Android——仿京东秒杀

朱雀 2022-06-05 08:59 232阅读 0赞

**效果图：**

**![Center][]**

京东秒杀是两个小时一个场次，判断本机的时间进行场次定时，然后在这两个小时里面进行倒计时。

**MainActivity**

import android.os.Handler;
    import android.os.Message;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.util.Log;
    import android.widget.TextView;
    
    import java.sql.Date;
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.Calendar;
    
    public class MainActivity extends AppCompatActivity {
    
        private TextView miaosha_time;
        private TextView miaosha_shi;
        private TextView miaosha_minter;
        private TextView miaosha_second;
        private Handler handler = new Handler() {
            @Override
            public void handleMessage(Message msg) {
                super.handleMessage(msg);
                setTime();
                sendEmptyMessageDelayed(0, 1000);
            }
        };
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            initView();
            handler.sendEmptyMessage(0);
    
        }
        public void initView(){
            miaosha_time = (TextView) findViewById(R.id.tv_miaosha_time);
            miaosha_shi = (TextView) findViewById(R.id.tv_miaosha_shi);
            miaosha_minter = (TextView) findViewById(R.id.tv_miaosha_minter);
            miaosha_second = (TextView) findViewById(R.id.tv_miaosha_second);
        }
    
        //秒杀倒计时
        public void setTime() {
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            Date curDate = new Date(System.currentTimeMillis());
            String format = df.format(curDate);
            StringBuffer buffer = new StringBuffer();
            String substring = format.substring(0, 11);
            buffer.append(substring);
            Log.d("ccc", substring);
            Calendar calendar = Calendar.getInstance();
            int hour = calendar.get(Calendar.HOUR_OF_DAY);
            if (hour % 2 == 0) {
                miaosha_time.setText(hour + "点场");
                buffer.append((hour + 2));
                buffer.append(":00:00");
            } else {
                miaosha_time.setText((hour - 1) + "点场");
                buffer.append((hour + 1));
                buffer.append(":00:00");
            }
            String totime = buffer.toString();
            try {
                java.util.Date date = df.parse(totime);
                java.util.Date date1 = df.parse(format);
                long defferenttime = date.getTime() - date1.getTime();
                long days = defferenttime / (1000 * 60 * 60 * 24);
                long hours = (defferenttime - days * (1000 * 60 * 60 * 24)) / (1000 * 60 * 60);
                long minute = (defferenttime - days * (1000 * 60 * 60 * 24) - hours * (1000 * 60 * 60)) / (1000 * 60);
                long seconds = defferenttime % 60000;
                long second = Math.round((float) seconds / 1000);
                miaosha_shi.setText("0" + hours + "");
                if (minute >= 10) {
                    miaosha_minter.setText(minute + "");
                } else {
                    miaosha_minter.setText("0" + minute + "");
                }
                if (second >= 10) {
                    miaosha_second.setText(second + "");
                } else {
                    miaosha_second.setText("0" + second + "");
                }
    
    
            } catch (ParseException e) {
                e.printStackTrace();
            }
        }
    }

布局文件：

**activity\_main.xml**

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:context="com.bwie.com.myapplication.MainActivity">
    
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="40dp"
            android:gravity="center_vertical">
    
            <TextView
    
                android:id="@+id/tv_miaosha"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dp"
                android:text="京东秒杀"
                android:textColor="#f00" />
    
            <TextView
                android:id="@+id/tv_miaosha_time"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="5dp"
                android:text="10点场" />
    
            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content">
    
    
                <TextView
                    android:id="@+id/tv_miaosha_shi"
                    android:layout_width="15dp"
                    android:layout_height="15dp"
                    android:background="@drawable/shape_miaosha_time"
                    android:gravity="center"
                    android:text="1"
                    android:textColor="#fff"
                    android:textSize="10sp" />
    
                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="3dp"
    
                    android:text=":" />
    
                <TextView
                    android:id="@+id/tv_miaosha_minter"
                    android:layout_width="15dp"
                    android:layout_height="15dp"
                    android:background="@drawable/shape_miaosha_time"
                    android:gravity="center"
                    android:text="1"
                    android:textColor="#fff"
                    android:textSize="10sp" />
    
                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="3dp"
    
                    android:text=":" />
    
                <TextView
                    android:id="@+id/tv_miaosha_second"
                    android:layout_width="15dp"
                    android:layout_height="15dp"
                    android:background="@drawable/shape_miaosha_time"
                    android:gravity="center"
                    android:text="1"
                    android:textColor="#fff"
                    android:textSize="10sp" />
            </LinearLayout>
        </LinearLayout>
    </RelativeLayout>

shape\_miaosha\_time.xml（对倒计时小黑框圆角的实现）

<?xml version="1.0" encoding="utf-8"?>
    <shape android:shape="rectangle"
        xmlns:android="http://schemas.android.com/apk/res/android">
        <solid android:color="#000"></solid>
       <corners android:radius="3dp"></corners>
    
    </shape>

一个和京东一模一样的秒杀倒计时就实现了，是不是很简单。

[Center]: /images/20220605/043da56f95b74170b667ad6cf290c794.png