public void onClick(View v) {        

        if(v.getId() == R.id.button ) {

              stopService(new Intent(this,MusicService.class));

        finish();

        } else if(v.getId() == R.id.btnKakao){

            Log.i("btnKakao","clicked");

            KakaoLink kakaoLink = KakaoLink.getLink(getApplicationContext());

            

            if (!kakaoLink.isAvailableIntent()) {

                  alert("카카오톡이 설치되어 있지 않습니다.");

                  return;

            }

            

            try {

                kakaoLink.openKakaoLink(this, 

                        "마켓링크 주소", 

                        "설명내용", 

                        getPackageName(), 

                        getPackageManager().getPackageInfo(getPackageName(), 0).versionName, 

                        "타이틀", 

                        "UTF-8");

            } catch (NameNotFoundException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }            

            

        }

    }