How to display the timer in android

Question

I want to display the timer in TextView in the format of like [ 19:59].so when i click the start button ,the timer will display like this for example,i want to set upto 20 mintues,it will display like [19:58][19:87].can anyone give some ideas or example code? enter image description here

most of the example stars with starting time like 1,2,3 seconds uptp 60 seconds.i want reverse order — rajeshlawrance, Jul 05 '13 at 04:16
@rajeshlawrance check the docs http://developer.android.com/reference/android/os/CountDownTimer.html — Raghunandan, Jul 05 '13 at 04:27
@rajeshlawrance check my answer. but there is no pause for the timer. you need to cancel and restart. probably store the value when you cancel and provide the value when you restart. — Raghunandan, Jul 05 '13 at 04:42

score 25 · Answer 1 · answered Jul 05 '13 at 04:39

25

You can use the CountDownTimer.

http://developer.android.com/reference/android/os/CountDownTimer.html

     TextView _tv = (TextView) findViewById( R.id.textView1 );
    new CountDownTimer(20*60000, 1000) {

        public void onTick(long millisUntilFinished) {
            _tv.setText("seconds remaining: " +new SimpleDateFormat("mm:ss:SS").format(new Date( millisUntilFinished)));
        }

        public void onFinish() {
           _tv.setText("done!");
        }
     }.start();

To cancel just call cancel on the timer.

public final void cancel()

Cancel the countdown.

answered Jul 05 '13 at 04:39

Raghunandan

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Can this be used to make a count up timer? i.e. starting from 0 and goes to infinity – faizal Sep 24 '14 at 03:22
@RuchirBaronia the first argument takes a long which is milliseconds for testing i used that. You can change it to whatever you feel right – Raghunandan Dec 10 '15 at 04:59
So that is how much time the timer will go right? Why not just say: `1200000` instead? – Ruchir Baronia Dec 10 '15 at 05:00
@RuchirBaronia you can do that. – Raghunandan Dec 10 '15 at 05:00
Why is it `mm:ss:SS`? Thanks – Ruchir Baronia Dec 10 '15 at 05:31
Check the DateFormats in java. https://docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html – Raghunandan Dec 10 '15 at 10:48
So will this display something like so if I set it at 20 seconds? 20:59 -> 20:58 Every millisecond update? – Ruchir Baronia Dec 14 '15 at 02:36
@RuchirBaronia yes. timer task always run in background and with callbacks you update ui – Raghunandan Dec 14 '15 at 10:53
So will this display something like so if I set it at 20 seconds? 20:59 -> 20:58 Every millisecond update? – Ruchir Baronia Dec 14 '15 at 10:59
@RuchirBaronia try it yourself you will see the result – Raghunandan Dec 14 '15 at 11:09
Reason I'm asking is because whenever I use count down timer, it is inaccurate. It will go by 12 or 15 milliseconds off everytime. That is why I'm asking, is this accurate? – Ruchir Baronia Dec 14 '15 at 11:15

score 17 · Answer 2 · answered Jul 05 '13 at 10:14

package com.example.testproject;

import java.util.Timer;
import java.util.TimerTask;

import android.os.Bundle;
import android.widget.TextView;
import android.app.Activity;

public class MainActivity extends Activity {

    public int seconds = 60;
    public int minutes = 10;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //Declare the timer
        Timer t = new Timer();
        //Set the schedule function and rate
        t.scheduleAtFixedRate(new TimerTask() {

            @Override
            public void run() {
                runOnUiThread(new Runnable() {

                    @Override
                    public void run() {
                        TextView tv = (TextView) findViewById(R.id.main_timer_text);
                        tv.setText(String.valueOf(minutes)+":"+String.valueOf(seconds));
                        seconds -= 1;

                        if(seconds == 0)
                        {
                            tv.setText(String.valueOf(minutes)+":"+String.valueOf(seconds));

                            seconds=60;
                            minutes=minutes-1;

                        }



                    }

                });
            }

        }, 0, 1000);
    }

}

this is the code i tried and i got the answer with my own logic — rajeshlawrance, Jul 05 '13 at 10:16
little bit mistake: second -= 1 must be after if(seconds == 0){...}, else your timer's second will show 0 after 2 — Daryn, Nov 21 '13 at 04:25
Why you are initializing `TextView` every time in run method. — Pratik Butani, Mar 21 '18 at 10:12

Tarun Umath · Answer 3 · 2018-03-30T10:02:18.003

do it this way activity_timer.xml

<android.support.v7.widget.LinearLayoutCompat
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent">


        <Chronometer
            android:id="@+id/chronometer2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />


    </android.support.v7.widget.LinearLayoutCompat>

And in Activity

public class TimerActivity extends AppCompatActivity {
   private Chronometer chronometer2;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_timer);

        chronometer2 = findViewById(R.id.chronometer2);
        chronometer2.start();
    }
}

