Java GUI动画:动作类和更改类之间的滑块值?
我的GUI框架现在出现了,但是我从滑块中获得的滑块值(速度)没有出现在ActionListener类中,我需要将其用作计时器中的延迟。我如何实现这个价值?关键是运行12幅图像,就像帧一样,速度由它们滑动的值决定。如果它们滑到12,每个图像之间将有12毫秒Java GUI动画:动作类和更改类之间的滑块值?,java,swing,user-interface,actionlistener,jslider,Java,Swing,User Interface,Actionlistener,Jslider,我的GUI框架现在出现了,但是我从滑块中获得的滑块值(速度)没有出现在ActionListener类中,我需要将其用作计时器中的延迟。我如何实现这个价值?关键是运行12幅图像,就像帧一样,速度由它们滑动的值决定。如果它们滑到12,每个图像之间将有12毫秒 import javax.swing.*; import java.awt.event.*; import javax.swing.event.*; import java.awt.*; public class SliderGUI {
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.awt.*;
public class SliderGUI {
public static JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 100, 1);
public static JLabel label = new JLabel ();
public static JPanel panel = new JPanel();
public static int delay;
public static int speed;
public static ImageIcon imageIcon;
public static Timer timer = new Timer (delay, new SliderListener());
public static void main(String[] args) {
JFrame frame = new JFrame("Legend Of Zelda");
panel.setLayout(new GridLayout(5, 5, 5, 25));
slider.setPaintLabels(true);
slider.addChangeListener(new SliderListener());
System.out.println (speed);
timer.addActionListener (new SliderListener());
frame.setVisible(true);
frame.setResizable(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
panel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
panel.setLayout(new BoxLayout(panel, BoxLayout.PAGE_AXIS));
panel.add(label);
panel.add(slider);
frame.setContentPane(panel);
frame.pack();
}
private static class SliderListener implements ChangeListener, ActionListener {
public void stateChanged(ChangeEvent e) {
speed = slider.getValue();
slider.setMajorTickSpacing(25);
}
public void actionPerformed (ActionEvent e) {
for (int i = 1; i < 13; i++) {
if (i == 12){
i = 1;
}
imageIcon = new ImageIcon(i + ".jpg");
label.setIcon(imageIcon);
}
System.out.println ("Hi");
timer = new Timer(speed, new SliderListener());
timer.start();
}
}
}
import javax.swing.*;
导入java.awt.event.*;
导入javax.swing.event.*;
导入java.awt.*;
公共类SliderGUI{
公共静态JSlider滑块=新JSlider(JSlider.HORIZONTAL,0,100,1);
公共静态JLabel标签=新JLabel();
publicstaticjpanel面板=newjpanel();
公共静态输入延迟;
公共静态整数速度;
公共静态图像图标;
公共静态计时器=新计时器(延迟,新的SliderListener());
公共静态void main(字符串[]args){
JFrame=新JFrame(“塞尔达传奇”);
面板设置布局(新网格布局(5,5,5,25));
slider.setPaintLabels(true);
addChangeListener(新的SliderListener());
System.out.println(速度);
timer.addActionListener(新的SliderListener());
frame.setVisible(true);
frame.setresizeable(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
panel.setBorder(BorderFactory.createEmptyByOrder(10,10,10,10));
panel.setLayout(新的BoxLayout(panel,BoxLayout.PAGE_轴));
面板。添加(标签);
面板。添加(滑块);
frame.setContentPane(面板);
frame.pack();
}
私有静态类SliderListener实现ChangeListener、ActionListener{
公共无效状态已更改(更改事件e){
速度=slider.getValue();
滑块。设置主轨迹间距(25);
}
已执行的公共无效操作(操作事件e){
对于(int i=1;i<13;i++){
如果(i==12){
i=1;
}
imageIcon=新的imageIcon(i+“.jpg”);
label.setIcon(图像图标);
}
System.out.println(“Hi”);
定时器=新定时器(速度,新的SliderListener());
timer.start();
}
}
}
不要依赖于静态,它会在你面前爆炸
您正在创建多个实例SliderListener
,而实际上您应该只创建一个实例,并将其应用于JSlider
(在您的情况下)计时器
话虽如此,我(个人)还是把他们分开
每次调用ActionListener
时,您也会创建一个新的计时器(就像每秒一千次!因此1秒后,您可以运行1001个计时器!),所有这些计时器都将同时调用SliderListener
,因为它都是通过全局变量连接的…面对爆炸
但我实际上没有看到你在哪里陈述开始时的计时器
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class SliderGUI {
public static void main(String[] args) {
new SliderGUI();
}
public SliderGUI() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public JSlider slider = new JSlider(JSlider.HORIZONTAL, 10, 100, 10);
public JLabel label;
public int delay;
public int speed;
public ImageIcon imageIcon;
public Timer timer;
public TestPane() {
setLayout(new GridLayout(5, 5, 5, 25));
slider.setPaintLabels(true);
label = new JLabel();
try {
BufferedImage frameImage = ImageIO.read(getClass().getResource("/Run-0.png"));
label.setIcon(new ImageIcon(frameImage));
} catch (IOException ex) {
ex.printStackTrace();
}
SliderListener sliderListener = new SliderListener();
timer = new Timer(delay, sliderListener);
slider.addChangeListener(sliderListener);
System.out.println(speed);
timer.addActionListener(sliderListener);
timer.start();
setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
setLayout(new BoxLayout(this, BoxLayout.PAGE_AXIS));
add(label);
add(slider);
}
private class SliderListener implements ChangeListener, ActionListener {
public void stateChanged(ChangeEvent e) {
int value = slider.getValue();
timer.setDelay(value);
}
private int frame = 0;
@Override
public void actionPerformed(ActionEvent e) {
System.out.println("Tick " + ((Timer) e.getSource()).getDelay());
try {
BufferedImage frameImage = ImageIO.read(getClass().getResource("/Run-" + frame + ".png"));
label.setIcon(new ImageIcon(frameImage));
} catch (IOException exp) {
exp.printStackTrace();
}
frame++;
if (frame > 11) {
frame = 0;
}
}
}
}
}
另外,请记住,计时器
就像一个循环,每次调用ActionListener
时,您都应该将其视为循环的一次迭代,并相应地更新状态…除非有什么东西改变它,否则它不会出现…问自己这个问题,设置为计时器的SliderListener
实例与设置为JSlider
的实例之间有什么关系?它们都在同一个类下?但是,它们是不同的实例…不依赖于静态
。编程101-全局变量是个坏主意