HttpURLConnection 获取图片

最新推荐文章于 2025-06-11 13:06:20 发布

原创最新推荐文章于 2025-06-11 13:06:20 发布 · 734 阅读

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本文介绍了一个自定义的图片加载类MyRunnable，该类实现了Runnable接口，用于异步加载图片资源并将其缓存到本地。通过HttpURLConnection进行网络请求，并使用BitmapFactory解析图片为Bitmap对象，最终通过Handler发送消息更新UI。

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private class MyRunnable implements Runnable {
    private final String imageUrl;
    private final int position;

    public MyRunnable(String imageUrl, int position) {
        this.imageUrl = imageUrl;
        this.position = position;
    }

    @Override
    public void run() {
        try {
            URL url = new URL(imageUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setConnectTimeout(4000);
            connection.setReadTimeout(4000);
            connection.connect();
            if (connection.getResponseCode() == 200) {
                InputStream is = connection.getInputStream();
                Bitmap bitmap = BitmapFactory.decodeStream(is);
                Message msg = Message.obtain();
                msg.what = SUCCESS;
                msg.arg1 = position;
                msg.obj = bitmap;
                handler.sendMessage(msg);
                Log.e("success", "成功");
                localCacheUtils.putBitmapFromUrl(imageUrl,bitmap);


            }

        } catch (Exception e) {
            Log.e("fail", "失败" + e.toString());

        }
    }
}