Okay, so I have a countdown timer, and my app requires the user to tap a button numerous times, however the timer starts ON that button tap. My problem is:
I have a 10 second countdown timer that starts at the press of the button, but instead of just continuing down to 0, it restarts at 10 everytime the user taps the button. How do I make it so when the user taps it the first time, it keeps counting down?
My code:
private Button tapBtn;
TextView cm;
tapBtn = (Button) findViewById(R.id.Tap);
cm = (TextView) findViewById(R.id.Timer);
final CountDownTimer aCounter = new CountDownTimer(10000, 1000) {
public void onTick(long millisUntilFinished) {
cm.setText("Time Left: " + millisUntilFinished / 1000);
}
public void onFinish() {
cm.setText("Time's Up!");
}
};
aCounter.cancel();
tapBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
scr = scr - 1;
TextView Score = (TextView) findViewById(R.id.Score);
Score.setText(String.valueOf(scr));
aCounter.start();
}
});
}
Are you trying to make it so that if the user has already started the timer, subsequent button presses don't restart it from the first tap? If so, all you should have to do is put an if statement in your onclick that checks to see if the timer is still counting down, i.e. check and see if the current time is greater than 0 on the counter.
Edit: here's code
final CountDownTimer aCounter = new CountDownTimer(10000, 1000) {
private long timeLeft;
public long getTimeLeft() {
return timeLeft;
}
public void onTick(long millisUntilFinished) {
timeLeft = millisUntilFinished / 1000;
cm.setText("Time Left: " + timeLeft);
}
public void onFinish() {
cm.setText("Time's Up!");
}
};
aCounter.cancel();
tapBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if (aCounter.getTimeLeft() == 0) {
scr = scr - 1;
TextView Score = (TextView) findViewById(R.id.Score);
Score.setText(String.valueOf(scr));
aCounter.start();
}
}
});
}
one way to do it is to create a flag that gets set on the first tap and have the onclick event flip the flag on the first click, and put the timer start inside of an if statement that only occurs if the flag hasn't been set.
Related
I am using following code for using a button. I works.(sendBtn is a button in a fragment)
sendText = view.findViewById(R.id.send_text);
View sendBtn = view.findViewById(R.id.send_btn);
sendBtn.setOnClickListener(v -> send(sendText.getText().toString()));
Now i want to disable the button for 1 sec after a click
I found following solution but above code works "without onClick(View v)"method and without implementing View.OnClickListener in class. How to provide delay in such case..How code is working without onClick method.
#Override
public void onClick(View v) {
((Button) findViewById(R.id.click)).setEnabled(false);
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
((Button) findViewById(R.id.click))
.setEnabled(true);
}
}, 1000);
}
});
Use this method when you want to interrupt user clicks:
private static long mLastClickTime = 0L;
public static boolean isOpenRecently() {
if (SystemClock.elapsedRealtime() - mLastClickTime < 1000) {
return true;
}
mLastClickTime = SystemClock.elapsedRealtime();
return false;
}
Usage:
if (v.getId() == R.id.sendBtn) {
if (isOpenRecently()) return;
// Your logic
}
Basically you are using lambda in your code, where v->{} represents the onCLick(View v) function.
sendBtn.setOnClickListener(v -> send(sendText.getText().toString()));
You can do the following to disable the button for 1 second
void doOnSendButtonClick(View v){
//Send the message (your logic here)
send(sendText.getText().toString());
//Disable button
sendBtn.setEnabled(false);
//enable button after 1000 millisecond
new Handler(Looper.getMainLooper()).postDelayed(() -> {
sendBtn.setEnabled(true);
}, 1000);
}
And call this method when user clicks on the button
sendButton.setOnClickListener(view -> doOnSendButtonClick(view));
You could use a CountDownTimer.
CountDownTimewr timer = new CountDownTimer(1000, 1000) {
public void onTick(long millisUntilFinished) {
}
public void onFinish() {
// enable button
((Button) findViewById(R.id.click)).setEnabled(true);
}
}
#Override
public void onClick(View v) {
// disable btn and start timer of one second in millis
((Button) findViewById(R.id.click)).setEnabled(false);
timer.start();
}
});
Please try this way
Handler(Looper.getmainLooper()) and remove callback after you done your task inside runnable thread...also try to put this logic in any method outside in this class and call from setonclicklistener
Try the Timer.shedule with timertask
you can use runOnUIThread method inside where you can update UI.
you can also try to check the time difference of click and enable again in looping like while.
