Java 如何更改 JFrame 图标
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/1614772/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to change JFrame icon
提问by Anand
I have a JFramethat displays a Java icon on the title bar (left corner).
I want to change that icon to my custom icon. How should I do it?
我有一个JFrame在标题栏（左角）上显示 Java 图标的工具。我想将该图标更改为我的自定义图标。我该怎么做？
采纳答案by BFree
Create a new ImageIconobject like this:
ImageIcon像这样创建一个新对象：
ImageIcon img = new ImageIcon(pathToFileOnDisk);
Then set it to your JFramewith setIconImage():
然后将其设置为您的JFramewith setIconImage()：
myFrame.setIconImage(img.getImage());
Also checkout setIconImages()which takes a Listinstead.
也结帐setIconImages()需要一个List代替。
回答by Gandalf
JFrame.setIconImage(Image image)pretty standard.
JFrame.setIconImage(Image image)很标准。
回答by TameHog
Here is how I do it:
这是我如何做到的：
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import java.io.File;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
public class MainFrame implements ActionListener{
/**
*
*/
/**
* @param args
*/
public static void main(String[] args) {
String appdata = System.getenv("APPDATA");
String iconPath = appdata + "\JAPP_icon.png";
File icon = new File(iconPath);
if(!icon.exists()){
FileDownloaderNEW fd = new FileDownloaderNEW();
fd.download("http://icons.iconarchive.com/icons/artua/mac/512/Setting-icon.png", iconPath, false, false);
}
JFrame frm = new JFrame("Test");
ImageIcon imgicon = new ImageIcon(iconPath);
JButton bttn = new JButton("Kill");
MainFrame frame = new MainFrame();
bttn.addActionListener(frame);
frm.add(bttn);
frm.setIconImage(imgicon.getImage());
frm.setSize(100, 100);
frm.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
}
and here is the downloader:
这是下载器：
import java.awt.GridLayout;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JProgressBar;
public class FileDownloaderNEW extends JFrame {
private static final long serialVersionUID = 1L;
public static void download(String a1, String a2, boolean showUI, boolean exit)
throws Exception
{
String site = a1;
String filename = a2;
JFrame frm = new JFrame("Download Progress");
JProgressBar current = new JProgressBar(0, 100);
JProgressBar DownloadProg = new JProgressBar(0, 100);
JLabel downloadSize = new JLabel();
current.setSize(50, 50);
current.setValue(43);
current.setStringPainted(true);
frm.add(downloadSize);
frm.add(current);
frm.add(DownloadProg);
frm.setVisible(showUI);
frm.setLayout(new GridLayout(1, 3, 5, 5));
frm.pack();
frm.setDefaultCloseOperation(3);
try
{
URL url = new URL(site);
HttpURLConnection connection =
(HttpURLConnection)url.openConnection();
int filesize = connection.getContentLength();
float totalDataRead = 0.0F;
BufferedInputStream in = new BufferedInputStream(connection.getInputStream());
FileOutputStream fos = new FileOutputStream(filename);
BufferedOutputStream bout = new BufferedOutputStream(fos, 1024);
byte[] data = new byte[1024];
int i = 0;
while ((i = in.read(data, 0, 1024)) >= 0)
{
totalDataRead += i;
float prog = 100.0F - totalDataRead * 100.0F / filesize;
DownloadProg.setValue((int)prog);
bout.write(data, 0, i);
float Percent = totalDataRead * 100.0F / filesize;
current.setValue((int)Percent);
double kbSize = filesize / 1000;
String unit = "kb";
double Size;
if (kbSize > 999.0D) {
Size = kbSize / 1000.0D;
unit = "mb";
} else {
Size = kbSize;
}
downloadSize.setText("Filesize: " + Double.toString(Size) + unit);
}
bout.close();
in.close();
System.out.println("Took " + System.nanoTime() / 1000000000L / 10000L + " seconds");
}
catch (Exception e)
{
JOptionPane.showConfirmDialog(
null, e.getMessage(), "Error",
-1);
} finally {
if(exit = true){
System.exit(128);
}
}
}
}
回答by Mmir
Here is an Alternative that worked for me:
这是一个对我有用的替代方案：
yourFrame.setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource(Filepath)));
It's very similar to the accepted Answer.
它与接受的答案非常相似。
回答by otterb
Unfortunately, the above solution did not work for Jython Fiji plugin. I had to use getPropertyto construct the relative path dynamically.
不幸的是，上述解决方案不适用于 Jython Fiji 插件。我不得不使用getProperty动态构造相对路径。
Here's what worked for me:
以下是对我有用的内容：
import java.lang.System.getProperty;
import javax.swing.JFrame;
import javax.swing.ImageIcon;
frame = JFrame("Test")
icon = ImageIcon(getProperty('fiji.dir') + '/path/relative2Fiji/icon.png')
frame.setIconImage(icon.getImage());
frame.setVisible(True)
回答by user5984256
Just add the following code:
只需添加以下代码：
setIconImage(new ImageIcon(PathOfFile).getImage());
回答by shareef
This did the trick in my case superor thisreferes to JFramein my class
这在我的案例中起到了作用，super或者在我的课堂上参考了thisJFrame
URL url = getClass().getResource("gfx/hi_20px.png");
ImageIcon imgicon = new ImageIcon(url);
super.setIconImage(imgicon.getImage());
回答by Raymond Wachaga
Add the following code within the constructor like so:
在构造函数中添加以下代码，如下所示：
public Calculator() {
initComponents();
//the code to be added this.setIconImage(newImageIcon(getClass().getResource("color.png")).getImage()); }
Change "color.png" to the file name of the picture you want to insert. Drag and drop this picture onto the package (under Source Packages) of your project.
将“color.png”更改为要插入的图片的文件名。将此图片拖放到项目的包中（在 Source Packages 下）。
Run your project.
运行你的项目。
