Android动态加载ListView中的Item

我这周上网看到动态增加listview的每一项item的布局，今天抽空自己写了一个，方便自己日后使用，这个效果还是很不错的，用到了Adapter的notifyDataSetChanged()方法，当点击每一个Item的时候，就通知adapter更新getView，系统得到通知就相应的加载一遍布局，就达到了动态加载item布局的效果。希望给大家带来点启迪，有问题或想要代码的可以留言，欢迎大家留言谈论listview的一些知识，以求共同进步，转载请标明出处：

http://blog.****.net/wdaming1986/article/details/6787455

程序开启界面，默认选中贝贝item，                   点击晶晶后的界面的效果，

                 

点击欢欢后界面的效果：                                      点击迎迎后界面的效果：

                 

点击妮妮后界面的效果：

代码奉上，真理还得看代码：

在ListViewRunDemo工程中，

com.cn.daming包中的MainActivity.java类中的代码：

1. package com.cn.daming;  
   
   import android.app.ListActivity;
   import android.content.Context;
   import android.os.Bundle;
   import android.view.Gravity;
   import android.view.LayoutInflater;
   import android.view.View;
   import android.view.ViewGroup;
   import android.widget.AdapterView;
   import android.widget.AdapterView.OnItemClickListener;
   import android.widget.BaseAdapter;
   import android.widget.ImageView;
   import android.widget.LinearLayout;
   import android.widget.TextView;  
   
   public class MainActivity extends ListActivity {  
   
       private ListAddLayoutAdapter mAdapter;
       @SuppressWarnings("unused")
       private LayoutInflater lInflater;;  
   
       int[] image = {
               R.drawable.s_beibei,
               R.drawable.s_jingjing,
               R.drawable.s_huanhuan,
               R.drawable.s_yingying,
               R.drawable.s_nini
           };  
   
       String[] show_name = {
               "贝贝",
               "晶晶",
               "欢欢",
               "迎迎",
               "妮妮"
           };  
   
       private int id = 0;
       @SuppressWarnings("unused")
       private int last = 0;   
   
       @Override
       public void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           mAdapter = new ListAddLayoutAdapter(this);
           this.setListAdapter(mAdapter);  
   
           this.getListView().setOnItemClickListener(new OnItemClickListener(){
               public void onItemClick(AdapterView<?> arg0, View arg1, int position,
                       long arg3) {
                   id = position;
                   mAdapter.notifyDataSetChanged();
                   last = position;
               }
           });
       }  
   
        public class ListAddLayoutAdapter extends BaseAdapter {  
   
           private Context context;
           private MainActivity activity;   
   
           public ListAddLayoutAdapter(Context context) {
               this.context = context;
               this.activity = (MainActivity)context;
               lInflater = activity.getLayoutInflater();
           }  
   
           public int getCount() {
               return image.length;
           }  
   
           public Object getItem(int arg0) {
               return null;
           }  
   
           public long getItemId(int position) {
               return position;
           }  
   
           public View getView(int position, View arg1, ViewGroup arg2) {
               LinearLayout layout = new LinearLayout(context);
               layout.setOrientation(LinearLayout.VERTICAL);
               layout.setPadding(0, 8, 0, 8);  
   
               layout.addView(addTitleView(position));  
   
               if(id==position){
                   layout.addView(addCustomView(position));
               }  
   
               return layout;
           }  
   
           public View addTitleView(int i){
               LinearLayout layout = new LinearLayout(context);
               layout.setOrientation(LinearLayout.HORIZONTAL);  
   
               ImageView iv = new ImageView(context);
               iv.setImageResource(image[i]);
               layout.addView(iv,
                       new LinearLayout.LayoutParams(
                               LinearLayout.LayoutParams.WRAP_CONTENT,
                               LinearLayout.LayoutParams.WRAP_CONTENT));  
   
               TextView tv = new TextView(context);
               tv.setText(show_name[i]);
               tv.setTextSize(18f);
               layout.addView(tv,
                       new LinearLayout.LayoutParams(
                               LinearLayout.LayoutParams.WRAP_CONTENT,
                               LinearLayout.LayoutParams.WRAP_CONTENT));  
   
               layout.setGravity(Gravity.CENTER);
               return layout;
           }  
   
           public View addCustomView(int i){
               View view = new View(context);  
   
               switch(i){
                   case 0:
                       ImageView iv1 = new ImageView(context);
                       iv1.setImageResource(R.drawable.beibei);
                       view = iv1;
                       break;  
   
                   case 1:
                       ImageView iv2 = new ImageView(context);
                       iv2.setImageResource(R.drawable.jingjing);
                       view = iv2;
                       break;  
   
                   case 2:
                       ImageView iv3= new ImageView(context);
                       iv3.setImageResource(R.drawable.huanhuan);
                       view = iv3;
                       break;
                   case 3:
                       ImageView iv4 = new ImageView(context);
                       iv4.setImageResource(R.drawable.yingying);
                       view = iv4;
                       break;
                   case 4:
                       ImageView iv5 = new ImageView(context);
                       iv5.setImageResource(R.drawable.nini);
                       view = iv5;
                       break;
               }
               return view;
            }
        }
   }  

说明：也可以动态加载布局文件也可以的：

在addCustomView（）方法中这么写也是可以的：

[java] view plaincopyprint?

工程的图片没有上传，希望大家自己找些图片就可以了：