How to add parameters to a HTTP GET request in Android?

I use a List of NameValuePair and URLEncodedUtils to create the url string I want.

protected String addLocationToUrl(String url){    if(!url.endsWith("?"))        url += "?";    List<NameValuePair> params = new LinkedList<NameValuePair>();    if (lat != 0.0 && lon != 0.0){        params.add(new BasicNameValuePair("lat", String.valueOf(lat)));        params.add(new BasicNameValuePair("lon", String.valueOf(lon)));    }    if (address != null && address.getPostalCode() != null)        params.add(new BasicNameValuePair("postalCode", address.getPostalCode()));    if (address != null && address.getCountryCode() != null)        params.add(new BasicNameValuePair("country",address.getCountryCode()));    params.add(new BasicNameValuePair("user", agent.uniqueId));    String paramString = URLEncodedUtils.format(params, "utf-8");    url += paramString;    return url;}

To build uri with get parameters, Uri.Builder provides a more effective way.

Uri uri = new Uri.Builder()    .scheme("http")    .authority("foo.com")    .path("someservlet")    .appendQueryParameter("param1", foo)    .appendQueryParameter("param2", bar)    .build();

As of HttpComponents 4.2+ there is a new class URIBuilder, which provides convenient way for generating URIs.

You can use either create URI directly from String URL:

List<NameValuePair> listOfParameters = ...;URI uri = new URIBuilder("http://example.com:8080/path/to/resource?mandatoryParam=someValue")    .addParameter("firstParam", firstVal)    .addParameter("secondParam", secondVal)    .addParameters(listOfParameters)    .build();

Otherwise, you can specify all parameters explicitly:

URI uri = new URIBuilder()    .setScheme("http")    .setHost("example.com")    .setPort(8080)    .setPath("/path/to/resource")    .addParameter("mandatoryParam", "someValue")    .addParameter("firstParam", firstVal)    .addParameter("secondParam", secondVal)    .addParameters(listOfParameters)    .build();

Once you have created URI object, then you just simply need to create HttpGet object and perform it:

//create GET requestHttpGet httpGet = new HttpGet(uri);//perform requesthttpClient.execute(httpGet ...//additional parameters, handle response etc.