Android 實現(xiàn)搶購倒計時功能的示例
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 (總分數(shù)滿足小時后剩下的分數(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)
三、實現(xiàn)步驟:
我們這里的時間格式為后臺返回,格式為:
2021-12-24 00:00:00
1、時間轉(zhuǎn)換的工具類
//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;
}
2、時間倒計時工具類
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;
}
}
}
3、布局文件
<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>
4、倒計時顯示處理
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、開始倒計時
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();
以上就是Android 實現(xiàn)搶購倒計時功能的示例的詳細內(nèi)容,更多關(guān)于Android 搶購倒計時功能的資料請關(guān)注腳本之家其它相關(guān)文章!
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