Android实现多张图片合成GIF

原文链接：http://blog.csdn.net/u011102153/article/details/52122722

工程地址：https://github.com/LineChen/GifMaker

工具类：

public static String createGif(String filename, List<String> paths, int fps, int width, int height) throws IOException {

ByteArrayOutputStream baos = new ByteArrayOutputStream();
AnimatedGifEncoder localAnimatedGifEncoder = new AnimatedGifEncoder();
localAnimatedGifEncoder.start(baos);//start
localAnimatedGifEncoder.setRepeat(0);//设置生成gif的开始播放时间。0为立即开始播放
localAnimatedGifEncoder.setDelay(fps);
if (paths.size() > 0) {
for (int i = 0; i < paths.size(); i++) {
Bitmap bitmap = BitmapFactory.decodeFile(paths.get(i));
Bitmap resizeBm = ImageUtil.resizeImage(bitmap, width, height);
localAnimatedGifEncoder.addFrame(resizeBm);
}
}
localAnimatedGifEncoder.finish();//finish

File file = new File(Environment.getExternalStorageDirectory().getPath() + "/LiliNote");
if (!file.exists()) file.mkdir();
String path = Environment.getExternalStorageDirectory().getPath() + "/LiliNote/" + filename + ".gif";
FileOutputStream fos = new FileOutputStream(path);
baos.writeTo(fos);
baos.flush();
fos.flush();
baos.close();
fos.close();

return path;
}

主要参数：图片地址集合、GIF播放每张图片的时间间隔、宽度、高度。

方法中最重要的类是AnimatedGifEncoder，这个类在Glide图片加载库中有，所以工程中也添加了Glide依赖。