Spinner

package com.SpinnerDemo;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.AdapterView.OnItemSelectedListener;

public class MainActivity extends Activity {
        /** Called when the activity is first created. */
  Spinner    spinner ;

  @SuppressWarnings("unchecked")
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    spinner = (Spinner) findViewById(R.id.spinner1);
    //动态创建spinner的数据,需要一个xml布局作为模板
    List<String> list = new ArrayList<String>();
    list.add("test1");
    list.add("test2");
    ArrayAdapter adapter = new ArrayAdapter(this, R.layout.item,
        R.id.textView1, list);

    // 静态添加固定数据，通过createFromResource（）创建一个ArrayAdapter
    // ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
    // this, R.array.spinner, android.R.layout.simple_spinner_item);
    // 设置spinner每个条目的样式，此处引用android系统自带的文件
    // adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    // 将适配器加入spinner
    spinner.setAdapter(adapter);
    // 标题的
    spinner.setPrompt("测试");
    spinner.setOnItemSelectedListener(new spinnerListenner());
  }
  class spinnerListenner implements OnItemSelectedListener{

    public void onItemSelected(AdapterView<?> parent, View view,
        int position, long id) {
      // 的到被选中控件的内容
      String selectString = parent.getItemAtPosition(position).toString();
        
    }

    public void onNothingSelected(AdapterView<?> parent) {
        
        
    }
    
  }
}

value文件中的内容

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <string name="hello">Hello World, MainActivity!</string>
  <string name="app_name">SpinnerDemo</string>
  <string-array name="spinner">
    <item>张三</item>
    <item>李四</item>
    <item>王五</item>
    <item>牧六</item>
  </string-array>

</resources>

xml中的布局信息

<?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"
        >
<TextView    
        android:layout_width="fill_parent"    
        android:layout_height="wrap_content"    
        android:text="@string/hello"
        />
<Spinner android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/spinner1"></Spinner>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
        <TextView android:text="TextView" android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="20dp" android:textColor="#000000"></TextView>
</LinearLayout>