计时器显示倒计时

Question

现在我的计时器显示秒数，我可以添加什么来以 0:00 格式显示时间？

new CountDownTimer((300 * 1000), 1000) {

                         public void onTick(long millisUntilFinished) {
                             mTextField.setText("seconds remaining: " + millisUntilFinished / 1000);
                         }

                         public void onFinish() {
                             mTextField.setText("Session Completed!");
                         }
                      }.start();

Answer 1

试试这个：

Date date = new Date((300 * 1000)* 1000);
SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
String dateFormatted = formatter.format(date);

您也可以使用

SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss:SSS");

Answer 2

@Override
public void onTick(long millisUntilFinished) {
 long temp_long = millisUntilFinished / 1000;

 second = temp_long % 60;
 hour = temp_long / 3600;
 minute = (temp_long / 60) % 60;
 String tempTimer;

 tempTimer = ((hour < 10) ? "0" + hour : "" + hour)+ ((minute < 10) ? ":0" + minute : ":"+ minute)+ ((second < 10) ? ":0" + second : ":" + second);

 mTextField.setText(tempTimer);
}

Answer 3

您可以使用 android Chronometer 显示倒计时。

http://developer.android.com/reference/android/widget/Chronometer.html

Answer 4

你可以试试这个

val min：长 = millisUntilFinished / 1000 / 60

val 秒：长 = millisUntilFinished / 1000 % 60

如果（秒< 10) {

 binding?.value?.text = "0$min:0$sec"

}其他{

 binding?.value.text =" 0$min:$sec"

}