ImageFragment.java 文件源码

@Override
protected byte[] doInBackground(Void... params) {
    try {
        // Grab an input stream to the image
        OkHttpDownloader downloader = new OkHttpDownloader(getContext());
        Downloader.Response response = downloader.load(Uri.parse(url), 0);

        // Read the image into a byte array
        return Okio.buffer(Okio.source(response.getInputStream())).readByteArray();
    } catch (Exception e) {
        Log.d(ImageFragment.class.getSimpleName(), "Error fetching image", e);
        return null;
    }
}