每分钟根据时间检查用户输入

Question

我正在构建一个闹钟，但我无法设置我的闹钟，以便可以提前设置该功能只有在我将闹钟设置为当前时间时才有效。我尝试使用 Thread.sleep 并且有相同的结果，所以任何帮助都将不胜感激，而且我的理解主要是基本的，所以如果我遗漏了一些简单的东西，我深表歉意。

import javax.swing.*;
import java.awt.*;
import java.io.IOException;
import java.util.Calendar;
import java.util.Scanner;

import net.aksingh.owmjapis.core.OWM;
import net.aksingh.owmjapis.api.APIException;
import net.aksingh.owmjapis.model.CurrentWeather;
import org.jfugue.player.Player;


public class Main {


private static int hour;
private static int minute;
private static int minutetext;
private static int hourtext;



public static void main(String[] args) throws APIException {


    JFrame f = new JFrame();
    f.setSize(320,480);
    OWM owm = new OWM("");
    CurrentWeather cwd = owm.currentWeatherByCityName("");
    int tempcorrect = 273;
    Double temp =cwd.getMainData().getTemp();
    double tempreal = (int) (temp-tempcorrect);



    JPanel mp = new JPanel();
    JPanel tp = new JPanel();
    JPanel bp = new JPanel();


    JButton b1 = new JButton("Set Alarm");
    JButton b2 = new JButton("Stop");
    JLabel l1 = new JLabel("Temperature in " + cwd.getCityName() + " is " + tempreal + " C" );
    JLabel rl = new JLabel("There is a " + cwd.getMainData().getHumidity() + "% chance of rain" );

    bp.add(b1);
    bp.add(b2);
    mp.add(l1);
    mp.add(rl);

    bp.setBorder(BorderFactory.createLineBorder(Color.BLACK));

    mp.add(tp, BorderLayout.NORTH);
    mp.add(bp, BorderLayout.SOUTH);

    DigitalClock myClock = new DigitalClock();
    tp.add(myClock);

    f.add(mp);
    f.setVisible(true);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    b1.addActionListener(e -> {
        JDialog jd = new JDialog();
        JPanel j1 = new JPanel();
        jd.setSize(320,240);
        j1.setSize(180,200);
        j1.setAlignmentY(100);
        FlowLayout f1 = new FlowLayout();
        jd.setLayout(f1);
        jd.add(j1);

        JLabel l2 = new JLabel("Alarm Time (24hrs)");
        JTextField t1 = new JTextField();
        t1.setToolTipText("Hour");
        JTextField t2 = new JTextField();
        t2.setToolTipText("Minutes");


        t1.setColumns(2);
        t2.setColumns(2);

        JButton b21 = new JButton("Set Alarm");
        t1.setLocation(80,300);


        j1.add(l2);


        j1.add(t1);
        j1.add(t2);

        j1.add(b21);

        b21.addActionListener(e1 -> {
            Player player = new Player();
            hourtext= Integer.parseInt(t1.getText());
            minutetext=Integer.parseInt(t2.getText());


            //int v =1;
                if ((hourtext == hour) && (minutetext == minute)) {
                    System.out.println(hour + " : " + minute);
                    player.play("A A A A A A ");
                } else {
                    System.out.println("alarm not active");

                }
        });


        jd.setVisible(true);

    });

}


public static class DigitalClock extends JPanel {

    public static String stringTime;




    public void setStringTime(String xyz) {
        this.stringTime = xyz;
    }

    public int findMinimumBetweenTwoNumbers(int a, int b) {
        return (a <= b) ? a : b;
    }

    DigitalClock() {

        Timer t1 = new Timer(1000, e -> repaint());
        t1.start();
    }

    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);

        Calendar now = Calendar.getInstance();
        hour = now.get(Calendar.HOUR_OF_DAY);
        minute = now.get(Calendar.MINUTE);
        int second = now.get(Calendar.SECOND);

        String correctionHour = (hour < 10) ? "0" : "";
        String correctionMinute = (minute < 10) ? "0" : "";
        String correctionSecond = (second < 10) ? "0" : "";
        setStringTime(correctionHour + hour + ":" + correctionMinute+ minute + ":" + correctionSecond + second);
        g.setColor(Color.BLACK);
        int length = findMinimumBetweenTwoNumbers(this.getWidth(),this.getHeight());
        Font myFont = new Font("SansSerif", Font.PLAIN, length / 5);
        g.setFont(myFont);
        g.drawString(stringTime, length /6, length/2);
    }

