Java Swing 中的 gif 动画问题 [英] Issue with gif animation in Java swing

问题描述

当我尝试加载 gif 动画时，我只是得到一个空帧.你知道有什么问题吗?该文件位于 extras/loading.gif 中:

package an1;导入 javax.swing.ImageIcon;导入 javax.swing.JFrame;导入 javax.swing.JLabel;公共类 An1 {公共静态无效主(字符串 [] args){JFrame frame = new JFrame("Test");ImageIcon loading = new ImageIcon("extras/loading.gif");frame.add(new JLabel(loading, JLabel.CENTER));frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setSize(400, 300);frame.setVisible(true);}}

我使用本网站

解决方案

在您的机器上运行此源代码并检查它是否有效..

import java.net.*;导入 javax.swing.*;公共类 An1 {public static void main(String[] args) 抛出 MalformedURLException {JFrame frame = new JFrame("Test");ImageIcon 加载 = 新的 ImageIcon(新网址("http://i.stack.imgur.com/8IXqb.gif"));frame.add(new JLabel(loading, JLabel.CENTER));frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setSize(400, 300);frame.setVisible(true);}}

注意应用程序资源将在部署时成为嵌入式资源，因此明智的做法是立即开始访问它们.必须访问 embedded-resource通过 URL 而不是文件.请参阅信息.嵌入资源的页面，了解如何形成 URL.

When I try to load a gif animation I am just getting an empty frame. Do you know what is wrong? The file is located within extras/loading.gif:

package an1;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;


public class An1 {

 public static void main(String[] args){

    JFrame frame = new JFrame("Test");

    ImageIcon loading = new ImageIcon("extras/loading.gif");
    frame.add(new JLabel(loading, JLabel.CENTER));

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(400, 300);
    frame.setVisible(true);


}
}

I got loading.gif using this website http://spiffygif.com with the default settings. I just changed the name from gif.gif to loading.gif. Here it is:

解决方案

Run this source on your machine and check it works..

import java.net.*;
import javax.swing.*;

public class An1 {

    public static void main(String[] args) throws MalformedURLException {
        JFrame frame = new JFrame("Test");

        ImageIcon loading = new ImageIcon(
                new URL("http://i.stack.imgur.com/8IXqb.gif"));
        frame.add(new JLabel(loading, JLabel.CENTER));

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 300);
        frame.setVisible(true);
    }
}

N.B. Application resources will become embedded resources by the time of deployment, so it is wise to start accessing them as if they were, right now. An embedded-resource must be accessed by URL rather than file. See the info. page for embedded resource for how to form the URL.

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