Android Apache errors

fetchImage.java

	public static void fetchImage(ArrayList imgUrls, ArrayList bmpArr) {
		for (int i = 0; i < imgUrls.size(); i++) {
			String urlstr = (String) imgUrls.get(i);
			InputStream is = null;
			Bitmap bm = null;
			try {
				System.out.println("URL: " + urlstr);
				HttpGet httpRequest = new HttpGet(urlstr);
				System.out.println("Request: " + httpRequest);
				HttpClient httpclient = new DefaultHttpClient();
				HttpResponse response = (HttpResponse) httpclient
						.execute(httpRequest);

				HttpEntity entity = response.getEntity();
				BufferedHttpEntity bufHttpEntity = new BufferedHttpEntity(
						entity);
				is = bufHttpEntity.getContent();
				bm = BitmapFactory.decodeStream(is);
			} catch (MalformedURLException e) {
				Log.d("RemoteImageHandler", "fetchImage passed invalid URL: "
						+ urlstr);
			} catch (IOException e) {
				Log.d("RemoteImageHandler", "fetchImage IO exception: " + e);
			} finally {
				if (is != null)
					try {
						is.close();
					} catch (IOException e) {
					}
			}
			bmpArr.add(bm);
		}
	}

Logcat log

10-31 16:22:50.102: I/System.out(4843): URL: http://ds_product_photos.s3.amazonaws.com/medium/17401.jpg
10-31 16:22:50.112: I/System.out(4843): Request: org.apache.http.client.methods.HttpGet@412ee880
10-31 16:22:50.112: W/dalvikvm(4843): threadid=12: thread exiting with uncaught exception (group=0x40b05300)
10-31 16:22:50.122: E/AndroidRuntime(4843): FATAL EXCEPTION: AsyncTask #2
10-31 16:22:50.122: E/AndroidRuntime(4843): java.lang.RuntimeException: An error occured while executing doInBackground()
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at android.os.AsyncTask$3.done(AsyncTask.java:299)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at java.util.concurrent.FutureTask.run(FutureTask.java:137)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at java.lang.Thread.run(Thread.java:856)
10-31 16:22:50.122: E/AndroidRuntime(4843): Caused by: java.lang.IllegalArgumentException: Host name may not be null
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at org.apache.http.HttpHost.<init>(HttpHost.java:83)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at org.apache.http.impl.client.AbstractHttpClient.determineTarget(AbstractHttpClient.java:497)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at dealflux.android.MainActivity.fetchImage(MainActivity.java:437)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at dealflux.android.MainActivity$fetchImageTask.doInBackground(MainActivity.java:465)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at android.os.AsyncTask$2.call(AsyncTask.java:287)
10-31 16:22:50.122: E/AndroidRuntime(4843): 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)

Turns out the issue is that Apache HTTP on Java cannot process URLs with underscores in the hostname .e.g "http://ds_product_photos.s3.amazonaws.com/medium/17401.jpg"