Java 按钮未显示在正确的位置
如何使按钮显示在文本区域下方的行上Java 按钮未显示在正确的位置,java,swing,button,layout,layout-manager,Java,Swing,Button,Layout,Layout Manager,如何使按钮显示在文本区域下方的行上 //Imports import java.awt.CardLayout; import java.awt.Color; import java.awt.Component; import java.awt.Insets; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.BorderFactory; import javax.
//Imports
import java.awt.CardLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextPane;
public class ProfessorPhysInstall {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
//Variables
final JFrame mainframe = new JFrame();
mainframe.setSize(500, 435);
final JPanel cards = new JPanel(new CardLayout());
final CardLayout cl = (CardLayout)(cards.getLayout());
mainframe.setTitle("Future Retro Gaming Launcher");
//Screen1
JPanel screen1 = new JPanel();
JTextPane TextPaneScreen1 = new JTextPane();
TextPaneScreen1.setEditable(false);
TextPaneScreen1.setBackground(new java.awt.Color(240, 240, 240));
TextPaneScreen1.setText("Welcome to the install wizard for Professor Phys!\n\nPlease agree to the following terms and click the next button to continue.");
TextPaneScreen1.setSize(358, 48);
TextPaneScreen1.setLocation(0, 0);
TextPaneScreen1.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createLineBorder(Color.black),BorderFactory.createEmptyBorder(5, 5, 5, 5)));
TextPaneScreen1.setMargin(new Insets(4,4,4,4));
screen1.add(TextPaneScreen1);
JTextArea TextAreaScreen1 = new JTextArea();
JScrollPane sbrText = new JScrollPane(TextAreaScreen1);
TextAreaScreen1.setRows(15);
TextAreaScreen1.setColumns(40);
TextAreaScreen1.setEditable(false);
TextAreaScreen1.setText("Lots of text");
TextAreaScreen1.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createLineBorder(Color.black),BorderFactory.createEmptyBorder(5, 5, 5, 5)));
TextAreaScreen1.setMargin(new Insets(4,4,4,4));
screen1.add(sbrText);
final JCheckBox Acceptance = new JCheckBox();
Acceptance.setText("I Accept The EULA Agreenment.");
screen1.add(Acceptance);
final JButton NextScreen1 = new JButton();
NextScreen1.setText("Next");
NextScreen1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
if(Acceptance.isSelected())
cl.next(cards);
}
});
screen1.add(NextScreen1);
JButton CancelScreen1 = new JButton();
CancelScreen1.setText("Cancel");
CancelScreen1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
System.exit(0);
}
});
screen1.add(CancelScreen1);
cards.add(screen1);
//Screen2
JPanel screen2 = new JPanel();
JTextPane TextPaneScreen2 = new JTextPane();
TextPaneScreen2.setEditable(false);
TextPaneScreen2.setBackground(new java.awt.Color(240, 240, 240));
TextPaneScreen2.setText("Please select the Future Retro Gaming Launcher.");
TextPaneScreen2.setSize(358, 48);
TextPaneScreen2.setLocation(0, 0);
TextPaneScreen2.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createLineBorder(Color.black),BorderFactory.createEmptyBorder(5, 5, 5, 5)));
TextPaneScreen2.setMargin(new Insets(4,4,4,4));
screen2.add(TextPaneScreen2);
final JButton BackScreen2 = new JButton();
BackScreen2.setText("Back");
BackScreen2.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
if(Acceptance.isSelected())
cl.previous(cards);
}
});
screen2.add(BackScreen2);
final JButton NextScreen2 = new JButton();
NextScreen2.setText("Next");
NextScreen2.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
if(Acceptance.isSelected())
cl.next(cards);
}
});
screen2.add(NextScreen2);
JButton CancelScreen2 = new JButton();
CancelScreen2.setText("Cancel");
CancelScreen2.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
System.exit(0);
}
});
screen2.add(CancelScreen2);
cards.add(screen2);
mainframe.add(cards);
mainframe.setVisible(true);
}
}
这就是它看起来的样子
使用合适的
您已将所有组件添加到screen2
中,默认情况下,该屏幕具有FlowLayout
。有很多不同的方法来实现你的目标
更多阅读:JPanel的默认布局管理器是。顾名思义,它只是一个接一个地传递组件 您将需要尝试一个不同的布局管理器,类似的东西将做您想要的,但它是一个复杂的布局。您最好尝试使用复合布局来实现相同的效果 也就是说,将UI分解为小块,并为每个组应用不同的布局管理器 退房
你可能还想考虑把每个屏幕都分解成它自己的类,它所代表的代码很难阅读和理解——IMHO/
通常的方法是结合所需的外观布局。例如
import java.awt.*;
import javax.swing.*;
public class ProfessorPhysInstall {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
//Variables
final JFrame mainframe = new JFrame();
mainframe.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
mainframe.setSize(500, 435);
final JPanel cards = new JPanel(new BorderLayout());
mainframe.setTitle("Future Retro Gaming Launcher");
//Screen2
JPanel screen2 = new JPanel();
JTextPane TextPaneScreen2 = new JTextPane();
TextPaneScreen2.setText("Please select the Future Retro Gaming Launcher.");
// set the preferred size, rather than the size!
//TextPaneScreen2.setSize(358, 48);
TextPaneScreen2.setPreferredSize(new Dimension(358, 48));
TextPaneScreen2.setBorder(
BorderFactory.createCompoundBorder(
BorderFactory.createLineBorder(Color.black),
BorderFactory.createEmptyBorder(5, 5, 5, 5)));
TextPaneScreen2.setMargin(new Insets(4,4,4,4));
screen2.add(TextPaneScreen2);
JPanel buttons = new JPanel(new FlowLayout(FlowLayout.CENTER, 5,5));
final JButton BackScreen2 = new JButton();
BackScreen2.setText("Back");
buttons.add(BackScreen2);
final JButton NextScreen2 = new JButton("Next");
buttons.add(NextScreen2);
JButton CancelScreen2 = new JButton("Cancel");
buttons.add(CancelScreen2);
cards.add(screen2, BorderLayout.PAGE_START);
cards.add(buttons, BorderLayout.PAGE_END);
mainframe.add(cards);
mainframe.pack();
mainframe.setVisible(true);
}
}
提示
pack()
不要在这里以外的任何地方发布你的代码,并解释你自己试图解决的问题。这不是调试服务。如果出现意外情况,我们可以提供帮助。但如果只是为了找到你错过的一件非常具体的事情,那么它不太可能帮助其他人,因此不适合这个网站。好吧,很抱歉。代码非常长,所以我认为它更容易阅读。基本上我不知道该怎么办。第一屏(第1屏)一切都很完美。但现在我“我得到的按钮不是他们自己的线路。我试着增加一个边距,但我认为这与空间被填满有关。似乎如果没有足够的空间来放置按钮,它会转到下一行。+1表示到达first@MadProgrammer:哈哈。这对我来说确实是一个罕见的壮举。而且它不会弄乱卡片的布局?还有,你有没有建议的布局?就我个人而言,我会制作一个GridBag lickey split,但对于初学者来说,这不是最容易使用的。或者使用BorderLayout,您可以将文本区域放在北部或中部(我不确定您到底在追求什么),并将另一个包含按钮的面板放在南部。+1表示迫切需要的代码约定链接。+1表示只制作代码的开头和结尾:P@MadProgrammer我认为这是一个值得的挑战,因为我早上还没有喝到咖啡因