我有这些类:主类和 GUI。在 GUI 中,有一个 actionListener,它从用户界面面板收集信息。如何将这些变量发送到驱动程序类,以执行那里的所有内容?我需要将它们添加到无限循环中来绘制移动对象,绘制方法在其他类中。 GUI 已扩展框架
以下是类(class):
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class GUI extends Frame implements WindowListener,ActionListener {
JLabel name1 = new JLabel("Name");
JLabel color1 = new JLabel("Color");
JLabel diam1 = new JLabel("Diameter");
JLabel dist1 = new JLabel("Distance");
JLabel speed1 = new JLabel("Speed");
JTextField name2 = new JTextField();
JTextField color2 = new JTextField();
JTextField diam2 = new JTextField();
JTextField dist2 = new JTextField();
JTextField speed2 = new JTextField();
public void windowClosing(WindowEvent e) {
dispose();
System.exit(0);
}
double distance;
int Speed;
double diameter;
public void actionPerformed(ActionEvent e) {
createVariables();
}
public void createVariables(){
try {
distance = Double.parseDouble(dist2.getText());
Speed = Integer.parseInt(speed2.getText());
diameter = Double.parseDouble(diam2.getText());
}
catch(NumberFormatException i) {
}
Planet cP = new Planet(name2.getText(),distance,diameter,color2.getText(),Speed );
Main plnt = new Main(cP);
}
public void createFrame1(){
addWindowListener(this);
setLayout(new GridLayout(6,6,5,5));
JButton mygt = new JButton("Add planet");
mygt.addActionListener(this);
name2.setText("belekoks");color2.setText("RED");diam2.setText("30");dist2.setText(" 60");speed2.setText("2");
add(name1);add(name2);add(color1);add(color2);add(diam1);
add(diam2);add(dist1);add(dist2);add(speed1);add(speed2);
add(mygt);
}
public GUI(String title){
super(title);
createFrame1();
}
public void windowClosed(WindowEvent e) {}
public void windowActivated(WindowEvent arg0) {}
public void windowDeactivated(WindowEvent arg0) {}
public void windowDeiconified(WindowEvent arg0) {}
public void windowIconified(WindowEvent arg0) {}
public void windowOpened(WindowEvent arg0) {}
}
和主要:
import java.awt.event.ActionEvent;
import java.util.Random;
public class Main{
/**
* @param args
*/
public Main(Planet name){
super(name);
}
public static void main(String[] args) {
SolarSystem system = new SolarSystem(300, 300);
GUI p = new GUI("New Planet");
p.pack();
p.setVisible(true);
Sun sun = new Sun("Sun", 0, 90, "YELLOW", 0);
Planet venus = new Planet("Venus",70,15,"ORANGE",2);
Planet earth = new Planet("Earth",100,20,"BLUE",1);
Moon moon = new Moon("Moon",earth.dist,5,"GRAY", 1, 30, 3);
Moon[] moons = new Moon[100];
moons[0] = moon;
Planet[] planets = new Planet[100];
planets[0] = earth;
planets[1] = venus;
Random rG = new Random();
Asteroid[] asteroids = new Asteroid[100];
for(int i=0; i<100;i++){
Asteroid Asteroids = new Asteroid("Asteroid", rG.nextDouble()+rG.nextInt(10)+45,rG.nextDouble()+rG.nextInt(10),"DARK_GRAY",rG.nextInt(360 ), 1);
asteroids[i]=Asteroids;
}
/*LinkedList list = new LinkedList();
for (int i=0;i<1;i++){
list.add(moons[i]);
}
for (int i=0;i<2;i++){
list.add(planets[i]);
}
for (int i=0;i<100;i++){
list.add(asteroids[i]);
}
for (int i=0;i<100;i++){
list.add(sun);
}
for(int y=0;y<2;y++){
planets[2].move();
planets[2].drawOn(system);
system.finishedDrawing();
}
for (int i=0; i>=0; i++){
sun.drawOn(system);
for(int y=0;y<3;y++){
planets[y].move();
planets[y].drawOn(system);
}
for (int y=0; y<100; y++){
asteroids[y].move();
asteroids[y].drawOn(system);
}
for (int y=0; y<1; y++){
moons[y].move();
moons[y].drawOn(system);
}
system.finishedDrawing();
}
*/
}
}
我不希望您查看整个代码,但主要的是我在 GUI 中的 actionListener 中获取变量,并且我想将它们传递给 main 以便创建一个稍后可以绘制的对象。
planet 类创建一个对象:
public class Planet extends CosmicEntity {
public Planet(String name, double distance, double diameter, String col, int speed) {
super(name,distance,diameter,col,speed, 0);
}
}
和 CosmicEntity 类,它包含从传递的变量绘制行星的所有变量和方法 (super(name,distance,diameter,col,speed, 0))。
最佳答案
根据所提供的信息很难确切地知道您需要什么,但我认为您不想使用无限循环,不适用于您的 GUI。大多数简单的动画都可以通过 Swing Timer 轻松驱动。
对于您的其他问题,一般规则是,如果对象具有对其他对象的有效引用,则对象可以调用其他对象的方法。如何为您的项目执行此操作将取决于您的代码。通常,我们将一个对象的引用作为方法或构造函数参数传递给另一个对象。例如,
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
public class FooMain {
public static void main(String[] args) {
FooNonGui nonGuiReference = new FooNonGui();
FooGui fooGui = new FooGui(nonGuiReference);
fooGui.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
fooGui.pack();
fooGui.setLocationRelativeTo(null);
fooGui.setVisible(true);
}
}
class FooGui extends JFrame implements ActionListener {
private FooNonGui nonGuiVariable;
private int counter = 0;
public FooGui(FooNonGui nonGuiParameter) {
super("GUI");
this.nonGuiVariable = nonGuiParameter;
JButton button = new JButton("Button");
button.addActionListener(this); // I hate doing this, but for brevity's sake...
add(button);
}
public void actionPerformed(ActionEvent e) {
nonGuiVariable.nonGuiMethod(counter);
counter++;
}
}
class FooNonGui {
public void nonGuiMethod(int counter) {
System.out.print("In non-GUI method. ");
System.out.println("counter is " + counter);
}
}
建议您向我们提供更多信息,以便我们更了解您的问题并为您提供更好的帮助。此链接可能有帮助:Smart Questions
编辑A:你要把你的行星添加到什么地方? SolarSystem 物体?无论是哪个类,都可能具有或应该具有公共(public) addPLanet(Planetplanet) 方法。如果是 SolarSystem,那么您需要将此对象的引用传递到 GUI 类中,类似于我上面所做的操作。
关于java - 如何将变量/对象从 Action 监听器传递到驱动程序类?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/5061258/