Utils.java 文件源码

/**
 * Check if a URL is valid and points to a resource on the remote web
 * server. Used to check if certain image sizes are available.
 * 
 * @param url
 * @return
 */
public static boolean checkUrl(String url) {
    Log.d(LOG_TAG, "checkUrl: " + url);
    final AndroidHttpClient client = AndroidHttpClient.newInstance("Android");
    final HttpGet request = new HttpGet(url);
    try {
        HttpResponse response = client.execute(request);
        final int statusCode = response.getStatusLine().getStatusCode();

        if (statusCode == HttpStatus.SC_OK) {
            return true;
        }
    } catch (Exception e) {
        request.abort();
    } finally {
        if (client != null) {
            client.close();
        }
    }
    return false;
}