那就是问题所在..
这是我想要做的简化版本:
public class Class{
public void main(){
Vector<Boolean> boo=new Vector<Boolean>;
System.out.println("Hi all");
ArrayList<String> a=new ArrayList<String>()
a.add("hi");
a.add("all");
JRadioButtonExample b=new JRadioButtonExample(2,a);
boo=b.getCheck();
for(Boolean b:boo){
System.out.println(b);
}
}
}
我必须为GUI调用一个外部类。
问题是我无法与JRadioButtonExample中执行的操作同步地同步system.out.println。
JRadioButtonExample类如下:
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;
import java.util.Vector;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
public class JRadiobuttonExample extends JFrame {
static JCheckBox b[];
static Vector<Boolean> check=new Vector<Boolean>();
JButton altervista=new JButton("RUN");
JButton selectall=new JButton("select all");
JButton deselectall=new JButton("deselect all");
static int num;
int i=0;
public static JCheckBox[] getB() {
return b;
}
public void setB(JCheckBox[] b2) {
b = b2;
}
public Vector<Boolean> getCheck() {
return check;
}
public void setCheck(Vector<Boolean> check2) {
check = check2;
}
public JRadiobuttonExample(int num, ArrayList<String> lbl) {
super("JRadiobuttonExample");
getContentPane().setLayout(new FlowLayout(FlowLayout.LEADING));
b= new JCheckBox[num];
for(i=0; i<num; i++) {
//creo i bottoni
b[i] = new JCheckBox(lbl.get(i));
getContentPane().add(b[i]);
}
//adding buttons
getContentPane().add(selectall);
getContentPane().add(deselectall);
getContentPane().add(altervista);
//adding listeners
AscoltatoreSel asc1=new AscoltatoreSel();
selectall.addActionListener(asc1);
setVisible(true);
AscoltatoreDesel asc2=new AscoltatoreDesel();
deselectall.addActionListener(asc2);
setVisible(true);
Ascoltatore asc=new Ascoltatore();
altervista.addActionListener(asc);
setVisible(true);
this.pack();
}
class Ascoltatore extends WindowAdapter implements ActionListener{
public void windowClosing(WindowEvent e){
System.exit(0);
}
public void actionPerformed(ActionEvent e){
if(e.getSource()==altervista){
setVisible(false);
boh(b);
}
}
}
class AscoltatoreSel extends WindowAdapter implements ActionListener{
public void windowClosing(WindowEvent e){
System.exit(0);
}
public void actionPerformed(ActionEvent e){
if(e.getSource()==selectall){
for(i=0; i<num; i++) {
b[i].setSelected(true);
setVisible(true);
}
}
}
}
class AscoltatoreDesel extends WindowAdapter implements ActionListener{
public void windowClosing(WindowEvent e){
System.exit(0);
}
public void actionPerformed(ActionEvent e){
if(e.getSource()==deselectall){
for(i=0; i<num; i++) {
b[i].setSelected(false);
}
}
}
}
public static void boh(JCheckBox[] b){
JCheckBox[] buttons=getB();
for (JCheckBox c:buttons){
check.add(c.isSelected());
}
}
}
提前致谢!
ps。如果所有复选框都被选中,我需要获取boo = [true; true]
最佳答案
JRadioButtonExample
是Observable
,您的Class
是Observer
在JRadioButtonExample
中,应保留要在此对象的状态更改时通知的观察者的列表。您可以实现以下类似的方法,notifyObservers()
通知所有已注册的观察者。
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.beans.PropertyChangeListener;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Observer;
import java.util.Vector;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
public class JRadioButtonExample extends JFrame {
static JCheckBox b[];
static Vector<Boolean> check = new Vector<Boolean>();
JButton altervista = new JButton("RUN");
JButton selectall = new JButton("select all");
JButton deselectall = new JButton("deselect all");
static int num;
private ArrayList<PropertyChangeListener> listeners = new ArrayList<PropertyChangeListener>();
public static JCheckBox[] getB() {
return b;
}
public void setB(JCheckBox[] b2) {
b = b2;
}
public Vector<Boolean> getCheck() {
return check;
}
public void setCheck(Vector<Boolean> check2) {
check = check2;
}
public JRadioButtonExample(int num, ArrayList<String> lbl) {
super("JRadioButtonExample");
getContentPane().setLayout(new FlowLayout(FlowLayout.LEADING));
b = new JCheckBox[num];
for (int i = 0; i < num; i++) {
// creo i bottoni
b[i] = new JCheckBox(lbl.get(i));
getContentPane().add(b[i]);
}
// adding buttons
getContentPane().add(selectall);
getContentPane().add(deselectall);
getContentPane().add(altervista);
// adding listeners
AscoltatoreSel asc1 = new AscoltatoreSel();
selectall.addActionListener(asc1);
setVisible(true);
AscoltatoreDesel asc2 = new AscoltatoreDesel();
deselectall.addActionListener(asc2);
setVisible(true);
Ascoltatore asc = new Ascoltatore();
altervista.addActionListener(asc);
setVisible(true);
this.pack();
}
public void addPropertyChangeListener(PropertyChangeListener listener){
this.listeners.add(listener);
}
public void notifyObservers(){
for (Iterator iterator = listeners.iterator(); iterator.hasNext();) {
PropertyChangeListener name = (PropertyChangeListener) iterator
.next();
name.propertyChange(null);
}
}
class Ascoltatore extends WindowAdapter implements ActionListener {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() == altervista) {
setVisible(false);
boh(b);
}
notifyObservers();
}
}
class AscoltatoreSel extends WindowAdapter implements ActionListener {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() == selectall) {
for (int i = 0; i < num; i++) {
b[i].setSelected(true);
setVisible(true);
}
}
notifyObservers();
}
}
class AscoltatoreDesel extends WindowAdapter implements ActionListener {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() == deselectall) {
for (int i = 0; i < num; i++) {
b[i].setSelected(false);
}
}
notifyObservers();
}
}
public static void boh(JCheckBox[] b) {
JCheckBox[] buttons = getB();
for (JCheckBox c : buttons) {
check.add(c.isSelected());
}
}
}
您的
Class
应该实现PropertyChangeListener
,并且应该将自己注册为JRadioButtonExample
的所有侦听器。并实现
propertyChange(..)
方法,这就是您要print()的位置。import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.ArrayList;
import java.util.Vector;
public class Class implements PropertyChangeListener{
private JRadioButtonExample b;
public Class(JRadioButtonExample b){
this.b = b;
b.addPropertyChangeListener(this);
}
public static void main(String[] args){
ArrayList<String> a = new ArrayList<String>();
a.add("hi");
a.add("all");
JRadioButtonExample myButton = new JRadioButtonExample(2,a);
Class myClass = new Class(myButton);
}
@Override
public void propertyChange(PropertyChangeEvent evt) {
Vector<Boolean> boo = b.getCheck();
for(Boolean bool : boo){
System.out.println(bool);
}
}
}