datamodel.java

Google Android应用框架原理与程序设计 第三版(中文高清PDF)高焕堂

package com.misoo.ex05;

public class DataModel {
   private String[] data, xdata;
   private double[] price;
   private boolean k = true;
   public DataModel()
   {
	   data = new String[3];
	   data[0] = "Item-1";   data[1] = "Item-2";
	   data[2] = "Item-3";
	   //---------------------------
	   xdata = new String[3];
	   xdata[0] = "Prod-x";   xdata[1] = "Prod-y";
	   xdata[2] = "Prod-z";
       //----------------------------
	   price = new double[3];
	   price[0] = 305.5;   price[1] = 56.75;
	   price[2] = 100.25;
	   //---------------------------
   }
   public String[] loadData()
   {
	   k = !k;
	   if(k)  return xdata;
	   else return data;
   }
   public double getPrice(int i)
   {
	   return price[i];
   }
}