AutoCompleteTextView populated by contacts using CursorLoader

Question

I'm trying to make an AutoCompleteTextView witch will complete user input from the contacts list, I made it but it caused a big preformence damage.

I tried to use CursorLoader (https://developer.android.com/training/load-data-background/setup-loader.html)

the app is now force closing:

 07-30 05:02:45.034: E/AndroidRuntime(1396): FATAL EXCEPTION: main
 07-30 05:02:45.034: E/AndroidRuntime(1396): java.lang.ClassCastException:  
 android.content.CursorLoader cannot be cast to android.database.Cursor 

CODE:

@Override
public Loader<Cursor> onCreateLoader(int loaderID, Bundle bundle)
{
    /*
     * Takes action based on the ID of the Loader that's being created
     */
    switch (loaderID) {
        case NAMES_LOADER:
            // Returns a new CursorLoader
            CursorLoader peopleCursor = new CursorLoader(
                        context,   // Parent activity context
                        ContactsContract.Contacts.CONTENT_URI,        // Table to query
                        null,     // Projection to return
                        null,            // No selection clause
                        null,            // No selection arguments
                        null             // Default sort order
        );

            while (((Cursor) peopleCursor).moveToNext()) {
                contactName = ((Cursor) peopleCursor).getString(((Cursor)  peopleCursor)
                        .getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
               contactId = ((Cursor) peopleCursor).getString(((Cursor) peopleCursor)
                        .getColumnIndex(ContactsContract.Contacts._ID));
                hasPhone = ((Cursor) peopleCursor)
                        .getString(((Cursor) peopleCursor)
                                .getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
            }



        case PHONES_LOADER:
             if ((Integer.parseInt(hasPhone) > 0)){
            CursorLoader phonesCursor = new CursorLoader(
                    context, // Parent activity context
                    ContactsContract.CommonDataKinds.Phone.CONTENT_URI,        // Table to query
                    null,
                    ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ contactId, // Projection to return
                    null,            // No selection clause
                    null            // No selection arguments
                                 // Default sort order
    );

            while (((Cursor) phonesCursor).moveToNext()){
                //store numbers and display a dialog letting the user select which.
                String phoneNumber = ((Cursor) phonesCursor).getString(
                        ((Cursor) phonesCursor).getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                Map<String, String> NamePhoneType = new ContactMap();
                NamePhoneType.put("Name", contactName);
                NamePhoneType.put("Phone", phoneNumber);

                    mPeopleList.add(NamePhoneType);
            }

             }
        default:
            // An invalid id was passed in
            return null;
    }
}  

this is the error part:

 while (((Cursor) peopleCursor).moveToNext()) {
            contactName = ((Cursor) peopleCursor).getString(((Cursor)  peopleCursor)
                    .getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
           contactId = ((Cursor) peopleCursor).getString(((Cursor) peopleCursor)
                    .getColumnIndex(ContactsContract.Contacts._ID));
            hasPhone = ((Cursor) peopleCursor)
                    .getString(((Cursor) peopleCursor)
                            .getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
        }

the error is because I'm casting Cursor to CursorLoader, I cant find another way to do it because the methhoodes I need are not avalible in the type CursorLoader.

does anyone have a solution? or another way to auto complete contacts without damaging preformence? thanks!

Answer 1

Since no one else has offered an answer, let me suggest populating your array in onLoaderFinish after the cursor has been created. The Cursor Loader is essentially a query statement and not the results, which is why you can't cast from a CursorLoader to a Cursor.