Increment2010.java

TextView mCounterText;
Button mCounterIncrementButton;

int mClicks = 0;

public void onCreate(Bundle b) {
  super.onCreate(b);

  mCounterText = (TextView) findViewById(R.id.tv_clicks);
  mCounterIncrementButton = (Button) findViewById(R.id.btn_increment);

  mCounterIncrementButton.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {
      mClicks++;
      mCounterText.setText(""+mClicks);
    }
  });
}