Develop Reference

Get variable from countdown and set it to TextView

I need your help to get a variable from the countdown and set that value to text view. Suppose if countdown stopped at 0:40 sec and I want to put that number to text view.
So I'm using Seekbar to update the time with progress and a textview. And suppose I stopped at a certain number, next time I start again, let the number start from when it stopped. I have uploaded the image of output. Thanks
I learned to create this app from udemy online tutorial. Its called Complete android developer course- Build 23 Apps!!. Its lesson 38- App Egg timer.
This is my MainActivity.java file
public class MainActivity extends AppCompatActivity {
TextView timerTv;
SeekBar timerSeekBar;
Button startBtn;
CountDownTimer countDownTimer;
boolean counterisActive = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
timerTv = (TextView) findViewById(R.id.countdowntimertextview);
timerSeekBar = (SeekBar) findViewById(R.id.timerSeekBar);
startBtn = (Button) findViewById(R.id.startBtn);
timerSeekBar.setMax(300);
timerSeekBar.setProgress(20);
timerSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
updateTimer(progress);
Log.i("Seekbar changes", String.valueOf(progress), null);
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
}
public void resetTimer(){
//This is where I want to set the text.
timerTv.setText("Trying to get text from countdown!!");
startBtn.setText("START!");
timerSeekBar.setEnabled(true);
countDownTimer.cancel();
timerSeekBar.setProgress(20);
counterisActive = false;
}
public void buttonClicked(View view){
if(counterisActive){
resetTimer();
}else {
counterisActive = true;
timerSeekBar.setEnabled(false);
startBtn.setText("STOP!");
Log.i("Button Clicked", "Clicked");
countDownTimer = new CountDownTimer(timerSeekBar.getProgress() * 1000 + 100, 1000) {
#Override
public void onTick(long millisUntilFinished) {
updateTimer((int) millisUntilFinished / 1000);
}
#Override
public void onFinish() {
MediaPlayer mediaPlayer = MediaPlayer.create(getApplicationContext(), R.raw.templebell);
mediaPlayer.start();
Log.i("Timer Finished", "Done!!");
resetTimer();
}
}.start();
}
}
public void updateTimer(int secondLefts){
int minutes = secondLefts / 60;
int seconds = secondLefts - (minutes * 60);
String secondString = Integer.toString(seconds);
if(seconds <= 9) {
secondString = "0" + seconds;
}
timerTv.setText(minutes + " : " + secondString );
}
}

I think you need to pause the timer.
First create a global long variable in your activity;
long timerProgress;
Change your restProgress() method like below, or you can add new method pauseTimer().
public void restTimer(){
//This is where I want to set the text.
updateTimer((int) timerProgress/1000);
startBtn.setText("START!");
timerSeekBar.setEnabled(true);
countDownTimer.cancel();
timerSeekBar.setProgress((int) timerProgress/1000);
counterisActive = false;
}
Know add this line to your override method onTick.
#Override
public void onTick(long millisUntilFinished) {
updateTimer((int) millisUntilFinished / 1000);
// add this line for store progress timer.
timerProgress = millisUntilFinished;
}
You can add another button one for pause and other for rest Timer.

Try replacing timerTv.setText(minutes + " : " + secondString ); with
runOnUiThread(new Runnable() {
#Override
public void run() {
timerTv.setText(minutes + " : " + secondString );
}
});
If you try to update the UI mid-thread, it will wait until the current thread has finished before updating the text.

Countdown timer set with a button

I wanted to program a timer that can be set up by clicking a button. For example button one sets a timer to 1 minute. Button 2 sets the timer to 2 minutes. the third button should start and stop the timer. I tried many code samples but it is not running. Has someone an idea how to solve this?
public void mittelBtn (View view){
EditText timerText = (EditText) findViewById(R.id.timerText);
timerText.setText("7:00");
countDownTimer =new CountDownTimer(420000, 1000) {
#Override
public void onTick(long millisUntilFinished) {
}
#Override
public void onFinish() {
}
}.start();
}
public void weichPlusBtn (View view){
EditText timerText = (EditText) findViewById(R.id.timerText);
timerText.setText("5:00");
countDownTimer =new CountDownTimer(300000, 1000) {
#Override
public void onTick(long millisUntilFinished) {
}
#Override
public void onFinish() {
}
}.start();

Because in onTick you should do something.
public void weichPlusBtn (View view){
EditText timerText = (EditText) findViewById(R.id.timerText);
timerText.setText("5:00");
//Set a couter variable
int counter = 5 * 60;
countDownTimer =new CountDownTimer(300000, 1000) {
#Override
public void onTick(long millisUntilFinished) {
counter--;
String newTime = secondsToString(counter);
timerText.setText(newTime);
}
#Override
public void onFinish() {
}
}.start();
private String secondsToString(int pTime) {
return String.format("%02d:%02d", pTime / 60, pTime % 60);
}
Hope this helps. Good luck.

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 pause and resume countdown timer?

I have a countdown timer in my game activity and I need it paused when I get incoming call or something that lose the focus from my activity. I tried like this but it does not work (the onPause method works, it stops the timer, but it wont resume it):
private long total = 180000;
MyCount brojacVremena = new MyCount(total, 1000);
public class MyCount extends CountDownTimer {
public MyCount(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
#Override
public void onFinish() {
#Override
public void onTick(long millisUntilFinished) {
total = millisUntilFinished;
vreme.setText("" + millisUntilFinished / 1000);
}
}
#Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
MyCount brojacVremena = new MyCount(total, 1000);
brojacVremena.start();
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
brojacVremena.cancel();
}
I tried even this in my onPause:
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
MyCount brojacVremenaNew = new MyCount(total, 1000);
brojacVremenaNew.cancel();
}

I do not think that you need to extend it, unless really necessary. I second what codeMagic said - store time time left in a variable in onPause() and DO NOT forget to save it in onSaveInstanceState() or to SharedPreference.
When your activity resumes, either due to config change or whatever, you can recreate your timer:
new CountDownTimer(millisUntilFinished, tickTime) {
public void onTick(long millisUntilFinished) {
millisUntilFinished -= tickTime;
// do you wanna know for whom the bell tolls?
}
public void onFinish() {
// it tolls for thee
millisUntilFinished = 0;
}
}.start();
In onPause(), cancel this timer and in onResume() create a new instance of the timer based on how much time is left :)
EDIT:
Something like this:
#Override
public void onResume(){
super.onResume();
millisUntilFinished = getMillisFromSharedPreference(KEY);
if(millisUntilFinished != 0){
new CountDownTimer(millisUntilFinished, tickTime) {
public void onTick(long millisUntilFinished) {
millisUntilFinished -= tickTime;
// do you wanna know for whom the bell tolls?
}
public void onFinish() {
// it tolls for thee
millisUntilFinished = 0;
}
}.start();
}
}
#Override
public void onPause(){
super.onPause();
saveMillisToSharedPreference(KEY,millisUntilFinished);
}

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();
}
}