在Android中倒计时计时器时间与实际时间之间的差异？
在Android中倒计时计时器时间与实际时间之间的差异？
提问于 2018-08-04 18:19:03
我的活动中有一个倒计时计时器。其中我已经将分钟转换为毫秒。
基于这一毫秒，我已经设法使用CountDownTimer来对抗HH: mm: ss。
因此，我想要主时间和剩余时间之间的差异。
例如，我的主时间是00:10:00，当我停止计数器时，假设我的剩余时间是00:07:30。意味着我花费了2:30秒
我想要的预期结果是150秒。
示例代码：
public class MainActivity extends AppCompatActivity {
int duration;
TextView textView;
ProgressBar progressbar;
Button btn_stop, btn_resume;
CountDownTimer counter;
int i = 1;
int remainingDuration;
int countDownInterval = 1000;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView = (TextView) findViewById(R.id.tvSampleText);
progressbar = (ProgressBar) findViewById(R.id.progressbar);
btn_stop = (Button) findViewById(R.id.btn_stop);
btn_resume = (Button) findViewById(R.id.btn_resume);
// duration=81200000; //6 hours
duration = (int) TimeUnit.MINUTES.toMillis(1);
counter = new MyCount(duration, countDownInterval);
counter.start();
btn_stop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
counter.cancel();
}
});
btn_resume.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
counter = new MyCount(remainingDuration, countDownInterval);
counter.start();
}
});
}
public class MyCount extends CountDownTimer {
public MyCount(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
@Override
public void onFinish() {
textView.setText("00:00:00");
}
@Override
public void onTick(long millisUntilFinished) {
i++;
long secondsInMilli = 1000;
long minutesInMilli = secondsInMilli * 60;
long hoursInMilli = minutesInMilli * 60;
long elapsedHours = millisUntilFinished / hoursInMilli;
millisUntilFinished = millisUntilFinished % hoursInMilli;
long elapsedMinutes = millisUntilFinished / minutesInMilli;
millisUntilFinished = millisUntilFinished % minutesInMilli;
long elapsedSeconds = millisUntilFinished / secondsInMilli;
String yy = String.format("%02d:%02d:%02d", elapsedHours, elapsedMinutes, elapsedSeconds);
textView.setText(yy);
progressbar.setProgress((int) i * 100 / (duration / (int) secondsInMilli));
remainingDuration = (int) millisUntilFinished;
}
}
}回答 1
Stack Overflow用户
回答已采纳
发布于 2018-08-04 18:29:04
首先将分钟持续时间转换为秒
long secs = minutes * 60; 10 * 60 = 600在tick中，您可以获得以毫秒为单位的剩余时间，因此保留该值作为全局引用，并将其转换为秒
long mMillisUntilFinished;
void onTick (long millisUntilFinished){
// mMillisUntilFinished = 450000
mMillisUntilFinished = millisUntilFinished;
}然后，当您按下停止，然后获得重命名时间差为
long diffSeconds = secs - (mMillisUntilFinished / 1000)
// 600 - (450000 /1000)
// 600 - 450
// 150 更新:按照建议，计算持续时间和剩余时间的秒数，然后减去它们得到结果。使用long而不是int转换
@Override
public void onTick(long millisUntilFinished) {
i++;
long secondsInMilli = 1000;
long minutesInMilli = secondsInMilli * 60;
long hoursInMilli = minutesInMilli * 60;
long tempMili = millisUntilFinished;
long elapsedHours = tempMili / hoursInMilli;
tempMili = tempMili % hoursInMilli;
long elapsedMinutes = tempMili / minutesInMilli;
tempMili = tempMili % minutesInMilli;
long elapsedSeconds = tempMili / secondsInMilli;
String yy = String.format("%02d:%02d:%02d", elapsedHours, elapsedMinutes, elapsedSeconds);
textView.setText(yy);
progressbar.setProgress((int) i * 100 / (duration / (int) secondsInMilli));
remainingDuration = (duration/ 1000) - (millisUntilFinished/1000);
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51684613
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