When I try to start the activa by power start, a sound like trik trik is coming from the front cover. Upon opening the cover, the two black switches are making the sound. What is the problem? Or is the battery the problem?
I'd imagine it's the starter.
BUT, I would start by checking the battery. You can try jumping it from a same voltage battery, or take it to an Auto Parts store. Batteries are the most common cause of starting problems.
I'm guessing the clicking is the relays, which would indicate most of your electronics are good. Therefore, it's probably your starter not working. Again, most autoparts stores will test it for you, even with it still on the bike.