简单Spinner

mainActivity

 package com.zzw.spinner;

 import android.app.Activity;
 import android.content.Context;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 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 MainActivity extends Activity {

     private String[] start_citys, end_citys;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         start_citys = getResources().getStringArray(R.array.start_city);
         end_citys = getResources().getStringArray(R.array.end_city);

         Spinner spinner1 = (Spinner) findViewById(R.id.spinner1);
         spinner1.setAdapter(new MySpinnerAdapter(this, R.layout.item_start, R.id.TextView_start, start_citys));
         Spinner spinner2 = (Spinner) findViewById(R.id.spinner2);
         spinner2.setAdapter(new MySpinnerAdapter(this, R.layout.item_end, R.id.TextView_end, end_citys));

         spinner1.setOnItemSelectedListener(new OnItemSelectedListener() {
             @Override
             public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                 Toast.makeText(getApplicationContext(), start_citys[position], 0).show();
             }

             @Override
             public void onNothingSelected(AdapterView<?> parent) {

             }
         });

         spinner2.setOnItemSelectedListener(new OnItemSelectedListener() {

             @Override
             public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                 Toast.makeText(getApplicationContext(), end_citys[position], 0).show();
             }

             @Override
             public void onNothingSelected(AdapterView<?> parent) {

             }
         });

     }

     private class MySpinnerAdapter extends ArrayAdapter {
         private Context context;
         private int item;
         private int R_textView;
         private String[] citys;
         LayoutInflater inflater;

         public MySpinnerAdapter(Context context, int resource, int textViewResourceId, String[] citys) {
             super(context, resource, textViewResourceId, citys);
             this.context = context;
             this.item = resource;
             this.R_textView = textViewResourceId;
             this.citys = citys;
             inflater = LayoutInflater.from(context);
         }

         @Override
         public int getCount() {
             return citys.length;
         }

         // 下拉框中显示的view
         @Override
         public View getView(int position, View convertView, ViewGroup parent) {
             if (convertView == null) {
                 convertView = inflater.inflate(item, null);
             }
             TextView textView = (TextView) convertView.findViewById(R_textView);
             textView.setText(citys[position]);
             return convertView;
         }

         // 显示的是下拉的列表view
         // 如果数据没有从new的时候传递下来，那么不写这个方法有Resources$NotFoundException异常
         @Override
         public View getDropDownView(int position, View convertView, ViewGroup parent) {
             if (convertView == null) {
                 convertView = inflater.inflate(item, null);
             }
             TextView textView = (TextView) convertView.findViewById(R_textView);
             textView.setText(citys[position]);
             return convertView;
         }

     }
 }

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:orientation="horizontal"
     tools:context="com.zzw.spinner.MainActivity" >

        <Spinner
            android:id="@+id/spinner1"
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            />
     <Spinner
            android:id="@+id/spinner2"
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            />
 </LinearLayout>