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Android: ¿Cómo pausar y reanudar un temporizador de cuenta atrás? (6)
He desarrollado un temporizador de cuenta regresiva y no estoy seguro de cómo pausar y reanudar el temporizador mientras se hace clic en la vista de texto del temporizador. Haga clic para comenzar, luego haga clic nuevamente para pausar y reanudar, haga clic nuevamente en la vista de texto del temporizador.
Este es mi código:
Timer = (TextView) this.findViewById(R.id.time); //TIMER
Timer.setOnClickListener(TimerClickListener);
counter = new MyCount(600000, 1000);
}//end of create
private OnClickListener TimerClickListener = new OnClickListener() {
public void onClick(View v) {
updateTimeTask();
}
private void updateTimeTask() {
if (decision == 0) {
counter.start();
decision = 1;
} else if (decision == 2) {
counter.onResume1();
decision = 1;
} else {
counter.onPause1();
decision = 2;
}//end if
}
;
};
class MyCount extends CountDownTimer {
public MyCount(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}//MyCount
public void onResume1() {
onResume();
}
public void onPause1() {
onPause();
}
public void onFinish() {
Timer.setText("00:00");
p1++;
if (p1 <= 4) {
TextView PScore = (TextView) findViewById(R.id.pscore);
PScore.setText(p1 + "");
}//end if
}//finish
public void onTick(long millisUntilFinished) {
Integer milisec = new Integer(new Double(millisUntilFinished).intValue());
Integer cd_secs = milisec / 1000;
Integer minutes = (cd_secs % 3600) / 60;
Integer seconds = (cd_secs % 3600) % 60;
Timer.setText(String.format("%02d", minutes) + ":"
+ String.format("%02d", seconds));
///long timeLeft = millisUntilFinished / 1000;
/}//on tick
}//class MyCount
protected void onResume() {
super.onResume();
//handler.removeCallbacks(updateTimeTask);
//handler.postDelayed(updateTimeTask, 1000);
}//onResume
@Override
protected void onPause() {
super.onPause();
//do stuff
}//onPause
Bueno, no hay API para pausar o reanudar. Lo que debe hacer es cancel() el temporizador y almacenar el tiempo restante en una variable. Cuando se vuelva a pulsar el botón Reanudar, reinicie el temporizador con el valor de la variable.
Usted sabe que los Chronometers pueden ser de su interés.
Puedes intentar usar una biblioteca que creé, Hourglass
Hourglass hourglass = new Hourglass(50000, 1000) {
@Override
public void onTimerTick(long timeRemaining) {
// Update UI
Toast.show(MainActivity.this, String.valueOf(timeRemaining), Toast.LENGTH_SHORT).show();
}
@Override
public void onTimerFinish() {
// Timer finished
Toast.show(MainActivity.this, "Timer finished", Toast.LENGTH_SHORT).show();
}
};
Utilice hourglass.startTimer(); para iniciar el temporizador.
Tiene métodos de ayuda que permiten pausar y reanudar el temporizador.
hourglass.pauseTimer();
Y
hourglass.resumeTimer();
Tengo una solución simple. Todo lo que tienes que hacer es agregar una variable adicional que almacena la hora actual. La única adición es currentMillis en la parte superior y en onTick (). Utilice cancelar () para pausar.
PD: estoy usando la biblioteca de Butterknife, se usa para evitar el uso de findviewbyid y setonclicklisteners. Si no quiere usarlo, entonces puede usar la forma básica de configurar a los oyentes y findviewbyid.
