In this example we will learn how to make POST Method request to server in android.

 

NOTE:

Always call server with the use of thread and handlers, if not using request with thread then server request will lock activity to complete request  , if user will interact with activity before server request complete  then activity  will give ANR (FORCE CLOSE ERROR) problem.

Please see this example Thread With Handlers to make request to server with Thread and Handlers.
 

HttpPostExample.java File

 


      public class HttpPostExample extends Activity {
        
            TextView content;
            EditText fname, email, login, pass;
            String Name, Email, Login, Pass; 
            
            /** Called when the activity is first created. */ 
            @Override
            public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_http_post_example);
                
                content    =   (TextView)findViewById( R.id.content );
                fname      =   (EditText)findViewById(R.id.name);
                email      =   (EditText)findViewById(R.id.email);
                login      =    (EditText)findViewById(R.id.loginname);
                pass       =   (EditText)findViewById(R.id.password);
                
                
                Button saveme=(Button)findViewById(R.id.save);
 
                saveme.setOnClickListener(new Button.OnClickListener(){
 
                    public void onClick(View v)
                    {
                        try{
                            
                                 // CALL GetText method to make post method call
                                GetText();
                         }
                        catch(Exception ex)
                         {
                            content.setText(" url exeption! " );
                         }
                    }
                });  
            }
            
        // Create GetText Metod
      public  void  GetText()  throws  UnsupportedEncodingException
            {
                // Get user defined values
                Name = fname.getText().toString();
                Email   = email.getText().toString();
                Login   = login.getText().toString();
                Pass   = pass.getText().toString();
                
                 // Create data variable for sent values to server  
                
                  String data = URLEncoder.encode("name", "UTF-8") 
                               + "=" + URLEncoder.encode(Name, "UTF-8"); 
 
                  data += "&" + URLEncoder.encode("email", "UTF-8") + "=" 
                              + URLEncoder.encode(Email, "UTF-8"); 
 
                  data += "&" + URLEncoder.encode("user", "UTF-8") 
                              + "=" + URLEncoder.encode(Login, "UTF-8");
 
                  data += "&" + URLEncoder.encode("pass", "UTF-8") 
                              + "=" + URLEncoder.encode(Pass, "UTF-8");
                 
                  String text = "";
                  BufferedReader reader=null;
 
                  // Send data 
                try
                { 
                 
                    // Defined URL  where to send data
                    URL url = new URL("/media/webservice/httppost.php");
                    
                 // Send POST data request
 
                  URLConnection conn = url.openConnection(); 
                  conn.setDoOutput(true); 
                  OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream()); 
                  wr.write( data ); 
                  wr.flush(); 
             
                  // Get the server response 
                  
                reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                StringBuilder sb = new StringBuilder();
                String line = null;
               
                // Read Server Response
                while((line = reader.readLine()) != null)
                    {
                           // Append server response in string
                           sb.append(line + "\n");
                    }
                   
                   
                    text = sb.toString();
                }
                catch(Exception ex)
                {
                    
                }
                finally
                {
                    try
                    {
        
                        reader.close();
                    }

                    catch(Exception ex) {}
                }
                     
                // Show response on activity
                content.setText( text  );
               
            }
        
        }

 

Define permission in AndroidManifest.xml File

 



     
   

 

Server file httppost.php

This file will get POST method request and send response.

 


 <?php 
 
        $name   = urldecode($_POST['name']);
        $user   = urldecode($_POST['user']);
        $email  = urldecode($_POST['email']);
        $pass   = urldecode($_POST['pass']);
        
        print " ==== POST DATA =====
        Name  : $name 
        Email : $email
        User  : $user 
        Pass  : $pass"; 
 
  ?>
 

 
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