Spinner 下拉列表控件

创建一个activity_main.xml文件：

 

创建一个数组字符串：string.xml

 

 

            
     
      hello world
             
     
      yes i do!
             
     
      it\'s easy!
             
     
      I am javaer!
             
     
      Only a littly
         
    

MainActivity.java：

 

 

package com.example.test.com;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.Window;import android.widget.AdapterView;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.ArrayAdapter;import android.widget.Spinner;import android.widget.Toast;public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_main);        //获取下拉列表对象        Spinner spinner = (Spinner) findViewById(R.id.spinner1);        //获取字符串数组        final String[] stringArray = getResources().getStringArray(R.array.stringArray);        //通过适配器 填充数据        ArrayAdapter
    
      adapter = new ArrayAdapter
     
      (this, android.R.layout.simple_spinner_item, stringArray);        spinner.setAdapter(adapter);        //设置一个选中的监听事件        spinner.setOnItemSelectedListener(new OnItemSelectedListener() {            @Override            public void onItemSelected(AdapterView
       arg0, View arg1, int arg2, long arg3) {                int index = arg0.getSelectedItemPosition(); //选中的pos                Toast.makeText(getBaseContext(), "SELECT: "  + stringArray[index], Toast.LENGTH_SHORT).show();            }            @Override            public void onNothingSelected(AdapterView
       arg0) {            }        });    }}
     
    

效果图：