Key registration flow of a Ticker application

Published 2014-10-27 | (Compatible with SDK 2.5,3.5,4.5,5.0,5.1 and 2011,2012,2013,2014 models)

How to correctly register and unregister keys in a ticker application

If you are developing a ticker application, you should keep to the below key registration routine.

When the ticker application is hidden, all the keys registered by the user are unregistered automatically.

Please keep in mind the following:

  • If the application calls the registKey() function, it should be placed in the show event handler.

    The show event is called in two situations:

    • when the application is launched
    • when application is shown again after hiding
  • Keep track of whether IME is running or not. If it is displayed at the time of calling the hide event, the application should call registIMEKey() in the show event. Otherwise, the next time when application is shown, the IME module will not work properly.


The Ticker apps are allowed only for US and Korean market.

See also

How to register / unregister keys properly? for more information on registering and unregistering keys.