Define a channel listener
The following code
sample assumes that you are creating this class as part of an application that
requires a channel listener.
-
Import the required classes and interfaces.
import net.rim.blackberry.api.bbm.platform.*;
import net.rim.device.api.ui.*;
import net.rim.device.api.ui.component.*;
-
Create the framework for the channel listener and define each
callback method's signature. The following code sample displays a message that
indicates what event has occured.
class MyChannelListener extends BBMPlatformChannelListener
{
public void invitationAccepted(BBMPlatformConnection connection, BBMPlatformContact contact)
{
Dialog.inform(contact.getDisplayName() + " has accepted your invitation.");
}
public void invitationDeclined(BBMPlatformConnection connection, String contactDisplayName)
{
Dialog.inform(contactDisplayName + " has declined your invitation.");
}
public void invitationFailed(BBMPlatformConnection connection, String inviteeName, int reasonCode)
{
Dialog.inform(inviteeName + " has failed to receive your invitation. Error: " + reasonCode);
}
public void contactLeft(BBMPlatformConnection connection, BBMPlatformContact contact)
{
Dialog.inform(contact.getDisplayName() + " has left the application.");
}
//NOTE: The message parameter is received as a data array. This method converts message to a String before displaying.
public void dataReceived(BBMPlatformConnection connection, BBMPlatformContact fromContact, BBMPlatformData message)
{
Dialog.inform(fromContact.getDisplayName() + ": " + new String(message.getData()));
}
//NOTE: param is a custom parameter defined by the application and passed in from the sender of the invitation
public void invitationReceived(BBMPlatformConnection connection, BBMPlatformContact contact, String param)
{
Dialog.inform(contact.getDisplayName() + ": " + param);
}
public void invitationsSent(BBMPlatformConnection connection, int count)
{
Dialog.inform("I've sent " + count + " invitations.");
}
public void joinFailed(BBMPlatformConnection connection, BBMPlatformContact inviter, int reasonCode)
{
Dialog.inform("The user has failed to join the session. Error: " + reasonCode);
}
}
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