Android ถ้าต้องการจับเวลาเมื่อกดปุ่มหยุดเวลาแล้วให้รับค่าเวลามาเปรียบเทียบกับเงื่อนไขคะแนนที่ได้

package com.hearingtest.hearing;


        import android.media.MediaPlayer;
        import android.os.Bundle;
        import android.app.Activity;
        import android.view.Menu;
        import android.view.View;
        import android.view.Window;
        import android.view.WindowManager;
        import android.widget.Button;
        import android.os.Handler;
        import android.widget.TextView;


public class MyActivity extends Activity {


    MediaPlayer mMedia;
    MediaPlayer mMedia2;
    MediaPlayer mMedia3;
    private Handler mHandler = new Handler();




    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
                setContentView(R.layout.activity_my);


        if(mMedia != null){
            mMedia.reset();
            mMedia.release();
        }



        mMedia = MediaPlayer.create(this, R.raw.m);
        mMedia2 = MediaPlayer.create(this, R.raw.m2);
        mMedia3 = MediaPlayer.create(this, R.raw.m);


        final Button btn1 = (Button) findViewById(R.id.btnstarttest); // Start
        final Button btn2 = (Button) findViewById(R.id.button2); //respond




        // Start
        btn1.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                mMedia.start();
                btn1.setEnabled(false);
                mHandler.postDelayed(new Runnable() {
                    public void run() {
                        mMedia.stop();
                        mMedia2.start();
                        mHandler.postDelayed(new Runnable() {
                            public void run() {
                                mMedia2.stop();
                                mMedia3.start();
                            }
                        }, 5000);
                    }
                }, 5000);



            }


        });




    }





    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        if(mMedia != null){
            mMedia.release();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.my, menu);
        return true;
    }

}