CursorPagerAdapter that doesn't need projection. Added changeCursor method that closes old cursor after swapping

CursorPagerAdapter

package com.t3methods.happysmiles.app.ui.adapters;

import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;

public class CursorPagerAdapter<F extends Fragment> extends FragmentStatePagerAdapter
{
    private final Class<? extends F> mFragmentClass;
    private       Cursor             mCursor;

    public CursorPagerAdapter( FragmentManager fm, Class<? extends F> fragmentClass, Cursor cursor )
    {
        super( fm );
        this.mFragmentClass = fragmentClass;
        this.mCursor = cursor;
    }

    @Override
    public F getItem( int position )
    {
        if( mCursor == null ) // shouldn't happen
            return null;

        mCursor.moveToPosition( position );
        F frag;
        try
        {
            frag = mFragmentClass.newInstance();
        }
        catch( Exception ex )
        {
            throw new RuntimeException( ex );
        }
        Bundle args = new Bundle();
        for( int i = 0; i < mCursor.getColumnNames().length; ++i )
        {
            // Get the type of field so the arguments can be properly set.
            int type = mCursor.getType( i );
            switch( type )
            {
                case Cursor.FIELD_TYPE_BLOB:
                    args.putByteArray( mCursor.getColumnName( i ), mCursor.getBlob( i ) );
                    break;
                case Cursor.FIELD_TYPE_FLOAT:
                    args.putFloat( mCursor.getColumnName( i ), mCursor.getLong( i ) );
                    break;
                case Cursor.FIELD_TYPE_INTEGER:
                    args.putInt( mCursor.getColumnName( i ), mCursor.getInt( i ) );
                    break;
                case Cursor.FIELD_TYPE_STRING:
                    args.putString( mCursor.getColumnName( i ), mCursor.getString( i ) );
                    break;
                default:
                    break;
            }
        }
        frag.setArguments( args );
        return frag;
    }

    @Override
    public int getCount()
    {
        if( mCursor == null )
            return 0;
        else
            return mCursor.getCount();
    }

    public void changeCursor( Cursor c )
    {
        Cursor old = swapCursor( c );
        if( null != old ) old.close();
    }

    public Cursor swapCursor( Cursor c )
    {
        if( mCursor == c )
            return null;
        Cursor oldCursor = mCursor;

        this.mCursor = c;
        notifyDataSetChanged();
        return oldCursor;
    }

    public Cursor getCursor()
    {
        return mCursor;
    }
}