本文实例为大家分享了Android ListView列表实现倒计时的具体代码，供大家参考，具体内容如下

效果图：

1. Activity

package com.s296267833.ybs.activity.firstPage.timedown;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.widget.ListView;

import com.s296267833.ybs.R;

import java.util.ArrayList;

import java.util.List;

/**

* ListView列表实现倒计时

* */

public class TimeDownActivity extends AppCompatActivity {

private TimeDownLvAdapter mAdapter;

private ListView mListView;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_time_down);

mListView= findViewById(R.id.lv_time_down);

setAdapter();

}

/**

* 设置适配器

* */

private void setAdapter() {

mAdapter = new TimeDownLvAdapter(this,getTimerItemList());

mListView.setAdapter(mAdapter);

}

/**

* 设置倒计时的数据

* */

public static List getTimerItemList() {

List lstTimeDownItems = new ArrayList<>();

lstTimeDownItems.add(new TimeDownItem("A千万种心动", System.currentTimeMillis() + 11 * 1000));

lstTimeDownItems.add(new TimeDownItem("B千万种心动", System.currentTimeMillis() + 22 * 1000));

lstTimeDownItems.add(new TimeDownItem("C千万种心动", System.currentTimeMillis() + 26 * 1000));

lstTimeDownItems.add(new TimeDownItem("D千万种心动", System.currentTimeMillis() + 33 * 1000));

lstTimeDownItems.add(new TimeDownItem("E千万种心动", System.currentTimeMillis() + 24 * 1000));

lstTimeDownItems.add(new TimeDownItem("F千万种心动", System.currentTimeMillis() + 98 * 1000));

lstTimeDownItems.add(new TimeDownItem("G千万种心动", System.currentTimeMillis() + 14 * 1000));

lstTimeDownItems.add(new TimeDownItem("H千万种心动", System.currentTimeMillis() + 36 * 1000));

lstTimeDownItems.add(new TimeDownItem("I千万种心动", System.currentTimeMillis() + 58 * 1000));

lstTimeDownItems.add(new TimeDownItem("J千万种心动", System.currentTimeMillis() + 47 * 1000));

lstTimeDownItems.add(new TimeDownItem("K千万种心动", System.currentTimeMillis() + 66 * 1000));

lstTimeDownItems.add(new TimeDownItem("L千万种心动", System.currentTimeMillis() + 55 * 1000));

lstTimeDownItems.add(new TimeDownItem("M千万种心动", System.currentTimeMillis() + 62 * 1000));

lstTimeDownItems.add(new TimeDownItem("N千万种心动", System.currentTimeMillis() + 45 * 1000));

lstTimeDownItems.add(new TimeDownItem("O千万种心动", System.currentTimeMillis() + 14 * 1000));

return lstTimeDownItems;

}

/**

* 清空当前 CountTimeDown 资源

* */

@Override

protected void onDestroy() {

super.onDestroy();

if (mAdapter != null) {

mAdapter.cancelAllTimers();

}

}

}

2. activity_time_down布局

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

tools:context="com.s296267833.ybs.activity.firstPage.timedown.TimeDownActivity">

android:id="@+id/lv_time_down"

android:background="#faa"

android:divider="#00000000"

android:layout_width="match_parent"

android:layout_height="match_parent">

3. ListView的item类(TimeDownItem)

package com.s296267833.ybs.activity.firstPage.timedown;

/**

* Created by JiYaRuo on 2019/1/9.

* @BeUsedFor 倒计时Lv的Bean类

*/

public class TimeDownItem {

//其他属性

public String name;

//倒计时长，单位毫秒

public long expirationTime;

public TimeDownItem(String name, long expirationTime) {

this.name = name;

this.expirationTime = expirationTime;

}

}

4. listview的item布局

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="64dp"

android:orientation="horizontal"

android:padding="10dp">

android:id="@+id/tv_status"

android:layout_width="0dp"

android:layout_height="wrap_content"

android:layout_weight="1"

tools:text="status"

android:textColor="#ffffff"

android:layout_gravity="center"

android:gravity="center" />

android:id="@+id/tv_time"

android:layout_width="0dp"

android:layout_height="wrap_content"

android:layout_weight="1"

android:textSize="15sp"

android:gravity="right"

android:textColor="#ffffff"

android:layout_gravity="center_vertical"

tools:text="00:00:00"/>

5. ListView的适配器TimeDownLvAdapter

package com.s296267833.ybs.activity.firstPage.timedown;

import android.content.Context;

import android.os.CountDownTimer;

import android.util.SparseArray;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.TextView;

import com.s296267833.ybs.R;

import com.s296267833.ybs.activity.firstPage.TimeUtils;

import java.util.List;

/**

* Created by JiYaRuo on 2019/1/9.

