第二周总结

本周学习了android的listview控件和适配器的用法。

package net.hnjdzy.tinyaccount.adapter;

import java.util.List;

import net.hnjdzy.tinyaccount.R;
import net.hnjdzy.tinyaccount.entity.AccountItem;

import android.app.Activity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

/**
 * 收入列表的适配器
 * @author androiddev@163.com,hnjdzy
 */
public class AccountItemAdapter extends BaseAdapter {
   private List<AccountItem> mItems;
   private LayoutInflater mInflater;

   //构造函数
   public AccountItemAdapter(List<AccountItem> items, Activity context){
      this.mItems = items;
      mInflater = LayoutInflater.from(context);
   }

   @Override
   public int getCount() {   //要显示的行数
      return this.mItems.size();
   }

   @Override
   public Object getItem(int arg0) {  //某行要显示的数据
      return this.mItems.get(arg0);
   }

   @Override
   public long getItemId(int arg0) {  //某行的数据ID
      return this.mItems.get(arg0).getId();
   }

   @Override
   public View getView(int arg0, View arg1, ViewGroup arg2) {
      //从布局填充得到一个view
      View view = this.mInflater.inflate(R.layout.list_view_item, null);

      //找到View上的组件
      TextView tvCategory = (TextView)view.findViewById(R.id.textViewCategory);
      TextView tvRemark = (TextView)view.findViewById(R.id.textViewRemark);
      TextView tvMoney = (TextView)view.findViewById(R.id.textViewMoney);
      TextView tvDate = (TextView)view.findViewById(R.id.textViewDate);
      ImageView imageView = (ImageView)view.findViewById(R.id.imageViewIcon);

      //把数据设置到对应的组件
      AccountItem item = this.mItems.get(arg0);
      tvCategory.setText(item.getCategory());
      tvRemark.setText(item.getRemark());
      tvMoney.setText(String.valueOf(item.getMoney()));
      tvDate.setText(item.getDate());
      int icon = R.drawable.baby_icon;  //测试
      if (icon>0){
         imageView.setImageResource(icon);
      }
      return view;
   }

}