blocks|key|386872|text|new+CountDownTimer(30000,+1000)+{

++++public+void+onTick(long+millisUntilFinished)+{
++++++++mTextField.setText("seconds+remaining:+"+%2B+millisUntilFinished+/+1000);
+++++++//here+you+can+have+your+logic+to+set+text+to+edittext
++++}

++++public+void+onFinish()+{
++++++++mTextField.setText("done!");
++++}

}.start();|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|386873|请参阅此link。|unstyled|offset|length|386874|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/reference/android/os/CountDownTimer.html^0|0|4|4|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@$G|S|H|T|1|U]]|A|$]]|$1|I|3|-4|5|F|7|V|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P]]]]

<pre><code>new CountDownTimer(30000, 1000) {

 public void onTick(long millisUntilFinished) {
 mTextField.setText("seconds remaining: " + millisUntilFinished / 1000);
 //here you can have your logic to set text to edittext
 }

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

}.start();
</code></pre>

Refer to this <a href="http://developer.android.com/reference/android/os/CountDownTimer.html" rel="noreferrer">link</a>.

blocks|key|386936|text|将CountDown计时器还原为小时、分钟和秒|type|unstyled|depth|inlineStyleRanges|entityRanges|data|386937|public+void+reverseTimer(int+Seconds,+final+TextView+tv)+{

++++new+CountDownTimer(Seconds+*+1000+%2B+1000,+1000)+{

++++++++public+void+onTick(long+millisUntilFinished)+{
++++++++++++int+seconds+=+(int)+(millisUntilFinished+/+1000);

++++++++++++int+hours+=+seconds+/+(60+*+60);
++++++++++++int+tempMint+=+(seconds+-+(hours+*+60+*+60));
++++++++++++int+minutes+=+tempMint+/+60;
++++++++++++seconds+=+tempMint+-+(minutes+*+60);

++++++++++++tv.setText("TIME+:+"+%2B+String.format("%2502d",+hours)
++++++++++++++++++++%2B+":"+%2B+String.format("%2502d",+minutes)
++++++++++++++++++++%2B+":"+%2B+String.format("%2502d",+seconds));
++++++++}

++++++++public+void+onFinish()+{
++++++++++++tv.setText("Completed");
++++++++}
++++}.start();
}|code-block|syntax|javascript|386938|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Revers CountDown timer with hours minutes and seconds

<pre><code>public void reverseTimer(int Seconds, final TextView tv) {

 new CountDownTimer(Seconds * 1000 + 1000, 1000) {

 public void onTick(long millisUntilFinished) {
 int seconds = (int) (millisUntilFinished / 1000);

 int hours = seconds / (60 * 60);
 int tempMint = (seconds - (hours * 60 * 60));
 int minutes = tempMint / 60;
 seconds = tempMint - (minutes * 60);

 tv.setText("TIME : " + String.format("%02d", hours)
 + ":" + String.format("%02d", minutes)
 + ":" + String.format("%02d", seconds));
 }

 public void onFinish() {
 tv.setText("Completed");
 }
 }.start();
}
</code></pre>

blocks|key|602901|text|尝试这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|602902|private+void+startTimer()+{
++++startTimer+=+new+CountDownTimer(30000,+1000)+{

++++++++public+void+onTick(long+millisUntilFinished)+{

++++++++++++long+sec+=+(TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished)+-
+TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished)));

++++++++++++Log.e(TAG,+"onTick:+"%2Bsec+);
++++++++++++tv_timer.setText(String.format("(+%2502d+SEC+)",+sec));
++++++++++++if(sec+==+1)
++++++++++++{

++++++++++++++++new+Handler().postDelayed(new+Runnable()+{
++++++++++++++++++++@Override
++++++++++++++++++++public+void+run()+{
++++++++++++++++++++++++tv_timer.setText("(+00+SEC+)");
++++++++++++++++++++}
++++++++++++++++},+1000);
++++++++++++}


