将按钮重置为计数并切换选项卡android studio

Question

I am making this beer/drink app as a fun project. I checked around the site and couldn't find anything specific to my problem. I would greatly appreciate help at two things;

I would like a button to reset whatever the count gets to in this code, I can't seem to figure out what I need..

The countButton is for beer and the drinkButton is for, well yeah, drinks.

public class Activity2 extends AppCompatActivity {

// Private member field to keep track of the count
private int mCount = 0;
private int mSum = 0;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_2);


    final TextView countTextView = (TextView) findViewById(R.id.TextViewCount);
    final TextView sumTextView = (TextView) findViewById(R.id.textSum);
    final ImageButton countButton = (ImageButton) findViewById(R.id.beerCount);
    final ImageButton drinkButton = (ImageButton) findViewById(R.id.drinkCount);


    countButton.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            mCount++;
            mSum += 72;
            countTextView.setText("You have been drinking " + mCount + " units!");
            sumTextView.setText("Sum:" + mSum + "!");
        }
    });

    drinkButton.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            mCount++;
            mSum += 96;
            countTextView.setText("You have been drinking " + mCount + " units!");
            sumTextView.setText("Sum:" + mSum + "!");
        }
    });

Also, the count does remove itself when I toggle through tabs in the app, any ideas to make it stay, and only removing by the reset button?

Greatly appreciate any help!

Answer 1

For what you require, simply add a third button to your activity and in its onCLickListener, set the values to 0.

Something like this.

resetButton.setOnClickListener(new View.OnClickListener() {

    public void onClick(View v) {
        this.mSum = 0;
    }
});