在JAVA中了解gif是否具有动画效果 [英] Understand an gif is animated or not in JAVA

问题描述

我有一个gif图像，我希望能够使用JAVA检测gif是否是动画gif。这个问题是关于检测而不是显示gif。

I have a gif image and I would like to be able to detect whether the gif is an animated gif or not using JAVA. This question is about detection rather than displaying the gif.

我看到动画gif的MIME类型与静态gif没有区别。

I see that MIME type of animated gif isn't different of static gif.

我怎么做？

推荐答案

你需要一个ImageReader。如果size为1则不动画，上面的所有内容都是动画的。
检查出来：

You need an ImageReader. if size is 1 its not animated, everything above is animated. Check this out:

public Snippet() {
        File f = new File("test.gif");
        ImageReader is = ImageIO.getImageReadersBySuffix("GIF").next();  
        ImageInputStream iis;
        try {
            iis = ImageIO.createImageInputStream(f);
            is.setInput(iis);  
            int images= is.getNumImages(true);
        } catch (IOException e) {
            e.printStackTrace();
        }  
}

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