++++++++}

++++++++public+void+onFinish()+{
++++++++++++tv_timer.setText("Timer+finish");
++++++++}
++++}.start();
}|code-block|syntax|javascript|602903|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this way:

<pre><code>private void startTimer() {
 startTimer = new CountDownTimer(30000, 1000) {

 public void onTick(long millisUntilFinished) {

 long sec = (TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
 TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished)));

 Log.e(TAG, "onTick: "+sec );
 tv_timer.setText(String.format("( %02d SEC )", sec));
 if(sec == 1)
 {

 new Handler().postDelayed(new Runnable() {
 @Override
 public void run() {
 tv_timer.setText("( 00 SEC )");
 }
 }, 1000);
 }


 }

 public void onFinish() {
 tv_timer.setText("Timer finish");
 }
 }.start();
}
</code></pre>

blocks|key|386977|text|使用Kotlin：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|386978|var+timer+=+object:+CountDownTimer(30000,+1000)+{
++++++++override+fun+onTick(millisUntilFinished:+Long)+{
++++++++++++tvTimer.setText("seconds+remaining:+"+%2B+millisUntilFinished+/+1000)
++++++++}

++++++++override+fun+onFinish()+{
++++++++++++tvTimer.setText("done!")
++++++++}
++++}
timer.start()|code-block|syntax|javascript|386979|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Using Kotlin:

<pre><code>var timer = object: CountDownTimer(30000, 1000) {
 override fun onTick(millisUntilFinished: Long) {
 tvTimer.setText("seconds remaining: " + millisUntilFinished / 1000)
 }

 override fun onFinish() {
 tvTimer.setText("done!")
 }
 }
timer.start()
</code></pre>

blocks|key|387135|text|接口方式。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|387136|import+android.os.CountDownTimer;

/**
+*+Created+by+saikiran+on+07-03-2016.
+*/
public+class+CountDownTimerCustom+extends+CountDownTimer+{

++++private+TimeTickListener+mTickListener;
++++private+TimeFinishListener+mFinishListener;
++++private+long+millisUntilFinished;

++++public+CountDownTimerCustom(long+millisInFuture,+long+countDownInterval)+{
++++++++super(millisInFuture,+countDownInterval);

++++}

++++public+void+updateTickAndFinishListener(TimeTickListener+tickListener)+{
++++++++mTickListener+=+tickListener;
++++}

++++public+void+updateFinishListner(TimeFinishListener+listener)+{
++++++++mFinishListener+=+listener;
++++}

++++public+long+getCurrentMs()+{
++++++++return+millisUntilFinished;
++++}

++++public+int+getCurrentSec()+{
++++++++return+(int)+millisUntilFinished+/+1000;
++++}

++++@Override
++++public+void+onTick(long+millisUntilFinished)+{
++++++++this.millisUntilFinished+=+millisUntilFinished;
++++++++if+(mTickListener+!=+null)
++++++++++++mTickListener.onTick(millisUntilFinished);
++++}

++++@Override
++++public+void+onFinish()+{
++++++++if+(mTickListener+!=+null)
++++++++++++mTickListener.onFinished();
++++++++mFinishListener.onFinished();
++++}


++++public+interface+TimeTickListener+{
++++++++void+onTick(long+mMillisUntilFinished);

++++++++void+onFinished();
++++}

++++public+interface+TimeFinishListener+{
++++++++void+onFinished();
++++}
}|code-block|syntax|javascript|387137|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The Interface way.

<pre><code>import android.os.CountDownTimer;

/**
 * Created by saikiran on 07-03-2016.
 */
public class CountDownTimerCustom extends CountDownTimer {

 private TimeTickListener mTickListener;
 private TimeFinishListener mFinishListener;
 private long millisUntilFinished;

 public CountDownTimerCustom(long millisInFuture, long countDownInterval) {
 super(millisInFuture, countDownInterval);

