我正在制作一个番茄计时器应用程序。我已经实现了播放和停止功能。现在我正在尝试实现暂停功能。当我按下暂停按钮时,它成功暂停了计时器,但是,当我再次按下播放按钮时,它从 25:00 重新开始,而不是从我停止的时间开始。我该如何实现这个方法?
代码如下:
package com.example.treeplanting;
import androidx.appcompat.app.AppCompatActivity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.view.View;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.TextView;
import java.util.concurrent.TimeUnit;
@SuppressWarnings("unused")
public class Pomodoro extends AppCompatActivity {
private TextView tvTimer, tvMotivationalQuote;
private ImageView ivStop, ivPause, ivPlay;
private SeekBar seekBar;
private CountDownTimer countDownTimer;
private boolean isRest = false;
private int userSelectedDuration = -1;
private final int ONE_SECOND_TICK = 1000;
private int counter = 0;
MediaPlayer mediaPlayer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pomodoro);
tvTimer = findViewById(R.id.tvTimer);
tvMotivationalQuote = findViewById(R.id.tvMotivationalQuote);
ivPlay = findViewById(R.id.ivPlay);
ivStop = findViewById(R.id.ivStop);
ivPause = findViewById(R.id.ivPause);
seekBar = findViewById(R.id.seekBar);
tvMotivationalQuote.setText(MethodsContainer.getMotivationalQuote());
// Setting up Seek Bar
seekBar.setMax(2500);
seekBar.setProgress(1500);
seekBar.setVisibility(View.GONE);
tvTimer.setText("25:00");
}
// On click methods
public void startTimer(View v){
ivPlay.setClickable(false);
isRest = false;
int duration = seekBar.getProgress();
userSelectedDuration = duration;
restartTimer(duration);
ivStop.setClickable(true);
}
public void stopTimer(View v){
ivPlay.setClickable(true);
seekBar.setProgress(1500);
tvTimer.setText("25:00");
ivStop.setClickable(false);
}
public void pauseTimer(View v){
if(countDownTimer != null) {
countDownTimer.cancel();
}
ivPlay.setClickable(true);
}
// Update methods
private void updateTimer(int progress){
int minutes = progress / 60;
int seconds = progress - minutes * 60;
String textMinutes = String.valueOf(minutes);
String textSeconds = String.valueOf(seconds);
if(seconds < 10) textSeconds = "0" + textSeconds;
if(minutes < 10) textMinutes = "0" + textMinutes;
tvTimer.setText(textMinutes + ":" + textSeconds);
}
private void restartTimer(int duration){
countDownTimer = new CountDownTimer(TimeUnit.SECONDS.toMillis(duration) + 100, ONE_SECOND_TICK) {
@Override
public void onTick(long millisUntilFinished) {
updateTimer((int) millisUntilFinished / 1000);
}
@Override
public void onFinish() {
breakTimer();
counter = counter + 1;
mediaPlayer = MediaPlayer.create(Pomodoro.this, R.raw.alarm);
mediaPlayer.start();
}
};
countDownTimer.start();
}
private void breakTimer(){
isRest = !isRest;
if(isRest){
seekBar.setProgress(300);
tvTimer.setText("5:00");
restartTimer(300);
} else{
restartTimer(userSelectedDuration);
}
}
}
****输出:25:00 -> 24:05(我按暂停按钮,它停止...) -> 我按播放按钮 -> 24:59 预期输出:25:00 -> 24:05(我按暂停按钮,它停止...) -> 我按播放按钮 -> 24:04** **
最佳答案
查看此内容以获取有关开发倒计时器应用程序的帮助:
https://github.com/harish124/Android_Data_Binding/tree/master/AlarmClock
关于java - 如何在android studio中停止计时器,然后从停止时重新开始?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/59991586/