I have a question.
I am programming a application to add records to a Content Provider.
The content provider is working perfectly.
My problem is when I tried to insert some data into the listview. It inserts, but I'm not able to see the data(Except that I restart the app).
I was calling notifydatasetchanged from the adapter but it didn't work.
public class MainActivity extends Activity implements
LoaderManager.LoaderCallbacks<Cursor> {
ListView listContacts;
ListView listView;
Button addContactButton;
MyAdapter adapter;
ContentValues values;
ContentResolver contentResolver;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
contentResolver = getContentResolver();
listView = (ListView) findViewById(R.id.listView1);
values = new ContentValues();
getLoaderManager().initLoader(0, null, this);
addContactButton = (Button) findViewById(R.id.button1);
addContactButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
final Dialog dialogForm = new Dialog(v.getContext());
dialogForm.setTitle("Add a new Address");
dialogForm.setContentView(R.layout.dialog);
dialogForm.show();
Button saveButton = (Button) dialogForm
.findViewById(R.id.saveButton);
final EditText addressEditText = (EditText) dialogForm
.findViewById(R.id.addressEditText);
saveButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
try {
values.put(Contract.DATA, addressEditText.getText()
.toString());
contentResolver.insert(
Contract.CONTENT_URI, values);
values.clear();
dialogForm.dismiss();
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
((MyAdapter)listView.getAdapter()).notifyDataSetChanged() ;
}
});
}
@Override
public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
return new CursorLoader(this, Contract.CONTENT_URI, null, null, null,
null);
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
adapter = new MyAdapter(this, R.layout.list_item, cursor, 0);
listView.setAdapter(adapter);
adapter.swapCursor(cursor);
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
adapter.swapCursor(null);
}
}
Can someone give me a clue about this problem?
Also, I have another question. Is efficient the implementation of onLoadFinished method?
Greetings