Develop Reference

Delay For CountDown Timer - Android

I am making a chess clock but in it I need a delay (Like it waits 10 seconds before counting). I used a Handler for it but if the button is clicked in the 10 seconds, nothing happens. Please help! Thanks!
My code:
mHandler.postDelayed(new Runnable() {
public void run() {
// count down timer start
timer2 = new CountDownTimer(totalSeconds, Integer.parseInt(delay.getText().toString())) {
public void onTick(long millisUntilFinished) {
secondsTimer = (int) (millisUntilFinished / 1000) % 60;
minutesTimer = (int) ((millisUntilFinished / (1000 * 60)) % 60);
hoursTimer = (int) ((millisUntilFinished / (1000 * 60 * 60)) % 24);
person2.setText(hoursTimer + ":" + minutesTimer + ":" + secondsTimer);
}
public void onFinish() {
person2.setText("Time Up!");
person2.setBackgroundColor(Color.RED);
mp.start();
}
}.start();
}
}, finalDelay);
I want a delay but I don't want to lock the UI and make the app unresponsive as it is doing right now with the handler. Any help will be appreciated! Thanks in advance!

I think you shouldn't put CountdownTimer into Handler. You could create 2 handler instead. Here is an example.
private void startHandlerAndWait10Seconds(){
Handler handler1 = new Handler();
handler1.postDelayed(new Runnable() {
public void run() {
// Start Countdown timer after wait for 10 seconds
startCountDown();
}
}, 10000);
}
private void startCountDown {
final Handler handler2 = new Handler();
handler2.post(new Runnable() {
int seconds = 60;
public void run() {
seconds--;
mhello.setText("" + seconds);
if (seconds < 0) {
// DO SOMETHING WHEN TIMES UP
stopTimer = true;
}
if(stopTimer == false) {
handler2.postDelayed(this, 1000);
}
}
});
}

If you want to start the timer immediately,
findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
new Handler().post(new Runnable() {
public void run() {
// count down timer start
new CountDownTimer(100000, 1000) {
public void onTick(long millisUntilFinished) {
button.setText(String.valueOf(millisUntilFinished));
}
public void onFinish() {
button.setText("Time Up!");
}
}.start();
}
});
}
});
And if you want to execute it after a certain time period, then
findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
new Handler().postDelayed(new Runnable() {
public void run() {
// count down timer start
new CountDownTimer(100000, 1000) {
public void onTick(long millisUntilFinished) {
button.setText(String.valueOf(millisUntilFinished));
}
public void onFinish() {
button.setText("Time Up!");
}
}.start();
}
}, 1000);
}
});

You can avoid using Handler starting timer immediately
private fun start10SecondsDelayTimer() {
var delayCount = 10
val timer = object : CountDownTimer(1_000_000L, 1000L) {
override fun onTick(millisUntilFinished: Long) {
if (delayCount > 0) {
delayCount--
} else {
//your calculations
}
}
override fun onFinish() {
//some calculations
}
}
timer.start()
}
but first ticks will be without your calculations

