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panel背景图片

发布时间: 2023-07-27 11:10:53

㈠ java panel设置背景图片

要在panel上面加图片，需要重写paint方法，那样就麻烦了，JLabel有现成的设置方法；
JLabel l=new JLabel();
Icon icon=new ImageIcon("D:\\a.jpg"); //在此直接创建对象
l.setIcon(icon);
然后把你原来放在panel上的东西放在JLabel上面，再把JLabel放在panel上面就可以了

㈡ java中swing界面上怎么给jpanel上添加背景图片

//重写JPanel的这个方法就可以了
@Override
publicvoidpaintComponent(Graphicsgs){
Graphics2Dg=(Graphics2D)gs;
super.paintComponent(g);
//画背景图片
Imageimage=Toolkit.getDefaultToolkit().getImage(getClass().getResource(imgPath));
g.drawImage(image,0,0,width,height,this);
}

一个完整的代码:

packagetest;

importjava.awt.Graphics;
importjava.awt.Image;
importjava.net.URL;

importjavax.swing.ImageIcon;
importjavax.swing.JFrame;
importjavax.swing.JPanel;

//为窗口添加背景图片
publicclassJFrameBackground{

	privateJFrameframe=newJFrame("带背景图片的JFrame");
	privateJPanelimagePanel;
	privateImageIconbackgroundimg;

	publicJFrameBackground(){

		imagePanel=newJPanel(){
			@Override
			protectedvoidpaintComponent(Graphicsg){
				super.paintComponent(g);
				URLlocation=this.getClass().getResource("grapes.gif");
				backgroundimg=newImageIcon(location);
				Imageimg=backgroundimg.getImage();
				g.drawImage(img,0,0,backgroundimg.getIconWidth(),
						backgroundimg.getIconHeight(),
						backgroundimg.getImageObserver());
				frame.setSize(backgroundimg.getIconWidth(),
						backgroundimg.getIconHeight());
			}

		};

		frame.add(imagePanel);
		frame.setVisible(true);
		frame.pack();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}

	publicstaticvoidmain(String[]args){
		newJFrameBackground();
	}
}

这是运行的一个截图:

参考网址:

http://www.linuxidc.com/Linux/2011-08/41689.htm 两种设置背景的方法

http://blog.csdn.net/one_and_only4711/article/details/6594770 动态改变背景大小

㈢ java中jpanel的背景图片问题

写一个ImageJPanel类继承自JPanel,在paintComponent方法中用g.drawImage绘制Image背景图片就挡不着第一张卡片上的四个按钮了。

完整的程序如下：(注意把背景图片的路径换成你的背景图片路径)

importjava.awt.CardLayout;
importjava.awt.Color;
importjava.awt.Graphics;
importjava.awt.GridLayout;
importjava.awt.Image;
importjava.awt.Toolkit;
importjava.awt.event.ActionEvent;
importjava.awt.event.ActionListener;
importjavax.swing.JButton;
importjavax.swing.JFrame;
importjavax.swing.JPanel;
importjavax.swing.JSplitPane;
{
=1L;
JPaneljp1=newJPanel();
JPaneltmpjp1=newJPanel();
JPaneljp2=newJPanel();
JPanelcard_jp1=newJPanel();
JPanelcard_jp2=newJPanel();
JPanelcard_jp3=newJPanel();
JPanelcard_jp4=newJPanel();
JButtonjb1=newJButton("按钮1");
JButtonjb2=newJButton("按钮2");
JButtonjb3=newJButton("按钮3");
JButtonjb4=newJButton("按钮4");
JSplitPanejsp=newJSplitPane(JSplitPane.HORIZONTAL_SPLIT,jp1,jp2);
CardLayoutcl=newCardLayout();
intj=1;
D(){
tmpjp1.setLayout(newGridLayout(4,1,5,5));
tmpjp1.add(jb1);tmpjp1.add(jb2);tmpjp1.add(jb3);tmpjp1.add(jb4);
jp1.add(tmpjp1);
jp2.setLayout(cl);
JPanelp[]=newJPanel[4];
p[0]=newImageJPanel();
jp2.add(p[0],String.valueOf(0));
for(inti=1;i<4;i++){
p[i]=newJPanel();
jp2.add(p[i],String.valueOf(i));
}
JButtonb[]=newJButton[4];
for(inti=1;i<4;i++){
inta=i+1;
b[i]=newJButton("第"+a+"页,下一页");
b[i].addActionListener(this);
p[i].add(b[i]);
}
jsp.setResizeWeight(0.3);
add(jsp);
setSize(800,500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setVisible(true);
}