I'm new in Android programming but i know Java.
My question is, how does a timer work in Android? I've read that is better to use a handler.
What I want to do is, you click a button and the timer starts. To the moment when the button is clicked all is clear for me but how to start the timer?
How does a timer work in Android?
You better read Timer documentation, CountDownTimer Documentation and Handler Documentation.
To the moment, when the button is clicked, all is cleared for me; but, how can I start the timer?
If I didn't misunderstand your question, when you say Timer, you refer to CounteDownTimer. So, you should have something like this:
(I've written a sample code. So, you should understand it first, and then, you should apply it to your code.)
Adding the Buttons
btn1 = (Button)findViewById(R.id.bt1);
btn2 = (Button)findViewById(R.id.bt2);
Adding the SetOnClickListener()
btn1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
});
}
btn2.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
});
}
My btn1 starts the CountDownTimer, and the second one stops and clears it.
Now, I create an Inner Class with CountDownTimerTest name.
public class CountDownTimerTest extends CountDownTimer {
public CountDownTimerTest(long startTime, long interval) {
super(startTime, interval);
}
#Override
public void onFinish() {
text.setText("Time's up!");
timeElapsedView.setText("Time Elapsed: " + String.valueOf(startTime));
}
#Override
public void onTick(long millisUntilFinished) {
text.setText("Time remain:" + millisUntilFinished);
timeElapsed = startTime - millisUntilFinished;
timeElapsedView.setText("Time Elapsed: " + String.valueOf(timeElapsed));
}
}
Then on my btn1, I put this code (start the CountDownTimer):
countDownTimer.start();
And on my btn2, I put this code (stop/cancel the CountDownTimer):
countDownTimer.cancel();
Now, I hope that you can understand how CountDownTimer works, if your question isn't about CountDownTimer, let me know, and I'll update my answer as soon as possible with your wishes.
EDIT - Only with one Button
To do it with the same Button, you can do this:
Create a Boolean variable as:
Boolean ButtonClicked = false;
And then, modify the code as follows:
btn1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
if (!ButtonClicked)) {
ButtonClicked = true;
countDownTimer.start();
} else {
ButtonClicked = false;
countDownTimer.cancel();
}
});
}
EDIT 2 Get what button is clicked
You can create an int called NumberButtonClicked like this :
int NumberButtonClicked = 0;
Then on every Button you have you'll have to do this (Example) :
btn1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
NumberButtonClicked = 1;
});
}
Then you know that if you have clicked btn1 your variable will be 1.
I am trying to create a countdown timer that will increases its speed after a button press I uses the counter also to adjust a progress bar.
Right now I am adjusting the speed (increasing) after the button is pressed but it does not start from the beginning. For example, when I start my program the timer start from the beginning and decreases progressively, which is fine. However, when I press the button the counter does not start from the beginning like this:
I want just to make it run faster after each button press, not to decrease the length.
this is my code:
mTrueBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//is the user right? if pressing True button
if(isMathProblemTrue == 1){
//user is correct
Toast.makeText(MainActivity.this,"Correct!",Toast.LENGTH_SHORT).show();
generateMathProblem();
timer_length *= 0.8;
timer_interval *= 0.8;
Log.d(TAG,"time length:"+timer_length);
Log.d(TAG,"time interval:"+timer_interval);
mCountDownTimer.cancel();
createNStartTimer();
//restartTimer();
}else{
//user is incorrect
transferUserToStartScreen();
//reset the timer
mCountDownTimer.cancel(); // cancel
}
}
});
private void createNStartTimer() {
mCountDownTimer = new CountDownTimer(timer_length,timer_interval) {
#Override
public void onTick(long millisUntilFinished) {
Log.d(TAG,"Mil until finish:"+millisUntilFinished);
int progress = (int) (millisUntilFinished/100);
mProgressBar.setProgress(progress);
}
#Override
public void onFinish() {
mProgressBar.setProgress(0);
transferUserToStartScreen();
}
}.start();
}
create 2 global constants outside the functions
int totalMillisUntilFinished = 0;
bool firstTime = true;
we initialize the totalMillisUntilFinished when onTick is called for the time, so update your your onTick function:
private void createNStartTimer() {
firstTime = true;
mCountDownTimer = new CountDownTimer(timer_length,timer_interval) {
#Override
public void onTick(long millisUntilFinished) {
if(firstTime){totalMillisUntilFinished = millisUntilFinished; firstTime = false;}
Log.d(TAG,"Mil until finish:"+millisUntilFinished);
int progress = (int) (millisUntilFinished*100/totalMillisUntilFinished);
mProgressBar.setProgress(progress);
}
Personally, I use Handlers and Runnables, which I would definitely suggest looking into instead.