 }

 public void updateTickAndFinishListener(TimeTickListener tickListener) {
 mTickListener = tickListener;
 }

 public void updateFinishListner(TimeFinishListener listener) {
 mFinishListener = listener;
 }

 public long getCurrentMs() {
 return millisUntilFinished;
 }

 public int getCurrentSec() {
 return (int) millisUntilFinished / 1000;
 }

 @Override
 public void onTick(long millisUntilFinished) {
 this.millisUntilFinished = millisUntilFinished;
 if (mTickListener != null)
 mTickListener.onTick(millisUntilFinished);
 }

 @Override
 public void onFinish() {
 if (mTickListener != null)
 mTickListener.onFinished();
 mFinishListener.onFinished();
 }


 public interface TimeTickListener {
 void onTick(long mMillisUntilFinished);

 void onFinished();
 }

 public interface TimeFinishListener {
 void onFinished();
 }
}
</code></pre>

blocks|key|603173|text|下面是我在Kotlin中使用的解决方案|type|unstyled|depth|inlineStyleRanges|entityRanges|data|603174|private+fun+startTimer()
{
++++Log.d(TAG,+":startTimer:+timeString+=+'$timeString'")

++++object+:+CountDownTimer(TASK_SWITCH_TIMER,+250)
++++{
++++++++override+fun+onTick(millisUntilFinished:+Long)
++++++++{
++++++++++++val+secondsUntilFinished+:+Long+=+
++++++++++++Math.ceil(millisUntilFinished.toDouble()/1000).toLong()
++++++++++++val+timeString+=+"${TimeUnit.SECONDS.toMinutes(secondsUntilFinished)}:"+%2B
++++++++++++++++++++"%2502d".format(TimeUnit.SECONDS.toSeconds(secondsUntilFinished))
++++++++++++Log.d(TAG,+":startTimer::CountDownTimer:millisUntilFinished+=+$ttlseconds")
++++++++++++Log.d(TAG,+":startTimer::CountDownTimer:millisUntilFinished+=+$millisUntilFinished")
++++++++}

++++++++@SuppressLint("SetTextI18n")
++++++++override+fun+onFinish()
++++++++{
++++++++++++timerTxtVw.text+=+"0:00"
++++++++++++gameStartEndVisibility(true)
++++++++}
++++}.start()
}|code-block|syntax|javascript|603175|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here's the solution I used in Kotlin

<pre><code>private fun startTimer()
{
 Log.d(TAG, ":startTimer: timeString = '$timeString'")

 object : CountDownTimer(TASK_SWITCH_TIMER, 250)
 {
 override fun onTick(millisUntilFinished: Long)
 {
 val secondsUntilFinished : Long = 
 Math.ceil(millisUntilFinished.toDouble()/1000).toLong()
 val timeString = "${TimeUnit.SECONDS.toMinutes(secondsUntilFinished)}:" +
 "%02d".format(TimeUnit.SECONDS.toSeconds(secondsUntilFinished))
 Log.d(TAG, ":startTimer::CountDownTimer:millisUntilFinished = $ttlseconds")
 Log.d(TAG, ":startTimer::CountDownTimer:millisUntilFinished = $millisUntilFinished")
 }

 @SuppressLint("SetTextI18n")
 override fun onFinish()
 {
 timerTxtVw.text = "0:00"
 gameStartEndVisibility(true)
 }
 }.start()
}
</code></pre>

