The implementation of the Android Countdown electronic clock (next article)

This article continues with the unfinished part of the story, which will achieve dynamic effects

A deadline is given in the program first:

2014-12-20 00:00:00

Then calculate the time difference between the current time and the cutoff time

Private Long Getcurrentshowtimeseconds () {Date curtime = new Date ();    LONG ret = Enddate.gettime ()-curtime.gettime ();    RET =math.round (ret/1000);    return ret >= 0? ret:0;}

The loop is then added to the thread, and the interval is 50ms refreshed once.

The specific code is as follows

/** * Countdownview.java * Copyright (C) * Creator:cuiran 2014-12-19 pm 2:18:59 */package Com.cayden.countdown.view;im Port Java.text.parseposition;import java.text.simpledateformat;import Java.util.arraylist;import java.util.Date; Import Com.cayden.countdown.constants;import Android.annotation.suppresslint;import android.content.Context; Import Android.graphics.canvas;import android.graphics.color;import Android.graphics.paint;import Android.util.Log ; Import Android.view.surfaceholder;import Android.view.surfaceholder.callback;import android.view.SurfaceView;/** * Countdown View * @author Cuiran * @version 1.0.0 */public class Countdownview extends Surfaceview implements Runnable, Callbac    k,constants {private static final String tag= "Countdownview";p rivate surfaceholder Mholder;    Used to control surfaceviewprivate Canvas Mcanvas;    Declaration Canvas private Paint Mpaint;    Declaration Brush private Thread Mthread; Declares a thread private static final int radius=10;//declaration sphere radius private static final int margin_top = 60;    private static final int margin_left = 30;       Private arraylist<int[][]> list=new arraylist<int[][]> ();    private static final String end= "2014-12-20 00:00:00";    Private Date Enddate=null;  Private Long Curshowtimeseconds=0;public Countdownview (context context) {super (context);    Mholder = This.getholder ();    Get Surfaceholder Object Mholder.addcallback (this);    Add state listener Mpaint = new Paint ();   Create a Brush object Mpaint.setcolor (Color.Blue);    Sets the color of the brush}private long getcurrentshowtimeseconds () {Date curtime = new Date ();    LONG ret = Enddate.gettime ()-curtime.gettime ();    RET =math.round (ret/1000); return ret >= 0? ret:0;} @Overridepublic void surfacechanged (Surfaceholder arg0, int arg1, int arg2, int arg3) {} @Overridepublic void Surfacecreate    D (Surfaceholder arg0) {mthread = new Thread (this); Create thread Object Mthread.start ();} @Overridepublic void surfacedestroyed (Surfaceholder arg0) {} @SuppressLint ("SimpleDateFormat") public Date StrtodatelonG (String strdate) {if ("". Equals (strdate) | | null==strdate) {return null;} SimpleDateFormat formatter = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss"); Parseposition pos = new parseposition (0);D ate strtodate = Formatter.parse (strdate, POS); return strtodate;}      @Overridepublic void Run () {try{list.add (DATA0);      List.add (DATA1);      List.add (DATA2);      List.add (DATA3);      List.add (DATA4);      List.add (DATA5);      List.add (DATA6);      List.add (DATA7);      List.add (DATA8);      List.add (DATA9);      List.add (DATA10);      Enddate=strtodatelong (END);      while (true) {curshowtimeseconds=getcurrentshowtimeseconds ();      Mdraw ();      Thread.Sleep (50); }}catch (Exception e) {log.e (TAG, "Run Error", E);}}    /** * Custom Drawing method * 2014-12-19 pm 2:22:45 * */public void Mdraw () {Mcanvas = Mholder.lockcanvas ();     Get the Canvas object and start painting the canvas mcanvas.drawcolor (color.black); Set the canvas color to black canvas (Mcanvas);       Mholder.unlockcanvasandpost (Mcanvas); Display the canvas on the screen}public void canvas (canvas mcanvas) {//Draw a circle,(x-axis, y-axis, radius, brush) int hours= (int) curshowtimeseconds/3600;        int minutes= (int) (curshowtimeseconds-hours * 3600)/60;                int seconds= (int) Curshowtimeseconds% 60;        Canvasdigit (Margin_left, Margin_top, HOURS/10, Mcanvas);        Canvasdigit (Margin_left + 15* (radius+1), Margin_top, hours%10, Mcanvas);        Canvasdigit (Margin_left + 30* (RADIUS + 1), margin_top, Mcanvas);        Canvasdigit (Margin_left + 39* (radius+1), Margin_top, MINUTES/10, Mcanvas);        Canvasdigit (Margin_left + 54* (radius+1), Margin_top, minutes%10, Mcanvas);        Canvasdigit (Margin_left + 69* (radius+1), Margin_top, Mcanvas);        Canvasdigit (Margin_left + 78* (radius+1), Margin_top, SECONDS/10, Mcanvas); Canvasdigit (Margin_left + 93* (radius+1), Margin_top, seconds%10, Mcanvas);} public void canvasdigit (int x,int y,int Num,canvas mcanvas) {Int. [] data=list.get (num); for (int i=0;i<data.length;i+ +) {for (int j=0;j<data[i].length;j++{if (data[i][j]==1) {mcanvas.drawcircle (x + j*2* (radius+1) + (radius+1), Y + i*2* (radius+1) + (radius+1), RADIUS, Mpaint);}}} }}

Detailed code is required to access the specific optimization section that has not been processed yet.

GitHub Address: Https://github.com/cayden/CountDown

The implementation of the Android Countdown electronic clock (next article)