首先在xml文件添加Spinner控件：
在Activity中写：
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 adapter = new ArrayAdapter (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 } }); }}