Android Listview加载不同布局

转：http://www.cnblogs.com/1426837364qqcom/p/5336494.html

方法：

1. 通过BaseAdapter的getViewTypeCount()获取Item种类数量,然后在getView()方法中根据不同的type设置不同的item布局 (操作麻烦,维护方便)

2. 根据需求设置布局的显示隐藏效果 (操作方便,维护麻烦 )

下面展示第一种

主页面布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity" >    <ListView        android:id="@+id/lv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerHorizontal="true"        android:layout_centerVertical="true"       /></RelativeLayout>

第一种item布局（只有文字）

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <TextView         android:id="@+id/title"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="36sp"        android:background="#f00"        /></LinearLayout>

第二种item布局 （图片加文字）

package com.ch.baseadapterdemo;import java.util.ArrayList;import android.os.Bundle;import android.app.Activity;import android.view.LayoutInflater;import android.view.Menu;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.ListView;import android.widget.TextView;public class MainActivity extends Activity {    private ListView lv;    ArrayList<ItemB> bs = new ArrayList<ItemB>();        @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        lv = (ListView) findViewById(R.id.lv);        getData();        lv.setAdapter(new MyAdapter());    }    public void getData(){        bs.add(new ItemB(R.drawable.ic_launcher, "zzz0", 1));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz1", 1));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz2", 0));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz3", 1));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz4", 0));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz5", 1));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz6", 1));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz7", 1));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz8", 1));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz9", 0));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz10", 1));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz11", 1));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz13", 1));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz14", 0));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz15", 1));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz16", 0));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz17", 1));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz18", 0));        bs.add(new ItemB(R.drawable.ic_launcher, "zzz19", 1));    }    class MyAdapter extends BaseAdapter{          public static final int ITEM_TITLE = 0;          public static final int ITEM_INTRODUCE = 1;          LayoutInflater inflater = LayoutInflater.from(getApplicationContext());        @Override        public int getCount() {            // TODO Auto-generated method stub            return bs.size();        }        @Override        public Object getItem(int position) {            // TODO Auto-generated method stub            return bs.get(position);        }        @Override        public int getItemViewType(int position) {            // TODO Auto-generated method stub            //判断依据            return bs.get(position).getType();        }        @Override        public int getViewTypeCount() {            // TODO Auto-generated method stub            //布局个数            return 2;        }        @Override        public long getItemId(int position) {            // TODO Auto-generated method stub            return position;        }        @Override        public View getView(int position, View convertView, ViewGroup parent) {            // TODO Auto-generated method stub            int type = getItemViewType(position);            Holder1 holder1 = null;            Holder2 holder2 = null;            //优化            if (convertView == null) {                //选择某一个样式。。                switch (type) {                case ITEM_TITLE:                  convertView = inflater.inflate(R.layout.item_title, null);                  holder1 = new Holder1();                  holder1.play_title = (TextView) convertView.findViewById(R.id.title);                   //赋值                  holder1.play_title.setText(bs.get(position).getName());                  convertView.setTag(holder1);                  break;                case ITEM_INTRODUCE:                  convertView = inflater.inflate(R.layout.item_children,null);                  holder2 = new Holder2();                  holder2.play_info = (TextView) convertView.findViewById(R.id.info);                  holder2.play_img = (ImageView) convertView.findViewById(R.id.img);                   //赋值                  holder2.play_img.setBackgroundResource(bs.get(position).getImg());                 holder2.play_info.setText(bs.get(position).getName());                  convertView.setTag(holder2);                  break;                }              } else {                switch (type) {                case ITEM_TITLE:                  holder1 = (Holder1) convertView.getTag();                  holder1.play_title.setText(bs.get(position).getName());                  break;                case ITEM_INTRODUCE:                  holder2 = (Holder2) convertView.getTag();                  holder2.play_info.setText(bs.get(position).getName());                  holder2.play_img.setBackgroundResource(bs.get(position).getImg());                  break;                default:                  break;                }              }              return convertView;        }    }    // 两个样式 两个holder。100就写100holder。。当然你何以把他抽离出来这里先只为了说明问题      class Holder1 {        TextView play_title;      }      class Holder2 {        TextView play_info;        ImageView play_img;      }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.activity_main, menu);        return true;    }}

vo

package com.ch.baseadapterdemo;public class ItemB {    private int img;    private String name;    private int type;    public ItemB(int img, String name, int type) {        super();        this.img = img;        this.name = name;        this.type = type;    }    public int getImg() {        return img;    }    public void setImg(int img) {        this.img = img;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getType() {        return type;    }    public void setType(int type) {        this.type = type;    }

效果：