首先在xml文件添加Spinner控件：

复制代码 代码如下:

<Spinner

android:id="@+id/mySpinner"

android:layout_height="wrap_content"

android:layout_width="fill_parent"

/>

在Activity中写：

复制代码 代码如下:

package com.example.spinner;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemSelectedListener;

import android.widget.ArrayAdapter;

import android.widget.Spinner;

import android.widget.Toast;

public class MainActivity extends Activity {

private Spinner spinner;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

spinner = (Spinner)this.findViewById(R.id.mySpinner);

//设置数据源

String[] mydata = {"北京", "上海","广东","广西"};

//声明一个ArrayAdapter，并将数据源与之关联起来

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,mydata);

//设置弹出下拉列表的风格

adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

//将arrayAdapter对象添加进Spinner去

spinner.setAdapter(adapter);

//添加监听器

spinner.setOnItemSelectedListener(new OnItemSelectedListener() {

@Override

public void onItemSelected(AdapterView<?> arg0, View arg1,

int arg2, long arg3) {

Toast.makeText(MainActivity.this, "选择了：" + arg2, Toast.LENGTH_SHORT).show();

}

@Override

public void onNothingSelected(AdapterView<?> arg0) {

// TODO Auto-generated method stub

}

});

}

}