在Java / Android中多次复制字符串的一部分

Question

I have a source code from a website where textmessages start with "< h2 >" and end with "< /h2 >". In my app, I read the source code and make it into a string. Now I want to read only the messages, and have tried with this:

returned = get.getInternetData("http://blablabla.com");
int start = returned.indexOf("<h2>") + 4;
int end = returned.indexOf("</h2>");
String message = returned.substring(start, end);

The problem is that I only get the very first message! My idea was to use a scanner object and do something like

while (scan.hasNext("<h2>")) {
        }

But there are no get-methods from the scanner. How can read all the messages from the source code?

Answer 1

you should do something like this:

while (returned.indexOf("<h2>", lastIndex)!=-1) {
   .... 
   do your thing
   ...
   increment lastIndex 
}

Answer 2

Using Jsoup you can do this:

 Document doc = Jsoup.connect("http://blablabla.com").get();
 Elements h2Tag = doc.select("h2");
 ArrayList<String> messages = new ArrayList<String>();
 for(Element mess: h2Tag){
     messages.add(mess.text());
 }