我有一个倒数计时器，使用类 CountdownTimer。我将一个时间段从一个活动发送到我有计时器的那个活动。我还有一个进度条，我也使用倒数计时器计算其进度。它应该每秒倒计时，所以 1000 毫秒。
问题是它总是在某个时候跳过 1 秒。它是随机发生的，我试图找出问题所在。
这是我的代码的一部分：
private void startTimer()
{
millisInFuture = mTimeLeftInMillis;
mCountDownTimer = new CountDownTimer(mTimeLeftInMillis, intervaltime) {
@Override
public void onTick(long millisUntilFinished) {
mTimeLeftInMillis = Math.max(millisUntilFinished, millisUntilFinished - 1000);
updateCountDownText();
long millisPassed = millisInFuture - mTimeLeftInMillis;
Log.println(Log.VERBOSE,"CHECK","millisUntilFinished = "+millisUntilFinished);
Log.println(Log.VERBOSE,"CHECK","time in the future= "+millisInFuture);
Log.println(Log.VERBOSE,"CHECK","time left= "+mTimeLeftInMillis);
Log.println(Log.VERBOSE,"CHECK","Millispassed= "+millisPassed);
Log.println(Log.VERBOSE,"CHECK","Start Time = "+START_TIME_IN_MILLIS);
progress = (int) (millisPassed * 100 / millisInFuture);
pb.setProgress(progress);
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//Key: 60 sec
if (millisInFuture == 720000) {
if (millisPassed <= 60000 || millisPassed > 660000 && millisPassed <= 720000) {
Log.println(Log.ASSERT, "CHECK", "Check that the first if statement of key 60 is entered");
statusIfUp();
time_of_stage = ((millisInFuture - millisPassed) % 60000);
progress2 = (int) (time_of_stage * 100 / 60000);
Log.println(Log.VERBOSE, "CHECK", "TIME OF STAGE = " + time_of_stage);
Log.println(Log.VERBOSE, "CHECK", "progress2= " + progress2);
pb2.setProgress(progress2);
updateStageUpCount();
upArrowAnimation();
setflowrate();
} else if (millisPassed > 60000 && millisPassed <= 180000) {
Log.println(Log.ASSERT, "CHECK", "Check that the second if statement of key 60 is entered");
statusIfDown();
time_of_stage = ((millisInFuture + 60000) - millisPassed) % 120000; //CREDIT GOES TO BASHMOHNDES AMIN
progress3 = (int) (time_of_stage * 100 / 120000);
Log.println(Log.VERBOSE, "CHECK", "TIME OF STAGE = " + time_of_stage);
Log.println(Log.VERBOSE, "CHECK", "progress3= " + progress3);
pb3.setProgress(progress3);
updateStageDownCount();
downArrowAnimation();
setFlowratetozero();
} else if (millisPassed > 180000 && millisPassed <= 300000) {
Log.println(Log.ASSERT, "CHECK", "Check that the first if statement of key 60 is entered");
statusIfUp();
time_of_stage = ((millisInFuture + 60000) - millisPassed) % 120000;
progress2 = (int) (time_of_stage * 100 / 120000);
Log.println(Log.VERBOSE, "CHECK", "TIME OF STAGE = " + time_of_stage);
Log.println(Log.VERBOSE, "CHECK", "progress2= " + progress2);
pb2.setProgress(progress2);
updateStageUpCount();
upArrowAnimation();
setflowrate();
} else if (millisPassed > 300000 && millisPassed <= 360000 || millisPassed > 600000 && millisPassed <= 660000) {
Log.println(Log.ASSERT, "CHECK", "Check that the second if statement of key 60 is entered");
statusIfDown();
time_of_stage = (millisInFuture - millisPassed) % 60000; //CREDIT GOES TO BASHMOHNDES AMIN
progress3 = (int) (time_of_stage * 100 / 60000);
Log.println(Log.VERBOSE, "CHECK", "TIME OF STAGE = " + time_of_stage);
Log.println(Log.VERBOSE, "CHECK", "progress3= " + progress3);
pb3.setProgress(progress3);
updateStageDownCount();
downArrowAnimation();
setFlowratetozero();
} else if (millisPassed > 360000 && millisPassed <= 600000) {
Log.println(Log.ASSERT, "CHECK", "Check that the first if statement of key 60 is entered");
statusIfUp();
time_of_stage = ((millisInFuture + 120000) - millisPassed) % 240000;
progress2 = (int) (time_of_stage * 100 / 240000);
Log.println(Log.VERBOSE, "CHECK", "TIME OF STAGE = " + time_of_stage);
Log.println(Log.VERBOSE, "CHECK", "progress2= " + progress2);
pb2.setProgress(progress2);
updateStageUpCount();
upArrowAnimation();
setflowrate();
}
}
}
@Override
public void onFinish()
{
Toast.makeText(tool2mode4.this, "Done", Toast.LENGTH_SHORT).show();
avd2.stop(); avd3.stop();
try {
pb.setProgress(100); pb2.setProgress(0); pb3.setProgress(0);
stage_timer.setVisibility(View.INVISIBLE);
stage_timer.setVisibility(View.INVISIBLE);
progressBar.setVisibility(View.INVISIBLE);
progressBar2.setVisibility(View.INVISIBLE);
progressBar.setProgress(0);
progressBar2.setProgress(0);
progressBar.setTranslationY(60);
progressBar2.setTranslationY(60);
flow.setTranslationY(60);
animation1.cancel(); animation2.cancel();
//Vibration
if (Build.VERSION.SDK_INT >= 26) {
((Vibrator) getSystemService(VIBRATOR_SERVICE)).vibrate(VibrationEffect.createOneShot(1500, VibrationEffect.DEFAULT_AMPLITUDE));
} else {
((Vibrator) getSystemService(VIBRATOR_SERVICE)).vibrate(VibrationEffect.createWaveform(new long[]{1500}, new int[]{VibrationEffect.EFFECT_CLICK}, -1));
}
}
catch (NullPointerException e) {
e.printStackTrace();
}
}
}.start();
我的计时器有点大，因为它包含两个较小的计时器，它们在总时间中对个别分钟进行倒计时，并在这些时间内激活动画。
我发现 OnTick 方法中 millisUntilFinished 的值不等于倒计时开始的时间。意思是如果开始时间是 720000，那么millisUntilFinished 是 719971。
我不知道这意味着什么，但我的目标是让它每秒倒计时，而不会跳过一秒。知道我应该做什么吗？