Android Spinner

Spinner是一個下拉式選單，必須透過橋接的方式將資料橋接近去
我的作法是先將要塞入Spinner的字串輸入在xml檔案

在透過ArrayAdapter將資料橋接近去



Code：

package com.cyfang.myspinner;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.Spinner;

public class SpinnerMain extends Activity {
    private Spinner spinner = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_spinner_main);
        spinner = (Spinner) findViewById(R.id.spinner1);
        ArrayAdapter<CharSequence> arrayAdapter = ArrayAdapter
                .createFromResource(this, R.array.StudentList,
                        android.R.layout.simple_spinner_item);
        arrayAdapter
                .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(arrayAdapter);
    }
}

array.xml：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="StudentList">
        <item >國小</item>
        <item >國中</item>
        <item >高中</item>
        <item >大學</item>
        <item >碩士</item>
        <item >博士</item>
        <item >博士後</item>
    </string-array>
    
</resources>

那如果不透過xml檔案，則可以在程式裡面宣告一個String陣列，建構一個ArrayAdapter並將String陣列塞到ArrayAdapter方法裡頭就可以了

package com.cyfang.myspinner;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.Spinner;

public class SpinnerMain extends Activity {
    private Spinner spinner = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_spinner_main);
        spinner = (Spinner) findViewById(R.id.spinner1);
        String[] str = new String[] { "國小", "國中", "高中", "大學", "碩士", "博士" };
        ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_spinner_item, str);
        arrayAdapter
                .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(arrayAdapter);
    }
}