[C#] Using both touch to move & virtual joystick. A bit confused when to use what?

I'm currently trying to implement both touch to move (touching a point on the level, and the character will move to that point, assuming that it is a walkable area) and also have a virtual joystick on an android app.

The virtual joystick will not be visible. And when the user touches a part on the screen, if the user holds down his / her finger for a long time (maybe 0.3s) then I will render the virtual joystick that the user can use to move the character. And if the user quickly touches and removes his / her finger at a random location, this time the program will not render the virtual joystick but just move the character to that location.

Currently I am thinking off having a timer that gets the start time of when the user has first touched the screen. Then I will be doing a check to see whether the user has lifted their fingers in x seconds, if not, render the virtual joystick. If yes, then I'll just move the character to that location. Do you think this is a good approach? I'm new to input related stuff so I'm not really sure if this is the best way to do things.

 

Yes, this sounds perfectly reasonable.

 

Thank you steego!