Java JScrollPane不会和gridbag一起进入JPanel
我的JScroll窗格包含一个Jlist,它的父对象是一个具有gridbag布局的JPanel,但它不想合适,它最终非常小,就像它的gridx是-1,y是零,而它的x应该是0,y应该是1 代码:Java JScrollPane不会和gridbag一起进入JPanel,java,swing,jscrollpane,layout-manager,gridbaglayout,Java,Swing,Jscrollpane,Layout Manager,Gridbaglayout,我的JScroll窗格包含一个Jlist,它的父对象是一个具有gridbag布局的JPanel,但它不想合适,它最终非常小,就像它的gridx是-1,y是零,而它的x应该是0,y应该是1 代码: 公共类StartGui { 私有静态JFrame=新JFrame(“”); 私有静态JPanel panel=newjpanel(); 私有静态JMenuBar菜单=新JMenuBar(); 私有静态DefaultListModel listModel=新DefaultListModel(); 私有静态
公共类StartGui
{
私有静态JFrame=新JFrame(“”);
私有静态JPanel panel=newjpanel();
私有静态JMenuBar菜单=新JMenuBar();
私有静态DefaultListModel listModel=新DefaultListModel();
私有静态JList目标=新JList(listModel);
私有静态JButton Start=新JButton(“Start”);
私有静态JButton Stop=新JButton(“Stop”);
私有静态JButton Configure=新JButton(“Configure”);
私有静态JButton AddRecipiants=新JButton(“AddRecipiants”);
private static JProgressBar Progress=new JProgressBar();
私有静态JLabel RLable=新JLabel(“Recipients:”);
私有静态JScrollPane lsp;
私有静态GridBagLayout gbl=新GridBagLayout();
私有静态GridBagConstraints gbc=新GridBagConstraints();
私有静态JFrame电子邮件=新JFrame();
私有静态JPanel panel2=新的JPanel();
私有静态JTextArea emailA=新JTextArea(“在此处键入电子邮件”);
私有静态JButton done=新JButton(“确定”);
公共静态void main(字符串[]args)
{
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setJMenuBar(菜单);
frame.setresizeable(false);
机架立根(0,0,500,400);
面板设置布局(gbl);
listModel.addElement(“TestEmailAddress@fake.com");
lsp=新的JScrollPane(目标);
emails.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
电子邮件。可设置大小(错误);
电子邮件。挫折(0,0,200,300);
面板2.设置布局(gbl);
电子邮件。添加(第2组);
gbc.gridx=0;
gbc.gridy=17;
gbc.gridwidth=20;
gbc.gridheight=3;
gbc.fill=GridBagConstraints.BOTH;
gbc.weightx=1;
gbc.weighty=0;
gbc.anchor=gridbag.NORTH;
gbc.插图=新插图(5,70,5,70);
gbl.setConstraints(完成,gbc);
第2组:添加(完成);
gbc.gridx=0;
gbc.gridy=0;
gbc.gridwidth=20;
gbc.gridheight=17;
gbc.fill=GridBagConstraints.BOTH;
gbc.weightx=1;
gbc.weighty=1;
gbc.anchor=gridbag.NORTH;
gbc.插图=新插图(10,10,0,10);
gbl.setConstraints(emailA,gbc);
第2组。添加(emailA);
电子邮件。添加(第2组);
gbc.gridx=0;
gbc.gridy=1;
gbc.gridwidth=10;
gbc.gridheight=19;
gbc.fill=GridBagConstraints.BOTH;
gbc.weightx=1;
gbc.weighty=1;
gbc.anchor=GridBagConstraints.WEST;
gbc.插图=新插图(5,5,5,5);
gbl.setConstraints(目标,gbc);
添加面板(lsp);
gbc.gridx=10;
gbc.gridy=11;
gbc.gridwidth=5;
gbc.gridheight=5;
gbc.fill=GridBagConstraints.BOTH;
gbc.weightx=1;
gbc.weighty=1;
gbc.anchor=GridBagConstraints.CENTER;
gbc.插图=新插图(25,5,25,5);
gbl.setConstraints(开始,gbc);
面板。添加(开始);
gbc.gridx=15;
gbc.gridy=11;
gbc.gridwidth=5;
gbc.gridheight=5;
gbc.fill=GridBagConstraints.BOTH;
gbc.weightx=1;
gbc.weighty=1;
gbc.anchor=GridBagConstraints.CENTER;
gbc.插图=新插图(25,5,25,5);
gbl.设置约束(停止,gbc);
面板。添加(停止);
gbc.gridx=10;
gbc.gridy=4;
gbc.gridwidth=10;
gbc.gridheight=7;
gbc.fill=GridBagConstraints.BOTH;
gbc.weightx=1;
gbc.weighty=1;
gbc.anchor=GridBagConstraints.CENTER;
gbc.插图=新插图(35,5,40,5);
gbl.setConstraints(配置,gbc);
panel.add(配置);
gbc.gridx=10;
gbc.gridy=0;
gbc.gridwidth=10;
gbc.gridheight=4;
gbc.fill=GridBagConstraints.BOTH;
gbc.weightx=1;
gbc.weighty=1;
gbc.anchor=GridBagConstraints.CENTER;
gbc.插图=新插图(25,5,20,5);
gbl.setConstraints(addRecipients,gbc);
panel.add(addRecipients);
进度。设定最大值(100);
进度。设置字符串(“0%”;
进度。设置值(0);
gbc.gridx=10;
gbc.gridy=16;
gbc.gridwidth=10;
gbc.gridheight=4;
gbc.fill=GridBagConstraints.BOTH;
gbc.weightx=1;
gbc.weighty=1;
gbc.anchor=GridBagConstraints.CENTER;
gbc.插图=新插图(25,5,15,5);
gbl.setConstraints(进度,gbc);
小组.增补(进度);
gbc.gridx=0;
gbc.gridy=0;
gbc.gridwidth=10;
gbc.gridheight=1;
gbc.fill=GridBagConstraints.BOTH;
gbc.weightx=1;
gbc.weighty=1;
gbc.anchor=GridBagConstraints.CENTER;
gbc.插图=新插图(5,45,0,45);
gbl.setConstraints(RLable,gbc);
面板。添加(RLable);
框架。添加(面板);
frame.setVisible(true);
}
首选的JScrollPane
大小通常不是很大,通常是通过可滚动的
界面(以及其他因素)确定的
您可以使用以下方法影响JList
的默认大小
JList
),这将不起作用
你应该这样做
panel.add(lsp, gbc);
我会极力劝阻
gbl.setConstraints(Targets, gbc);