Android for loop not counting properly

So I have 3 timers. For the first one I want only to appear once, because it's something like get ready timer.
For the second and third I want to appear as many times as user wants. Before timers start user must select number of times by pressing on + or - buttons which then set value of a TextView.
That's done with this code:
int counter = 0;
homeScreenPlus.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dodajInterval();
homeScreenMinus.setEnabled(counter > 0);
}
});
homeScreenMinus.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
oduzmiInterval();
homeScreenMinus.setEnabled(counter > 0);
}
});
}
private void oduzmiInterval() {
counter--;
brojIntervala.setText(Integer.toString(counter));
}
private void dodajInterval() {
counter++;
brojIntervala.setText(Integer.toString(counter));
}
And here's the code for timers:
public void homeScreenStart(View view) {
linearniLayoutSetup.setVisibility(View.GONE);
CountDownTimer firstCountDown = new CountDownTimer(seekBarTimerDelay.getProgress() * 1000 + 100, 1000) {
#Override
public void onTick(long millisUntilFinished) {
updateTimer((int) millisUntilFinished / 1000);
}
#Override
public void onFinish() {
textViewTimerVrijeme.setText("00:00");
countDownTimerTrci();
karticaTimera.setBackgroundColor(getResources().getColor(R.color.kartica_trci));
textViewTimerTrciHodajBlaBla.setText(getResources().getString(R.string.timer_trci));
}
}.start();
}
public void countDownTimerTrci() {
for (int i = 0; i < counter; i++) {
toolbar.setBackgroundColor(getResources().getColor(R.color.kartica_trci));
CountDownTimer secondCountDown = new CountDownTimer(seekBarIntervaliVisokogIntenziteta.getProgress() * 1000 + 100, 1000) {
#Override
public void onTick(long millisUntilFinished) {
updateTimer((int) millisUntilFinished / 1000);
}
#Override
public void onFinish() {
textViewTimerVrijeme.setText("00:00");
karticaTimera.setBackgroundColor(getResources().getColor(R.color.kartica_hodaj));
imageViewTimerSlika.setImageResource(R.drawable.ic_timer_niski_intenzitet);
textViewTimerTrciHodajBlaBla.setText(getResources().getString(R.string.timer_hodaj));
toolbar.setBackgroundColor(getResources().getColor(R.color.kartica_hodaj));
CountDownTimer thirdCountDown = new CountDownTimer(seekBarIntervaliNiskogIntenziteta.getProgress() * 1000 + 100, 1000) {
#Override
public void onTick(long millisUntilFinished) {
updateTimer((int) millisUntilFinished / 1000);
}
#Override
public void onFinish() {
textViewTimerVrijeme.setText("00:00");
countDownTimerTrci();
}
}.start();
}
}.start();
}
}
As you can see, it's a method which is called when button is pressed and I wan't first timer to appear only once and that's why I didn't include it in foor loop.
First timer shows only once and that works, but other two timers keep repeating until I close the app.
Can someone tell me where the problem is?

Try this ,replace your countDownTimerTrci method with mine
public void countDownTimerTrci() {
if(counter>0) {
toolbar.setBackgroundColor(getResources().getColor(R.color.kartica_trci));
CountDownTimer secondCountDown = new CountDownTimer(seekBarIntervaliVisokogIntenziteta.getProgress() * 1000 + 100, 1000) {
#Override
public void onTick(long millisUntilFinished) {
updateTimer((int) millisUntilFinished / 1000);
}
#Override
public void onFinish() {
textViewTimerVrijeme.setText("00:00");
karticaTimera.setBackgroundColor(getResources().getColor(R.color.kartica_hodaj));
imageViewTimerSlika.setImageResource(R.drawable.ic_timer_niski_intenzitet);
textViewTimerTrciHodajBlaBla.setText(getResources().getString(R.string.timer_hodaj));
toolbar.setBackgroundColor(getResources().getColor(R.color.kartica_hodaj));
CountDownTimer thirdCountDown = new CountDownTimer(seekBarIntervaliNiskogIntenziteta.getProgress() * 1000 + 100, 1000) {
#Override
public void onTick(long millisUntilFinished) {
updateTimer((int) millisUntilFinished / 1000);
}
#Override
public void onFinish() {
counter--;
textViewTimerVrijeme.setText("00:00");
countDownTimerTrci();
}
}.start();
}
}.start();
}
}

How to countDownTimer.cancel(); in OnTick(); function

Hi i am trying to cancel a countdown timer in On-tick function, It is working fine in lollipop but not working in Kitkat and below. How cancel it from a OnTick() function.
private void startTimer(final int minuti) {
countDownTimer = new CountDownTimer(60 * minuti * 1000 + sec * 1000,
500) {
#Override
public void onTick(long leftTimeInMilliseconds) {
CountDownTimer.cancel();
}
#Override
public void onFinish() {
}
}.start();
}

Somehow if you call countdowntimer.cancel of a CountDownTimer object in its own onTick method it won't work!
The simplest way to solve your problem is defining another CountDownTimer, same as the main one, in order to check the condition to call countdowntimer.cancel. The point is that you are calling objects cancel method from outside of its own onTick method.
Check the example below:
CountDownTimer countdowntimer;
CountDownTimer assist;
long millisuntillfinish = 10000;
int interval = 100;
countdowntimer = new CountDownTimer(millisuntillfinish, interval) {
#Override
public void onTick(long millisUntilFinished) {
// if(true) countdowntimer.cancel(); (doesnt work)
}
#Override
public void onFinish() {
}
};
assist = new CountDownTimer(timertillfinish, timerinterval) {
#Override
public void onTick(long millisUntilFinished) {
if (true) {
countdowntimer.cancel();
}
}
#Override
public void onFinish() {
assist.cancel();
}
};

