Creating a nice “LOADING…” animation [duplicate]

问题

Possible Duplicate:
Pretty alternative to JProgressBar?

I have a process which takes several seconds to load, and I want to create an animation in Java Swing until it finishes loading.

I'd like to avoid using a typical ProgressBar and use a nice modern infinite progress like this one

I'm aware of similar questions but this is strictly Java Swing related. Is there any library or example for this?

回答1:

I'd recommend using the glasspane for this type of activity. The steps involved are:

Create a JComponent with BorderLayout. Add a JLabel to the CENTER which includes the animated .gif icon of your choice.
(Optional) Override the paint(Graphics) method to make your GUI appear greyed out (or whited out). To achieve this you need to draw a filled rectangle the size of the component, filling the rectangle with a semi-transparent Color.
Add the component as the glasspane of your application's root frame.

回答2:

Just use a ImageIcon for this task, it automatically animates gifs. The code below produced this screenshot (the ajax-loader.gif was downloaded from http://www.ajaxload.info/):

Code:

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

    ImageIcon loading = new ImageIcon("ajax-loader.gif");
    frame.add(new JLabel("loading... ", loading, JLabel.CENTER));

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

回答3:

Sure it's possible. You can use the tool AjaxLoad to generate an animated image, which can be used in any image/html container.

来源：https://stackoverflow.com/questions/7634402/creating-a-nice-loading-animation

标签

java

animation