Thursday, February 11, 2010

How to connect to Internet Using Blackberry

In the blackberry there are many standard connection methods.

  1. BES/MDS
  2. Direct TCP
  3. WiFi

But in these methods some times will not work on all the careers so their is a another undocumented method that you  can use.

package com.rdmcorp.itms.sdm.DataService;

import net.rim.device.api.servicebook.ServiceBook;
import net.rim.device.api.servicebook.ServiceRecord;
import net.rim.device.api.system.CoverageInfo;
import net.rim.device.api.system.DeviceInfo;
import net.rim.device.api.system.WLANInfo;

public class ConnectionCreator {

public static String getConnectionString() throws ServerException
{
String connectionString = null;

// Simulator behavior 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)
{
//logMessage("Device is connected via Wifi.");
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 bugging the user unnecssarily.
else if(CoverageInfo.getCoverageStatus() == CoverageInfo.COVERAGE_NONE)
{
ServerException exception = new ServerException(000,"No connection found");

throw exception;
}

// In theory, all bases are covered so this shouldn't be reachable.
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 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;
}
}

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