基于Spinner实现的三级联动、多级联动
废话不多说直接上代码：
import android.content.Context;
import android.content.SharedPreferences;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
* Created by chenxiaoli on 2017/3/6 0006.
*基于Spinner实现的多级列表
* 可以开启本地缓存，
* 也可以通过getPosition获取索引自己实现缓存
*/
public class MultistageSpinnerHelper {
private static final String SELETE_POSITION = "selectPosition";
private static final String ID = "id";
private OnAddressChangerListener listener;
private MultistageBean[] multistageBeans;
private ArrayList multistageBeens;
private boolean isSaveCache;//是否使用实时缓存
private SharedPreferences sp;
private String id;
private ArrayList[] arrayLists;//所有列表集合
private int[] positions;//所有索引数组
public interface OnAddressChangerListener {
void onAddressChanger(MultistageBean[] multistageBeans);
}
public MultistageSpinnerHelper(ArrayList multistageBeens) {
this.multistageBeens = multistageBeens;
}
/**
* 选择条目变更的监听
*
* @param listener
*/
public void setOnAddressChangeListener(OnAddressChangerListener listener) {
this.listener = listener;
}
public void setSpinnerData(final Context context, final Spinner... spinners) {
int spinnersLength = spinners.length;
positions = new int[spinnersLength];
initCache(context, spinnersLength);//读取缓存
arrayLists = new ArrayList[spinnersLength];
multistageBeans = new MultistageBean[spinnersLength];
final List spinnerList = Arrays.asList(spinners);
for (int i = 0; i < spinnersLength; i++) {
arrayLists[i] = new ArrayList();
if (i == 0) {//第一个条目是集合
for (MultistageBean bean : multistageBeens) {
arrayLists[0].add(bean.name);
}
ArrayAdapter adapter = new ArrayAdapter(context, android.R.layout.simple_spinner_dropdown_item, arrayLists[i]);
spinners[i].setAdapter(adapter);
spinners[i].setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {//设置首条目监听
@Override
public void onItemSelected(AdapterView parent, View view, final int position, long id) {
int i = spinnerList.indexOf(parent);
multistageBeans[i] = multistageBeens.get(position);
// provincePosition = position;
if (isSaveCache) {//保存本地缓存
if (sp == null) {
sp = context.getSharedPreferences("MultistageSpinnerHelper" + MultistageSpinnerHelper.this.id, Context.MODE_PRIVATE);
}
sp.edit().putInt(SELETE_POSITION + i, position).commit();
}
if (listener != null) {
listener.onAddressChanger(multistageBeans);
}
if (i + 1 < spinners.length && multistageBeans[i].children != null) {
arrayLists[i + 1].clear();
for (MultistageBean bean : multistageBeans[i].children) {
arrayLists[i + 1].add(bean.name);
}
ArrayAdapter adapter22 = new ArrayAdapter<>(context, android.R.layout.simple_spinner_dropdown_item, arrayLists[i + 1]);
spinners[i + 1].setAdapter(adapter22);
spinners[i + 1].setSelection(positions[i + 1]);
}
}
@Override
public void onNothingSelected(AdapterView parent) {
}
});
} else {
ArrayAdapter adapter = new ArrayAdapter(context, android.R.layout.simple_spinner_dropdown_item, arrayLists[i]);
spinners[i].setAdapter(adapter);
spinners[i].setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {//设置其余条目监听
@Override
public void onItemSelected(AdapterView parent, View view, final int position, long id) {
int i = spinnerList.indexOf(parent);
multistageBeans[i] = multistageBeans[i - 1].children.get(position);
// provincePosition = position;
if (isSaveCache) {//保存本地缓存
if (sp == null) {
sp = context.getSharedPreferences("MultistageSpinnerHelper" + MultistageSpinnerHelper.this.id, Context.MODE_PRIVATE);
}
sp.edit().putInt(SELETE_POSITION + i, position).commit();
}
if (listener != null) {