    @Override
    public Dimension getPreferredSize() {
        return new Dimension(200, 200);
    }

}

}

Answer 1

我不明白你真正应该做什么。

您想在程序中即时更改当前时间设置小时和分钟值吗？

如果是这样，

这是我的 DigitalClock 类方式。

static class DigitalClock extends JPanel {
    private static final long serialVersionUID = 1L;
    public static String stringTime;

    private static String correctionHour, correctionMinute, correctionSecond;
    private static int second;
    private static Calendar now;

    DigitalClock()
    {
        Timer t1 = new Timer(1000, e -> repaint());

        t1.start();

        now = Calendar.getInstance();
    }

    public static void setStringTime() {
        //stringTime = xyz;
        now = Calendar.getInstance();

        if(hour != 0)
            now.set(Calendar.HOUR_OF_DAY, hour);
        if(minute != 0)
            now.set(Calendar.MINUTE, minute);

        hour = now.get(Calendar.HOUR_OF_DAY);
        minute = now.get(Calendar.MINUTE);
        second = now.get(Calendar.SECOND);

        correctionHour = (hour < 10) ? "0" : "";
        correctionMinute = (minute < 10) ? "0" : "";
        correctionSecond = (second < 10) ? "0" : "";

        stringTime = correctionHour + hour + ":" + correctionMinute+ minute + ":" + correctionSecond + second;
    }

    public static void setStringTime(int _hour, int _minute) {
        hour = _hour;
        minute = _minute;
    }

    public int findMinimumBetweenTwoNumbers(int a, int b) {
        return (a <= b) ? a : b;
    }

    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);

        setStringTime();
        //setStringTime(correctionHour + hour + ":" + correctionMinute+ minute + ":" + correctionSecond + second);
        g.setColor(Color.BLACK);
        int length = findMinimumBetweenTwoNumbers(this.getWidth(),this.getHeight());
        Font myFont = new Font("SansSerif", Font.PLAIN, length / 5);
        g.setFont(myFont);
        g.drawString(stringTime, length /6, length/2);
    }

    @Override
    public Dimension getPreferredSize() {
        return new Dimension(200, 200);
    }

}

我有两个不同参数的方法，通过方法重载设置字符串时间。

我假设在小时和分钟的值为零时没有发生用户操作。

if(hour != 0)
    now.set(Calendar.HOUR_OF_DAY, hour);
if(minute != 0)
    now.set(Calendar.MINUTE, minute);

你只要在b21按钮的ActionListener中设置小时和分钟如下，

b21.addActionListener(e1 -> {
    DigitalClock.setStringTime(hourtext, minutetext);
});

整个代码：

package justtest;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Graphics;
import java.io.IOException;
import java.util.Calendar;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.Timer;

import org.json.JSONException;

import net.aksingh.owmjapis.CurrentWeather;
import net.aksingh.owmjapis.OpenWeatherMap;

public class WeatherView {
    public static void main(String[] args) throws Exception{
        SwingUtilities.invokeLater(new Runnable(){

            @Override
            public void run() {
                JFrame f = new JFrame();
                f.setSize(320, 480);
                try {
                    new Main(f, "Korea");
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }});

    }

}

class Main {

    private static int hour;
    private static int minute;
    private static int minutetext;
    private static int hourtext;

    //OWM owm = new OWM("");
    private OpenWeatherMap owm = new OpenWeatherMap("your registration code here!!");
    private CurrentWeather cwd;

    public double getMaxTemperatureInCelsius()
    {

        double farenheitTemperature = cwd.getMainInstance().getMaxTemperature();//Farenheit
        return (farenheitTemperature  -  32.0) *5.0/9.0;
    }

    private void setCurrentWeather(String cityName) {
        try {
            cwd = owm.currentWeatherByCityName(cityName);
        } catch (JSONException | IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    public Main(final JFrame f, final String cityName) throws Exception{
        setCurrentWeather(cityName);

        int tempcorrect = 273;
        double temp = getMaxTemperatureInCelsius();
        double tempreal = (int) (temp - tempcorrect);

