Substance
IntelliJ IDEA
Swing
java
先来看看出现报错的代码：package chapter4;import com.sun.java.swing.plaf.windows.WindowsProgressBarUI;import org.jvnet.substance.skin.SubstanceBusinessBlackSteelLookAndFeel;import javax.swing.*;import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.util.concurrent.TimeUnit;/*** Created by MyWorld on 2016/3/24.*/public class SwingJProgressBarDemo { public static void main(String[] args) throws UnsupportedLookAndFeelException { UIManager.setLookAndFeel(new SubstanceBusinessBlackSteelLookAndFeel()); JFrame.setDefaultLookAndFeelDecorated(true); JFrame frame = new JFrame('JProgressBarDemo'); frame.setSize(400, 200); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLayout(new FlowLayout()); final JProgressBar progressBar = new JProgressBar(); progressBar.setOrientation(JProgressBar.HORIZONTAL); progressBar.setSize(200, 100); progressBar.setMinimum(0); progressBar.setMaximum(100); progressBar.setStringPainted(true); progressBar.setUI(new WindowsProgressBarUI()); frame.add(progressBar); JButton btn = new JButton('Start ProgressBar'); btn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { for (int i = 0; i <= 10; i++) { progressBar.setValue(i * 10); try { TimeUnit.SECONDS.sleep(1); } catch (InterruptedException e1) { e1.printStackTrace(); } } } }); } }); frame.add(btn); frame.setLocationRelativeTo(null); frame.setVisible(true); }}
执行上面的代码报错了：org.jvnet.substance.api.UiThreadingViolationException: Component creation must be done on Event Dispatch Thread at org.jvnet.substance.utils.SubstanceCoreUtilities.testComponentCreationThreadingViolation(SubstanceCoreUtilities.java:2368) at org.jvnet.substance.SubstancePanelUI.createUI(SubstancePanelUI.java:57) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:57) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:260) at javax.swing.UIDefaults.getUI(UIDefaults.java:754) at javax.swing.UIManager.getUI(UIManager.java:989) at javax.swing.JPanel.updateUI(JPanel.java:109) at javax.swing.JPanel.
从报错上看是因为直接在UI线程中初始化控件导致的：org.jvnet.substance.api.UiThreadingViolationException: Component creation must be done on Event Dispatch Thread
把初始化Swing组件的代码都写到SwingUtilities.invokeLater后面的Runnable实例中更改后的代码如下：SwingUtilities.invokeLater(new Runnable() { @Override public void run() { final JFrame frame = new JFrame('JProgressBarDemo'); frame.setSize(400, 200); frame.setLocationRelativeTo(null); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLayout(new FlowLayout()); final JProgressBar progressBar = new JProgressBar(); progressBar.setOrientation(JProgressBar.HORIZONTAL); progressBar.setSize(200, 100); progressBar.setMinimum(0); progressBar.setMaximum(100); progressBar.setStringPainted(true); progressBar.setUI(new WindowsProgressBarUI()); frame.add(progressBar); JButton btn = new JButton('Start ProgressBar'); btn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { new Thread((new Runnable() { @Override public void run() { for (int i = 0; i <= 10; i++) { progressBar.setValue(i * 10); try { TimeUnit.SECONDS.sleep(1); } catch (InterruptedException e1) { e1.printStackTrace(); } } } })).start(); } }); frame.add(btn); frame.setVisible(true); }});
运行下看看
换个皮肤执行下看看效果不错OCode:UIManager.setLookAndFeel(new SubstanceAutumnLookAndFeel());