Question

I am trying to wrap my head around List<String> I have a dynamicly created array List<String> selected_tags That I would like to convert to break apart the elements and place a “%” inbetween each element so I can use the new string in a http call.

Creat my new List :

public List<String> selected_tags = new ArrayList<String>();

Fill my List string

        for (int i = 0; i < tags.length; i++) {
            if (selected[i] == true){
                 selected_tags.add(tags[i]);
            }
            }

I then need to use selected_tags in my url

HttpGet httpPost = new HttpGet("http://www.mywebsite.com/scripts/getData.php?tags="+ BROKEN DOWN LIST<STRING>);

I would like for it to look like

HttpGet httpPost = new HttpGet("http://www.mywebsite.com/scripts/getData.php?tags=tag1%tag2%tag3);

Answer 1

StringBuilder s = new StringBuilder();
boolean first = true;   

for (String tag : selected_tags)  {
    if (!first)
        s.append("%");
    else
        first = false;

    s.append(tag);
}

String myUrlString = "tags=" + s.toString();