Android實(shí)現(xiàn)搶購倒計(jì)時(shí)功能
一、效果圖
二、思路
算多少秒，秒數(shù)取余60，（滿足分后剩下的秒數(shù)）
算多少分，秒數(shù)除60，再取余60 （總分?jǐn)?shù)滿足小時(shí)后剩下的分?jǐn)?shù)）
算多少時(shí)，秒數(shù)除60，除60，再取余24 （總小時(shí)滿足天后剩下的小時(shí)）
算多少天，秒數(shù)除60，除60，除24 等到的整數(shù)就是天數(shù)
三、實(shí)現(xiàn)步驟：
我們這里的時(shí)間格式為后臺(tái)返回，格式為：
2021-12-24 00:00:001、時(shí)間轉(zhuǎn)換的工具類
//將年-月-天 時(shí)：分：秒轉(zhuǎn)化為毫秒格式public static long residueTimeout(String endDate, String newDate) throws ParseException {SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Date d1 = df.parse(endDate);Date d2 = df.parse(newDate);long diff = d1.getTime() - d2.getTime();return diff;}/** 將毫秒轉(zhuǎn)換成時(shí)間戳*/public static String stampToDate(Long s) {String res;SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Date date = new Date(s);res = simpleDateFormat.format(date);return res;}
2、時(shí)間倒計(jì)時(shí)工具類
package com.sjl.keeplive.huawei;import android.os.CountDownTimer;/*** 倒計(jì)時(shí)工具類*/public class CountDownTimerUtils {/*** 倒計(jì)時(shí)結(jié)束的回調(diào)接口*/public interface FinishDelegate {void onFinish();}/*** 定期回調(diào)的接口*/public interface TickDelegate {void onTick(long pMillisUntilFinished);}private final static long ONE_SECOND = 1000;/*** 總倒計(jì)時(shí)時(shí)間*/private long mMillisInFuture = 0;/*** 定期回調(diào)的時(shí)間 必須大于0 否則會(huì)出現(xiàn)ANR*/private long mCountDownInterval;/*** 倒計(jì)時(shí)結(jié)束的回調(diào)*/private FinishDelegate mFinishDelegate;/*** 定期回調(diào)*/private TickDelegate mTickDelegate;private MyCountDownTimer mCountDownTimer;/*** 獲取 CountDownTimerUtils** @return CountDownTimerUtils*/public static CountDownTimerUtils getCountDownTimer() {return new CountDownTimerUtils();}/*** 設(shè)置定期回調(diào)的時(shí)間 調(diào)用{@link #setTickDelegate(TickDelegate)}** @param pCountDownInterval 定期回調(diào)的時(shí)間 必須大于0* @return CountDownTimerUtils*/public CountDownTimerUtils setCountDownInterval(long pCountDownInterval) {this.mCountDownInterval = pCountDownInterval;return this;}/*** 設(shè)置倒計(jì)時(shí)結(jié)束的回調(diào)** @param pFinishDelegate 倒計(jì)時(shí)結(jié)束的回調(diào)接口* @return CountDownTimerUtils*/public CountDownTimerUtils setFinishDelegate(FinishDelegate pFinishDelegate) {this.mFinishDelegate = pFinishDelegate;return this;}/*** 設(shè)置總倒計(jì)時(shí)時(shí)間** @param pMillisInFuture 總倒計(jì)時(shí)時(shí)間* @return CountDownTimerUtils*/public CountDownTimerUtils setMillisInFuture(long pMillisInFuture) {this.mMillisInFuture = pMillisInFuture;return this;}/*** 設(shè)置定期回調(diào)** @param pTickDelegate 定期回調(diào)接口* @return CountDownTimerUtils*/public CountDownTimerUtils setTickDelegate(TickDelegate pTickDelegate) {this.mTickDelegate = pTickDelegate;return this;}public void create() {if (mCountDownTimer != null) {mCountDownTimer.cancel();mCountDownTimer = null;}if (mCountDownInterval <= 0) {mCountDownInterval = mMillisInFuture + ONE_SECOND;}mCountDownTimer = new MyCountDownTimer(mMillisInFuture, mCountDownInterval);mCountDownTimer.setTickDelegate(mTickDelegate);mCountDownTimer.setFinishDelegate(mFinishDelegate);}/*** 開始倒計(jì)時(shí)*/public void start() {if (mCountDownTimer == null) {create();}mCountDownTimer.start();}/*** 取消倒計(jì)時(shí)*/public void cancel() {if (mCountDownTimer != null) {mCountDownTimer.cancel();}}private static class MyCountDownTimer extends CountDownTimer {private FinishDelegate mFinishDelegate;private TickDelegate mTickDelegate;/*** @param millisInFuture The number of millis in the future from the call* to {@link #start()} until the countdown is done and {@link #onFinish()}* is called.* @param countDownInterval The interval along the way to receive* {@link #onTick(long)} callbacks.*/public MyCountDownTimer(long millisInFuture, long countDownInterval) {super(millisInFuture, countDownInterval);}@Overridepublic void onTick(long millisUntilFinished) {if (mTickDelegate != null) {mTickDelegate.onTick(millisUntilFinished);}}@Overridepublic void onFinish() {if (mFinishDelegate != null) {mFinishDelegate.onFinish();}}void setFinishDelegate(FinishDelegate pFinishDelegate) {this.mFinishDelegate = pFinishDelegate;}void setTickDelegate(TickDelegate pTickDelegate) {this.mTickDelegate = pTickDelegate;}}}
