Question

I am trying to contact an API and get the response. As part of my debugging I want to insure that the response is being recorded, it should be an xml response.

Here’s what I have:

public class http extends Activity {

public void httpMethod(){
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost("http://site.com/api/");

    try {
        // Add your data
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
        nameValuePairs.add(new BasicNameValuePair("apikey", "0d4e122d20"));

        nameValuePairs.add(new BasicNameValuePair("ip", "65.82.126.103"));
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

        // Execute HTTP Post Request
        HttpResponse response = httpclient.execute(httppost);

    } catch (ClientProtocolException e) {
        // TODO Auto-generated catch block
    } catch (IOException e) {
        // TODO Auto-generated catch block
    }

   TextView myTextView = (TextView) findViewById(R.id.myTextView);
   myTextView.setText(response);
}
}

I’m trying to see the response that I get, however the variable response in the line

myTextView.setText(response)

is throwing an error:

response cannot be resolved to a variable

is response not truly a variable of the type httpresponse? what’s going on here…?

Answer 1

Scope of the response variable is inside try block only. Two ways to resolve this:

1) Move these statements right after HttpResponse response = httpclient.execute(httppost);

 TextView myTextView = (TextView) findViewById(R.id.myTextView);
   myTextView.setText(response);

2) Define HttpResponse response out side the try.

EDIT: As WindyB specified when you define outside the try block make sure null check to avoid NullPointerException.

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