我的进度条与我的倒数计时器不同步

Question

我在这里制作了启动计时器的方法，下面的方法更新了计时器：

 private void startTimer()
{
    mCountDownTimer = new CountDownTimer(mTimeLeftInMillis, 1000) {
        @Override
        public void onTick(long millisUntilFinished) {
            mTimeLeftInMillis = millisUntilFinished;
            updateCountDownText();
            progress++;
            pb.setProgress((int)progress*100/((int)millisUntilFinished/1000));
        }

        @Override
        public void onFinish()
        {
            progress++;
            pb.setProgress(100);
            //Vibration
            if (Build.VERSION.SDK_INT >= 26)
            {
                ((Vibrator) getSystemService(VIBRATOR_SERVICE)).vibrate(VibrationEffect.createOneShot(150, VibrationEffect.DEFAULT_AMPLITUDE));
                Toast.makeText(MainActivity2.this,"Done",Toast.LENGTH_SHORT).show();
            }
            else
            {
                ((Vibrator) getSystemService(VIBRATOR_SERVICE)).vibrate(VibrationEffect.createWaveform(new long[]{150}, new int[]{VibrationEffect.EFFECT_CLICK},-1));
            }
        }
    }.start();
}


 private void updateCountDownText()
{

    //time in minutes and seconds
    int minutes = (int)(mTimeLeftInMillis/1000)/60;
    int seconds = (int)(mTimeLeftInMillis/1000)%60;
    //formating the above to appear as String
    String timeLeftFormatted = String.format("%02d:%02d",minutes,seconds);
    timer.setText(timeLeftFormatted);
}

“pb”是我的进度条的名称。它总是比倒计时早 2 分钟结束，我不知道如何同步它们。同样在完成后，由于某种原因振动没有被触发，即使它之前触发过。 “进度”作为全局变量初始化为零。

Answer 1

但是我没看到你什么时候初始化你的进度条。如果您设置 pb.max（或 Java 中的 setMax）= 100 在每个 onTick 上调用一个方法：

private changePb(long millisUntilFinished){
    pb.progress = (millisUntilFinished / millisStartValue) * 100
}

millisStartValue 是您输入 new CountDownTimer(mTimeLeftInMillis

的第一个值

并且在 onFinish 中，您不必为进度条设置新值。

Answer 2

解决方法如下：

long millisInFuture;

private void startTimer() {
    millisInFuture = mTimeLeftInMillis;
    mCountDownTimer = new CountDownTimer(mTimeLeftInMillis, 1000) {
        @Override
        public void onTick(long millisUntilFinished) {
            mTimeLeftInMillis = millisUntilFinished;
            updateCountDownText();
            long millisPassed = millisInFuture - mTimeLeftInMillis;
            progress = (int) (millisPassed * 100 / millisInFuture);
            pb.setProgress(progress);
        }

        @Override
        public void onFinish() {
            pb.setProgress(100);
            Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                VibrationEffect effect =
                        VibrationEffect.createOneShot(150, VibrationEffect.DEFAULT_AMPLITUDE);
                vibrator.vibrate(effect);
                Toast.makeText(MainActivity2.this, "Done", Toast.LENGTH_SHORT).show();
            } else {
                vibrator.vibrate(150);
            }
        }
    }.start();
}

我的进度条与我的倒数计时器不同步

My progressbar does not sync with my count down timer

java

android

android-studio

wear-os