Creating Methods in Separate Classes

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0

I was wondering if anyone had any idea how to create a method within a separate class, and have it be able to change int values in the main activity. If you look at this simple counter below, I want to be able to put the counter +=1 code etc in the onClicks, within a method in a separate class. Any help would be much appreciated.

public class MainActivity extends ActionBarActivity {

int counter = 0;
TextView counterDisplay;
Button plusOne, minusOne;



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

// Plus One Button

    plusOne = (Button) findViewById(R.id.btnPlus);
    counterDisplay = (TextView) findViewById(R.id.tv);


    plusOne.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            counter += 1;
            counterDisplay.setText("" + counter);
        }
    });

// Subtract One Button

    minusOne = (Button) findViewById(R.id.btnMinus);
    counterDisplay = (TextView) findViewById(R.id.tv);

    minusOne.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            counter -= 1;
            counterDisplay.setText("" + counter);
        }
    });

}

}

asked 1 min ago

zsInsane

14

Creating Methods in Separate Classes