How Android uses httpclient to get data and add HTTP header information

How to get the data on the HTTP server and append HTTP first class authentication information when getting the data, see the following code:

public void Httpgetdata () {
	try {
		httpclient httpclient = new Defaulthttpclient ();
		String uri = "http://www.yourweb.com"; 
		HttpGet get = new HttpGet (URI);
		Add HTTP header information  
		get.addheader ("Authorization", "Your Token");
		Get.addheader ("Content-type", "Application/json");
		Get.addheader ("User-agent", "Your Agent");
		HttpResponse response;
		Response = Httpclient.execute (get);
		int code = Response.getstatusline (). Getstatuscode ();
		Verify status code if successfully received data if 
		(code = =) {
			//returns JSON format: {"id": "27jpl~j4vsl0lx00e00005", "Version": "ABC"}         
			String rev. = entityutils.tostring (response.getentity ());		
			obj = new Jsonobject (rev);  
			String id = obj.getstring ("id");  
			String Version = obj.getstring ("version");  
		}
	} catch (Exception e) {		
	}
}

Main classes used: Org.apache.http.client.HttpClient, Org.apache.http.client.methods.HttpGet and Org.json.JSONObject