blocks|key|603205|text|public+class+Scan+extends+AppCompatActivity+{
int+minute;
long+min;
TextView+tv_timer;
@Override
protected+void+onCreate(Bundle+savedInstanceState)+{
++++super.onCreate(savedInstanceState);
++++setContentView(R.layout.activity_scan2);
++++tv_timer=findViewById(R.id.tv_timer);
++++minute=Integer.parseInt("Your+time+in+string+form+like+10");
++++min=+minute*60*1000;
++++counter(min);
}
private+void+counter(long+min)+{
++++CountDownTimer+timer+=+new+CountDownTimer(min,+1000)+{
++++++++public+void+onTick(long+millisUntilFinished)+{
++++++++++++int+seconds+=+(int)+(millisUntilFinished+/+1000)+%25+60;
++++++++++++int+minutes+=+(int)+((millisUntilFinished+/+(1000+*+60))+%25+60);
++++++++++++int+hours+=+(int)+((millisUntilFinished+/+(1000+*+60+*+60))+%25+24);
++++++++++++tv_timer.setText(String.format("%25d:%25d:%25d",+hours,+minutes,+seconds));
++++++++}
++++++++public+void+onFinish()+{
++++++++++++Toast.makeText(getApplicationContext(),+"Your+time+has+been+completed",
++++++++++++++++++++Toast.LENGTH_LONG).show();
++++++++}
++++};
++++timer.start();
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|603206|}|unstyled|603207|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>public class Scan extends AppCompatActivity {
int minute;
long min;
TextView tv_timer;
@Override
protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_scan2);
 tv_timer=findViewById(R.id.tv_timer);
 minute=Integer.parseInt("Your time in string form like 10");
 min= minute*60*1000;
 counter(min);
}
private void counter(long min) {
 CountDownTimer timer = new CountDownTimer(min, 1000) {
 public void onTick(long millisUntilFinished) {
 int seconds = (int) (millisUntilFinished / 1000) % 60;
 int minutes = (int) ((millisUntilFinished / (1000 * 60)) % 60);
 int hours = (int) ((millisUntilFinished / (1000 * 60 * 60)) % 24);
 tv_timer.setText(String.format("%d:%d:%d", hours, minutes, seconds));
 }
 public void onFinish() {
 Toast.makeText(getApplicationContext(), "Your time has been completed",
 Toast.LENGTH_LONG).show();
 }
 };
 timer.start();
}
</code></pre>

}

blocks|key|603233|text|++++var+futureMinDate+=+Date()
++++val+sdf+=+SimpleDateFormat("yyyy-MM-dd",+Locale.ENGLISH)
++++try+{
++++++++futureMinDate+=+sdf.parse("2019-08-22")
++++}+catch+(e:+ParseException)+{
++++++++e.printStackTrace()
++++}

++++//+Here+futureMinDate.time+Returns+the+number+of+milliseconds+since+January+1,+1970,+00:00:00+GM
++++//+So+we+need+to+subtract+the+millis+from+current+millis+to+get+actual+millis
++++object+:+CountDownTimer(futureMinDate.time+-+System.currentTimeMillis(),+1000)+{
++++++++override+fun+onTick(millisUntilFinished:+Long)+{
++++++++++++val+sec+=+(millisUntilFinished+/+1000)+%25+60
++++++++++++val+min+=+(millisUntilFinished+/+(1000+*+60))+%25+60
++++++++++++val+hr+=+(millisUntilFinished+/+(1000+*+60+*+60))+%25+24
++++++++++++val+day+=+((millisUntilFinished+/+(1000+*+60+*+60))+/+24).toInt()
++++++++++++val+formattedTimeStr+=+if+(day+>+1)+"$day+days+$hr+:+$min+:+$sec"
++++++++++++else+"$day+day+$hr+:+$min+:+$sec"
++++++++++++tvFlashDealCountDownTime.text+=+formattedTimeStr
++++++++}

++++++++override+fun+onFinish()+{
++++++++++++tvFlashDealCountDownTime.text+=+"Done!"
++++++++}
++++}.start()|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|603234|传递未来的日期并将其转换为毫秒。|unstyled|603235|它会像护身符一样起作用。|603236|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code> var futureMinDate = Date()
 val sdf = SimpleDateFormat("yyyy-MM-dd", Locale.ENGLISH)
 try {
 futureMinDate = sdf.parse("2019-08-22")
 } catch (e: ParseException) {
 e.printStackTrace()
 }