Im using a MediaPlayer to play a sound every time a second goes off this is my code:
// Define CountDown Timer Attributes//
waitTimer1 = new CountDownTimer(60000, 1000) {
#Override
public void onTick(long millisUntilFinished) {
long timeLeft = millisUntilFinished / 1000;
Timer.setText("" + String.format("%d min, %d sec",
TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished),
TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished))));
if (timeLeft >= 43) {
mp = MediaPlayer.create(getApplicationContext(), R.raw.beeb1);
mp.start();
}
}
Once the timer hits 43 seconds the MediaPlayer stops like its supposed to.
after I call the MediaPlayer release() like so:
(The Button is pressed every single time so I know it is getting released
case R.id.Team1:
Category.team_one++;
number1.setText(String.valueOf(Category.team_one));
t1.setEnabled(false);
t2.setEnabled(false);
next.setEnabled(true);
Timer.setText("1:00");
mp.release();
break;
The problem is after two times of playing the same sound, it just completely stops playing it. Not sure why. The MediaPlayer will only play the sound the first time the timer starts. The second time it will get to 45 seconds then stop working. The third time and so on it wont make a sound at all. Please help, Thanks!
here is all the code:
// Declare TextView Variable Number One//
protected TextView number1;
// Declare TextView Variable Number Two//
protected TextView number2;
// Declare TextView Variable Timer//
protected TextView Timer;
// Declare TextView Variable Word//
protected TextView word;
// Declare Button Variable Next//
protected Button next;
// Declare CountDown Timer Variable//
private CountDownTimer waitTimer1;
// Declare Button Variable Team One//
protected Button t1;
// Declare Button Variable Team Two//
protected Button t2;
// Declare Media_Player Variable MP//
MediaPlayer mp;
// Where List Starts//
int stringListCounter;
// Shuffle List//
#Override
public void onResume() {
super.onResume();
stringListCounter = randInt(0, 100);
}
// Shuffle List
private int randInt(int min, int max) {
Random rand = new Random();
int randomNum = rand.nextInt((max - min) + 1) + min;
return randomNum;
}
// What Happens When Activity Starts//
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_animals);
// Link Button Team One to Activity_Animals//
t1 = (Button) findViewById(R.id.Team1);
t1.setEnabled(false);
t1.setOnClickListener(this);
// Link Button Number One to Activity_Animals//
number1 = (TextView) findViewById(R.id.Number1);
number1.setText(String.valueOf(Category.team_one));
// Link Button Number Two to Activity_Animals//
number2 = (TextView) findViewById(R.id.Number2);
number2.setText(String.valueOf(Category.team_two));
// Link Button Team Two to Activity_Animals//
t2 = (Button) findViewById(R.id.Team2);
t2.setEnabled(false);
t2.setOnClickListener(this);
// Link TextView Timer to Activity_Animals//
Timer = (TextView) findViewById(R.id.Timer);
// Link Button Next to Activity_Animals//
next = (Button) findViewById(R.id.Next);
next.setOnClickListener(this);
// Link TextView Word to Activity_Animals//
word = (TextView) findViewById(R.id.Word);
}
// What Happens When Said Variable Is Clicked//
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.Next:
t1.setEnabled(false);
t2.setEnabled(false);
next.setText("next");
if (waitTimer1 == null) {
// Define CountDown Timer Attributes//
waitTimer1 = new CountDownTimer(60000, 1000) {
#Override
public void onTick(long millisUntilFinished) {
long timeLeft = millisUntilFinished / 1000;
Timer.setText("" + String.format("%d min, %d sec",
TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished),
TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished))));
if (timeLeft >= 43) {
mp = MediaPlayer.create(getApplicationContext(), R.raw.beeb1);
mp.start();
}
}
#Override
public void onFinish() {
t1.setEnabled(true);
next.setEnabled(false);
waitTimer1 = null;
Timer.setText("0:00");
next.setText("Start");
}
}.start();
// Repeat Words//
if (word.getText().toString().equals("Big Foot")) {
stringListCounter = 0;
}
// Change To Next Word//
stringListCounter++;
word.setText(stringIdList[stringListCounter]);
} else{
// Repeat Words//
if (word.getText().toString().equals("Big Foot")) {
