CursorPagerAdapter.java

package com.meetup.adapter;

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<F> fragmentClass;
    private final String[] projection;
    private Cursor cursor;

    public CursorPagerAdapter(FragmentManager fm, Class<F> fragmentClass, String[] projection, Cursor cursor) {
        super(fm);
        this.fragmentClass = fragmentClass;
        this.projection = projection;
        this.cursor = cursor;
    }

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

        cursor.moveToPosition(position);
        F frag;
        try {
            frag = fragmentClass.newInstance();
        } catch (Exception ex) {
            throw new RuntimeException(ex);
        }
        Bundle args = new Bundle();
        for (int i = 0; i < projection.length; ++i) {
            args.putString(projection[i], cursor.getString(i));
        }
        frag.setArguments(args);
        return frag;
    }

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

    public void swapCursor(Cursor c) {
        if (cursor == c)
            return;

        this.cursor = c;
        notifyDataSetChanged();
    }

    public Cursor getCursor() {
        return cursor;
    }
}

Looks like exactly what I'm looking for but I wish I could see the class that calls this adapter.

You saved me a lot of time sir, thanks!

i need help
how to implement that in FragmentActivity

Thanks for this code, it works great, although I adapted it a bit as I didn't need the generic version. I use it with a loader and loader callbacks in the support library, and the method names make it easy to use instead of a standard adapter.

I would add:

public Cursor swapCursor(Cursor newCursor)
{
    if (cursor == newCursor)
    {
        return null;
    }

    Cursor oldCursor = cursor;

    this.cursor = newCursor;
    notifyDataSetChanged();

    return oldCursor;
}

/**
 * Change the underlying cursor to a new cursor. If there is an existing cursor it will be
 * closed.
 *
 * @param cursor The new cursor to be used
 */
public void changeCursor(Cursor cursor)
{
    Cursor old = swapCursor(cursor);
    if (old != null)
    {
        old.close();
    }
}