Need help in putting timer on simple quiz program

[DND]

So hey guys I'm currently making a simple quiz game for my OOP class, I'm almost done with the game the only thing I need to add is a countdown timer for each level of the game. The problem is that I don't know how will I add a timer because all of the tutorials that I find needs a trigger button wherein it will start the timer and pause the timer. The timer I need is when you actually play the game the timer will start initially. 

 

You can see the code here:

Code for the questions,timer,check if correct & wrong - https://pastebin.com/PByPeCq2

XML - https://pastebin.com/GC1EuSdx

Code for the main menu - https://pastebin.com/hgxQYuc3

XML - https://pastebin.com/PQradAh6

 

[Edwin Dimas]

I guess in the tutorials you where watching, theyve used the button to call a function...

Instead of that, you can simply call the timer from a method that runs when the object is created. (put whathever tutorials call from button inside the onCreate maybe or a constructor so it starts automatically)

 

Few recommendations you did not asked for  

-Since you are learning OOP, make a class called Timer or so.

-Define inside the class, public methods to control the timer

 So when you have

Timer counter = new Timer();

 You can do things like this

counter.start();

counter.stop();

counter.countBackwardsFrom("2:23:00");

 

Right now you have all your data hardcoded inside HUUGE arrays of strings

If you continue to work like that, you will find that, over time is harder and harder to maintain the application so please 

consider to move all your data to a database. Is not that complicated, and it makes your life easier as a programmer.

 

 

[DND]

17 minutes ago, Edwin Dimas said:

I guess in the tutorials you where watching, theyve used the button to call a function...

Instead of that, you can simply call the timer from a method that runs when the object is created. (put whathever tutorials call from button inside the onCreate maybe or a constructor so it starts automatically)

 

Few recommendations you did not asked for  

-Since you are learning OOP, make a class called Timer or so.

-Define inside the class, public methods to control the timer

 So when you have

Timer counter = new Timer();

 You can do things like this

counter.start();

counter.stop();

counter.countBackwardsFrom("2:23:00");

 

Right now you have all your data hardcoded inside HUUGE arrays of strings

If you continue to work like that, you will find that, over time is harder and harder to maintain the application so please 

consider to move all your data to a database. Is not that complicated, and it makes your life easier as a programmer.

 

 

Thanks for replying! To be honest in our OOP class our professor hasn't even really thought us anything useful that can be used in this project so I just looked on tutorials and most of the codes was copied from the tutorial.