You can also use stop

chronometer2.stop();

Re Start

chronometer2.setBase(SystemClock.elapsedRealtime());
 chronometer2.start();

score 6 · Answer 4 · answered Jan 14 '15 at 11:26

  //start button click
     CountDown timer = new CountDown(180000, 1000);
     timer.start();

//stop button click
timer.stop();   

    //countdown class
    public class CountDown extends CountDownTimer {

          public CountDown(long millisInFuture, long countDownInterval) {
             super(millisInFuture, countDownInterval);
          }

          @Override
          public void onTick(long millisUntilFinished) {
             long ms = millisUntilFinished;
             String text = String.format("%02d\' %02d\"",
                                         TimeUnit.MILLISECONDS.toMinutes(ms) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(ms)),
                                         TimeUnit.MILLISECONDS.toSeconds(ms) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(ms)));
             textViewTimer.setText(text);
          }

          @Override
          public void onFinish() {
             textViewTimer.setText("ffinish");
          }
       }

score 1 · Answer 5 · edited Aug 17 '17 at 10:45

Here I have use Timer class to display timer

    public class FourthActivity extends AppCompatActivity {
    Button startButton, pauseButton;
    TextView timerValue;
    Timer timer;
    int seconds = 0, minutes = 0, hour = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_fourth);
        bindView();

        timer = new Timer();
        startButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                timer.scheduleAtFixedRate(new TimerTask() {
                    @Override
                    public void run() {
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                if (seconds == 60) {
                                    timerValue.setText(String.format("%02d", hour) + ":" + String.format("%02d", minutes) + ":" + String.format("%02d", seconds));
                                    minutes = seconds / 60;
                                    seconds = seconds % 60;
                                    hour = minutes / 60;
                                }
                                seconds += 1;
                                timerValue.setText(String.format("%02d", hour) + ":" + String.format("%02d", minutes) + ":" + String.format("%02d", seconds));
                            }
                        });
                    }
                }, 0, 1000);
            }
        });
    }

    private void bindView() {
        timerValue = (TextView) findViewById(R.id.timerValue);
        startButton = (Button) findViewById(R.id.startButton);
    }
}

In layout, there are one TextView and one Button to start timer. I have use Timer class method scheduleAtFixedRate. Time will be displayed in hh:mm:ss form.

not correct, minutes can not increase more than 1. you should ++ it in if statement, same problem for hours — Arash, Jul 25 '18 at 07:22

Raj Kanchan · Answer 6 · 2023-05-15T13:52:40.127

Showing timer in Kotlin.

class TimerDemo : AppCompatActivity() {

private lateinit var binding: ActivityTimerDemoBinding
private lateinit var timer: Timer
private var seconds = 0
private var secondsToDisplay = 0
private var minutes = 0
private var hours = 0

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    binding = ActivityTimerDemoBinding.inflate(layoutInflater)
    setContentView(binding.root)
    configureTimer()
}

private fun configureTimer() {
    timer = Timer().apply {
        scheduleAtFixedRate(object : TimerTask() {
            override fun run() {
                runOnUiThread {
                    if (seconds % 60 == 0) {
                        binding.tvTimerValue.text =
                            "${String.format("%02d", hours)} :" +
                                    " ${String.format("%02d", minutes)} :" +
                                    " ${String.format("%02d", secondsToDisplay)}"
                        minutes = seconds / 60
                        secondsToDisplay %= 60;
                        hours = minutes / 60
                    }
                    seconds++
                    secondsToDisplay++
                    binding.tvTimerValue.text =
                        "${String.format("%02d", hours)} :" +
                                " ${String.format("%02d", minutes)} :" +
                                " ${String.format("%02d", secondsToDisplay)}"
                }
            }
        }, 0, 1000)
    }
}

override fun onStart() {
    super.onStart()
    binding.btnStopTimer.setOnClickListener { timer.cancel() }
}

}

score 0 · Answer 7 · answered Jun 24 '17 at 18:41

This can be done using cronometer, the most main reason is supporting API 1+, which is quite impressive rather than TextClock, which supports API 17+.

You can do lots of other things with cronometer. for example you can set start time in it

chronometer.setBase(SystemClock.elapsedRealtime());

You can also learn about it more here.

Pramesh Bhalala · Answer 8 · 2019-10-14T14:23:09.970

0

I made code for timer display in textView.The formate is for e.g:- 02:59:00

You can follow this link to get the Step By Step Code.

https://stackoverflow.com/a/58316149/11613683

edited Oct 14 '19 at 14:23

answered Oct 10 '19 at 11:31

Pramesh Bhalala

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How to display the timer in android

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