實現效果如下：

1.實現程式碼

package com.example.testspanner;

import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.Spinner;


public class MainActivity extends Activity {
private Spinner spinner;
private
 
 List<String> data_list;
private ArrayAdapter<String> arr_adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.spinner);
        spinner = (Spinner) findViewById(R.id.spinner);

        //資料
 

        data_list = new ArrayList<String>();
        data_list.add("北京");
        data_list.add("上海");
        data_list.add("廣州");
        data_list.add("深圳");

        //介面卡
        arr_adapter= new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, data_list);
        //設定樣式
 

        arr_adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        //載入介面卡
        spinner.setAdapter(arr_adapter);

    }

}

2.佈局檔案

<Spinner 
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/spinner"
  />