Android data in ListView

Question

I am developing this contacts app. So far i have generated a ListView witch has contact name and phone number. When you click on contact it starts new activity and shows contact name and phone number.

What I wanna do is that the ListView I have shows only contact names and when you click on contact in the list then the activity starts and you can see both name and number.

I thought maybe I can hide some of the information in ListView but I haven´t found anything good on that.

So does anybody have any suggestions?

Thanks in advance.

Answer 1

First of all, query only contact name and id:

In your manifest you have to declare

<uses-permission android:name="android.permission.READ_CONTACTS" />

public Loader<Cursor> onCreateLoader(int loaderID, Bundle bundle){
       Uri uri                = ContactsContract.Contacts.CONTENT_URI;
       String[] projection    = new String[] { ContactsContract.Contacts._ID,
                                    ContactsContract.Contacts.DISPLAY_NAME};
       String sortOrder       = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";

        // Returns a new CursorLoader
        return new CursorLoader(
                    getActivity(),   // Parent activity context
                    uri,        // Table to query
                    projection,     // Projection to return
                    null,            // No selection clause
                    null,            // No selection arguments
                    sortOrder        // Sort by name
    );

}

Once you got the Cursor with contacts you have to pass that in a CursorAdapter

private final static String[] FROM_COLUMNS = {
        Build.VERSION.SDK_INT
                >= Build.VERSION_CODES.HONEYCOMB ?
                Contacts.DISPLAY_NAME_PRIMARY :
                Contacts.DISPLAY_NAME
};
private final static int[] TO_IDS = {
       android.R.id.text1
};


public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    ...
    // Gets the ListView from the View list of the parent activity
    mContactsList =
        (ListView) getActivity().findViewById(R.layout.contact_list_view);
    // Gets a CursorAdapter
    mCursorAdapter = new SimpleCursorAdapter(
            getActivity(),
            R.layout.contact_list_item,
            null,
            FROM_COLUMNS, TO_IDS,
            0);
    // Sets the adapter for the ListView
    mContactsList.setAdapter(mCursorAdapter);

    // Prepare the loader.  Either re-connect with an existing one,
    // or start a new one.
    getLoaderManager().initLoader(0, null, this);

}

public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
    // Swap the new cursor in.  (The framework will take care of closing the
    // old cursor once we return.)
    mAdapter.swapCursor(data);

    // The list should now be shown.
    if (isResumed()) {
        setListShown(true);
    } else {
        setListShownNoAnimation(true);
    }
}