My Activity fetches an XML from the Web, parses it and displays
information in a ListView. Everything was working fine until I decided
to do the XML fetching and parsing in a TimerTask, so that I could
show a "Loading..." message while that is happening. After lots of
debugging, I realized that the application hangs on
mListAdapter.add(mCurName), where mListAdapter is an
ArrayAdapter<CharSequence> and mCurName is a String. This instruction
worked before using a TimerTask, but now it just stops execution
without any exception or anything. I have tried creating the Timer
with both new Timer(true) and new Timer(false), but nothing seems to
work.
Note: the mListAdapter.add(mCurName) call is actually made in a
function within my main Activity class, which, in turn, is called from
the run() function inside the TimerTask class that is defined within
my main Activity class. Just to make sure I made sense, here's a
sketch of my code:
public class MyActivity extends Activity {
// vars...
protected void onCreate(Bundle savedInstanceState) {
// stuff...
Timer timer = new Timer(true);
SearchTask task = new SearchTask();
timer.schedule(task, 1);
}
public void run() {
// stuff...
mResultList = parseResponseXml(responseXml);
// other stuff, but execution never reaches this point...
}
public class XmlHandler extends DefaultHandler {
// vars...
public void startElement(...) {...}
public void characters(...) {...}
public void endElement(String uri, String name, String qName) {
// stuff...
if (name == "resource") {
inResource = false;
if (inResults) { // this is where the problem is
Log.i("TasteKidDebug", "Before
mListAdapter.add"); // this gets logged
mListAdapter.add(mCurName);
Log.i("TasteKidDebug", "After
mListAdapter.add"); // this doesn't
mResults.add(mCurName, mCurType);
}
}
// stuff..
}
}
public ResourceList parseResponseXml(String xml) throws Exception {
// stuff...
XmlHandler handler = new XmlHandler();
xr.setContentHandler(handler);
xr.parse(new InputSource(new StringReader(xml)));
return handler.mResults;
}
}
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