Java 如何将url图像下载到现有列表视图

我有一个自定义的listview，它有自己的基本适配器。目前它有一个标题和描述。我想从url添加一个图像。但我不知道如何调整代码以添加所述图像

当listview中的项目被按下时，我已经在使用异步任务下载文件了。我可以重用此方法来添加图像吗

我的文件下载异步任务仅在此时执行

class DownloadFileFromURL extends AsyncTask<String, String, String> {

    /**
     * Before starting background thread
     * Show Progress Bar Dialog
     * */
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        showDialog(progress_bar_type);
    }

    /**
     * Downloading file in background thread
     * */
    @Override
    protected String doInBackground(String... f_url) {
        int count;
        try {
            URL url = new URL(f_url[0]);
            URLConnection conection = url.openConnection();
            conection.connect();
            // getting file length
            int lenghtOfFile = conection.getContentLength();

            // input stream to read file - with 8k buffer
            InputStream input = new BufferedInputStream(url.openStream(), 8192);

            // Output stream to write file
            OutputStream output = new FileOutputStream("/sdcard/Download/"+newnamestring);

            byte data[] = new byte[1024];

            long total = 0;

            while ((count = input.read(data)) != -1) {
                total += count;
                // publishing the progress....
                // After this onProgressUpdate will be called
                publishProgress(""+(int)((total*100)/lenghtOfFile));

                // writing data to file
                output.write(data, 0, count);
            }

            // flushing output
            output.flush();

            // closing streams
            output.close();
            input.close();

        } catch (Exception e) {
            Log.e("Error: ", e.getMessage());
        }

        return null;
    }

    /**
     * Updating progress bar
     * */
    protected void onProgressUpdate(String... progress) {
        // setting progress percentage
        pDialog.setProgress(Integer.parseInt(progress[0]));
    }

    /**
     * After completing background task
     * Dismiss the progress dialog
     * **/
    @Override
    protected void onPostExecute(String file_url) {
        // dismiss the dialog after the file was downloaded

        dismissDialog(progress_bar_type);
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory() + "/download/" + newnamestring)), "application/vnd.android.package-archive");
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(intent);




    }

}

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如果您想从URL下载图像并将其显示到您的ImageView中，您可以做的最好的事情是使用库，此库可以将图像下载并显示到您的ImageView中，并将其缓存以供下次使用， 这就是在添加到项目后如何使用它；

---

Glide.with（mContext）.load（imageUrl）.into（yourImageView）
#哈米德：谢谢你，我想我可能已经把glide图书馆忘得一干二净了
class dataListAdapter extends BaseAdapter {
    String[] Title, Detail;


    dataListAdapter() {
        Title = null;
        Detail = null;

        ;

    }

    public dataListAdapter(String[] text, String[] text1 ) {
        Title = text;
        Detail = text1;





    }

    public int getCount() {
        // TODO Auto-generated method stub
        return Title.length;
    }

    public Object getItem(int arg0) {
        // TODO Auto-generated method stub
        return null;
    }

    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    public View getView(int position, View convertView, ViewGroup parent) {

        LayoutInflater inflater = getLayoutInflater();
        View row;

        row = inflater.inflate(R.layout.custom, parent, false);
        TextView title, detail;
        title = (TextView) row.findViewById(R.id.titleapp);
        detail = (TextView) row.findViewById(R.id.detail);
        title.setText(Title[position]);
        detail.setText(Detail[position]);
        return (row);
    }


}