Android中Spanner获取选中内容和选中位置，根据位置选择对象

作为一名菜鸟，关于spanner获取选中的内容文字代码，网上后很多

但是根据给出的位置来自动选择对象，这个代码一直没找到

后来找人问了问，才知道就一句话的事，特意在这里记录下

array.xml

 XML Code 

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<?xml version="1.0" encoding="utf-8"?> <resources>     <string-array name="elementsArray">         <item>金</item>         <item>木</item>         <item>水</item>         <item>火</item>         <item>土</item>     </string-array> </resources>

activity_main.xml

 XML Code 

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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="com.example.spannerposition.MainActivity" >          <LinearLayout          android:layout_width="match_parent"         android:layout_height="match_parent"         android:orientation="vertical">                  <TextView              android:id="@+id/tv_elements"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:text="请选择你喜欢的五行："             android:textSize="17sp"/>     <Spinner         android:id="@+id/s_elements"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_gravity="center"         android:entries="@array/elementsArray"         android:textColor="#000000"         android:textCursorDrawable="@null"         android:textSize="17sp" />          <Button          android:id="@+id/bn_s_select3"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_gravity="center"         android:text="选中第三个"         android:textSize="17sp"/>     </LinearLayout> </RelativeLayout>

MainActivity.java

 Java Code 

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package com.example.spannerposition; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.Button; import android.widget.Spinner; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.Toast; public class MainActivity extends Activity {     private Spinner s_elements;     private int s_position;//记录选择的位置     private String element;     private Button bn_select3;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         this.s_elements = (Spinner) super.findViewById(R.id.s_elements);         this.s_elements.setOnItemSelectedListener(new OnItemSelectedListenerImpl());         this.bn_select3 = (Button) super.findViewById(R.id.bn_s_select3);                //button监听         bn_select3.setOnClickListener(new OnClickListener() {             @Override             public void onClick(View v) {                 s_position = 2;                 s_elements.setSelection(s_position, true);//设置为选中s_posiiton位置的元素             }                      });     }  // 下拉框选择事件     private class OnItemSelectedListenerImpl implements OnItemSelectedListener {         @Override         public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {             element = parent.getItemAtPosition(position).toString();// 得到spanner的值             s_position = position;             Toast.makeText(MainActivity.this, "选择的元素是：" +             element,Toast.LENGTH_SHORT).show();         }         @Override         public void onNothingSelected(AdapterView<?> parent) {             // TODO Auto-generated method stub         }     } }