Android Spinner控件使用方法

Spinner是适配器控件的一种，提供一种下拉列表形式的控件，运行后效果如下：

使用方法比较简单，直接上代码

activity_main.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="vertical"   >        <TextView         android:text="@string/ys"        android:id="@+id/TextView01"        android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:textSize="28sp"/>    <Spinner        android:id="@+id/Spinner01"        android:layout_width="fill_parent"        android:layout_height="wrap_content"/></LinearLayout>

string.xml

<?xml version="1.0" encoding="utf-8"?><resources>    <string name="app_name">Spinner</string>    <string name="action_settings">Settings</string>    <string name="hello_world">Hello world!</string>    <string name="ys">您的爱好</string>    <string name="lq">篮球</string>    <string name="zq">足球</string>    <string name="pq">排球</string></resources>

color.xml

<?xml version="1.0" encoding="utf-8"?><resources><color name="red">#fd8d8d</color><color name="green">#9cfda3</color><color name="blue">#8d9dfd</color><color name="white">#FFFFFF</color><color name="black">#000000</color></resources>

MainActivity.java

package com.mzhq.spinner;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.View;import android.widget.AdapterView;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.Spinner;import android.widget.TextView;import android.view.ViewGroup;import android.widget.AdapterView.OnItemSelectedListener;public class MainActivity extends Activity {  final static int WRAP_CONETNT = -2;// 表示WRAP_CONTENT的常量  // 所有资源的图片(足球、篮球、排球) id的数组  int[] drawableIds = { R.drawable.football, R.drawable.basketball,  R.drawable.volleyball };  // 所有资源字符串 (足球、篮球、排球) id的数组  int[] msgIds = { R.string.zq, R.string.lq, R.string.pq };  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    Spinner sp = (Spinner) findViewById(R.id.Spinner01);    BaseAdapter ba = new BaseAdapter() {    public int getCount() {      // 一共三个选项      return 3;    }    public Object getItem(int position) {      return null;    }    public long getItemId(int position) {      return 0;    }    public View getView(int position, View convertView, ViewGroup parent) {      // 动态生成每个下拉项对应的View，每个下拉项View由LinearLayout      // 中包含一个ImageView及一个TextView构成      // 初始化LinearLayout      LinearLayout ll = new LinearLayout(MainActivity.this);      ll.setOrientation(LinearLayout.HORIZONTAL);      // 初始化ImageView      ImageView ii = new ImageView(MainActivity.this);      ii.setImageDrawable((getResources().getDrawable(drawableIds[position])));      ll.addView(ii);      // 初始化TextView      TextView tv = new TextView(MainActivity.this);      tv.setText(" " + getResources().getText(msgIds[position]));      tv.setTextColor(getResources().getColor(R.color.red));      tv.setTextSize(24);      ll.addView(tv);      return ll;      }    };    // 为Spinner设置内容适配器    sp.setAdapter(ba);    sp.setOnItemSelectedListener(new OnItemSelectedListener() {      public void onItemSelected(AdapterView<?> parent, View view,      int position, long id) {        // 获取主界面TextView       TextView tv = (TextView) findViewById(R.id.TextView01);       // 获取当前选中选项对应的LinearLayout      LinearLayout ll = (LinearLayout) view;      // 获取其中的TextView      TextView tvn = (TextView) ll.getChildAt(1);      // 用StringBuilder动态生成信息      StringBuilder sb = new StringBuilder();      sb.append(getResources().getText(R.string.ys));      sb.append(":");      sb.append(tvn.getText());      // 信息设置进住界面      tv.setText(sb.toString());      }      public void onNothingSelected(AdapterView<?> parent) {      }     });    }    @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;    }}

源码下载地址：http://download.csdn.net/detail/m370809968/6367685