我有一个 CountDownTimer，当用户来到这个 fragment 时，它开始从 17 秒倒计时到 0。现在应该有两个选项:
用户在倒计时到 0 之前点击按钮，按钮打开下一个 fragment
倒计时到 0 auto 打开下一个 fragment
这是我想要的预期结果，但我找不到实现此目标的方法。当用户单击按钮时，如何停止倒计时？我尝试使用 progressBar.setVisibility(View.GONE); 但倒计时仍在倒计时。非常感谢任何帮助!
这是我的代码:
public View onCreateView (@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
...
// Opens the next fragment after clicking on the Ok button
btnOkFrag1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
stopCountdownTimer();
((GameActivity)getActivity()).setViewPager(2);
}
});
return view;
}
// Countdown 17 seconds
int i = 0;
private void startCountdownTimer() {
progressBar.setProgress(i);
final int totalMsecs = 17 * 1000; // 17 seconds in milli seconds
int callInterval = 100;
/** CountDownTimer */
new CountDownTimer(totalMsecs, callInterval) {
public void onTick(long millisUntilFinished) {
int secondsRemaining = (int) millisUntilFinished / 1000;
float fraction = millisUntilFinished / (float) totalMsecs;
// progress bar is based on scale of 1 to 10.000;
progressBar.setProgress((int) (fraction * 10000));
}
public void onFinish() {
stopCountdownTimer();
((GameActivity)getActivity()).setViewPager(2);
// TODO: 2019-10-18 Open next fragment when the countdown is finished. If user clicks ok button before finish, stop countdown.
}
}.start();
}
private void stopCountdownTimer(){
progressBar.setVisibility(View.GONE);
}
最佳答案
您可以将 CountDownTimer(如 Ikazuchi 在评论中所说)分配给这样的变量:
CountDownTimer countDown = new CountDownTimer(totalMsecs, callInterval) {...
然后在分配给按钮的onClick方法中就可以调用了
countDown.cancel()
关于android - 如何在用户打开下一个 fragment 时停止 CountDownTimer 计数？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/58877738/