I'm having issues populating my listview. I thought I had modifed my XML and adapters accordingly but apparently not. When the activity is loaded the dialog pops up stating it's loading then the app force closes. If i remove the 3 lines of coding stating listview.setText(name) then it just loads all the items with the default text in my XML file. My code looks like this:
public class DisplayServiceActivity extends ListActivity {
private ListView listOfServices;
//JSONArrays?
JSONArray directory;
//JSON Node names
private static String TAG_ID = "id";
private static String TAG_NAME= "name";
private static String TAG_DIRECTORY = "Categories";
private final static String url= "API LINK HERE";
JSONObject json;
jsonParser jParser = new jsonParser();
ArrayList<HashMap<String, String>> directoryList;
@SuppressLint("NewApi")
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.service);
directoryList = new ArrayList<HashMap<String, String>>();
Request request = new Request();
request.execute();
listOfServices = getListView(); //get builtin listView
// Make sure we're running on Honeycomb or higher to use ActionBar APIs
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
// Show the Up button in the action bar.
getActionBar().setDisplayHomeAsUpEnabled(true);
setTitle("Home Service Categories");
}
}// end of onCreate Method
@SuppressWarnings("unused")
public class Request extends AsyncTask<String, Void, JSONObject> {
private static final int REGISTRATION_TIMEOUT = 3 * 1000;
private static final int WAIT_TIMEOUT = 30 * 1000;
private ProgressDialog dialog =
new ProgressDialog(DisplayServiceActivity.this);
protected void onPreExecute() {
dialog = new ProgressDialog(DisplayServiceActivity.this);
dialog.setMessage("Getting your info real quick... Please wait...");
dialog.show();
}
protected JSONObject doInBackground(String... params) {
json = jParser.getJSONfromURL(url);
return json;
}
protected void onPostExecute(JSONObject s) {
super.onPostExecute(s);
String name = null;
String id = null;
dialog.dismiss();
try {
directory = s.getJSONArray("Categories");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
for(int i = 0; i< directory.length(); i++){;
try {
id = directory.getJSONObject(i).getString(TAG_ID);
name = directory.getJSONObject(i).getString(TAG_NAME);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
displayCatList(id, name);
}
}
}
public void displayCatList(String id, String name){
//create new HashMap
HashMap<String,String> map = new HashMap<String, String>();
//add each child node to HashMap key
//map.put(TAG_ID, id);
map.put(TAG_NAME, name);
//adding HashList to ArrarList
directoryList.add(map);
// set Adapter for ListView here
ListAdapter adapter = new SimpleAdapter(this,
directoryList,
R.layout.list_item,
new String[] { name },
new int[] { android.R.id.text1});
LayoutInflater inflator = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflator.inflate(R.layout.list_item, null);
TextView listName = (TextView) v.findViewById(R.id.listName);
listName.setText(name);
setListAdapter(adapter);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
NavUtils.navigateUpFromSameTask(this);
return true;
}
return super.onOptionsItemSelected(item);
}
}
List_item.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- Single List Item Design -->
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/listName"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="rubble rubble rubble"
android:textColor="#FFFFFF"
android:padding="10dip"
android:textSize="20dip"
android:textStyle="bold" >
</TextView>
services.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/gradient"
android:orientation="vertical" >
<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
<TextView
android:id="@+id/listName"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dip"
android:text="rubble rubble rubble"
android:textColor="#FFFFFF"
android:textSize="20dip"
android:textStyle="bold" >
</TextView>
</LinearLayout>
// Change display methods
public void displayCatList(String id, String name){
//create new HashMap
HashMap<String,String> map = new HashMap<String, String>();
//add each child node to HashMap key
//map.put(TAG_ID, id);
map.put(TAG_NAME, name);
//adding HashList to ArrarList
directoryList.add(map);
MySimpleAdapter adapter = new MySimpleAdapter(this, R.layout.list_item, android.R.id.text1, directoryList);
setListAdapter(adapter);
adapter.notifyDataSetChanged();
}
// add folloowing class in activity
public class MySimpleAdapter extends ArrayAdapter<HashMap<String, String>> {
List<HashMap<String, String>> listItems;
public MySimpleAdapter(Context context, int resource,
int textViewResourceId, List<HashMap<String, String>> objects) {
super(context, resource, textViewResourceId, objects);
listItems = objects;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
if(convertView == null) {
LayoutInflater inflator = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflator.inflate(R.layout.list_item, null);
}
TextView listName = (TextView) convertView.findViewById(R.id.listName);
listName.setText(listItems.get(position).get(TAG_NAME));
return convertView;
}
}