How to display timer in android

Question

I want to display the timer in the TextView in the format [19:59] .so, when I click the start button, the timer will be displayed, for example, so I want to set up to 20 minutes, it will display as [19:58] [19 : 87]. Can anyone give some ideas or sample code?

Answer 1

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); } } 

Answer 2

You can use 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(); 

Cancel cancel the timer call.

public final void cancel()

Cancel the countdown.

Answer 3

  //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"); } } 

Answer 4

do it like this: 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 action

 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(); 

Run

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

Answer 5

Here I have a Timer class to display a 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); } } 

The layout has one TextView and one button to start the timer. I have a class method Timer scheduleAtFixedRate . The time will be displayed in the form hh: mm: ss.

Answer 6

This can be done using a cronometer , the most important reason is support for API 1+ , which is very impressive, not TextClock , which supports API 17+ .

You can do many other things with a chronometer. for example , you can set the start time in it

chronometer.setBase (SystemClock.elapsedRealtime ());

You can also learn more about this here.

Answer 7

I made code to display a timer in textView. Format for example: - 02:59:00

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

fooobar.com/questions/2384498 / ...