【发布时间】：2014-04-19 03:28:37
【问题描述】：
我正在开发一个包含键盘的打字应用程序，但我发现调整空格按钮的大小以使其比其他按钮更宽有点困难。这就是我显示和组织布局的方式..
我可以调整整个按钮的大小，但这不是我想要的.. 重点是调整空格键的大小.. :)
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Arrays;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class example extends JFrame
{
//Individual keyboard rows
String firstRow[] = {"~","1","2","3","4","5","6","7","8","9","0","-","+","BackSpace"};
String secondRow[] = {"Tab","Q","W","E","R","T","Y","U","I","O","P","[","]","\\"};
String thirdRow[] = {"Caps","A","S","D","F","G","H","J","K","L",":","\"","Enter"};
String fourthRow[] = {"Shift","Z","X","C","V","B","N","M",",",".","?"," ^" };
String fifthRow[]={" " ,"<" ,"v",">" };
String strText = "";
//all keys without shift key press
String noShift="`1234567890-=qwertyuiop[]\\asdfghjkl;'zxcvbnm,./";
//special characters on keyboard that has to be addressed during key press
String specialChars ="~-+[]\\;',.?";
//Jbuttons corresponding to each individual rows
JButton first[];
JButton second[];
JButton third[];
JButton fourth[];
JButton fifth[];
//Driver main method to start the application
public static void main(String[] args) {
//launch typing tutor
new example().setVisible(true);
}
// No argument constructor to create frame
public example()
{
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//set size of the content pane ie frame
this.getContentPane().setPreferredSize(new Dimension(1200,275));
initWidgets();
}
// Method to initialize frame component
private void initWidgets()
{
//set the layout and place component in place and pack it
setLayout(new BorderLayout());
//Various panel for the layout
JPanel jpNorth = new JPanel();
JPanel jpCenter = new JPanel();
JPanel jpKeyboard = new JPanel();
JPanel jpNote = new JPanel();
add( jpNorth, BorderLayout.NORTH);
add( jpNote);
add( jpCenter, BorderLayout.CENTER);
add(jpKeyboard, BorderLayout.SOUTH);
//layout for keyboard
jpKeyboard.setLayout(new GridLayout(5,1));
//pack the components
pack();
//paint first keyboard row and add it to the keyboard
first = new JButton[firstRow.length];
//get the panel for the row
JPanel p = new JPanel(new GridLayout(1, firstRow.length));
for(int i = 0; i < firstRow.length; ++i)
{
JButton b= new JButton(firstRow[i]);
b.setPreferredSize(new Dimension(100,50));
first[i] = b;
p.add(first[i]);
}
jpKeyboard.add(p);
//paint second keyboard row and add it to the keyboard
second = new JButton[secondRow.length];
//get the panel for the row
p = new JPanel(new GridLayout(1, secondRow.length));
for(int i = 0; i < secondRow.length; ++i)
{
second[i] = new JButton(secondRow[i]);
p.add(second[i]);
}
jpKeyboard.add(p);
//paint third keyboard row and add it to the keyboard
third = new JButton[thirdRow.length];
//get the panel for the row
p = new JPanel(new GridLayout(1, thirdRow.length));
for(int i = 0; i < thirdRow.length; ++i)
{
third[i] = new JButton(thirdRow[i]);
p.add(third[i]);
}
jpKeyboard.add(p);
//paint fourth keyboard row and add it to the keyboard
fourth = new JButton[fourthRow.length];
//get the panel for the row
p = new JPanel(new GridLayout(1, fourthRow.length));
for(int i = 0; i < fourthRow.length; ++i)
{
fourth[i] = new JButton(fourthRow[i]);
p.add(fourth[i]);
if(i==fourthRow.length-2)
p.add(new JPanel());
}
p.add(new JPanel());
jpKeyboard.add(p);
//paint the fifth row
fifth = new JButton[fifthRow.length];
//get the panel for the row
p = new JPanel(new GridLayout(1, fifthRow.length));
//put empty panel for layout adjustments
for(int i = 0; i < 1; ++i)
{
JPanel spacePanel = new JPanel();
p.add(spacePanel);
}
//draw the buttons
for(int i = 0; i < fifthRow.length; ++i)
{
if(i==1) //space bar panel
{
JButton b = new JButton(fifthRow[i]);
b.setPreferredSize(new Dimension(400,10));
b.setBounds(10, 10, 600, 100);
fifth[i]=b;
//add empty panels for layout
p.add(new JPanel());p.add(new JPanel());p.add(new JPanel());p.add(new JPanel());p.add(new JPanel());p.add(new JPanel());p.add(new JPanel());p.add(new JPanel());
}
else
{
fifth[i]=new JButton(fifthRow[i]);
}
if(i==0) //first black panel
{
//place a black panel at first
JPanel spacePanel = new JPanel();
p.add(spacePanel);
}
p.add(fifth[i]);
}
jpKeyboard.add(p);
} //end of initWidgets
}//end of class
好吧，如果你们中的任何人可以指导我，我将非常感激，如果你们需要任何澄清或更多信息，请告诉我.. :)
【问题讨论】：
-
您应该在添加所有组件后打包框架
-
有一个可运行的示例来演示该问题，因为需要翻阅大量非上下文代码：P
-
@MadProgrammer 你的意思是发布整个程序？
-
不，我建议创建一个可运行的示例来演示您的问题，我们不需要它背后的任何功能
-
@MadProgrammer 刚刚添加了可运行的示例.. :)
标签： java swing keyboard jpanel awt