(我应该补充一点,我通常不鼓励使用上述方法,并建议使用add(Component,Object)
——但这就是我)
已更新
我的建议,与您的默认代码相比
public class BadLayout10 {
public static void main(String[] args) {
new BadLayout10();
}
public BadLayout10() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception ex) {
}
new StartGui();
}
});
}
public class StartGui {
private JFrame frame = new JFrame("");
private JPanel panel = new JPanel();
private JMenuBar menu = new JMenuBar();
private DefaultListModel<String> listModel = new DefaultListModel<String>();
private JList<String> Targets = new JList<String>(listModel);
private JButton Start = new JButton("Start");
private JButton Stop = new JButton("Stop");
private JButton Configure = new JButton("Configure");
private JButton AddRecipiants = new JButton("Add Recipiants");
private JProgressBar Progress = new JProgressBar();
private JLabel RLable = new JLabel("Recipiants:");
private JScrollPane lsp;
private GridBagLayout gbl = new GridBagLayout();
private GridBagConstraints gbc = new GridBagConstraints();
private JFrame emails = new JFrame();
private JPanel panel2 = new JPanel();
private JTextArea emailA = new JTextArea("type email here");
private JButton done = new JButton("OK");
public StartGui() {
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setJMenuBar(menu);
frame.setResizable(false);
frame.setBounds(0, 0, 500, 400);
panel.setLayout(gbl);
listModel.addElement("TestEmailAddress@fake.com");
Targets.setVisibleRowCount(10);
Targets.setPrototypeCellValue("This is a really long test string");
lsp = new JScrollPane(Targets);
emails.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
emails.setResizable(false);
emails.setBounds(0, 0, 200, 300);
panel2.setLayout(gbl);
emails.add(panel2);
gbc.gridx = 0;
gbc.gridy = 17;
gbc.gridwidth = 20;
gbc.gridheight = 3;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 0;
gbc.anchor = GridBagConstraints.NORTH;
gbc.insets = new Insets(5, 70, 5, 70);
gbl.setConstraints(done, gbc);
panel2.add(done);
gbc.gridx = 0;
gbc.gridy = 0;
gbc.gridwidth = 20;
gbc.gridheight = 17;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.NORTH;
gbc.insets = new Insets(10, 10, 0, 10);
gbl.setConstraints(emailA, gbc);
panel2.add(emailA);
emails.add(panel2);
gbc.gridx = 0;
gbc.gridy = 1;
gbc.gridwidth = 10;
gbc.gridheight = 19;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.WEST;
gbc.insets = new Insets(5, 5, 5, 5);
// gbl.setConstraints(Targets, gbc);
panel.add(lsp, gbc);
gbc.gridx = 10;
gbc.gridy = 11;
gbc.gridwidth = 5;
gbc.gridheight = 5;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.insets = new Insets(25, 5, 25, 5);
gbl.setConstraints(Start, gbc);
panel.add(Start);
gbc.gridx = 15;
gbc.gridy = 11;
gbc.gridwidth = 5;
gbc.gridheight = 5;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.insets = new Insets(25, 5, 25, 5);
gbl.setConstraints(Stop, gbc);
panel.add(Stop);
gbc.gridx = 10;
gbc.gridy = 4;
gbc.gridwidth = 10;
gbc.gridheight = 7;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.insets = new Insets(35, 5, 40, 5);
gbl.setConstraints(Configure, gbc);
panel.add(Configure);
gbc.gridx = 10;
gbc.gridy = 0;
gbc.gridwidth = 10;
gbc.gridheight = 4;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.insets = new Insets(25, 5, 20, 5);
gbl.setConstraints(AddRecipiants, gbc);
panel.add(AddRecipiants);
Progress.setMaximum(100);
Progress.setString("0%");
Progress.setValue(0);
gbc.gridx = 10;
gbc.gridy = 16;
gbc.gridwidth = 10;
gbc.gridheight = 4;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.insets = new Insets(25, 5, 15, 5);
gbl.setConstraints(Progress, gbc);
panel.add(Progress);
gbc.gridx = 0;
gbc.gridy = 0;
gbc.gridwidth = 10;
gbc.gridheight = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.insets = new Insets(5, 45, 0, 45);
gbl.setConstraints(RLable, gbc);
panel.add(RLable);
frame.add(panel);
frame.setVisible(true);
}
}
}
公共类BadLayout10{
公共静态void main(字符串[]args){
新的布局10();
