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這篇文章將為大家詳細(xì)講解有關(guān)Android如何實現(xiàn)搶購倒計時功能,小編覺得挺實用的,因此分享給大家做個參考,希望大家閱讀完這篇文章后可以有所收獲。
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)滿足小時后剩下的分?jǐn)?shù))
算多少時,秒數(shù)除60,除60,再取余24 (總小時滿足天后剩下的小時)
算多少天,秒數(shù)除60,除60,除24 等到的整數(shù)就是天數(shù)
我們這里的時間格式為后臺返回,格式為:
2021-12-24 00:00:00
//將年-月-天 時: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; }
package com.sjl.keeplive.huawei; import android.os.CountDownTimer; /** * 倒計時工具類 */ public class CountDownTimerUtils { /** * 倒計時結(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; /** * 總倒計時時間 */ private long mMillisInFuture = 0; /** * 定期回調(diào)的時間 必須大于0 否則會出現(xiàn)ANR */ private long mCountDownInterval; /** * 倒計時結(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)的時間 調(diào)用{@link #setTickDelegate(TickDelegate)} * * @param pCountDownInterval 定期回調(diào)的時間 必須大于0 * @return CountDownTimerUtils */ public CountDownTimerUtils setCountDownInterval(long pCountDownInterval) { this.mCountDownInterval = pCountDownInterval; return this; } /** * 設(shè)置倒計時結(jié)束的回調(diào) * * @param pFinishDelegate 倒計時結(jié)束的回調(diào)接口 * @return CountDownTimerUtils */ public CountDownTimerUtils setFinishDelegate(FinishDelegate pFinishDelegate) { this.mFinishDelegate = pFinishDelegate; return this; } /** * 設(shè)置總倒計時時間 * * @param pMillisInFuture 總倒計時時間 * @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); } /** * 開始倒計時 */ public void start() { if (mCountDownTimer == null) { create(); } mCountDownTimer.start(); } /** * 取消倒計時 */ 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); } @Override public void onTick(long millisUntilFinished) { if (mTickDelegate != null) { mTickDelegate.onTick(millisUntilFinished); } } @Override public void onFinish() { if (mFinishDelegate != null) { mFinishDelegate.onFinish(); } } void setFinishDelegate(FinishDelegate pFinishDelegate) { this.mFinishDelegate = pFinishDelegate; } void setTickDelegate(TickDelegate pTickDelegate) { this.mTickDelegate = pTickDelegate; } } }
<LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:orientation="horizontal"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="搶購倒計時:" /> <TextView android:id="@+id/text_day" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="#ff0000" android:padding="5dp" android:text="00" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text=" 天 " /> <TextView android:id="@+id/text_hour" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="#ff0000" android:padding="5dp" android:text="00" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text=" 時 " /> <TextView android:id="@+id/text_minute" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="#ff0000" android:padding="5dp" android:text="00" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text=" 分 " /> <TextView android:id="@+id/text_second" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="#ff0000" android:padding="5dp" android:text="00" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text=" 秒 " /> </LinearLayout>
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); }
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)前時間 String stampToDate = stampToDate(System.currentTimeMillis()); try { //2021-12-24 00:00:00為模擬倒計時間數(shù)據(jù) residueTime = residueTimeout("2021-12-24 00:00:00", stampToDate); } catch (ParseException e) { e.printStackTrace(); } //倒計時 CountDownTimerUtils.getCountDownTimer() .setMillisInFuture(residueTime) .setCountDownInterval(1000) .setTickDelegate(new CountDownTimerUtils.TickDelegate() { @Override public void onTick(long pMillisUntilFinished) { liveDescCountTime(pMillisUntilFinished, text_day, text_hour, text_minute, text_second); } }) .setFinishDelegate(new CountDownTimerUtils.FinishDelegate() { @Override public void onFinish() { //倒計時完成后處理 } }).start();
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