AndroidAsync

AndroidAsync is a java.nio based socket and http library for Android.

Download a url to a String

// url is the URL to download. The callback will be invoked on the UI thread
// once the download is complete.
AsyncHttpClient.get(url, new AsyncHttpClient.StringCallback() {
 @Override
 // Callback is invoked with any exceptions/errors, and the result, if available.
 public void onCompleted(Exception e, String result) {
 if (e != null) {
 e.printStackTrace();
 return;
 }
 System.out.println("I got a string: " + result);
 }
});

Download a url to a file

AsyncHttpClient.get(url, filename, new AsyncHttpClient.FileCallback() {
 @Override
 public void onCompleted(Exception e, File result) {
 if (e != null) {
 e.printStackTrace();
 return;
 }
 System.out.println("my file is available at: " + result.getAbsolutePath());
 }
});

AndroidAsync also let's you create simple HTTP servers:

// listen on port 5000
AsyncHttpServer mServer = new AsyncHttpServer(5000);
mServer.get("/", new HttpServerRequestCallback() {
 @Override
 public void onRequest(AsyncHttpServerRequest request, AsyncHttpServerResponse response) {
 response.send("Hello!!!");
 }
});
// browsing http://localhost:5000 will return Hello!!!