CsvFieldAdapter.java

package com.evancharlton.mileage.adapters;

import com.evancharlton.mileage.R;
import com.evancharlton.mileage.provider.tables.FillupsTable;

import android.content.Context;
import android.database.DataSetObserver;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.SpinnerAdapter;
import android.widget.TextView;

public class CsvFieldAdapter implements SpinnerAdapter {
    private final LayoutInflater mInflater;

    public CsvFieldAdapter(Context context) {
        mInflater = LayoutInflater.from(context);
    }

    @Override
    public View getDropDownView(int position, View convertView, ViewGroup parent) {
        if (convertView == null) {
            convertView = mInflater.inflate(android.R.layout.simple_dropdown_item_1line, parent,
                    false);
        }

        Holder holder = (Holder) convertView.getTag();
        if (holder == null) {
            holder = new Holder((TextView) convertView.findViewById(android.R.id.text1));
            convertView.setTag(holder);
        }
        holder.text.setText(getText(position));

        return convertView;
    }

    @Override
    public int getCount() {
        return FillupsTable.PROJECTION.length + 1;
    }

    @Override
    public Object getItem(int position) {
        if (position == FillupsTable.PROJECTION.length) {
            return "skip";
        }
        return FillupsTable.PROJECTION[position];
    }

    @Override
    public long getItemId(int position) {
        return getItem(position).hashCode();
    }

    private int getText(int position) {
        if (position == FillupsTable.PLAINTEXT.length) {
            return R.string.column_none;
        }
        return FillupsTable.PLAINTEXT[position];
    }

    @Override
    public int getItemViewType(int position) {
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (convertView == null) {
            convertView = mInflater.inflate(android.R.layout.simple_spinner_item, parent, false);
        }

        TextView tv = (TextView) convertView.getTag();
        if (tv == null) {
            tv = (TextView) convertView.findViewById(android.R.id.text1);
            convertView.setTag(tv);
        }
        tv.setText(getText(position));

        return convertView;
    }

    @Override
    public int getViewTypeCount() {
        return 1;
    }

    @Override
    public boolean hasStableIds() {
        return true;
    }

    @Override
    public boolean isEmpty() {
        return false;
    }

    @Override
    public void registerDataSetObserver(DataSetObserver observer) {
        // TODO Auto-generated method stub

    }

    @Override
    public void unregisterDataSetObserver(DataSetObserver observer) {
        // TODO Auto-generated method stub

    }

    private static class Holder {
        public final TextView text;

        public Holder(TextView text) {
            this.text = text;
        }
    }
}