这里有新鲜出炉的精品教程,程序狗速度看过来!
Android是一种基于Linux的自由及开放源代码的操作系统,主要使用于移动设备,如智能手机和平板电脑,由Google公司和开放手机联盟领导及开发。尚未有统一中文名称,中国大陆地区较多人使用“安卓”或“安致”。
这篇文章主要为大家详细介绍了android倒计时控件示例,感兴趣的小伙伴们可以参考一下
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。
来源: http://www.phperz.com/article/17/0914/348793.html