[转]Android中Spinner下拉列表（使用ArrayAdapter和自定义Adapter实现）

 1 <span style="font-size:16px;"><?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="fill_parent"
 4     android:layout_height="fill_parent"
 5     android:orientation="vertical" >
 6  
 7     <Spinner
 8         android:id="@+id/spinner1"
 9         android:layout_width="match_parent"
10         android:layout_height="wrap_content"
11       />
12 </LinearLayout></span>

1 <span style="font-size:16px;"><?xml version="1.0" encoding="utf-8"?>
2 <resources>
3     <string-array name="spinnername">
4         <item>北京</item>
5         <item>上海 </item>
6         <item>广州</item>
7         <item>深圳</item>
8     </string-array>
9 </resources></span>

       // 初始化控件
mSpinner = (Spinner) findViewById(R.id.spinner1);
// 建立数据源
String[] mItems = getResources().getStringArray(R.array.spinnername);
// 建立Adapter并且绑定数据源
ArrayAdapter<String> _Adapter=new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, mItems);
//绑定 Adapter到控件
mSpinner.setAdapter(_Adapter);

mSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> parent, View view,
            int position, long id) {
        String str=parent.getItemAtPosition(position).toString();
        Toast.makeText(SpinnerActivity.this, "你点击的是:"+str, 2000).show();
    }
    @Override
    public void onNothingSelected(AdapterView<?> parent) {
        // TODO Auto-generated method stub
    }
});

<?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="horizontal" >
 
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:drawableLeft="@drawable/ic_launcher"
        android:paddingRight="8dip"
        android:paddingTop="8dip"
        android:text="TextView"
        android:textSize="25sp" />
 
    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="8dip"
        android:paddingTop="8dip"
        android:text="TextView"
        android:textSize="25sp" />
 
</LinearLayout>

 1 package com.jiangqq.csdn;
 2 public class Person {
 3     private String personName;
 4     private String personAddress;
 5     public Person(String personName, String personAddress) {
 6         super();
 7         this.personName = personName;
 8         this.personAddress = personAddress;
 9     }
10     public String getPersonName() {
11         return personName;
12     }
13     public void setPersonName(String personName) {
14         this.personName = personName;
15     }
16     public String getPersonAddress() {
17         return personAddress;
18     }
19     public void setPersonAddress(String personAddress) {
20         this.personAddress = personAddress;
21     }
22  
23 }

package com.jiangqq.csdn;
 
import java.util.List;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
 
/**
 * 自定义适配器类
 * @author jiangqq  <a href=http://blog.csdn.net/jiangqq781931404></a>
 *
 */
public class MyAdapter extends BaseAdapter {
    private List<Person> mList;
    private Context mContext;
 
    public MyAdapter(Context pContext, List<Person> pList) {
        this.mContext = pContext;
        this.mList = pList;
    }
 
    @Override
    public int getCount() {
        return mList.size();
    }
 
    @Override
    public Object getItem(int position) {
        return mList.get(position);
    }
 
    @Override
    public long getItemId(int position) {
        return position;
    }
    /**
     * 下面是重要代码
     */
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        LayoutInflater _LayoutInflater=LayoutInflater.from(mContext);
        convertView=_LayoutInflater.inflate(R.layout.item, null);
        if(convertView!=null)
        {
            TextView _TextView1=(TextView)convertView.findViewById(R.id.textView1);
            TextView _TextView2=(TextView)convertView.findViewById(R.id.textView2);
            _TextView1.setText(mList.get(position).getPersonName());
            _TextView2.setText(mList.get(position).getPersonAddress());
        }
        return convertView;
    }
}

       // 初始化控件
mSpinner = (Spinner) findViewById(R.id.spinner1);
// 建立数据源
List<Person>  persons=new ArrayList<Person>();
persons.add(new Person("张三", "上海 "));
persons.add(new Person("李四", "上海 "));
persons.add(new Person("王五", "北京" ));
persons.add(new Person("赵六", "广州 "));
//  建立Adapter绑定数据源
MyAdapter _MyAdapter=new MyAdapter(this, persons);
//绑定Adapter
mSpinner.setAdapter(_MyAdapter);