列表选择框spinner

MainActivity.java

package com.xwy.a;import android.support.v7.app.ActionBarActivity;import android.support.v7.app.ActionBar;import android.support.v4.app.Fragment;import android.app.Activity;import android.os.Bundle;import android.util.Log;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.Button;import android.widget.AdapterView.OnItemClickListener;import android.widget.Spinner;import android.widget.Toast;import android.os.Build;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.fragment_main);final Spinner spinner = (Spinner) findViewById(R.id.spinner1);/****************通过指定适配器的方式为选择列表框指定列表项********************///方法一//String[] ctype=new String[]{"身份证","学生证","军人证"};//ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,ctype);//方法二//ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(//this, R.array.ctype,android.R.layout.simple_dropdown_item_1line);//创建一个适配器////adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); // 为适配器设置列表框下拉时的选项样式//spinner.setAdapter(adapter); // 将适配器与选择列表框关联/***************************************************************************/// 为选择列表框添加OnItemSelectedListener事件监听spinner.setOnItemSelectedListener(new OnItemSelectedListener() {public void onItemSelected(AdapterView<?> parent, View arg1,int pos, long id) {String result = parent.getItemAtPosition(pos).toString(); // 获取选择项的值Log.i("Spinner示例", result);}public void onNothingSelected(AdapterView<?> arg0) {}});Button button = (Button) findViewById(R.id.button1);button.setOnClickListener(new OnClickListener() {public void onClick(View v) {Toast.makeText(MainActivity.this,"您选择的证件类型是：" + spinner.getSelectedItem().toString(),Toast.LENGTH_SHORT).show();}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// Handle action bar item clicks here. The action bar will// automatically handle clicks on the Home/Up button, so long// as you specify a parent activity in AndroidManifest.xml.int id = item.getItemId();if (id == R.id.action_settings) {return true;}return super.onOptionsItemSelected(item);}/** * A placeholder fragment containing a simple view. */public static class PlaceholderFragment extends Fragment {public PlaceholderFragment() {}@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {View rootView = inflater.inflate(R.layout.fragment_main, container,false);return rootView;}}}

fragment_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.xwy.a.MainActivity$PlaceholderFragment"    android:orientation="vertical" >    <TextView         android:id="@+id/textView1"        android:text="请选择证件类型"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/>    <Spinner         android:entries="@array/ctype"        android:layout_height="wrap_content"        android:layout_width="wrap_content"        android:id="@+id/spinner1"/>    <Button         android:text="提交"        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/></LinearLayout>

arrays.xml

<?xml version="1.0" encoding="utf-8"?><resources>    <string-array name="ctype">        <item>身份证</item>        <item>学生证</item>        <item>军人证</item>        <item>工作证</item>        <item>其他</item>    </string-array></resources>