用ArrayAdapter来创建Spinner（自定义布局、默认布局、动态内容、静态内容）

package com.kale.spinner;

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.Toast;

public class MainActivity extends Activity {

    Spinner spinner01,spinner02,spinner03;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        viewInit();
        String []arr = {"JAVA","Android","xml","ios"};
        
        //采用android提供的布局来创建
        ArrayAdapter<String> adapter01 = new ArrayAdapter<>(this, 
                android.R.layout.simple_list_item_multiple_choice,arr);
        spinner01.setAdapter(adapter01);
        //监听器
        spinner01.setOnItemSelectedListener(new OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> adapterView, View arg1,
                    int position, long id) {
                // TODO 自动生成的方法存根
                String selected = adapterView.getItemAtPosition(position).toString();
                Toast.makeText(getApplicationContext(), selected, 0).show();
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
            }
        });
        
//------------------------------------------------------------------------------
        
        //默认的布局文件设置spinner的样式，用写死的数据来创建的。不是很推荐
        ArrayAdapter<CharSequence> adapter02 = ArrayAdapter.createFromResource(this, 
                R.array.item, android.R.layout.simple_spinner_item);
        //设置spinner点开后下拉菜单的样式
        adapter02.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner02.setAdapter(adapter02);
        //spinner02.setPrompt("test");//设置提示文字,现在的界面中已经不显示了。所以可以说是没用了
        
//------------------------------------------------------------------------------
        //采用动态的数据，布局文件是自己定义的item
        ArrayAdapter<String> adapter03 = new ArrayAdapter<>(this, R.layout.item,
                R.id.textView_id, arr);
        spinner03.setAdapter(adapter03);
    }
    private void viewInit() {
        spinner01 = (Spinner) findViewById(R.id.spinner01_id);
        spinner02 = (Spinner) findViewById(R.id.spinner02_id);
        spinner03 = (Spinner) findViewById(R.id.spinner03_id);
    }
}

<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:orientation="vertical"
    android:padding="16dp">

    <!-- 
    android:dropDownWidth                  下拉列表宽度
    android:dropDownHorizontalOffset    下拉列表距离左边的距离
    android:dropDownVerticalOffset      下拉菜单和文本之间的垂直偏移量
    android:popupBackground              下拉列表中的背景色
    android:prompt                         下拉列表中的提示信息
    
     -->

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="用代码填充数据的spinner(用android自带的布局)"
        android:layout_marginTop="16dp"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <Spinner
        android:id="@+id/spinner01_id"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:popupBackground="#ade9ee"
        android:dropDownVerticalOffset="3dp"
         android:prompt="@string/hello_world"/>
    
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="数据写到array中的spinner（用android提供的布局）"
        android:layout_marginTop="26dp"
        android:textAppearance="?android:attr/textAppearanceMedium" />
    
    <Spinner
        android:id="@+id/spinner02_id"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:dropDownVerticalOffset="3dp"
         android:prompt="@string/hello_world"/>
    
    
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="使用自定义布局并动态填入数据的spinner"
        android:layout_marginTop="26dp"
        android:textAppearance="?android:attr/textAppearanceMedium" />
    
    <Spinner
        android:id="@+id/spinner03_id"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>    

 </LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" 
    android:padding="8dp">

    <TextView
        android:id="@+id/textView_id"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Large Text"
        android:textColor="#0000ff"
        android:gravity="center_horizontal"
        android:textAppearance="?android:attr/textAppearanceLarge" />

</LinearLayout>