Android countdown code

, Change the time every one second.

Xml: Copy codeThe Code is as follows: <RelativeLayout xmlns: android = "http://schemas.android.com/apk/res/android"
Xmlns: tools = "http://schemas.android.com/tools"
Android: layout_width = "match_parent"
Android: layout_height = "match_parent"
Android: paddingBottom = "@ dimen/activity_vertical_margin"
Android: paddingLeft = "@ dimen/activity_horizontal_margin"
Android: paddingRight = "@ dimen/activity_horizontal_margin"
Android: paddingTop = "@ dimen/activity_vertical_margin"
Tools: context = ". MainActivity"
Android: background = "#000000"
>
<Com. gettime. CustomDigitalClock
Android: id = "@ + id/time"
Android: layout_width = "fill_parent"
Android: layout_height = "fill_parent"
Android: layout_gravity = "center"
Android: gravity = "center"
Android: textColor = "# FF0000"
Android: textSize = "45sp"/>
</RelativeLayout>
// The preceding <com. gettime. CustomDigitalClock is the complete position of the class.
MainActivity. java
Package com. gettime;
Import android. OS. Bundle;
Import android. app. Activity;
Public class MainActivity extends Activity {
Private CustomDigitalClock timeClock;
@ Override
Protected void onCreate (Bundle savedInstanceState ){
Super. onCreate (savedInstanceState );
SetContentView (R. layout. main );
TimeClock = (CustomDigitalClock) findViewById (R. id. time );
TimeClock. setEndTime (System. currentTimeMillis () + 30*1000*24*24 );
}
}
CustomDigitalClock. java
/*
* Copyright (C) 2012 The * Project
* All right reserved.
* Version 1.00
* Author veally@foxmail.com
*/
Package com. gettime;
Import java. util. Calendar;
Import android. content. Context;
Import android. database. ContentObserver;
Import android. OS. Handler;
Import android. OS. SystemClock;
Import android. provider. Settings;
Import android. text. Html;
Import android. text. Spannable;
Import android. text. Spanned;
Import android. text. style. AbsoluteSizeSpan;
Import android. util. AttributeSet;
Import android. widget. DigitalClock;
/**
* Custom digital clock
*
* @ Author veally@foxmail.com
*/
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;
Public static long distanceTime;
Private ClockListener mClockListener;
Private static boolean isFirst;
Private boolean mTickerStopped;
@ 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 ();
}
DistanceTime = endTime-currentTime;
DistanceTime // = 1000;
If (distanceTime = 0 ){
SetText ("00:00:00 ");
OnDetachedFromWindow ();
} Else if (distanceTime <0 ){
SetText ("00:00:00 ");
OnDetachedFromWindow ();
} 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 Spanned dealTime (long time ){
Spanned str;
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 (dayStr). append ("day"). append (hoursStr). append ("Hour ")
. Append (minutesStr). append ("Minute"). append (secondStr). append ("second ");
Str = Html. fromHtml (returnString. toString ());
If (day> = 10 ){
(Spannable) str). setSpan (new AbsoluteSizeSpan (16), 2, 3,
Spannable. SPAN_EXCLUSIVE_EXCLUSIVE );
(Spannable) str). setSpan (new AbsoluteSizeSpan (16), 5, 7,
Spannable. SPAN_EXCLUSIVE_EXCLUSIVE );
(Spannable) str). setSpan (new AbsoluteSizeSpan (16), 9, 11,
Spannable. SPAN_EXCLUSIVE_EXCLUSIVE );
(Spannable) str). setSpan (new AbsoluteSizeSpan (16), 13, 14,
Spannable. SPAN_EXCLUSIVE_EXCLUSIVE );
} Else {
(Spannable) str). setSpan (new AbsoluteSizeSpan (16), 1, 2,
Spannable. SPAN_EXCLUSIVE_EXCLUSIVE );
(Spannable) str). setSpan (new AbsoluteSizeSpan (16), 4, 6,
Spannable. SPAN_EXCLUSIVE_EXCLUSIVE );
(Spannable) str). setSpan (new AbsoluteSizeSpan (16), 8, 10,
Spannable. SPAN_EXCLUSIVE_EXCLUSIVE );
(Spannable) str). setSpan (new AbsoluteSizeSpan (16), 12, 13,
Spannable. SPAN_EXCLUSIVE_EXCLUSIVE );
}
// Return returnString. toString ();
Return str;
}
/**
* 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 ();
}
}