        JPanel mp = new JPanel();
        JPanel tp = new JPanel();
        JPanel bp = new JPanel();

        JButton b1 = new JButton("Set Alarm");
        JButton b2 = new JButton("Stop");
        JLabel l1 = new JLabel("Temperature in " + cwd.getCityName() + " is " + tempreal + " C");
        JLabel rl = new JLabel("There is a " + cwd.getMainInstance().getHumidity() + "% chance of rain");

        bp.add(b1);
        bp.add(b2);
        mp.add(l1);
        mp.add(rl);

        bp.setBorder(BorderFactory.createLineBorder(Color.BLACK));

        mp.add(tp, BorderLayout.NORTH);
        mp.add(bp, BorderLayout.SOUTH);

        DigitalClock myClock = new DigitalClock();
        tp.add(myClock);

        f.add(mp);
        f.setVisible(true);
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        b1.addActionListener(e -> {
            JDialog jd = new JDialog();
            JPanel j1 = new JPanel();
            jd.setSize(320, 240);
            j1.setSize(180, 200);
            j1.setAlignmentY(100);
            FlowLayout f1 = new FlowLayout();
            jd.setLayout(f1);
            jd.add(j1);

            JLabel l2 = new JLabel("Alarm Time (24hrs)");
            JTextField t1 = new JTextField();
            t1.setToolTipText("Hour");
            JTextField t2 = new JTextField();
            t2.setToolTipText("Minutes");

            t1.setColumns(2);
            t2.setColumns(2);

            JButton b21 = new JButton("Set Alarm");
            t1.setLocation(80, 300);

            j1.add(l2);

            j1.add(t1);
            j1.add(t2);

            j1.add(b21);

            b21.addActionListener(e1 -> {
                //Player player = new Player();
                hourtext = Integer.parseInt(t1.getText());
                minutetext = Integer.parseInt(t2.getText());

                // int v =1;
                if ((hourtext == hour) && (minutetext == minute)) {
                    System.out.println(hour + " : " + minute);
                    //player.play("A A A A A A ");
                    DigitalClock.setStringTime(hourtext, minutetext);
                } else {
                    System.out.println("alarm not active");

                }

                DigitalClock.setStringTime(hourtext, minutetext);
            });

            jd.setVisible(true);

        });

    }


    static class DigitalClock extends JPanel {
        private static final long serialVersionUID = 1L;
        public static String stringTime;

        private static String correctionHour, correctionMinute, correctionSecond;
        private static int second;
        private static Calendar now;

        DigitalClock()
        {
            Timer t1 = new Timer(1000, e -> repaint());

            t1.start();

            now = Calendar.getInstance();
        }

        public static void setStringTime() {
            //stringTime = xyz;
            now = Calendar.getInstance();

            if(hour != 0)
                now.set(Calendar.HOUR_OF_DAY, hour);
            if(minute != 0)
                now.set(Calendar.MINUTE, minute);

            hour = now.get(Calendar.HOUR_OF_DAY);
            minute = now.get(Calendar.MINUTE);
            second = now.get(Calendar.SECOND);

            correctionHour = (hour < 10) ? "0" : "";
            correctionMinute = (minute < 10) ? "0" : "";
            correctionSecond = (second < 10) ? "0" : "";

            stringTime = correctionHour + hour + ":" + correctionMinute+ minute + ":" + correctionSecond + second;
        }

        public static void setStringTime(int _hour, int _minute) {
            hour = _hour;
            minute = _minute;
        }

        public int findMinimumBetweenTwoNumbers(int a, int b) {
            return (a <= b) ? a : b;
        }

        @Override
        public void paintComponent(Graphics g) {
            super.paintComponent(g);

            setStringTime();
            //setStringTime(correctionHour + hour + ":" + correctionMinute+ minute + ":" + correctionSecond + second);
            g.setColor(Color.BLACK);
            int length = findMinimumBetweenTwoNumbers(this.getWidth(),this.getHeight());
            Font myFont = new Font("SansSerif", Font.PLAIN, length / 5);
            g.setFont(myFont);
            g.drawString(stringTime, length /6, length/2);
        }

        @Override
        public Dimension getPreferredSize() {
            return new Dimension(200, 200);
        }

    }
}

我希望这会有所帮助。