java让两张图交替出现在窗口上,使用java使用计时器交替显示图像

Java实现两张图在窗口交替显示

最新推荐文章于 2021-03-22 13:05:47 发布

转载最新推荐文章于 2021-03-22 13:05:47 发布 · 231 阅读

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#java让两张图交替出现在窗口上

博主非计算机专业，编程遇困难，想实现两张图在窗口交替显示，如A图显示1000ms，B图显示200ms，循环至用户按键。博主能加载图片、捕获用户输入，但对定时器操作不熟悉。解决方案是使用SwingWorker，按键监听器取消SwingWorker。

Since I'm not a CS major, I'm having some difficulties translating my programming wishes into an actual program.

What it basically boils down to is the following: how can I alternate an image on a label, showing each image for an amount of tim specific for each image.

So: say I've images A and B; I'd like the user to see A for 1000ms and B for 200ms. This keeps on looping until a user presses a certain key.

Now, I'm able to load an image onto a panel, quite easily even, and I've managed to catch user input using KeyListener and stuff, which all works quite nicely and alot easier then I had expected. I also know how to use looping constructs like while, for and do..while, but this timer business is shady.

I see all kinds of stuff using threads and what not, I really don't need that. This is not about efficient programming or good code, it's simply about demonstrating something.

Any help would be greatly appreciated!

解决方案

Use a SwingWorker. The doInBackground method of the SwingWorker should look like this :

@Override

protected Void doInBackground() {

try {

while (true) {

displayImage(imageA);

Thread.sleep(1000L);

if (isCancelled()) {

return null;

}