Android-async-http Uploading Files

1. Asynchttpclient, Requestparams, Asynchttpresponsehandler three ways to use a class

(1) asynchttpclient
public class Asynchttpclient extends Java.lang.Object
  This class is typically used in Android applications to create asynchronous get, POST, put, and delete HTTP requests, request parameters created through Requestparams instances, and respond by overriding anonymous inner classes Responsehandlerinterface method of processing.
example:

asynchttpclient client = new  Asynchttpclient ();  client.get ("Http://www.baidu.com",  new responsehandlerinterface ()  {       @Override      public void onsuccess (String  response)  {         system.out.println (response);      } }); 

(2) requestparams
public class Requestparams extends java.lang.object 

example:

Requestparams params = new requestparams ();  params.put ("username",  "Tom");  Params.put ("Password",  "111111")  params.put ("email",  "[email protected]");  Params.put ("File",  new file ("test.txt"));  // upload a file map<string,  String> map = new HashMap<String, String> ();  map.put ("first_name") ,  "James"),  map.put ("last_name",  "Smith"),  params.put ("user",  map);  // url  params:  "User[first_name]=james&user[last_name]=smith"  set<string> set =  new HashSet<String> ();  // unordered collection set.add ("Music");  Set.add ("Art");  params.put ("like",  set); // url params:  "Like=music&like=art " List<String> list = new ArrayList<String> (); // ordered  Collection list.add ("JAva ");  list.add (" C ");  params.put (" Languages ",  list); // url params: " Languages[]=java&languages[]=c " String[] colors = { " Blue ", " yellow " };  // ordered collection params.put ("Colors",  colors);  // url params:   "Colors[]=blue&colors[]=yellow"  list<map<string, string>> listofmaps  = new ArrayList<Map<String, String>> (); map<string, string>  user1 = new HashMap<String, String> ("Age",  " user1.put");  User1.put ("Gender",  "male");  map<string, string> user2 = new hashmap <String, String> ("Age",  " user2.put"),  user2.put ("Gender",  "female");  listofmaps.add (user1);  listofmaps.add (User2);  params.put ("Users",  listofmaps);  //  url params:  "users[][age]=30&users[][gender]=male&users[][age]=25&users[][gender]=female " AsyncHttpClient  Client = new asynchttpclient ();  client.post ("Http://myendpoint.com", params,  ResponseHandler);

(3) public class Asynchttpresponsehandler extends Java.lang.Object implements Responsehandlerinterface
is used to intercept and process requests created by Asynchttpclient. The override onsuccess (int, org.apache.http.header[], byte[]) method in anonymous class Asynchttpresponsehandler is used to process requests that respond successfully. In addition, you can also rewrite onfailure (int, org.apache.http.header[], byte[], throwable), OnStart (), OnFinish (), Onretry (), and OnProgress ( int, int) method
example:

Asynchttpclient client = new asynchttpclient ();  client.get ("http://www.google.com",  new asynchttpresponsehandler ()  {      @Override       public void onstart ()  {         //  Initiated the request     }      @Override      public void onsuccess (Int statuscode, header[] headers,  byte[] responsebody)  {         //  successfully got a response     }     @ Override     public void onfailure (int statuscode, header[]  Headers, byte[] responsebody, throwable error)  {          // response failed :(     }      @Override       public void onretry ()  {         //  request was retried     }      @Override       public void onprogress (int byteswritten, int totalsize)   {         // progress notification      }      @Override      public void  OnFinish ()  {         // completed the request   (either success or failure)      } });

2. Uploading files using Requestparams
Class Requestparams supports multipart file upload

(1) Add File object for uploading

File MyFile = new file ("/path/to/file.png");  Requestparams params = new requestparams (); try {params.put ("profile_picture", MyFile);} catch (FileNotFoundException e) {}

(2) Add byte array for uploading (byte conversion see above)

byte[] Mybytearray = bytes; Requestparams params = new Requestparams ();p arams.put ("File", new Bytearrayinputstream (Mybytearray), "Text.txt");

Android-async-http Uploading Files