Android ListView加载两种不同的item

有时候当我们使用ListView组件时，想使它加载不同的item项，以达到更加完美的效果

实现:

1.首先定义主布局文件main.xml

<?xml version="1.0" encoding="utf-8"?>  

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  

android:layout_width="fill_parent"  

android:layout_height="fill_parent"  

android:background="#ffffff"  

android:orientation="vertical" >  

<ListView  

android:id="@+id/listView_list"  

  android:layout_width="match_parent"  

android:layout_height="wrap_content" >  

</ListView>  

</LinearLayout>  

其中定义一个ListView

2.因为要加载两个item，所以当实现两个item

addexam_list_item1.xml

<?xml version="1.0" encoding="utf-8"?>  

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  

android:layout_width="fill_parent"  

android:layout_height="wrap_content"  

android:orientation="horizontal"   

android:padding="5dip">  

<ImageView  

android:id="@+id/addexam_list_icon"  

android:background="@drawable/ic_launcher"  

android:layout_width="wrap_content"  

android:layout_height="wrap_content"/>  

<TextView  

android:id="@+id/addexam_list_item_text"  

android:layout_width="wrap_content"  

android:layout_height="wrap_content"  

android:layout_gravity="center"  

android:layout_marginLeft="10dp"  

android:text="测试数据"/>  
</LinearLayout>

addexam_list_item2.xml

<?xml version="1.0" encoding="utf-8"?>  

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  

android:layout_width="fill_parent"  

android:layout_height="wrap_content"  

android:background="#666666"  

android:paddingLeft="10dp"  

android:gravity="center_vertical"  

android:orientation="vertical" >  
  <TextView  

android:id="@+id/addexam_list_item_text"  

android:layout_width="wrap_content"  

android:layout_height="20dip"  

android:textColor="#ffffff"  

android:text="数据测试"  

android:gravity="center_vertical"/>  

</LinearLayout>

3.在程序中处理布局

public class TestActivity extends Activity {  

private List<String>  list=null;  

private List<String> groupkey=new ArrayList<String>();  

private List<String> aList = new ArrayList<String>();  

private List<String> bList = new ArrayList<String>();  

private ListView listview;  

@Override  

public void onCreate(Bundle savedInstanceState) {  

super.onCreate(savedInstanceState);  

setContentView(R.layout.main);  

listview=(ListView) findViewById(R.id.listView_list);  

initData();  

MyAdapter adapter=new MyAdapter();  

listview.setAdapter(adapter);  
          
    }  

public void initData(){  

list = new ArrayList<String>();  

groupkey.add("A组");  

groupkey.add("B组");   

for(int i=0; i<5; i++){  

aList.add("A组"+i);  

}  

list.add("A组");  

list.addAll(aList);  

  for(int i=0; i<8; i++){  

bList.add("B组"+i);  

}  

  list.add("B组");  

list.addAll(bList);  

}  

private class MyAdapter extends BaseAdapter{  

@Override  

public int getCount() {  

return list.size();  

}  

        @Override  

public Object getItem(int position) {  

return list.get(position);  

  }  

        @Override  
        public long getItemId(int position) {  

return position;

}  
        @Override  

public boolean isEnabled(int position) {  

if(groupkey.contains(getItem(position))){  

return false;  
}  

return super.isEnabled(position);  

}  
        @Override  

public View getView(int position, View convertView, ViewGroup parent) {  

View view=convertView;  

if(groupkey.contains(getItem(position))){  

view=LayoutInflater.from(getApplicationContext()).inflate(R.layout.addexam_list_item1, null); 

}else{

view=LayoutInflater.from(getApplicationContext()).inflate(R.layout.addexam_list_item2, null);

}  

TextView text=(TextView) view.findViewById(R.id.addexam_list_item_text); 

 text.setText((CharSequence) getItem(position));  

  return view;  

}

 }  

}