}
公共广告版面10(){
invokeLater(新的Runnable(){
@凌驾
公开募捐{
试一试{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName())
public class BadLayout10 {
public static void main(String[] args) {
new BadLayout10();
}
public BadLayout10() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception ex) {
}
new StartGui();
}
});
}
public class StartGui {
private JFrame frame = new JFrame("");
private JPanel panel = new JPanel();
private JMenuBar menu = new JMenuBar();
private DefaultListModel<String> listModel = new DefaultListModel<String>();
private JList<String> Targets = new JList<String>(listModel);
private JButton Start = new JButton("Start");
private JButton Stop = new JButton("Stop");
private JButton Configure = new JButton("Configure");
private JButton AddRecipiants = new JButton("Add Recipiants");
private JProgressBar Progress = new JProgressBar();
private JLabel RLable = new JLabel("Recipiants:");
private JScrollPane lsp;
private GridBagLayout gbl = new GridBagLayout();
private GridBagConstraints gbc = new GridBagConstraints();
private JFrame emails = new JFrame();
private JPanel panel2 = new JPanel();
private JTextArea emailA = new JTextArea("type email here");
private JButton done = new JButton("OK");
public StartGui() {
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setJMenuBar(menu);
frame.setResizable(false);
frame.setBounds(0, 0, 500, 400);
panel.setLayout(gbl);
listModel.addElement("TestEmailAddress@fake.com");
Targets.setVisibleRowCount(10);
Targets.setPrototypeCellValue("This is a really long test string");
lsp = new JScrollPane(Targets);
emails.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
emails.setResizable(false);
emails.setBounds(0, 0, 200, 300);
panel2.setLayout(gbl);
emails.add(panel2);
gbc.gridx = 0;
gbc.gridy = 17;
gbc.gridwidth = 20;
gbc.gridheight = 3;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 0;
gbc.anchor = GridBagConstraints.NORTH;
gbc.insets = new Insets(5, 70, 5, 70);
gbl.setConstraints(done, gbc);
panel2.add(done);
gbc.gridx = 0;
gbc.gridy = 0;
gbc.gridwidth = 20;
gbc.gridheight = 17;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.NORTH;
gbc.insets = new Insets(10, 10, 0, 10);
gbl.setConstraints(emailA, gbc);
panel2.add(emailA);
emails.add(panel2);
gbc.gridx = 0;
gbc.gridy = 1;
gbc.gridwidth = 10;
gbc.gridheight = 19;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.WEST;
gbc.insets = new Insets(5, 5, 5, 5);
// gbl.setConstraints(Targets, gbc);
panel.add(lsp, gbc);
gbc.gridx = 10;
gbc.gridy = 11;
gbc.gridwidth = 5;
gbc.gridheight = 5;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.insets = new Insets(25, 5, 25, 5);
gbl.setConstraints(Start, gbc);
panel.add(Start);
gbc.gridx = 15;
gbc.gridy = 11;
gbc.gridwidth = 5;
gbc.gridheight = 5;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.insets = new Insets(25, 5, 25, 5);
gbl.setConstraints(Stop, gbc);
panel.add(Stop);
gbc.gridx = 10;
gbc.gridy = 4;
gbc.gridwidth = 10;
gbc.gridheight = 7;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.insets = new Insets(35, 5, 40, 5);
gbl.setConstraints(Configure, gbc);
panel.add(Configure);
gbc.gridx = 10;
gbc.gridy = 0;
gbc.gridwidth = 10;
gbc.gridheight = 4;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.insets = new Insets(25, 5, 20, 5);
gbl.setConstraints(AddRecipiants, gbc);
panel.add(AddRecipiants);
Progress.setMaximum(100);
Progress.setString("0%");
Progress.setValue(0);
gbc.gridx = 10;
gbc.gridy = 16;
gbc.gridwidth = 10;
gbc.gridheight = 4;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.insets = new Insets(25, 5, 15, 5);
gbl.setConstraints(Progress, gbc);
panel.add(Progress);
gbc.gridx = 0;
gbc.gridy = 0;
gbc.gridwidth = 10;
gbc.gridheight = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.CENTER;
gbc.insets = new Insets(5, 45, 0, 45);
gbl.setConstraints(RLable, gbc);
panel.add(RLable);
frame.add(panel);
frame.setVisible(true);
}
}
}