Implementation of Countdown e-clock for Android (Part 2) and later for android

Implementation of Countdown e-clock for Android (Part 2) and later for android

This article continues with the unfinished part, which will achieve dynamic results

In the program, first specify an End Time:

00:00:00

Calculate the time difference between the current time and the end time.

private long getCurrentShowTimeSeconds() {Date curTime = new Date();    long ret = endDate.getTime() - curTime.getTime();    ret =Math.round( ret/1000 );    return ret >= 0 ? ret : 0;}

Then add a loop in the thread and refresh it every 50 ms.

The Code is as follows:

/*** CountDownView. java * Copyright (C) 2014 * creator: cuiran 2:18:59 */package com. cayden. countdown. view; import 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, Callback, Constants {private static final String TAG = "CountDownView "; private SurfaceHolder mHolder; // used to control SurfaceViewpr Ivate Canvas mCanvas; // declare the Canvas private Paint mPaint; // declare the brush private Thread mThread; // declare a Thread private static final int RADIUS = 10; // declare the ball 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 = "00:00:00"; private Date endDate = null; private long curShowTimeSeconds = 0; public CountDownView (Context context) {super (context); mHolder = this. getHolder (); // obtain the SurfaceHolder object mHolder. addCallback (this); // Add status listening mPaint = new Paint (); // create a Paint brush object mPaint. setColor (Color. BLUE); // set the paint brush color} 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 surfaceCreated (SurfaceHolder arg0) {mThread = new Thread (this); // creates a 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); Date 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 Plotting Method ** 2:22:45 **/public void mDraw () {mCanvas = mHolder. lockCanvas (); // obtain 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, 10, 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, 10, 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 part, which has not been processed yet.

Github address: https://github.com/cayden/CountDown