package fry;

import com.example.SpinnerDemo.R;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.Spinner;

public class Activity01 extends Activity{
    private Spinner spinner1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity01);
        
        spinner1=(Spinner) findViewById(R.id.spinner1);
        
        initSpinner1();
    }
    public void initSpinner1(){
        String[] city=new String[]{"北京","上海","香港","澳门"};
        ArrayAdapter<String> adapter=new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, city);
        spinner1.setAdapter(adapter);
    }
}

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_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 
13 </LinearLayout>