MagTek USB READER FOR ANDROID - Manual (Page 12)

8
Handler for Processing Messages From Reader:
private class MtHandlerCallback implements Callback {
public boolean handleMessage(Message msg) {
boolean ret = false ;
switch (msg. what ) {
case DEVICE_MESSAGE_CARDDATA_CHANGE :
mStringCardDataBuffer = (String)msg. obj ;
// Process card data
ret = true ;
break ;
case DEVICE_STATUS_CONNECTED :
if (((Number)msg. obj ).intValue() ==
DEVICE_STATUS_CONNECTED_SUCCESS ) {
// Reader connected successfully
}
else if (((Number)msg. obj ).intValue() == D
EVICE_STATUS_CONNECTED_FAIL ){
// Reader connection failed
} else if (((Number)msg. obj ).intValue() ==
DEVICE_STATUS_CONNECTED_PERMISSION_DENIED ){
// Reader connection permission denied
}
break ;
case DEVICE_STATUS_DISCONNECTED :
// Reader disconnected
break ;
default :
ret = false ;
break ;
}
return ret;
}
}