主要介绍了使用javascript中读取Xml文件做成的一个二级联动菜单,需要的朋友可以参考下
2022-05-16 22:40:39
37KB
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商品类别二级联动下拉列表，简单易懂，代码基本上都注释了，懂javascript就能看懂并修改为己所用。必选+非必选
2022-05-14 10:34:21
4KB
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我是一个android新手，所以一切以简单起步。android的控件spinner,类似于一个下拉列表.如果您正在学习这个控件，需要实现基于这个控件的二级联动效果,不妨使用这个看看.
使用方法：用eclipse导入，假若报错，把平台改为android2.2,jdk1.6就可以了。
2022-05-05 12:15:51
44KB
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spProvince = (Spinner)findViewById(R.id.spAddMettingAddressProvince);
spCity = (Spinner)findViewById(R.id.spAddMettingAddressCity);
ArrayAdapter aAdapter = ArrayAdapter.createFromResource(this, R.array.province, android.R.layout.simple_spinner_item);
aAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spProvince.setAdapter(aAdapter);
spProvince.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView parent, View view,
int position, long id) {
Spinner spinner = (Spinner)parent;
String pro = (String)spinner.getItemAtPosition(position);
ArrayAdapter cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.city_default, android.R.layout.simple_spinner_item);
//new ArrayAdapter
// (MainActivity.this,android.R.layout.simple_spinner_item, cities);
//获取所在省含有哪些市(从资源数组文件中获取数据)
if(pro.equals("河北省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.hebei, android.R.layout.simple_spinner_item);
}else if(pro.equals("北京市")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.bj, android.R.layout.simple_spinner_item);
}else if(pro.equals("山西省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.shan1xi, android.R.layout.simple_spinner_item);
}else if(pro.equals("天津市")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.tianjing, android.R.layout.simple_spinner_item);
}else if(pro.equals("内蒙古")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.neimeng, android.R.layout.simple_spinner_item);
}else if(pro.equals("辽宁省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.liaoning, android.R.layout.simple_spinner_item);
}else if(pro.equals("吉林省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.jilin, android.R.layout.simple_spinner_item);
}else if(pro.equals("黑龙江省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.heilongjjiang, android.R.layout.simple_spinner_item);
}else if(pro.equals("上海市")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.shanghai, android.R.layout.simple_spinner_item);
}else if(pro.equals("江苏省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.jiangsu, android.R.layout.simple_spinner_item);
}else if(pro.equals("浙江省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.zhejiang, android.R.layout.simple_spinner_item);
}else if(pro.equals("安徽省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.anhui, android.R.layout.simple_spinner_item);
}else if(pro.equals("福建省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.fujian, android.R.layout.simple_spinner_item);
}else if(pro.equals("江西省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.jiangxi, android.R.layout.simple_spinner_item);
}else if(pro.equals("山东省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.shandong, android.R.layout.simple_spinner_item);
}else if(pro.equals("河南省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.henan, android.R.layout.simple_spinner_item);
}else if(pro.equals("湖北省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.hubei, android.R.layout.simple_spinner_item);
}else if(pro.equals("湖南省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.hunan, android.R.layout.simple_spinner_item);
}else if(pro.equals("广东省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.guangdong, android.R.layout.simple_spinner_item);
}else if(pro.equals("广西自治区")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.guangxi, android.R.layout.simple_spinner_item);
}else if(pro.equals("海南省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.hainan, android.R.layout.simple_spinner_item);
}else if(pro.equals("重庆市")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.chongqing, android.R.layout.simple_spinner_item);
}else if(pro.equals("四川省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.sichuan, android.R.layout.simple_spinner_item);
}else if(pro.equals("贵州省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.guzhou, android.R.layout.simple_spinner_item);
}else if(pro.equals("云南省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.yunan, android.R.layout.simple_spinner_item);
}else if(pro.equals("西藏自治区")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.xizang, android.R.layout.simple_spinner_item);
}else if(pro.equals("陕西省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.shan3xi, android.R.layout.simple_spinner_item);
}else if(pro.equals("甘肃省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.gansu, android.R.layout.simple_spinner_item);
}else if(pro.equals("青海省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.qinghai, android.R.layout.simple_spinner_item);
}else if(pro.equals("宁夏回族自治区")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.ningxia, android.R.layout.simple_spinner_item);
}else if(pro.equals("新疆维吾尔自治区")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.xinjiang, android.R.layout.simple_spinner_item);
}else if(pro.equals("香港特别行政区")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.xianggang, android.R.layout.simple_spinner_item);
}else if(pro.equals("澳门特别行政区")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.aomen, android.R.layout.simple_spinner_item);
}else if(pro.equals("台湾省")){
cityAdapter = ArrayAdapter.createFromResource
(MettingAddActivity.this, R.array.taiwan, android.R.layout.simple_spinner_item);
}
cityAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
//绑定数据到Spinner(City)上
spCity.setAdapter(cityAdapter);
}
@Override
public void onNothingSelected(AdapterView parent) {
}
});
2022-05-05 11:15:21
14KB
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先看一下简单的效果
直接上代码
html部分 (下拉框中value的数值我是根据数据库中取出来)
<select name=city lay-filter=province>
2022-04-22 15:11:31
117KB
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小程序picker 二级联动。需要的拿走，只为减少弯路。js文件中为了更方便看到效果所以直接把json 贴出来，通过 JSON.parse(json) 转成对象。正常的应该是通过接口返回的，各位做成动态的要把这个代码去掉，拼装成这样就好了。亲测，可用。
wxml中默认的显示的 两个分类名称，第一个给注释掉了，看需求可再修改显示一个分类名称，还是两个分类名称。
20200603修改了个bug。这个方法重写了
bindMultiPickerColumnChange: function (e) {
var that=this;
console.log('修改的列为', e.detail.column, '，值为', e.detail.value);
var data = {
multiArray: this.data.multiArray,
multiIndex: this.data.multiIndex
};
data.multiIndex[e.detail.column] = e.detail.value;
//如果是第0列，那麼第1列则显示
if(e.detail.column == 0)
{
for (let i = 0; i < that.data.allmultiArray[e.detail.value].child.length; i++) {
if (i == 0)
{
that.setData({ 'childcatid': that.data.allmultiArray[e.detail.value].child[i].class_id, "multiArray[1]":[] });
}
that.data.multiArray[1].push(that.data.allmultiArray[e.detail.value].child[i].class_name);
}
}
//如果是第1列
if(e.detail.column == 1)
{
for (let i = 0; i < that.data.allmultiArray[that.data.multiIndex[0]].child.length; i++) {
if (i == e.detail.column)
{
that.setData({ 'childcatid': that.data.allmultiArray[that.data.multiIndex[0]].child[i].class_id });
}
}
}
this.setData(data);
},
2022-01-13 14:53:21
3KB
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