publicstaticvoidmain(String[]args){
newD();
}
@Override
publicvoidactionPerformed(ActionEvente){
cl.show(jp2,String.valueOf(j++));
if(j==4)j=0;
}
classImageJPanelextendsJPanel{
privateImageimage;
JButtoncard_jb1=newJButton("按钮1");
JButtoncard_jb2=newJButton("按钮2");
JButtoncard_jb3=newJButton("按钮3");
JButtonjb=newJButton("第1页,下一页");
publicImageJPanel(){
super();
setOpaque(true);
add(card_jb1);
add(card_jb2);
add(card_jb3);
jb.addActionListener(newActionListener(){
@Override
publicvoidactionPerformed(ActionEvente){
cl.show(jp2,String.valueOf(j++));
if(j==4)j=0;
}
});
add(jb);
image=Toolkit.getDefaultToolkit().getImage("C:/tmp/F/3.jpg");//这里换成你的背景图片地址
}
publicvoidpaintComponent(Graphicsg){
super.paintComponent(g);
setBackground(Color.WHITE);
if(image!=null){
intheight=image.getHeight(this);
intwidth=image.getWidth(this);
if(height!=-1&&height>getHeight())
height=getHeight();
if(width!=-1&&width>getWidth())
width=getWidth();
intx=(int)(((double)(getWidth()-width))/2.0);
inty=(int)(((double)(getHeight()-height))/2.0);
g.drawImage(image,x,y,width,height,this);
}
}
}
}

㈣ panel组件怎样添加背景图片，要平铺的的解决方案列表

总结：image组件放panel上，添加图片，align属性设置为alclient可以随着最大最小化，自动调整，image的扩展属性设置为true,覆盖整个panel. tlabel组件有个透明属性，设置为ture，则显示字体，背景则与其所属组件背景一致；另，使用tlabel组件可能会出现字体竖排的情况，跟字体选择有关，更换不同的字体，可以更正。 以上，供了解

㈤ java中panel中设置背景图片

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

/*
* NewJFrame.java
*
* Created on 2010-4-25, 16:12:38
*/

package test;

import java.awt.*;
import javax.swing.*;
/**
*
* @author Administrator
*/
public class NewJFrame extends javax.swing.JFrame {
JScrollPane scrollPane;
ImageIcon icon;
Image image;

/** Creates new form NewJFrame */
public NewJFrame() {
initComponents();
icon = new ImageIcon("login1.jpg");
jPanel1.setPreferredSize( new Dimension(614, 363) );
scrollPane = new JScrollPane( jPanel1 );
getContentPane().add( jPanel1 );
}

/** 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">//GEN-BEGIN:initComponents
private void initComponents() {

jPanel1 = new javax.swing.JPanel()
{
protected void paintComponent(Graphics g)
{
g.drawImage(icon.getImage(), 0, 0, null);
super.paintComponent(g);
}
};
jPanel2 = new javax.swing.JPanel();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setResizable(false);

jPanel1.setOpaque(false);

jPanel2.setBorder(new javax.swing.border.LineBorder(new java.awt.Color(0, 0, 0), 1, true));

javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 308, Short.MAX_VALUE)
);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 140, Short.MAX_VALUE)
);

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(149, 149, 149)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(154, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(161, 161, 161)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(62, Short.MAX_VALUE))
);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);

pack();
}// </editor-fold>//GEN-END:initComponents

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);
new NewJFrame().setSize(613, 365);
}
});
}

// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
// End of variables declaration//GEN-END:variables

}

㈥ Java swing 窗体如何设置背景图片

background=newImageIcon("images/backImage.png");

backImage=newJLabel(background);

backImage.setBounds(0,0,background.getIconWidth(),

background.getIconHeight());

backPanel=(JPanel)this.getContentPane();

backPanel.setOpaque(false);

this.getLayeredPane().setLayout(null);

this.getLayeredPane().add(backImage,newInteger(Integer.MIN_VALUE));

backPanel.setLayout(newBorderLayout());

这个是我程序里面复制出来的，效果就下面图一样。

㈦ 如何给JAVA GUI 窗口添加背景图片

用PANEL
继承PANEL重写paintComponent方法，
这些控制添加在panel上，就不会出现你说的问题了。

重写paint，会出现你说的问题
直接在窗体上添加了背景图片也会出现你说的问题。

下边是例子。

------------------------------------------------------------------------------------
import javax.swing.ImageIcon;

public class App extends JFrame {
private JTextField textField;

public App() {
getContentPane().setLayout(new BorderLayout(0, 0));

JPanel panel = new ImagePanel();
getContentPane().add(panel);
panel.setLayout(null);

JButton btnNewButton = new JButton("New button");
btnNewButton.setBounds(108, 234, 93, 23);
panel.add(btnNewButton);

textField = new JTextField();
textField.setBounds(214, 176, 96, 19);
panel.add(textField);
textField.setColumns(10);

setSize(460, 350);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setVisible(true);
}

public static void main(String[] args) {
new App();
}

class ImagePanel extends JPanel {

protected void paintComponent(Graphics g) {
super.paintComponent(g);
ImageIcon icon = new ImageIcon("D:\\1.jpg");
g.drawImage(icon.getImage(), 0, 0, null);

}

}
}

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