activateEDKLicense(onSuccess, onError, key, customerID);
This method must be called every time the app starts after successful returning from the initCaptureID method call.
If the camera preview is displayed but no decoding occurs might indicate the license is invalid, expired or you missed to call the activateEDKLicense method.
The return value is always of type Result Struct.
The fields of the struct are filled dependend on the method call.
error: a value of 0 indicates that the call has succeeded.
boolValue: true = the license activation was successful.
the remaining values of the result struct are unused.