@BindView(R.id.play_btn) ImageButton play;
@BindView(R.id.pause_btn) ImageButton pause;
@BindView(R.id.close_btn) ImageButton close;
@BindView(R.id.time) TextView time;
private CountDownTimer countDownTimer;
private long currentMillis=10;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game);
ButterKnife.bind(this);
}
@OnClick(R.id.play_btn) void play_game(){
this.play();
}
@OnClick(R.id.pause_btn) void pause_game(){
this.pause();
}
@OnClick(R.id.close_btn) void close_game(){
this.close();
}
void play(){
play.setVisibility(View.GONE);
close.setVisibility(View.GONE);
pause.setVisibility(View.VISIBLE);
time.setText(""+currentMillis);
countDownTimer = new CountDownTimer(currentMillis*1000,1000) {
@Override
public void onTick(long millisUntilFinish) {
currentMillis=millisUntilFinish/1000;
time.setText(""+millisUntilFinish/1000);
}
@Override
public void onFinish() {
time.setText("Done!");
}
};
countDownTimer.start();
}
void pause(){
play.setVisibility(View.VISIBLE);
close.setVisibility(View.VISIBLE);
pause.setVisibility(View.GONE);
countDownTimer.cancel();
}
void close(){
if(countDownTimer!=null){
countDownTimer.cancel();
countDownTimer=null;
}
Intent intent = new Intent(this,MainActivity.class);
startActivity(intent);
}
}
Una forma agradable y sencilla de crear una pausa / reanudar para su CountDownTimer es crear un método separado para el inicio , la pausa y la reanudación de su temporizador de la siguiente manera:
public void timerStart(long timeLengthMilli) {
timer = new CountDownTimer(timeLengthMilli, 1000) {
@Override
public void onTick(long milliTillFinish) {
milliLeft=milliTillFinish;
min = (milliTillFinish/(1000*60));
sec = ((milliTillFinish/1000)-min*60);
clock.setText(Long.toString(min)+":"+Long.toString(sec));
Log.i("Tick", "Tock");
}
}
timer.start();
El timerStart tiene un parámetro largo, ya que será reutilizado por el método resume () a continuación. Recuerde guardar su milliTillFinished (arriba como milliLeft) para que pueda enviarlo a través de su método resume () . Pausa y reanudar los métodos a continuación respectivamente:
public void timerPause() {
timer.cancel();
}
private void timerResume() {
Log.i("min", Long.toString(min));
Log.i("Sec", Long.toString(sec));
timerStart(milliLeft);
}
Aquí está el código para el botón FYI:
startPause.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(startPause.getText().equals("Start")){
Log.i("Started", startPause.getText().toString());
startPause.setText("Pause");
timerStart(15*1000);
} else if (startPause.getText().equals("Pause")){
Log.i("Paused", startPause.getText().toString());
startPause.setText("Resume");
timerPause();
} else if (startPause.getText().equals("Resume")){
startPause.setText("Pause");
timerResume();
}
/*
* Copyright (C) 2010 Andrew Gainer
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Adapted from Android''s CountDownTimer class
package com.cycleindex.multitimer;
import android.os.Handler;
import android.os.Message;
import android.os.SystemClock;
/**
* Schedule a countdown until a time in the future, with
* regular notifications on intervals along the way.
*
* The calls to {@link #onTick(long)} are synchronized to this object so that
* one call to {@link #onTick(long)} won''t ever occur before the previous
* callback is complete. This is only relevant when the implementation of
* {@link #onTick(long)} takes an amount of time to execute that is significant
* compared to the countdown interval.
*/
public abstract class CountDownTimerWithPause {
/**
* Millis since boot when alarm should stop.
*/
private long mStopTimeInFuture;
/**
* Real time remaining until timer completes
*/
private long mMillisInFuture;
/**
* Total time on timer at start
*/
private final long mTotalCountdown;
/**
* The interval in millis that the user receives callbacks
*/
private final long mCountdownInterval;
/**
* The time remaining on the timer when it was paused, if it is currently paused; 0 otherwise.
*/
private long mPauseTimeRemaining;
/**
* True if timer was started running, false if not.
*/
private boolean mRunAtStart;
/**
* @param millisInFuture The number of millis in the future from the call
* to {@link #start} until the countdown is done and {@link #onFinish()}
* is called
* @param countDownInterval The interval in millis at which to execute
* {@link #onTick(millisUntilFinished)} callbacks
* @param runAtStart True if timer should start running, false if not
*/
public CountDownTimerWithPause(long millisOnTimer, long countDownInterval, boolean runAtStart) {
mMillisInFuture = millisOnTimer;
mTotalCountdown = mMillisInFuture;
mCountdownInterval = countDownInterval;
mRunAtStart = runAtStart;
}
/**
* Cancel the countdown and clears all remaining messages
*/
public final void cancel() {
mHandler.removeMessages(MSG);
}
/**
* Create the timer object.
*/
public synchronized final CountDownTimerWithPause create() {
if (mMillisInFuture <= 0) {
onFinish();
} else {
mPauseTimeRemaining = mMillisInFuture;
}
if (mRunAtStart) {
resume();
}
return this;
}
/**
* Pauses the counter.
*/
public void pause () {
if (isRunning()) {
mPauseTimeRemaining = timeLeft();
cancel();
}
}
/**
* Resumes the counter.
