列表选择Spinner

1.只用XML配置来显示列表

在res\values中添加一个arrays.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string-array name="books">
        <item>口里奇才</item>
        <item>凸显</item>
        <item>下雨目前</item>
        <item>越来越一直在于</item>
    </string-array>

</resources>

在主页面的xml中添加Spinner

    <Spinner
        android:id="@+id/spi3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:entries="@array/books" >
    </Spinner>

效果

2.用后台动态添加

布局：

    <Spinner
        android:id="@+id/spi"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </Spinner>

添加数据类

package com.example.myadapter;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.example.androidspinner.R;

public class Myadapter {

    public Myadapter() {
        // TODO Auto-generated constructor stub
    }
    
    public static List<String> getData(){
        List<String> list=new ArrayList<String>();
        list.add("北京");
        list.add("武汉");
        list.add("广州");
        return list;
    }
    
}

主程序中添加数据绑定

package com.example.androidspinner;

import java.util.List;
import java.util.Map;

import com.example.myadapter.Myadapter;

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

public class AndroidSpinnerActivity extends Activity {
    private Spinner spi;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_android_spinner);
        spi = (Spinner) this.findViewById(R.id.spi);
        List<String> list = Myadapter.getData();
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(
                AndroidSpinnerActivity.this,
                android.R.layout.simple_spinner_item, list);
        spi.setAdapter(adapter);

                }

          
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_android_spinner, menu);
        return true;
    }

}

3.选项加图标

布局：

    <Spinner
        android:id="@+id/spi2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </Spinner>

添加数据类

package com.example.myadapter;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.example.androidspinner.R;

public class Myadapter {

    public Myadapter() {
        // TODO Auto-generated constructor stub
    }
    
        
    public static List<Map<String, Object>> getMapData(){
        List<Map<String, Object>> list=new ArrayList<Map<String,Object>>();
        Map<String, Object> map1=new HashMap<String, Object>();
        map1.put("logo", R.drawable.add);
        map1.put("appname", "北京");
        list.add(map1);
        
        Map<String, Object> map2=new HashMap<String, Object>();
        map2.put("logo", R.drawable.application);
        map2.put("appname", "武汉");
        list.add(map2);
        return list;
        
    }

}

主程序中添加数据绑定

package com.example.androidspinner;

import java.util.List;
import java.util.Map;

import com.example.myadapter.Myadapter;

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

public class AndroidSpinnerActivity extends Activity {
        private Spinner spi2;

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

        spi2 = (Spinner) this.findViewById(R.id.spi2);

        List<Map<String, Object>> listMap = Myadapter.getMapData();

        SimpleAdapter simpleAdapter = new SimpleAdapter(
                AndroidSpinnerActivity.this, listMap, R.layout.items,
                new String[] { "logo", "appname" }, new int[] { R.id.imgview,
                        R.id.labview });
        spi2.setAdapter(simpleAdapter);
        
        spi2.setOnItemSelectedListener(new OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> parent, View arg1,
                    int position, long id) {
                String appname=((Map<String,Object>)spi2.getItemAtPosition(position)).get("appname").toString();
                setTitle(appname);
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
                // TODO Auto-generated method stub
                
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_android_spinner, menu);
        return true;
    }

}