的Java Swing - 问题在插入组件的JTextPane
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21-09-2019 - |
题
下面给出的程序插入在按钮点击一个新的JTextArea。每当新的文本区域中插入新行。该计划是在Linux计算机上,但不能在Windows机器上正常工作。在Windows机器上它给我BadLocationException的。谁能告诉我这个问题的解决方案。由于事先。
import javax.swing.JTextArea;
import javax.swing.text.BadLocationException;
import javax.swing.text.StyledDocument;
public class TestPane extends javax.swing.JFrame {
/** Creates new form TestPane */
StyledDocument doc = null;
public TestPane() {
initComponents();
doc = jTextPane1.getStyledDocument();
//BoxLayout messageLayout = new BoxLayout(jScrollPane1,BoxLayout.PAGE_AXIS);
//jTextPane1.setLayout(messageLayout);
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jButton1 = new javax.swing.JButton();
jScrollPane1 = new javax.swing.JScrollPane();
jTextPane1 = new javax.swing.JTextPane();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setText("jButton1");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jScrollPane1.setViewportView(jTextPane1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(164, 164, 164)
.addComponent(jButton1))
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1,
javax.swing.GroupLayout.DEFAULT_SIZE, 376, Short.MAX_VALUE)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE,
286, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton1)
.addContainerGap(31, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jTextPane1.insertComponent(new JTextArea("hi this is StackOverflow "));
jTextPane1.revalidate();
insertEmptyLable();
}
private void insertEmptyLable() {
try {
doc.insertString
(jTextPane1.getText().length(), "\n",
null);
} catch (BadLocationException ex) {
ex.printStackTrace();
}
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new TestPane().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextPane jTextPane1;
// End of variables declaration
}
解决方案
你真的要做到insertComponent()
每次actionPerformed()
被调用?我会期待更多的东西是这样的:
private void insertMessage() {
try {
doc.insertString(jTextPane1.getText().length(),
"Hi, this is StackOverflow.\n", null);
} catch (BadLocationException ex) {
ex.printStackTrace();
}
}
附录:这与您的前面的问题比较同样的话题,你应该考虑是否要插入的文本的或的文本组件的滚动窗格。此外,NetBeans的GUI设计已相当成熟,但它并不太适合于短的例子。
不隶属于 StackOverflow