?
Solved

java List question

Posted on 2012-04-07
7
Medium Priority
?
538 Views
Last Modified: 2012-04-12
Hello there,

can somebody please explain this line of code.thanks

List<NameValuePair> params = new ArrayList<NameValuePair>();

Open in new window


cheers
Zolf
0
Comment
Question by:zolf
7 Comments
 

Author Comment

by:zolf
ID: 37820659
what i am trying to do is

I have these two methods. i am using the executeHttpPost method in the login method to pass 2 parameter.but i get error in the login method when i try to add the String to the List.please help

public String executeHttpPost(List<NameValuePair> data)
	{
		try
		{
			HttpClient client = getHttpClient();
			//String postURL = furl;
			/*Log.d("ZAJ sendPost URL", postURL + " " + data.get(0).toString() + " "
					+ data.get(1).toString());*/
			HttpPost post = new HttpPost(url);
			List<NameValuePair> params = new ArrayList<NameValuePair>();
			params.add(new BasicNameValuePair("username", data.get(0).toString()));
			params.add(new BasicNameValuePair("password", data.get(1).toString()));
			UrlEncodedFormEntity ent = new UrlEncodedFormEntity(params, HTTP.UTF_8);
			post.setEntity(ent);
			HttpResponse responsePOST = client.execute(post);
			HttpEntity resEntity = responsePOST.getEntity();
			if (resEntity != null)
			{
				String response = EntityUtils.toString(resEntity);
				Log.i("RESPONSE", response);
				return response;
			}

		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
		return null;
	}

Open in new window


==============================================

public boolean login(String username,String password)
	{
		/*
		 * Log.d("ZAJ URL", url + "?action=login&username=" +
		 * data.get(0).toString() + "&password=" + data.get(1).toString());
		 */

		//String fullURL = url + "?action=login";
		
		List<NameValuePair> data = new ArrayList<NameValuePair>();
		
		data.add(username);
		data.add(password);
		
		
		String response = executeHttpPost(data);

		String delimiter = "\\|";

		String[] temp = response.split(delimiter);

		if (temp[0].equals("100"))
		{
			return true;
		}
		else
		{
			return false;
		}
	}

Open in new window

0
 
LVL 23

Accepted Solution

by:
basicinstinct earned 600 total points
ID: 37820780
Your list only accepts an instance of "NameValuePair". Is a string an instance of NameValuePair? No. So you can't put a string in it.
0
 
LVL 26

Expert Comment

by:Tomas Helgi Johannsson
ID: 37821119
Hi!

What error do you get ?

Regards,
    Tomas Helgi
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 2

Assisted Solution

by:Elbassel
Elbassel earned 300 total points
ID: 37821216
This line means that:
The list stores objects of type NameValuePair class, so you can't add any other objects of another type.

Best wishes
0
 
LVL 26

Assisted Solution

by:ksivananth
ksivananth earned 300 total points
ID: 37822458
try this,

data.add(new BasicNameValuePair("username", username));
data.add(new BasicNameValuePair("password", password));
0
 
LVL 20

Assisted Solution

by:Sathish David Kumar N
Sathish David  Kumar N earned 300 total points
ID: 37836144
if your using apache http client then you can use name NameValuePair. thats is using messaging purpose .

 ksivananth mentioned correct solution for that
0
 

Author Closing Comment

by:zolf
ID: 37841084
thanks
0

Featured Post

Important Lessons on Recovering from Petya

In their most recent webinar, Skyport Systems explores ways to isolate and protect critical databases to keep the core of your company safe from harm.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Introduction This article is the last of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers our test design approach and then goes through a simple test case example, how …
Viewers will learn about basic arrays, how to declare them, and how to use them. Introduction and definition: Declare an array and cover the syntax of declaring them: Initialize every index in the created array: Example/Features of a basic arr…
This theoretical tutorial explains exceptions, reasons for exceptions, different categories of exception and exception hierarchy.
Suggested Courses
Course of the Month16 days, 11 hours left to enroll

862 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question