本文实例讲述了android编程开发之spinner控件用法。分享给大家供大家参考，具体如下：
下拉列表 spinner，spinner是一个每次只能选择所有项的一个项的控件。它的项来自于与之相关联的适配器中。
spinner的使用，可以极大提高用户的体验性。当需要用户选择的时候，可以提供一个下拉列表将所有可选的项列出来。供用户选择。
一、使用数组作为数据源
布局文件：
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<relativelayout 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:paddingbottom="@dimen/activity_vertical_margin"
android:paddingleft="@dimen/activity_horizontal_margin"
android:paddingright="@dimen/activity_horizontal_margin"
android:paddingtop="@dimen/activity_vertical_margin"
tools:context=".mainactivity" >
<spinner
android:id="@+id/spinner1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignparentleft="true"
android:layout_alignparenttop="true" />
</relativelayout>
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mainactivity.java
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package com.example.lesson16_spinner;
import java.util.arraylist;
import java.util.hashmap;
import java.util.list;
import java.util.map;
import android.app.activity;
import android.os.bundle;
import android.view.menu;
import android.view.view;
import android.widget.adapterview;
import android.widget.arrayadapter;
import android.widget.simpleadapter;
import android.widget.spinner;
import android.widget.toast;
public class mainactivity extends activity {
// 声明spinner对象
private spinner spinner;
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.activity_main);
spinner = (spinner) findviewbyid(r.id.spinner1);
//使用数组作为数据源
final string arr[] = new string[] { "周一", "周二", "周三", "周四", "周五", "周六", "周七" };
// adpater对象
arrayadapter<string> arrayadapter = new arrayadapter<string>(this, android.r.layout.simple_spinner_item, arr);
list<map<string, object>> data = new arraylist<map<string, object>>();
map<string, object> map = new hashmap<string, object>();
map.put("logo", r.drawable.ic_launcher);
map.put("text", "xxxx说明操作");
map<string, object> map2 = new hashmap<string, object>();
map2.put("logo", r.drawable.ic_launcher);
map2.put("text", "xxx说明xxx");
data.add(map);
data.add(map2);
simpleadapter simpleadapter = new simpleadapter(this, data, r.layout.activity_item, new string[] { "logo", "text" }, new int[] { r.id.imageview1, r.id.textview1 });
// 设置显示的数据
spinner.setadapter(arrayadapter);
//spinner.setadapter(simpleadapter);
toast.maketext(getapplicationcontext(),"main thread"+ spinner.getitematposition(spinner.getselecteditemposition()), toast.length_long).show();
// 注册事件
spinner.setonitemselectedlistener(new adapterview.onitemselectedlistener() {
@override
public void onitemselected(adapterview<?> parent, view view, int position, long id) {
// string content = arr[position];
spinner spinner = (spinner) parent;
toast.maketext(getapplicationcontext(), "xxxx" + spinner.getitematposition(position), toast.length_long).show();
}
@override
public void onnothingselected(adapterview<?> parent) {
toast.maketext(getapplicationcontext(), "没有改变的处理", toast.length_long).show();
}
});
}
@override
public boolean oncreateoptionsmenu(menu menu) {
// inflate the menu; this adds items to the action bar if it is present.
getmenuinflater().inflate(r.menu.main, menu);
return true;
}
}
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效果如下：
二、使用xml作为数据源（非本人代码）
布局文件：
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<?xml version="1.0" encoding="utf-8"?>
<resources>
<string-array name="plantes">
<item>nokia</item>
<item>moto</item>
<item>htc</item>
<item>lg</item>
<item>其他</item>
</string-array>
</resources>
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java代码：
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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.textview;
public class spinneractivity extends activity {
private textview view2;
private spinner spinner2;
private arrayadapter adapter2;
@override
protected void oncreate(bundle savedinstancestate) {
// todo auto-generated method stub
super.oncreate(savedinstancestate);
setcontentview(r.layout.spinner);
spinner2 = (spinner) findviewbyid(r.id.spinner02);
view2 = (textview) findviewbyid(r.id.spinnertext02);
//将可选内容与arrayadapter连接起来
adapter2 = arrayadapter.createfromresource(this, r.array.plantes, android.r.layout.simple_spinner_item);
//设置下拉列表的风格
adapter2.setdropdownviewresource(android.r.layout.simple_spinner_dropdown_item);
//将adapter2 添加到spinner中
spinner2.setadapter(adapter2);
//添加事件spinner事件监听
spinner2.setonitemselectedlistener(new spinnerxmlselectedlistener());
//设置默认值
spinner2.setvisibility(view.visible);
}
//使用xml形式操作
class spinnerxmlselectedlistener implements onitemselectedlistener{
public void onitemselected(adapterview<?> arg0, view arg1, int arg2, long arg3) {
view2.settext("你使用什么样的手机："+adapter2.getitem(arg2));
}
public void onnothingselected(adapterview<?> arg0) {
}
}
}
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希望本文所述对大家android程序设计有所帮助。