MediaStore loader sortOrder example

MainActivity.java

import android.app.LoaderManager;
import android.content.CursorLoader;
import android.content.Loader;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;


public class MainActivity extends AppCompatActivity implements LoaderManager.LoaderCallbacks<Cursor> {

    private static final String LOG_TAG = MainActivity.class.getSimpleName();

    public static final int MEDIASTORE_LOADER = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getLoaderManager().initLoader(MEDIASTORE_LOADER, null, this);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @Override
    public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {

        String[] projection = new String[] {
                MediaStore.Images.ImageColumns._ID,
                MediaStore.Images.ImageColumns.TITLE
        };
        // Try changing the sort order here to ASC, filtering the logs by "MainActivity" for convenience.
        // You'll notice that the _ID value order changes depending on whether the sortOrder is ASC or DESC.
        String sortOrder = MediaStore.Images.ImageColumns._ID + " DESC";
        return new CursorLoader(this,
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                projection,
                null,
                null,
                sortOrder);
    }

    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
        while (cursor.moveToNext()) {
            int _id = cursor.getInt(0);
            String title = cursor.getString(1);
            Log.d(LOG_TAG, _id + " " + title);
        }

    }

    @Override
    public void onLoaderReset(Loader<Cursor> loader) {

    }
}