* @BeUsedFor 列表倒计时listView的适配器

*/

public class TimeDownLvAdapter extends BaseAdapter {

private List mDatas;

private Context mContext;

//用于退出 Activity,避免 Countdown，造成资源浪费。

private SparseArray countDownCounters;

public TimeDownLvAdapter(Context mContext, List mDatas) {

this.mContext = mContext;

this.mDatas = mDatas;

this.countDownCounters = new SparseArray<>();

}

@Override

public int getCount() {

if (mDatas != null && !mDatas.isEmpty()) {

return mDatas.size();

}

return 0;

}

@Override

public Object getItem(int position) {

if (mDatas != null && !mDatas.isEmpty()) {

return mDatas.get(position);

}

return null;

}

@Override

public long getItemId(int position) {

return position;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

final ViewHolder viewHolder;

if (convertView == null) {

convertView = LayoutInflater.from(mContext).inflate(R.layout.list_item_common, parent, false);

viewHolder = new ViewHolder();

viewHolder.statusTv = (TextView) convertView.findViewById(R.id.tv_status);

viewHolder.timeTv = (TextView) convertView.findViewById(R.id.tv_time);

convertView.setTag(viewHolder);

} else {

viewHolder = (ViewHolder) convertView.getTag();

}

final TimeDownItem data = mDatas.get(position);

viewHolder.statusTv.setText(data.name);

CountDownTimer countDownTimer = countDownCounters.get(viewHolder.timeTv.hashCode());

if (countDownTimer != null) {

//将复用的倒计时清除

countDownTimer.cancel();

}

long timer = data.expirationTime;

timer = timer - System.currentTimeMillis();

//expirationTime 与系统时间做比较，timer 小于零，则此时倒计时已经结束。

if (timer > 0) {

countDownTimer = new CountDownTimer(timer, 1000) {

public void onTick(long millisUntilFinished) {

viewHolder.timeTv.setText(TimeUtils.getCountTimeByLong(millisUntilFinished));

}

public void onFinish() {

viewHolder.timeTv.setText("00:00:00");

viewHolder.statusTv.setText(data.name + ":结束");

}

}.start();

//将此 countDownTimer 放入list.

countDownCounters.put(viewHolder.timeTv.hashCode(), countDownTimer);

} else {

viewHolder.timeTv.setText("00:00:00");

viewHolder.statusTv.setText(data.name + ":结束");

}

return convertView;

}

/**

* ViewHolder内部类

* */

public class ViewHolder {

public TextView statusTv;

public TextView timeTv;

}

/**

* 清空当前 CountTimeDown 资源

*/

public void cancelAllTimers() {

if (countDownCounters == null) {

return;

}

for (int i = 0, length = countDownCounters.size(); i < length; i++) {

CountDownTimer cdt = countDownCounters.get(countDownCounters.keyAt(i));

if (cdt != null) {

cdt.cancel();

}

}

}

}

6. 工具类TimeUtils

package com.s296267833.ybs.activity.firstPage;

/**

* Created by JiYaRuo on 2019/1/9.

* @BeUsedFor 倒计时工具类

*/

public class TimeUtils {

/**

* 毫秒换成00:00:00

* */

public static String getCountTimeByLong(long finishTime) {

int totalTime = (int) (finishTime / 1000);//秒

int hour = 0, minute = 0, second = 0;

if (3600 <= totalTime) {

hour = totalTime / 3600;

totalTime = totalTime - 3600 * hour;

}

if (60 <= totalTime) {

minute = totalTime / 60;

totalTime = totalTime - 60 * minute;

}

if (0 <= totalTime) {

second = totalTime;

}

StringBuilder sb = new StringBuilder();

if (hour < 10) {

sb.append("0").append(hour).append(":");

} else {

sb.append(hour).append(":");

}

if (minute < 10) {

sb.append("0").append(minute).append(":");

} else {

sb.append(minute).append(":");

}

if (second < 10) {

sb.append("0").append(second);

} else {

sb.append(second);

}

return sb.toString();

}

/**

* 将LONG类型的时间戳转换为xx:xx:xx时分秒

* */

public static String formatLongToTimeStr(Long l) {

int hour = 0;

int minute = 0;

int second = 0;

second = l.intValue() ;

if (second > 60) {

minute = second / 60; //取整

second = second % 60; //取余

}

if (minute > 60) {

hour = minute / 60;

minute = minute % 60;

}

String strtime = hour+"："+minute+"："+second;

return strtime;

}

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。