通过线程交互更改 Eclipse 中的标签图标
我目前正在开发一个交互式用户界面,它会向您显示是否打开了温室系统的水或照明组件。
当从另一个窗口单击按钮时,我遇到了相当大的挑战,该按钮将其标志值传递给线程类,这反过来又使图标更改
控制器 - > >线程逻辑-> NewSim
这里是我在 UI 窗口中使用的一些示例测试代码 我还是一个初学者,所以我使用 Eclipse 自动生成的代码,
粘贴代码似乎存在一些问题,
这是我用来修改标志值的测试代码片段
ThreadLogic
while(!t.interrupted()){
sim = new NewSim();
try {
sim.setLightStatus(1);
System.out.println("flag is 1");
t.sleep(5000);
sim.setLightStatus(0);
System.out.println("flag is 0");
t.sleep(5000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
新模拟
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import org.dyno.visual.swing.layouts.Constraints;
import org.dyno.visual.swing.layouts.GroupLayout;
import org.dyno.visual.swing.layouts.Leading;
//VS4E -- DO NOT REMOVE THIS LINE!
public class NewSim extends JFrame {
private static final long serialVersionUID = 1L;
protected JLabel water;
protected JLabel light;
Icon waterIcon = null;
Icon lightIcon = null;
private int lightFlag = 0;
private JPanel iconPane;
private static final String PREFERRED_LOOK_AND_FEEL = "javax.swing.plaf.metal.MetalLookAndFeel";
public NewSim() {
initComponents();
}
private void initComponents() {
setLayout(new GroupLayout());
add(getIconPane(), new Constraints(new Leading(4, 313, 10, 10), new Leading(4, 232, 10, 10)));
setSize(320, 240);
}
private JPanel getIconPane() {
if (iconPane == null) {
iconPane = new JPanel();
iconPane.setLayout(new GroupLayout());
iconPane.add(getWaterLabel(), new Constraints(new Leading(163, 10, 10), new Leading(79, 12, 12)));
iconPane.add(getLightLabel(), new Constraints(new Leading(115, 12, 12), new Leading(79, 12, 12)));
}
return iconPane;
}
private JLabel getLightLabel() {
if (light == null) {
light = new JLabel();
System.out.println(this.lightFlag);
setLightStatus(0);
}
return light;
}
private JLabel getWaterLabel() {
if (water == null) {
water = new JLabel();
water.setIcon(new ImageIcon(getClass().getResource("/images/wateroff.png")));
}
return water;
}
public void setLightStatus(int lightFlag2) {
// TODO Auto-generated method stub
this.lightFlag = lightFlag2;
switch(this.lightFlag){
case 0: System.out.println("case 0");
light.setIcon(new ImageIcon(getClass().getResource("/images/lightoff.png")));
light.revalidate();
break;
case 1: System.out.println("case 0");
light.setIcon(new ImageIcon(getClass().getResource("/images/lighton.png")));
light.revalidate();
break;
}
}
}
I'm currently developing an interactive UI which shows you if you turned on a water or lighting component of a greenhouse system.
I am having quite a challenge in making the label icons change when a button is clicked from another window which passes its flag values to a thread class, which, in turn makes the icon change
Controller -> ThreadLogic -> NewSim
here are some sample test codes i used in the UI window
i'm still a beginner so I am using the auto-generated codes from eclipse
there seems to be some problem with pasting the code
this is the test code snippet I use to modify the flag values
ThreadLogic
while(!t.interrupted()){
sim = new NewSim();
try {
sim.setLightStatus(1);
System.out.println("flag is 1");
t.sleep(5000);
sim.setLightStatus(0);
System.out.println("flag is 0");
t.sleep(5000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
NewSim
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import org.dyno.visual.swing.layouts.Constraints;
import org.dyno.visual.swing.layouts.GroupLayout;
import org.dyno.visual.swing.layouts.Leading;
//VS4E -- DO NOT REMOVE THIS LINE!
public class NewSim extends JFrame {
private static final long serialVersionUID = 1L;
protected JLabel water;
protected JLabel light;
Icon waterIcon = null;
Icon lightIcon = null;
private int lightFlag = 0;
private JPanel iconPane;
private static final String PREFERRED_LOOK_AND_FEEL = "javax.swing.plaf.metal.MetalLookAndFeel";
public NewSim() {
initComponents();
}
private void initComponents() {
setLayout(new GroupLayout());
add(getIconPane(), new Constraints(new Leading(4, 313, 10, 10), new Leading(4, 232, 10, 10)));
setSize(320, 240);
}
private JPanel getIconPane() {
if (iconPane == null) {
iconPane = new JPanel();
iconPane.setLayout(new GroupLayout());
iconPane.add(getWaterLabel(), new Constraints(new Leading(163, 10, 10), new Leading(79, 12, 12)));
iconPane.add(getLightLabel(), new Constraints(new Leading(115, 12, 12), new Leading(79, 12, 12)));
}
return iconPane;
}
private JLabel getLightLabel() {
if (light == null) {
light = new JLabel();
System.out.println(this.lightFlag);
setLightStatus(0);
}
return light;
}
private JLabel getWaterLabel() {
if (water == null) {
water = new JLabel();
water.setIcon(new ImageIcon(getClass().getResource("/images/wateroff.png")));
}
return water;
}
public void setLightStatus(int lightFlag2) {
// TODO Auto-generated method stub
this.lightFlag = lightFlag2;
switch(this.lightFlag){
case 0: System.out.println("case 0");
light.setIcon(new ImageIcon(getClass().getResource("/images/lightoff.png")));
light.revalidate();
break;
case 1: System.out.println("case 0");
light.setIcon(new ImageIcon(getClass().getResource("/images/lighton.png")));
light.revalidate();
break;
}
}
}
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在 Swing 中,您不能在事件调度线程 (EDT) 之外的任何其他线程中创建或修改 swing 组件。
因此,应在 EDT 中执行以下几行:
使用 SwingUtilities.invokeLater() 在 EDT 而不是当前(非 EDT)线程中执行某些代码。并阅读所有 swing 组件的 Javadoc 中存在的警告: http://download.oracle.com/javase/6/docs/api/javax/swing/package-summary.html#threading
In Swing, you can't create or modify a swing component in any othe thread than the Event Dispatch Thread (EDT).
The following lines should thus be executed in the EDT :
Use SwingUtilities.invokeLater() to execute some code in the EDT rather than the current (non-EDT) thread. And read the warning present in the Javadoc of all the swing components : http://download.oracle.com/javase/6/docs/api/javax/swing/package-summary.html#threading