Android實(shí)現(xiàn)聯(lián)動(dòng)下拉框下拉列表spinner的實(shí)例代碼

更新時(shí)間：2013年10月03日 15:25:42 投稿：shangke

這篇文章介紹了Android實(shí)現(xiàn)聯(lián)動(dòng)下拉框下拉列表spinner的實(shí)例代碼,有需要的朋友可以參考一下

主要實(shí)現(xiàn)辦法：動(dòng)態(tài)加載各級(jí)下拉值的適配器

在本級(jí)下拉框，當(dāng)本級(jí)下拉框的選中值改變時(shí)，隨之修改下級(jí)的適配器的綁定值

XML布局：

復(fù)制代碼代碼如下:

實(shí)現(xiàn)代碼：

復(fù)制代碼代碼如下:

package com.example.android.demo.spinner;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;

/*
     * 設(shè)置下拉框
     */
    private void setSpinner()
    {
        provinceSpinner = (Spinner)findViewById(R.id.spin_province);
        citySpinner = (Spinner)findViewById(R.id.spin_city);
        countySpinner = (Spinner)findViewById(R.id.spin_county);

        //綁定適配器和值
        provinceAdapter = new ArrayAdapter<String>(MainActivity.this,
                android.R.layout.simple_spinner_item, province);
        provinceSpinner.setAdapter(provinceAdapter);
        provinceSpinner.setSelection(3,true); //設(shè)置默認(rèn)選中項(xiàng)，此處為默認(rèn)選中第4個(gè)值

        cityAdapter = new ArrayAdapter<String>(MainActivity.this,
                android.R.layout.simple_spinner_item, city[3]);
        citySpinner.setAdapter(cityAdapter);
        citySpinner.setSelection(0,true); //默認(rèn)選中第0個(gè)

        countyAdapter = new ArrayAdapter<String>(MainActivity.this,
                android.R.layout.simple_spinner_item, county[3][0]);
        countySpinner.setAdapter(countyAdapter);
        countySpinner.setSelection(0, true);


        //省級(jí)下拉框
        provinceSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()
        {

            // 表示選項(xiàng)被改變的時(shí)候觸發(fā)此方法，主要實(shí)現(xiàn)辦法：動(dòng)態(tài)改變地級(jí)適配器的綁定值
            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1, int position, long arg3)
            {
                //position為當(dāng)前省級(jí)選中的值的序號(hào)

                //將地級(jí)適配器的值改變?yōu)閏ity[position]中的值
                cityAdapter = new ArrayAdapter<String>(
                        MainActivity.this, android.R.layout.simple_spinner_item, city[position]);
                // 設(shè)置二級(jí)下拉列表的選項(xiàng)內(nèi)容適配器
                citySpinner.setAdapter(cityAdapter);
                provincePosition = position;    //記錄當(dāng)前省級(jí)序號(hào)，留給下面修改縣級(jí)適配器時(shí)用
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0)
            {

            }

        });


        citySpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()
        {

            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,
                    int position, long arg3)
            {
                countyAdapter = new ArrayAdapter<String>(MainActivity.this,
                        android.R.layout.simple_spinner_item, county[provincePosition][position]);
                countySpinner.setAdapter(countyAdapter);
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0)
            {

            }
        });
    }
}

要獲取下拉框spinner中選中的值，用下面這方法就OK了

provinceSpinner.getSelectedItem().toString();

citySpinner.getSelectedItem().toString();

countySpinner.getSelectedItem().toString();

THE END