Do I need to add many methods, or is it possible to call one method

I have a tic tac toe app, and I want to know whether it is possible to set all the tic tac toe buttons to one on_click event, and then create a variable to get the ID of the button clicked, then pass it as a parameter to another method which will do the actual functionality, OR do I need to create different on_click events for each button?

Jon Skeet
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You can just use one listener - the onClick method takes a View parameter, which is the view that was clicked on. You can then find out which of your buttons that was:

View.OnClickListener sharedClickHandler = new View.OnClickListener() {
  public void onClick(View view) {
    int id = view.getId();
    // Do the right thing based on the ID
  }
}

Exactly how you do what you need to do based on the ID is up to you. For simple examples you could just use a switch/case statement; in other cases if you're mapping from ID to something else (a mutable object representing game state for example) you could use a Map<Integer, GameObject> and just get the right one...

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