*/
public void resume () {
if (isPaused()) {
mMillisInFuture = mPauseTimeRemaining;
mStopTimeInFuture = SystemClock.elapsedRealtime() + mMillisInFuture;
mHandler.sendMessage(mHandler.obtainMessage(MSG));
mPauseTimeRemaining = 0;
}
}
/**
* Tests whether the timer is paused.
* @return true if the timer is currently paused, false otherwise.
*/
public boolean isPaused () {
return (mPauseTimeRemaining > 0);
}
/**
* Tests whether the timer is running. (Performs logical negation on {@link #isPaused()})
* @return true if the timer is currently running, false otherwise.
*/
public boolean isRunning() {
return (! isPaused());
}
/**
* Returns the number of milliseconds remaining until the timer is finished
* @return number of milliseconds remaining until the timer is finished
*/
public long timeLeft() {
long millisUntilFinished;
if (isPaused()) {
millisUntilFinished = mPauseTimeRemaining;
} else {
millisUntilFinished = mStopTimeInFuture - SystemClock.elapsedRealtime();
if (millisUntilFinished < 0) millisUntilFinished = 0;
}
return millisUntilFinished;
}
/**
* Returns the number of milliseconds in total that the timer was set to run
* @return number of milliseconds timer was set to run
*/
public long totalCountdown() {
return mTotalCountdown;
}
/**
* Returns the number of milliseconds that have elapsed on the timer.
* @return the number of milliseconds that have elapsed on the timer.
*/
public long timePassed() {
return mTotalCountdown - timeLeft();
}
/**
* Returns true if the timer has been started, false otherwise.
* @return true if the timer has been started, false otherwise.
*/
public boolean hasBeenStarted() {
return (mPauseTimeRemaining <= mMillisInFuture);
}
/**
* Callback fired on regular interval
* @param millisUntilFinished The amount of time until finished
*/
public abstract void onTick(long millisUntilFinished);
/**
* Callback fired when the time is up.
*/
public abstract void onFinish();
private static final int MSG = 1;
// handles counting down
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
synchronized (CountDownTimerWithPause.this) {
long millisLeft = timeLeft();
if (millisLeft <= 0) {
cancel();
onFinish();
} else if (millisLeft < mCountdownInterval) {
// no tick, just delay until done
sendMessageDelayed(obtainMessage(MSG), millisLeft);
} else {
long lastTickStart = SystemClock.elapsedRealtime();
onTick(millisLeft);
// take into account user''s onTick taking time to execute
long delay = mCountdownInterval - (SystemClock.elapsedRealtime() - lastTickStart);
// special case: user''s onTick took more than mCountdownInterval to
// complete, skip to next interval
while (delay < 0) delay += mCountdownInterval;
sendMessageDelayed(obtainMessage(MSG), delay);
}
}
}
};
}
Fuente: Esta esencia.
public static void setTimerMillis(Context context, long millis)
{ SharedPreferences sp =
context.getSharedPreferences(SessionManager.FILE_USER, Context.MODE_PRIVATE);
SharedPreferences.Editor spe = sp.edit(); spe.putLong(SessionManager.TIMER_MILLIS, millis); spe.apply(); }
void setExamTimer() {
setTimerColors();
final long maxTimeToShow = 60000; //testing
final long lastTimeinMillisLeftSaved = TestyBookHelper.getTimerMillis(context); //take saved value from sharedpref
final long intervalTime = 1000;
donut_exam_timer.setMax((int) maxTimeToShow);
CountDownTimer countDownTimer = new CountDownTimer(lastTimeinMillisLeftSaved, intervalTime) {
@Override
public void onTick(long millis) {
TestyBookHelper.setTimerMillis(context, millis);
String hms = String.format("%02d:%02d:%02d", TimeUnit.MILLISECONDS.toHours(millis),
TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)),
TimeUnit.MILLISECONDS.toSeconds(millis) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis))); System.out.println(hms);
donut_exam_timer.setText(hms);
donut_exam_timer.setProgress(millis);
}
@Override
public void onFinish() {
}
};
countDownTimer.start();
}
public static long getTimerMillis(Context context) {
SharedPreferences sp = context.getSharedPreferences(SessionManager.FILE_USER, Context.MODE_PRIVATE);
return sp.getLong(SessionManager.TIMER_MILLIS, 60000L);}