Chronometer.OnChronometerTickListener()

Modify from the previous exercise "Android Chronometer", Chronometer.OnChronometerTickListener() is implemented. Chronometer.OnChronometerTickListener() is a callback that notifies when the chronometer has incremented on its own.



Inside Chronometer.OnChronometerTickListener(), the elapsed time in millisecons can be get from: SystemClock.elapsedRealtime() - myChronometer.getBase().

AndroidChronometer.java

package com.exercise.AndroidChronometer;

import android.app.Activity;
import android.os.Bundle;
import android.os.SystemClock;
import android.view.View;
import android.widget.Button;
import android.widget.Chronometer;
import android.widget.Toast;

public class AndroidChronometer extends Activity {
   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
      
       final Chronometer myChronometer = (Chronometer)findViewById(R.id.chronometer);
       Button buttonStart = (Button)findViewById(R.id.buttonstart);
       Button buttonStop = (Button)findViewById(R.id.buttonstop);
       Button buttonReset = (Button)findViewById(R.id.buttonreset);
      
       buttonStart.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    myChronometer.start();
   }});
      
       buttonStop.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    myChronometer.stop();
    
   }});
      
       buttonReset.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    myChronometer.setBase(SystemClock.elapsedRealtime());

   }});
      
       myChronometer.setOnChronometerTickListener(
         new Chronometer.OnChronometerTickListener(){

     @Override
     public void onChronometerTick(Chronometer chronometer) {
      // TODO Auto-generated method stub
      long myElapsedMillis = SystemClock.elapsedRealtime() - myChronometer.getBase();
      String strElapsedMillis = "Elapsed milliseconds: " + myElapsedMillis;
      Toast.makeText(AndroidChronometer.this, strElapsedMillis, Toast.LENGTH_SHORT).show();
     }}
       );
   }
}

Download the files.