet connection not available");
}
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1 回答 1

1

您需要在 URL 之后附加您的连接类型。

public static String getConnectionString() {

    String connectionString = null;

    // Simulator behaviour is controlled by the USE_MDS_IN_SIMULATOR
    // variable.
    if (DeviceInfo.isSimulator()) {

        connectionString = ";deviceside=true";
    }

    // Wifi is the preferred transmission method
    else if (WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED) {

        connectionString = ";interface=wifi";
    }

    // Is the carrier network the only way to connect?
    else if ((CoverageInfo.getCoverageStatus() & CoverageInfo.COVERAGE_DIRECT) == CoverageInfo.COVERAGE_DIRECT) {

        String carrierUid = getCarrierBIBSUid();

        if (carrierUid == null) {
            // Has carrier coverage, but not BIBS. So use the carrier's TCP
            // network

            connectionString = ";deviceside=true";
        } else {
            // otherwise, use the Uid to construct a valid carrier BIBS
            // request

            connectionString = ";deviceside=false;connectionUID="+carrierUid + ";ConnectionType=mds-public";
        }
    }

    // Check for an MDS connection instead (BlackBerry Enterprise Server)
    else if ((CoverageInfo.getCoverageStatus() & CoverageInfo.COVERAGE_MDS) == CoverageInfo.COVERAGE_MDS) {

        connectionString = ";deviceside=false";
    }

    // If there is no connection available abort to avoid hassling the user
    // unnecssarily.
    else if (CoverageInfo.getCoverageStatus() == CoverageInfo.COVERAGE_NONE) {
        connectionString = "none";

    }

    // In theory, all bases are covered by now so this shouldn't be reachable.But hey, just in case ...
    else {

        connectionString = ";deviceside=true";
    }

    return connectionString;
}

/**
 * Looks through the phone's service book for a carrier provided BIBS
 * network
 * 
 * @return The uid used to connect to that network.
 */
private synchronized static String getCarrierBIBSUid() {
    ServiceRecord[] records = ServiceBook.getSB().getRecords();
    int currentRecord;

    for (currentRecord = 0; currentRecord < records.length; currentRecord++) {
        if (records[currentRecord].getCid().toLowerCase().equals("ippp")) {
            if (records[currentRecord].getName().toLowerCase()
                    .indexOf("bibs") >= 0) {
                return records[currentRecord].getUid();
            }
        }
    }

    return null;
}

一旦你写了这段代码。采用

con = (HttpConnection) Connector.open(url + getConnectionString());

它将确定可用的网络类型。

于 2012-09-07T09:14:31.007 回答