3、布局文件
<LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="搶購倒計(jì)時(shí)：" /><TextViewandroid:id="@+id/text_day"android:layout_width="wrap_content"android:layout_height="wrap_content"android:background="#ff0000"android:padding="5dp"android:text="00" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text=" 天 " /><TextViewandroid:id="@+id/text_hour"android:layout_width="wrap_content"android:layout_height="wrap_content"android:background="#ff0000"android:padding="5dp"android:text="00" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text=" 時(shí) " /><TextViewandroid:id="@+id/text_minute"android:layout_width="wrap_content"android:layout_height="wrap_content"android:background="#ff0000"android:padding="5dp"android:text="00" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text=" 分 " /><TextViewandroid:id="@+id/text_second"android:layout_width="wrap_content"android:layout_height="wrap_content"android:background="#ff0000"android:padding="5dp"android:text="00" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text=" 秒 " /></LinearLayout>
4、倒計(jì)時(shí)顯示處理
public static void liveDescCountTime(long ms, TextView tvDays, TextView tvHour, TextView tvMinutes, TextView tvSeconds) {long totalSeconds = ms / 1000;long seconds = totalSeconds % 60;long minutes = totalSeconds / 60 % 60;long hours = totalSeconds / 60 / 60 % 24;long days = totalSeconds / 60 / 60 / 24;String dayStr = "";if (days > 0) {if (days > 9) {dayStr += days + "";} else if (days > 0) {dayStr += "0" + days + "";} else {dayStr += "00";}} else {dayStr = "00";}tvDays.setText(dayStr);String hourStr = "";if (hours > 0) {if (hours > 9) {hourStr += hours + "";} else if (hours > 0) {hourStr += "0" + hours + "";} else {hourStr += "00";}} else {hourStr = "00";}tvHour.setText(hourStr);String minutesStr = "";if (minutes > 0) {if (minutes > 9) {minutesStr += minutes + "";} else if (minutes > 0) {minutesStr += "0" + minutes + "";} else {minutesStr += "00";}} else {minutesStr = "00";}tvMinutes.setText(minutesStr);String secondStr = "";if (minutes > 0) {if (seconds > 9) {secondStr += seconds;} else if (seconds > 0) {secondStr += "0" + seconds;} else {secondStr += "00";}} else {secondStr = "00";}tvSeconds.setText(secondStr);}
5、開始倒計(jì)時(shí)
final TextView text_day = findViewById(R.id.text_day);final TextView text_hour = findViewById(R.id.text_hour);final TextView text_minute = findViewById(R.id.text_minute);final TextView text_second = findViewById(R.id.text_second);long residueTime = 0;//獲取當(dāng)前時(shí)間String stampToDate = stampToDate(System.currentTimeMillis());try {//2021-12-24 00:00:00為模擬倒計(jì)時(shí)間數(shù)據(jù)residueTime = residueTimeout("2021-12-24 00:00:00", stampToDate);} catch (ParseException e) {e.printStackTrace();}//倒計(jì)時(shí)CountDownTimerUtils.getCountDownTimer().setMillisInFuture(residueTime).setCountDownInterval(1000).setTickDelegate(new CountDownTimerUtils.TickDelegate() {@Overridepublic void onTick(long pMillisUntilFinished) {liveDescCountTime(pMillisUntilFinished, text_day, text_hour, text_minute, text_second);}}).setFinishDelegate(new CountDownTimerUtils.FinishDelegate() {@Overridepublic void onFinish() {//倒計(jì)時(shí)完成后處理}}).start();
代碼都已經(jīng)放在上面啦
到這里就結(jié)束啦
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