android倒计时控件示例
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2024-03-31 14:21:10
本文为大家分享了android倒计时控件,供大家参考,具体代码如下
/*
* copyright (c) 2012 the * project
* all...
本文为大家分享了android倒计时控件,供大家参考,具体代码如下
/* * copyright (c) 2012 the * project * all right reserved. * version 1.00 2012-2-11 * author veally@foxmail.com */ package com.ly.sxh.view; import android.content.context; import android.database.contentobserver; import android.os.handler; import android.os.systemclock; import android.provider.settings; import android.util.attributeset; import android.widget.digitalclock; import java.util.calendar; /** * custom digital clock * 倒计时控件 * * @author */ public class customdigitalclock extends digitalclock { calendar mcalendar; private final static string m12 = "h:mm aa"; private final static string m24 = "k:mm"; private formatchangeobserver mformatchangeobserver; private runnable mticker; private handler mhandler; private long endtime; private clocklistener mclocklistener; private boolean mtickerstopped = false; @suppresswarnings("unused") private string mformat; public customdigitalclock(context context) { super(context); initclock(context); } public customdigitalclock(context context, attributeset attrs) { super(context, attrs); initclock(context); } private void initclock(context context) { if (mcalendar == null) { mcalendar = calendar.getinstance(); } mformatchangeobserver = new formatchangeobserver(); getcontext().getcontentresolver().registercontentobserver(settings.system.content_uri, true, mformatchangeobserver); setformat(); } @override protected void onattachedtowindow() { mtickerstopped = false; super.onattachedtowindow(); mhandler = new handler(); /** * requests a tick on the next hard-second boundary */ mticker = new runnable() { public void run() { if (mtickerstopped) return; long currenttime = system.currenttimemillis(); if (currenttime / 1000 == endtime / 1000 - 5 * 60) { mclocklistener.remainfiveminutes(); } long distancetime = endtime - currenttime; distancetime /= 1000; if (distancetime == 0) { settext("00:00:00"); ondetachedfromwindow(); mclocklistener.timeend(); } else if (distancetime < 0) { settext("00:00:00"); } else { settext(dealtime(distancetime)); } invalidate(); long now = systemclock.uptimemillis(); long next = now + (1000 - now % 1000); mhandler.postattime(mticker, next); } }; mticker.run(); } /** * deal time string * * @param time * @return */ public static string dealtime(long time) { stringbuffer returnstring = new stringbuffer(); long day = time / (24 * 60 * 60); long hours = (time % (24 * 60 * 60)) / (60 * 60); long minutes = ((time % (24 * 60 * 60)) % (60 * 60)) / 60; long second = ((time % (24 * 60 * 60)) % (60 * 60)) % 60; string daystr = string.valueof(day); string hoursstr = timestrformat(string.valueof(hours)); string minutesstr = timestrformat(string.valueof(minutes)); string secondstr = timestrformat(string.valueof(second)); returnstring.append(hoursstr).append(":").append(minutesstr).append(":").append(secondstr); return returnstring.tostring(); } /** * format time * * @param timestr * @return */ private static string timestrformat(string timestr) { switch (timestr.length()) { case 1: timestr = "0" + timestr; break; } return timestr; } @override protected void ondetachedfromwindow() { super.ondetachedfromwindow(); mtickerstopped = true; } /** * clock end time from now on. * * @param endtime */ public void setendtime(long endtime) { this.endtime = endtime; } /** * pulls 12/24 mode from system settings */ private boolean get24hourmode() { return android.text.format.dateformat.is24hourformat(getcontext()); } private void setformat() { if (get24hourmode()) { mformat = m24; } else { mformat = m12; } } private class formatchangeobserver extends contentobserver { public formatchangeobserver() { super(new handler()); } @override public void onchange(boolean selfchange) { setformat(); } } public void setclocklistener(clocklistener clocklistener) { this.mclocklistener = clocklistener; } public interface clocklistener { void timeend(); void remainfiveminutes(); } }
希望本文所述对大家学习android软件编程有所帮助。