I know this question is more than 6 years old, but calling super.cancel(); within onTick() did the trick for me.
Leaving this here for the next unfortunate soul looking for an answer to this question.
ie.
new CountDownTimer(5000, 1000) {
public void onTick(long millisUntilFinished) {
if(someCondition)
super.cancel();
}
public void onFinish() {
//do something else
}
}.start();

new CountDownTimer(time, 1000) {
public void onTick(long millisUntilFinished) {
if (((millisUntilFinished/1000)%5)==0){ //every 5 sec
if(true)
{
this.cancel();
}
}
}
public void onFinish() {
//do somethhing
}
}.start();

I have been looking around and I have found this post where they call to the cancel() method in the onTick() using an alternative to the Android countDownTimer.
I had also this problem, and I created a global variable of a countDownTimer and I called to the cancel method in the activity when I needed, like myCountDownTimer.cancel().
private CountDownTimer mCountDownTimer;
private CountDownTimer createTimer(){
return new CountDownTimer(30000, 1000) {
public void onTick(long millisUntilFinished) {
//do what you want
}
public void onFinish() {
//do what you want
}
}.start();
}
In your activity call:
mCountDownTimer = this.createTimer();
And if you want to cancel it:
mCountDownTimer.cancel();

How can i Reset my Timer value meanwhile completion of timer?

I am trying to start a timer when activity created and be able to reset the timer back from zero if the same button is pressed but every time I press the button that initiates the set Interval it seems to be creating a new interval and not resetting the one that was already creating. Can someone help please? Here is my code
timer = (TextView) findViewById(R.id.timer_value);
Count = new CountDownTimer(time, 1000) {
public void onTick(long millisUntilFinished) {
timer.setText("Time Left: " + millisUntilFinished / 1000);
}
public void onFinish() {
timer.setText("OUT OF TIME!");
if (time < 10000) {
time = 10000;
}
AlertDialog.Builder builder = new AlertDialog.Builder(
TicTacToe.this);
builder.setMessage("You are Out of Time").setPositiveButton(
"Replay", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// reset the game environment.
Count.onFinish();
// Count.cancel();
Count.start();
new_game(player_name_1);
}
});
AlertDialog alert = builder.create();
alert.show();
}
}.start();

you can use timers
//in global
Timer myTimer
/**
* its kills runnable
*/
public void stopTimer(){
//handler.removeCallbacks(null); //it resets all timer which handler holds
myTimer.cancel();
}
public void setTimer(int time){//give it 5 for 5 secs
final Runnable Update = new Runnable() {
public void run() {
//do sth
}
};
myTimer = new Timer();
myTimerTimer.schedule(new TimerTask() {
#Override
public void run() {
handler.post(Update);
}
}, 1000, time*1000);
}

If you want to restart your timer, remove Count.onFinish();
Update:
I replaced AlertDialog with a new thread and here is the code that works on my emulator
public class MainActivity extends Activity
{
int time = 10000;
CountDownTimer Count;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final TextView timer = (TextView) findViewById(R.id.timer);
Count = new CountDownTimer(time, 1000) {
public void onTick(long millisUntilFinished) {
timer.setText("Time Left: " + millisUntilFinished / 1000);
}
public void onFinish() {
timer.setText("OUT OF TIME!");
if (time < 10000) {
time = 100000;
}
}
}.start();
}
public void buttonClicked(View view)
{
Log.i("Timer", "Resetting timer");
Count.cancel();
Count.start();
}
}

How to display a timer in user interface for android

I am implementing an application in which i need to display a timer in the layout.The app continues like once the timer countdowns to 0sec then it should proceed to another app automatically whose path is defined.

you can do like this and in onFinish load the other app
private class MyCount extends CountDownTimer{
public MyCount(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
#Override
public void onTick(final long millisUntilFinished) {
long min = 0, sec = 0, totalSec = 0;
totalSec = (millisUntilFinished/1000);
min = totalSec/60;
sec = totalSec%60;
final long m = min;
final long s = sec;
runOnUiThread(new Runnable() {
public void run() {
System.out(" "+ m +"m and "+s+"s remaining.");
// or Display the way you want
}
});
}
#Override
public void onFinish() {
//load the task you want to do
}
}
can call it like this
MyCount counterr = new MyCount(sec *1000 , 1000);// sec = number of seconds
counterr.start();

I would have used CountDownTimer for this task. Use the onFinish method to call other activity.
new CountDownTimer(timetocomplete, ticks) {
#Override
public void onTick(long millisUntilFinished) {
}
#Override
public void onFinish() {
// Intent to start a new activity
}
}.start();