볼륨키 업.다운 클릭시 이벤트 발생

Question

 

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button button = (Button) findViewById(R.id.button);

final TextView countText = (TextView) findViewById(R.id.count_text);

button.setOnTouchListener(new OnTouchListener() {

 

@Override

public boolean onTouch(View v, MotionEvent event) {

int action = event.getAction();

 

if (event.getAction() == MotionEvent.ACTION_DOWN)  {

onHandler1();

 

}

if (event.getAction() == MotionEvent.ACTION_UP) {

mHandler.removeCallbacks(r);

}

return true;

}

});

}

 

int count = 0;

private Handler mHandler;

private Runnable r;                           

private void onHandler1() {

mHandler = new Handler();

r = new Runnable() {

@Override

public void run() {

count++;

((TextView) findViewById(R.id.count_text)).setText(String

.valueOf(count));

mHandler.postDelayed(r, 1000);

}

};

mHandler.postDelayed(r, 1000);

}

}

 

이건 버튼 클릭시 1초에 숫자 1씩증가 하도록 만든것입니다.

볼륨 업 혹은 다운을 클릭시  초마다 증가 하게 하고싶은데

어떠한 방법이 있을까요 ??

Answer 1

@Override

    public boolean dispatchKeyEvent(KeyEvent event) 

    {

        if (event.getAction() == KeyEvent.ACTION_DOWN)

        {

            switch (event.getKeyCode()) 

            {

                case KeyEvent.KEYCODE_VOLUME_UP:

                onHandler1();

               

                    return true;

                case KeyEvent.KEYCODE_VOLUME_DOWN:

                mHandler.removeCallbacks(r);

               

                    return true;

            }

        }

 

        return super.dispatchKeyEvent(event);

    }