本文介绍了如何使用Android CountDownTimer倒数一天的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我是这里的新手,也是Android开发的新手,我对Android CountDownTimer有疑问。我如何使用Android的CountDownTimer来倒计时到某个特定日期,例如2015年11月6日?另外,如何将Java代码与相应的XML代码一起使用?
I'm new here and new to Android Development, I Have a question regarding the Android CountDownTimer. How am I able to use Android's CountDownTimer, to count down to a specific date, let's say the 6th Novemeber 2015? Also How would I use the Java code with corresponding XML Code?
我在这个问题上遇到了麻烦(),真的无法理解发生了什么事吗?有人可以抽出一点时间来帮助我吗?
I had a llok at this question (how to countdown to a date) and couldn't really understand what was going on? Can anyone spare a moment to help me?
谢谢
推荐答案
这正是您的操作方式
更新3
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.your_layout);
TextView tv_countdown = (TextView) findViewById(R.id.your_textview_id);
Calendar start_calendar = Calendar.getInstance();
Calendar end_calendar = Calendar.getInstance();
long start_millis = start_calendar.getTimeInMillis(); //get the start time in milliseconds
long end_millis = end_calendar.getTimeInMillis(); //get the end time in milliseconds
long total_millis = (end_millis - start_millis); //total time in milliseconds
end_calendar.set(2015, 10, 6); // 10 = November, month start at 0 = January
//1000 = 1 second interval
CountDownTimer cdt = new CountDownTimer(total_millis, 1000) {
@Override
public void onTick(long millisUntilFinished) {
long days = TimeUnit.MILLISECONDS.toDays(millisUntilFinished);
millisUntilFinished -= TimeUnit.DAYS.toMillis(days);
long hours = TimeUnit.MILLISECONDS.toHours(millisUntilFinished);
millisUntilFinished -= TimeUnit.HOURS.toMillis(hours);
long minutes = TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished);
millisUntilFinished -= TimeUnit.MINUTES.toMillis(minutes);
long seconds = TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished);
tv_countdown.setText(days + ":" + hours + ":" + minutes + ":" + seconds); //You can compute the millisUntilFinished on hours/minutes/seconds
}
@Override
public void onFinish() {
tv_countdown.setText("Finish!");
}
};
cdt.start();
}
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