/**
 * 根据图片的url路径获得Bitmap对象 * @param url * @return
 */

private Bitmap returnBitmap(String url) {
    URL fileUrl = null;
    Bitmap bitmap = null;
    try {
        fileUrl = new URL(url);
    } catch (MalformedURLException e) {
        e.printStackTrace();
    }
    try {
        HttpURLConnection conn = (HttpURLConnection) fileUrl.openConnection();
        conn.setDoInput(true);
        conn.connect();
        InputStream is = conn.getInputStream();
        bitmap = BitmapFactory.decodeStream(is);
        is.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return bitmap;
}