I am implementing a countup timer and I follow an example from StackoverFlow.
In my version, I will press the Begin button to start counting and the Stop button to stop.
But the problem is that the counting start immediately after i enter the activity.
Any idea how to make it the way i want?
public class StartActivity extends Activity
{
Button beginRecordingButton;
TextView timer;
long startTime;
long countup;
#Override
protected void onCreate(Bundle savedInstanceState)
{super.onCreate(savedInstanceState);
setContentView(R.layout.startactivity);
beginRecordingButton = (Button) findViewById(R.id.BeginRecording);
timer = (TextView) findViewById(R.id.timer);
final Chronometer stopwatch = (Chronometer) findViewById(R.id.chrono);
startTime = SystemClock.elapsedRealtime();
stopwatch.setOnChronometerTickListener(listener);
beginRecordingButton.setOnClickListener(new OnClickListener()
{
int counter = 0;
public void onClick(View v)
{
if (counter % 2 == 0)
{
stopwatch.start();
beginRecordingButton.setText("Stop");
}
if (counter % 2 == 1)
{
stopwatch.stop();
beginRecordingButton.setText("Begin");
}
counter++; //counter is used for knowing it is stop or begin
}
});
}
private OnChronometerTickListener listener = new OnChronometerTickListener()
{
public void onChronometerTick(Chronometer chronometer)
{
String text;
countup = (SystemClock.elapsedRealtime() - chronometer.getBase())/1000;
if(countup%60<10)
{
text = (countup/60) + ":0" + (countup%60);
}
else
{
text = (countup/60) + ":" + (countup%60);
}
timer.setText(text);
}
};
}
I found the solution by doing follow:
long test;
test = (SystemClock.elapsedRealtime() - stopwatch.getBase())/1000;
Log.i(TAG, = (SystemClock.elapsedRealtime() - chronometer.getBase()) / 1000 - test;
basically String.valueOf(test));
stopwatch.start();
countup the idea is to subtract the passing time if i press the start button so it goes from 0
Related
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.
I want to use a stop watch in my app. So I try this tutorial but what I need are two changes and I can't really figure them out.
I found a bug that when I press start and then again it will start again. So what I want is a start button that will change into a pause button when pressed and visa versa. How can I switch the buttons?
My layout for the buttons is this:
<Button
android:id=”#+id/btnPause”
android:layout_width=”90dp”
android:layout_marginLeft=”20dp”
android:layout_height=”45dp”
android:layout_centerVertical=”true”
android:layout_toRightOf=”#+id/btnStart”
android:text=”Pause” />
<Button
android:id=”#+id/btnStart”
android:layout_width=”90dp”
android:layout_height=”45dp”
android:layout_alignParentLeft=”true”
android:layout_centerVertical=”true”
android:layout_marginLeft=”68dp”
android:text=”Start” />
The class is this:
package com.androidituts.stopwatch;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.SystemClock;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class StopwatchActivity extends Activity {
/** Called when the activity is first created. */
private TextView textTimer;
private Button startButton;
private Button pauseButton;
private long startTime = 0L;
private Handler myHandler = new Handler();
long timeInMillies = 0L;
long timeSwap = 0L;
long finalTime = 0L;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
textTimer = (TextView) findViewById(R.id.textTimer);
startButton = (Button) findViewById(R.id.btnStart);
startButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
startTime = SystemClock.uptimeMillis();
myHandler.postDelayed(updateTimerMethod, 0);
}
});
pauseButton = (Button) findViewById(R.id.btnPause);
pauseButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
timeSwap += timeInMillies;
myHandler.removeCallbacks(updateTimerMethod);
}
});
}
private Runnable updateTimerMethod = new Runnable() {
public void run() {
timeInMillies = SystemClock.uptimeMillis() – startTime;
finalTime = timeSwap + timeInMillies;
int seconds = (int) (finalTime / 1000);
int minutes = seconds / 60;
seconds = seconds % 60;
int milliseconds = (int) (finalTime % 1000);
textTimer.setText(“” + minutes + “:”
+ String.format(“%02d”, seconds) + “:”
+ String.format(“%03d”, milliseconds));
myHandler.postDelayed(this, 0);
}
};
}
i did the same thing with a button that toggled everytime you pressed it. here is how i did it
declare a int state = 1
the state means the functionality and the appearance of the button that would be. lets say 1 is start 2 is pause and 3 is stop(just for the tutorial purpose).
set the default state (in this case 1) and accordingly set the background
check the state everytime in the onclicklistener if the state is 1 implement the corresponding functionality, change the button background to pause and change the state to 2, and similarly for the rest of the others
Good Luck
you can change text of button yourself, or you should try Toggle Button
Make one of the buttons visible then just toggle the visibility from View.VISIBLE to View.GONE and do the opposite for the other button.
You can try this:
startButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
if(startButton.getText().equalsIgnoreCase("Start")) {
startTime = SystemClock.uptimeMillis();
myHandler.postDelayed(updateTimerMethod, 0);
}
else if(startButton.getText().equalsIgnoreCase("Pause")) {
timeSwap += timeInMillies;
myHandler.removeCallbacks(updateTimerMethod);
}
}
});
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
I'm developing an android app and I have a problem with the chronometer.
And when the onChronometerTick method gets called, on the 60th second the TextView should get updated, but it gets updated on the 58th second the first time. And if you pause and start the chronometer again it gets updated at a diferent time. I found that the onChronometerTick method gets called twice when I start the chronometer and that is where my problem comes from! Can someone help me?
Thanks!
Here is my code:
int br = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bProg = (Button) findViewById(R.id.bProgram);
bProg.setOnClickListener(this);
tv = (TextView) findViewById(R.id.textView1);
chrono = (Chronometer) findViewById(R.id.chronometer);
chrono.setBase(SystemClock.elapsedRealtime());
chrono.setOnChronometerTickListener(this);
chrono.stop();
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.bProgram:
Log.d(TAG, "bProgram Clicked");
checkButton();
// Change the electricity consumption for the given program
changeConsumption();
calculateSecondPrice();
tvCons.setText(String.valueOf(consumption * 1000 + " W"));
tvPrice.setText(String.valueOf(price + " lv."));
if (prog > 0) {
startChronometer();
}
if (prog == 0) {
pauseChronometer();
}
break;
}
}
private void pauseChronometer() {
timeWhenStopped = chrono.getBase() - SystemClock.elapsedRealtime();
chrono.stop();
}
private void startChronometer() {
if (prog == 1) {
chrono.setBase(SystemClock.elapsedRealtime() + timeWhenStopped);
chrono.start();
}
}
#Override
public void onChronometerTick(Chronometer chronometer) {
br++;
totalPrice += secondPrice;
if (br == 60) {
br = 0;
tv.setText(String.valueOf((double) (totalPrice) / 1000000));
}
}
}
OK I found a way to do it. This helped me: http://iqwen.net/question/53767
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.