android倒计时控件示例
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)2012The*Project
*Allrightreserved.
*Version1.002012-2-11
*Authorveally@foxmail.com
*/
packagecom.ly.sxh.view;
importandroid.content.Context;
importandroid.database.ContentObserver;
importandroid.os.Handler;
importandroid.os.SystemClock;
importandroid.provider.Settings;
importandroid.util.AttributeSet;
importandroid.widget.DigitalClock;
importjava.util.Calendar;
/**
*Customdigitalclock
*倒计时控件
*
*@author
*/
publicclassCustomDigitalClockextendsDigitalClock{
CalendarmCalendar;
privatefinalstaticStringm12="h:mmaa";
privatefinalstaticStringm24="k:mm";
privateFormatChangeObservermFormatChangeObserver;
privateRunnablemTicker;
privateHandlermHandler;
privatelongendTime;
privateClockListenermClockListener;
privatebooleanmTickerStopped=false;
@SuppressWarnings("unused")
privateStringmFormat;
publicCustomDigitalClock(Contextcontext){
super(context);
initClock(context);
}
publicCustomDigitalClock(Contextcontext,AttributeSetattrs){
super(context,attrs);
initClock(context);
}
privatevoidinitClock(Contextcontext){
if(mCalendar==null){
mCalendar=Calendar.getInstance();
}
mFormatChangeObserver=newFormatChangeObserver();
getContext().getContentResolver().registerContentObserver(Settings.System.CONTENT_URI,true,mFormatChangeObserver);
setFormat();
}
@Override
protectedvoidonAttachedToWindow(){
mTickerStopped=false;
super.onAttachedToWindow();
mHandler=newHandler();
/**
*requestsatickonthenexthard-secondboundary
*/
mTicker=newRunnable(){
publicvoidrun(){
if(mTickerStopped)
return;
longcurrentTime=System.currentTimeMillis();
if(currentTime/1000==endTime/1000-5*60){
mClockListener.remainFiveMinutes();
}
longdistanceTime=endTime-currentTime;
distanceTime/=1000;
if(distanceTime==0){
setText("00:00:00");
onDetachedFromWindow();
mClockListener.timeEnd();
}elseif(distanceTime<0){
setText("00:00:00");
}else{
setText(dealTime(distanceTime));
}
invalidate();
longnow=SystemClock.uptimeMillis();
longnext=now+(1000-now%1000);
mHandler.postAtTime(mTicker,next);
}
};
mTicker.run();
}
/**
*dealtimestring
*
*@paramtime
*@return
*/
publicstaticStringdealTime(longtime){
StringBufferreturnString=newStringBuffer();
longday=time/(24*60*60);
longhours=(time%(24*60*60))/(60*60);
longminutes=((time%(24*60*60))%(60*60))/60;
longsecond=((time%(24*60*60))%(60*60))%60;
StringdayStr=String.valueOf(day);
StringhoursStr=timeStrFormat(String.valueOf(hours));
StringminutesStr=timeStrFormat(String.valueOf(minutes));
StringsecondStr=timeStrFormat(String.valueOf(second));
returnString.append(hoursStr).append(":").append(minutesStr).append(":").append(secondStr);
returnreturnString.toString();
}
/**
*formattime
*
*@paramtimeStr
*@return
*/
privatestaticStringtimeStrFormat(StringtimeStr){
switch(timeStr.length()){
case1:
timeStr="0"+timeStr;
break;
}
returntimeStr;
}
@Override
protectedvoidonDetachedFromWindow(){
super.onDetachedFromWindow();
mTickerStopped=true;
}
/**
*Clockendtimefromnowon.
*
*@paramendTime
*/
publicvoidsetEndTime(longendTime){
this.endTime=endTime;
}
/**
*Pulls12/24modefromsystemsettings
*/
privatebooleanget24HourMode(){
returnandroid.text.format.DateFormat.is24HourFormat(getContext());
}
privatevoidsetFormat(){
if(get24HourMode()){
mFormat=m24;
}else{
mFormat=m12;
}
}
privateclassFormatChangeObserverextendsContentObserver{
publicFormatChangeObserver(){
super(newHandler());
}
@Override
publicvoidonChange(booleanselfChange){
setFormat();
}
}
publicvoidsetClockListener(ClockListenerclockListener){
this.mClockListener=clockListener;
}
publicinterfaceClockListener{
voidtimeEnd();
voidremainFiveMinutes();
}
}
希望本文所述对大家学习Android软件编程有所帮助。