How to send loop index to another class?

I will send v开发者_如何转开发alue of loop index (variable i) to another class. I decided to use putExtra but to do this variable i have to be a "final".As you know that's impossible because this variable change value for each of the loop.

Here my code:

for (int i = 0; i<=20; i++) {
    btn[i].getBackground().setColorFilter(0xFF00FF00,PorterDuff.Mode.MULTIPLY);

    btn[i].setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {   
            Intent intent = new Intent(newgame.this, game.class);
            intent.putExtra(game.KEY_MISSION, i);
            startActivity(intent);
        }
     });
}

If you have any ideas or solutions I would be very grateful for your reply. (Sorry for my english)

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You can do this

for (int i = 0; i<=20; i++) {

       final int j = i;

         btn[i].getBackground().setColorFilter(0xFF00FF00,PorterDuff.Mode.MULTIPLY);

         btn[i].setOnClickListener(new OnClickListener() {
             @Override
                 public void onClick(View v) {  

                Intent intent = new Intent(newgame.this, game.class);
                intent.putExtra(game.KEY_MISSION, j);
                startActivity(intent);

                 }
             });

     }

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Create an inner class that takes 'i' as a parameter to the constructor. This is an example of when NOT to use an anonymous inner class, since you are creating multiple instances with different information.