android 之 Spinner 下拉菜单的使用

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先来查看效果图：

实现代码：

1.布局文件内容：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <TextView        android:id="@+id/target_number"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_marginLeft="60sp"        android:layout_marginTop="20sp" >    </TextView>    <Spinner        android:id="@+id/target_pinner"        android:layout_width="200sp"        android:layout_height="wrap_content"        android:layout_marginLeft="60sp"        android:layout_marginTop="20sp" >    </Spinner>    <TextView        android:id="@+id/consult_number"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_marginLeft="60sp"        android:layout_marginTop="20sp" >    </TextView>    <Spinner        android:id="@+id/consult_spinner"        android:layout_width="200sp"        android:layout_height="wrap_content"        android:layout_marginLeft="60sp"        android:layout_marginTop="20sp" >    </Spinner>    <Button        android:id="@+id/manage_operation"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="100sp"        android:layout_marginTop="20sp"        android:text="执行调度"        android:textSize="18sp" >    </Button></LinearLayout>

2.JAVA程序代码：

import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.ArrayList;import java.util.List;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.NameValuePair;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpPost;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.message.BasicNameValuePair;import org.apache.http.protocol.HTTP;import org.json.JSONArray;import org.json.JSONObject;import com.sxzichen.common.MD5Util;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.AdapterView;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.Spinner;import android.widget.TextView;public class SameQuen_Activity extends Activity  implements OnClickListener{    private static final String[] queuinfo={"A01","A02","A03","A04","A05","A06","A07","A08","A09","A10","A11"};    private TextView target_view ;    private Spinner target_spinner;    private ArrayAdapter<String> target_adapter;        private TextView consult_view;    private Spinner consult_spinner;    private ArrayAdapter<String> consult_adapter;    private String targetNumber="";    private String consultMunber="";    @Override    protected void onCreate(Bundle savedInstanceState) {            // TODO Auto-generated method stub            super.onCreate(savedInstanceState);            setContentView(R.layout.activity_samequeu);            //定义目标排队编号下拉菜单            target_view = (TextView) findViewById(R.id.target_number);            target_spinner = (Spinner) findViewById(R.id.target_pinner);            //将可选内容与ArrayAdapter连接起来            target_adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,queuinfo);            //设置下拉列表的风格            target_adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);            //将adapter 添加到spinner中            target_spinner.setAdapter(target_adapter);            //添加事件Spinner事件监听              target_spinner.setOnItemSelectedListener(new BooldSpinnerSelectedListener());            //设置默认值            target_spinner.setVisibility(View.VISIBLE);                        //定义参照排队编号下拉菜单            consult_view = (TextView) findViewById(R.id.consult_number);            consult_spinner = (Spinner) findViewById(R.id.consult_spinner);            //将可选内容与ArrayAdapter连接起来            consult_adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,queuinfo);            //设置下拉列表的风格            consult_adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);            //将adapter 添加到spinner中            consult_spinner.setAdapter(consult_adapter);            //添加事件Spinner事件监听              consult_spinner.setOnItemSelectedListener(new MobleSpinnerSelectedListener());            //设置默认值            consult_spinner.setVisibility(View.VISIBLE);                        Button manage_operation=(Button)findViewById(R.id.manage_operation);             manage_operation.setOnClickListener(this);                 }        //选择 目标排队编号 事件 监听器    class BooldSpinnerSelectedListener implements OnItemSelectedListener{            public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,                            long arg3) {                      targetNumber=queuinfo[arg2];                     target_view.setText("要移动的排队编号是："+queuinfo[arg2]);            }            public void onNothingSelected(AdapterView<?> arg0) {            }    }    //    //选择 参照排队编号 事件 监听器    class MobleSpinnerSelectedListener implements OnItemSelectedListener{            public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,                            long arg3) {                     consultMunber=queuinfo[arg2];            consult_view.setText("移动到 "+queuinfo[arg2] +" 后边 ");            }            public void onNothingSelected(AdapterView<?> arg0) {            }    }    @Overridepublic void onClick(View v) { System.out.println(" 进入同一队列调度环节"); System.out.println("执行 把 "+targetNumber+" 移动到 "+consultMunber+"  后边操作  ");//   switch(v.getId()){//根据点击不同的按钮，弹出相应的提示 //   // 插队//        case R.id.breke_queuing: //        System.out.println("进入插队环节");//        startBreakQuening(user_name,estination_code) ;//            break; //            //队列管理//        case R.id.same_queuing: //        System.out.println("进入同一队列管理环节");//        sameMangerQuening(user_name,estination_code) ;//            break;      //            //队列管理//        case R.id.diffrent_queuing: //        System.out.println("进入不同队列管理环节");//         diffrentMangerQuening(user_name,estination_code) ;//            break; //   }        }     @Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.activity_main, menu);return true;}}