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>