android控件14 Spinner

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1)/res/layout/main.xml

1)<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    ><Spinner android:id="@+id/spinner"android:layout_width="fill_parent"    android:layout_height="wrap_content"/></LinearLayout>

2）com.sxt.SpinnerActivity.java

package com.sxt;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.TextView;import android.widget.Toast;public class SpinnerActivity extends Activity {    /** Called when the activity is first created. */int selectIndex = 0;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        Spinner spinner = (Spinner)this.findViewById(R.id.spinner);        //定义数据        String [] data = new String[] {"江苏","浙江","安徽","辽宁","广东","西藏","台湾"};        //定义适配器(context,系统自带的显示样式,数据)        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,data);        //设置下拉样式        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);        spinner.setAdapter(adapter);        spinner.setOnItemSelectedListener(new OnItemSelectedListener(){        @Overridepublic void onItemSelected(AdapterView<?> parent, View v, int position,long id) {// TODO Auto-generated method stubselectIndex = position;Toast.makeText(SpinnerActivity.this, parent.getItemAtPosition(position).toString(), Toast.LENGTH_SHORT).show();}@Overridepublic void onNothingSelected(AdapterView<?> parent) {// TODO Auto-generated method stub}        });    }}

3)如图