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POCannot get HttpClient to execute Imgur API v3 post request
 

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  1. POCannot get HttpClient to execute Imgur API v3 post request
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    <p>I am trying to build an app which uploads anonymously to Imgur API v3, and this seems to cause a <code>NullPointerException</code>. I do have the Internet permission added to my manifest so I'm not sure why this isn't working. The <code>client-id</code> is removed for obvious reasons. Any suggestions would be greatly appreciated.</p> <pre><code>public HttpResponse uploadImage(String image_contents) { /* defining imgur api location */ String API = ("https://api.imgur.com/3/image.json"); Uri imgurAPI = (Uri.parse(API)); // url encoding for bitmap // String dev_key = ("anon-dev-key-removed"); String client_id = ("client-id-removed"); /* String client_secret = ("secret-id-removed"); */ /* constructing query */ // spawning apache httpclient and post instance HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost(API); // defining namevaluepairs for post data and setting entity // httpclient help from this url: // http://www.vogella.com/articles/ApacheHttpClient/article.html List&lt;NameValuePair&gt; nameValuePairs = new ArrayList&lt;NameValuePair&gt;(1); nameValuePairs.add(new BasicNameValuePair("image", image_contents)); /* for debugging purposes */ if (android.os.Build.VERSION.SDK_INT &gt; 9) { StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder() .permitAll().build(); StrictMode.setThreadPolicy(policy); } /* end for debugging purposes */ try { httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } // adding oauth2 header with clientid httppost.addHeader("Authorization", "Client-ID " + client_id); // execute the post and collect the response as a httpresponse object HttpResponse response = null; changeText(httppost.toString()); try { response = httpclient.execute(httppost); } catch (ClientProtocolException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } /* shut down http client */ httpclient.getConnectionManager().shutdown(); return response; } </code></pre> <p><code>uploadImage()</code> doesn't crash, but when I try to handle the <code>HttpResponse</code> I get the <code>NullPointerException</code>:</p> <pre><code>public void provideURL(HttpResponse response) { int responseCode=response.getStatusLine().getStatusCode(); changeText("test"); } </code></pre>
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    1. COu will need to make an HTTPS request instead of HTTP bez your webservice url contains HTTPS protocal instead of HTTP
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    2. CO@ρяσѕρєяK I might be wrong but I think that HttpClient works with HTTPS natively as long as you provide the correct URL. I just got this to work by switching to the Imgur API v2 but I'm not sure why this won't work with version 3.
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