 // Here futureMinDate.time Returns the number of milliseconds since January 1, 1970, 00:00:00 GM
 // So we need to subtract the millis from current millis to get actual millis
 object : CountDownTimer(futureMinDate.time - System.currentTimeMillis(), 1000) {
 override fun onTick(millisUntilFinished: Long) {
 val sec = (millisUntilFinished / 1000) % 60
 val min = (millisUntilFinished / (1000 * 60)) % 60
 val hr = (millisUntilFinished / (1000 * 60 * 60)) % 24
 val day = ((millisUntilFinished / (1000 * 60 * 60)) / 24).toInt()
 val formattedTimeStr = if (day &gt; 1) "$day days $hr : $min : $sec"
 else "$day day $hr : $min : $sec"
 tvFlashDealCountDownTime.text = formattedTimeStr
 }

 override fun onFinish() {
 tvFlashDealCountDownTime.text = "Done!"
 }
 }.start()
</code></pre>

Pass a future date and convert it to millisecond. 

It will work like a charm.

blocks|key|603282|text|输出:+01:30|type|unstyled|depth|inlineStyleRanges|entityRanges|data|603283|new+CountDownTimer(90000,+1000)+{

++++++++++++public+void+onTick(long+duration)+{
++++++++++++++++//tTimer.setText("seconds+remaining:+"+%2B+millisUntilFinished+/+1000);
++++++++++++++++//here+you+can+have+your+logic+to+set+text+to+edittext+resource+id
++++++++++++++++//+Duration
++++++++++++++++long+Mmin+=+(duration+/+1000)+/+60;
++++++++++++++++long+Ssec+=+(duration+/+1000)+%25+60;
++++++++++++++++if+(Ssec+<+10)+{
++++++++++++++++++++tTimer.setText(""+%2B+Mmin+%2B+":0"+%2B+Ssec);
++++++++++++++++}+else+tTimer.setText(""+%2B+Mmin+%2B+":"+%2B+Ssec);
++++++++++++}

++++++++++++public+void+onFinish()+{
++++++++++++++++tTimer.setText("00:00");
++++++++++++}

++++++++}.start();|code-block|syntax|javascript|603284|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Output: 01:30
<pre><code>new CountDownTimer(90000, 1000) {

 public void onTick(long duration) {
 //tTimer.setText(&quot;seconds remaining: &quot; + millisUntilFinished / 1000);
 //here you can have your logic to set text to edittext resource id
 // Duration
 long Mmin = (duration / 1000) / 60;
 long Ssec = (duration / 1000) % 60;
 if (Ssec &lt; 10) {
 tTimer.setText(&quot;&quot; + Mmin + &quot;:0&quot; + Ssec);
 } else tTimer.setText(&quot;&quot; + Mmin + &quot;:&quot; + Ssec);
 }

 public void onFinish() {
 tTimer.setText(&quot;00:00&quot;);
 }

 }.start();
</code></pre>

blocks|key|603286|text|//+the+count+down+timer


+new++CountDownTimer(30000,+1000)
+++++++++{
++++++++@Override
++++++++public+void+onTick(long+l)+{

++++++++}
++++++++@Override
++++++++public+void+onFinish()+{
++++++++
++++++++++++++++//on+finish+the+count+down+timer+finsih++++++++
+++++++++++++++++++++++++}
++++++++++
++++++++++++}
++++++++}

++++}.start();|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|603287|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>// the count down timer


 new CountDownTimer(30000, 1000)
 {
 @Override
 public void onTick(long l) {

 }
 @Override
 public void onFinish() {
 
 //on finish the count down timer finsih 
 }
 
 }
 }

 }.start();
</code></pre>

I have two EditTexts in XML. In one EditText, the user can put a number as minutes and in another EditText, a number as seconds. After clicking the finish button, the seconds EditText should start to countdown and update its text every second. 

Additionally, how can I keep it updating until it gets to zero minutes and zero seconds?

How to make a countdown timer in Android?

Kotlin

我有两个XML格式的EditTexts。在一个EditText中，用户可以输入分钟表示的数字，而在另一个EditText中，用户可以输入秒表示的数字。单击finish按钮后，秒数EditText应开始倒计时并每秒更新其文本。此外，我如何保持更新，直到它达到0分零秒？

问如何在Android中设置倒计时计时器？
EN

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