Android计时器秒数快速倒计时

Question

    new CountDownTimer(400000, 100) {

        public void onTick(long millisUntilFinished) {

            Timer.setText((millisUntilFinished / 10000)+":"+(millisUntilFinished % 6000 / 100));

        }

        public void onFinish() {
            Timer.setText("done!");

            Intent intent = new Intent(ExamActivity.this,ResultActivity.class);
            intent.putExtra("Score", score);
            startActivity(intent);
            finish();       
        }
    }.start();

问题在于秒数如此之快。我试图实现40分钟的倒计时..上面是我的代码

Answer 1

如果你想要40分钟试试这个：

new CountDownTimer(40*60*1000, 1000)

Answer 2

访问CountDownTimer Documentation

 new CountDownTimer(2400000, 1000) {

        public void onTick(long millisUntilFinished) {

            Timer.setText((millisUntilFinished / 10000)+":"+(millisUntilFinished % 6000 / 100));

        }

        public void onFinish() {
            Timer.setText("done!");

            Intent intent = new Intent(ExamActivity.this,ResultActivity.class);
            intent.putExtra("Score", score);
            startActivity(intent);
            finish();       
        }
    }.start();

Answer 3

您计算的是以厘秒为单位，而不是毫秒。

尝试单独设置。

 new CountDownTimer(40*60*1000, 1000) {

        public void onTick(long millisUntilFinished) {

            Timer.setText((millisUntilFinished / 10000)+":"+(millisUntilFinished % 6000 / 100));

        }

        public void onFinish() {
            Timer.setText("done!");

            Intent intent = new Intent(ExamActivity.this,ResultActivity.class);
            intent.putExtra("Score", score);
            startActivity(intent);
            finish();       
        }
    }.start();

Answer 4

new CountDownTimer(40*60*1000, 1000) {

        public void onTick(long millisUntilFinished) {

        long minute=    millisUntilFinished / (1000*60);
        long second=    (millisUntilFinished -(minute*60*1000))/1000;

            Timer.setText(minute+":"+
                    second);

        }

        public void onFinish() {
            Timer.setText("done!");

                            Intent intent = new Intent(ExamActivity.this,ResultActivity.class);
                            intent.putExtra("Score", score);
                            startActivity(intent);
                            finish();       
        }
    }.start();
}