获取Spinner的选中项的值

package my.aborder2;

import java.io.Serializable;

public class Customer implements Serializable {
    
    private int id;
    
    private String name;
   
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    
    public String getName() { 
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
  
    
}

package my.aborder2;


import java.util.List;

import android.content.Context;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLongClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.EditText;

public class CustomerAdapter extends BaseAdapter {
	private List customers;
	Context context;
	
	public CustomerAdapter(Context context,List customers){
		this.customers = customers;
		this.context = context;
	}

	@Override
	public int getCount() {
		return (customers==null)?0:customers.size();
	}

	@Override
	public Object getItem(int position) {
		return customers.get(position);
	}

	@Override
	public long getItemId(int position) {
		return position;
	}
	
	
	public class ViewHolder{
		TextView textViewItem01;
		TextView textViewItem02;
		TextView textViewItem03;
		
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		final Customer customer = (Customer)getItem(position);
		ViewHolder viewHolder = null;
		if(convertView==null){
			Log.d("MyBaseAdapter", "新建convertView,position="+position);
			convertView = LayoutInflater.from(context).inflate(
					R.layout.list_view01_item, null);
			
			viewHolder = new ViewHolder();
			viewHolder.textViewItem01 = (TextView)convertView.findViewById(
					R.id.listView01Item01);
			viewHolder.textViewItem02 = (TextView)convertView.findViewById(
					R.id.listView01Item02);
			viewHolder.textViewItem03 = (TextView)convertView.findViewById(
					R.id.listView01Item03);
			
			
			
			
			convertView.setTag(viewHolder);
		}else{
			viewHolder = (ViewHolder)convertView.getTag();
			Log.d("MyBaseAdapter", "旧的convertView,position="+position);
		}
		
		viewHolder.textViewItem01.setText(String.valueOf(customer.getId()));
		viewHolder.textViewItem02.setText(customer.getName());
		viewHolder.textViewItem03.setText(customer.getName());
		
		
		
		
		
		return convertView;
	}

}

sp1 = (Spinner) findViewById(R.id.querysxspinner1);
		Customer c1 = new Customer();
		c1.setId(1);
		c1.setName("mei");
		
		Customer c2 = new Customer();
		c2.setId(2);
		c2.setName("sdfffffff");
		List lc = new ArrayList();
		lc.add(c1);
		lc.add(c2);
		sp1.setAdapter(new CustomerAdapter(this, lc));

	Customer cu=(Customer)sp1.getSelectedItem();
				String s=cu.getName();
				et1.setText(s);