stringListCounter = 0;
}
// Change To Next Word//
stringListCounter++;
word.setText(stringIdList[stringListCounter]);
}
break;
case R.id.Team1:
Category.team_one++;
number1.setText(String.valueOf(Category.team_one));
t1.setEnabled(false);
t2.setEnabled(false);
next.setEnabled(true);
Timer.setText("1:00");
mp.stop();
mp.reset();
mp.release();
break;
case R.id.Team2:
Category.team_two++;
number2.setText(String.valueOf(Category.team_two));
t1.setEnabled(false);
t2.setEnabled(false);
next.setEnabled(true);
Timer.setText("1:00");
mp.release();
mp = null;
break;
}
}
}
The problem is in this code:
#Override
public void onTick(long millisUntilFinished) {
long timeLeft = millisUntilFinished / 1000;
Timer.setText("" + String.format("%d min, %d sec",
TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished),
TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished))));
if (timeLeft >= 43) {
mp = MediaPlayer.create(getApplicationContext(), R.raw.beeb1);
mp.start();
}
}
Right now, on every "tick" (1000 ms) it is creating a new MediaPlayer and starting it until the countdown is less than 43, which means you are starting 17 MediaPlayers - and not releasing any of them except the last one. So you are probably causing memory issues with MediaPlayer
Since you are using a repeated sound, you should simply create your MediaPlayer in onCreate and on each tick reset/replay it. You don't need to re-create/release/etc.
Similar query: wait until all threads finish their work in java
Hello,
I'm developing android application that contains some kind of count down timer. My problem is, that I have multiple count down timers, that sets text of TextView and have to work separately (first count down timer has to wait until the second one is finished etc.)
See code:
MyCountDownTimer.java
public class MyCountdownTimer extends CountDownTimer {
TextView tv;
// default constructor
public MyCountdownTimer (long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
// constructor
public MyCountdownTimer(int hours, int mins, int secs,
long countDownInterval, TextView tv) {
super(3600000 * hours + 60000 * mins + secs * 1000, countDownInterval);
this.tv = tv;
// all other settings
}
// when finished, set text of textview to done
#Override
public void onFinish() {
tv.setText("done!");
}
// when working periodically update text of text view to value of time left
#Override
public void onTick(long millisUntilFinished) {
tv.setText(/*function setting text of TextView based on time left*/);
}
}
Timer.java
public class Timer extends Fragment {
Button bStart;
Button bStop;
TextView tvShowTime;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.timer, container, false);
}
public void onStart() {
super.onStart();
bStart = (Button) getView().findViewById(R.id.bTimerStart);
bStop = (Button) getView().findViewById(R.id.bTimerStop);
tvShowTime = (TextView) getView().findViewById(R.id.showTime);
// setting on button start click
bStart.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
timerStart();
}
});
// setting on button stop click
bStop.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
timerStop();
}
});
}
private void timerStart() {
bStart.setClickable(false);
int repeat = 2;
int hour, mins, secs;
for (int i = 0; i < 2 * repeat; i++) {
if (i % 2 == 0) {
// setting working count down timer values
mins = 1;
} else {
// setting resting count down timer values
secs = 30;
}
timerCount = new MyCountdownTimer(hours, mins, secs, REFRESH_RATE,
tvShowTime);
timerCount.start();
//////////////////////////////////////////////////
// HERE I WANT TO WAIT UNTIL COUNTDOWN IS DONE //
// ATM SECOND, THIRD AND FOURTH COUNT DOWN //
// TIMER IS STARTED //
//////////////////////////////////////////////////
}
}
-- EDIT --
At the end I did 2 CountDownTimers where first one calls in onFinish() second one and second one calls the first one until repeat = 0;
In final it was the best sotution for me. Anyway thanks for help, #Triode's answer helped me a lot
Start your SECOND, THIRD AND FOURTH COUNT DOWN TIMER in onFinish() of Your MyCountdownTimer
I think you have to put down the timerStop() method implementation and do not try to hide it,you need answer but you don't want others to benifit :s