listener.onAddressChanger(multistageBeans);
}
if (i + 1 < spinners.length && multistageBeans[i] != null && multistageBeans[i].children != null) {
arrayLists[i + 1].clear();
for (MultistageBean bean : multistageBeans[i].children) {
arrayLists[i + 1].add(bean.name);
}
ArrayAdapter adapter22 = new ArrayAdapter<>(context, android.R.layout.simple_spinner_dropdown_item, arrayLists[i + 1]);
spinners[i + 1].setAdapter(adapter22);
spinners[i + 1].setSelection(positions[i + 1]);
}
}
@Override
public void onNothingSelected(AdapterView parent) {
}
});
}
}
spinners[0].setSelection(positions[0]);
}
/**
* 读取本地缓存
*/
private void initCache(Context context, int length) {
sp = context.getSharedPreferences("MultistageSpinnerHelper" + id, Context.MODE_PRIVATE);
for (int i = 0; i < length; i++) {
positions[i] = sp.getInt(SELETE_POSITION + i, 0);
}
}
/**
* @return 返回选中的数据
*/
public MultistageBean[] getMultistageBeans() {
return multistageBeans;
}
/**
* @return 返回选中的索引
*/
public int[] getPositions() {
return positions;
}
/**
* @param saveCache
* @param Tag,根据id存取缓存数据 是否开启多用户本地缓存
* 默认不开启
* 需要在setSpinnerAddress方法前调用
*/
public void openCache(boolean saveCache, String Tag) {
this.isSaveCache = saveCache;
this.id = Tag;
}
/**
* @param saveCache 是否开启单用户本地缓存
* 默认不开启
* 需要在setSpinnerAddress方法前调用
*/
public void openCache(boolean saveCache) {
openCache(saveCache, "");
}
import java.util.List;
/**
* Created by lee3219237 on 2017/3/2 0002.
*/
public class MultistageBean {
/**
* children : [{"children":[{"city_id":110100,"entityId":110101,"id":110101,"name":"东城区","persistent":true},{"city_id":110100,"entityId":110102,"id":110102,"name":"西城区","persistent":true},{"city_id":110100,"entityId":110103,"id":110103,"name":"崇文区","persistent":true},{"city_id":110100,"entityId":110104,"id":110104,"name":"宣武区","persistent":true},{"city_id":110100,"entityId":110105,"id":110105,"name":"朝阳区","persistent":true},{"city_id":110100,"entityId":110106,"id":110106,"name":"丰台区","persistent":true},{"city_id":110100,"entityId":110107,"id":110107,"name":"石景山区","persistent":true},{"city_id":110100,"entityId":110108,"id":110108,"name":"海淀区","persistent":true},{"city_id":110100,"entityId":110109,"id":110109,"name":"门头沟区","persistent":true},{"city_id":110100,"entityId":110111,"id":110111,"name":"房山区","persistent":true},{"city_id":110100,"entityId":110112,"id":110112,"name":"通州区","persistent":true},{"city_id":110100,"entityId":110113,"id":110113,"name":"顺义区","persistent":true},{"city_id":110100,"entityId":110114,"id":110114,"name":"昌平区","persistent":true},{"city_id":110100,"entityId":110115,"id":110115,"name":"大兴区","persistent":true},{"city_id":110100,"entityId":110116,"id":110116,"name":"怀柔区","persistent":true},{"city_id":110100,"entityId":110117,"id":110117,"name":"平谷区","persistent":true}],"id":110100,"name":"市辖区","parent_id":110000},{"children":[{"city_id":110200,"entityId":110228,"id":110228,"name":"密云县","persistent":true},{"city_id":110200,"entityId":110229,"id":110229,"name":"延庆县","persistent":true}],"id":110200,"name":"县","parent_id":110000}]
* id : 110000
* name : 北京市
* parent_id : 0
*/
public int id;
public String name;
public int parent_id;
public List children;
}
import com.google.gson.reflect.TypeToken;
import com.google.gson.Gson;
public class MyActivity extends Activity{
private Spinner spinnerProvice1;//省
private Spinner spinnerCity1;//市
private Spinner spinnerCounty1;//县
private Spinner spinnerProvice2;//上班地点省
private Spinner spinnerCity2;//上班地点市
private Spinner spinnerCounty2;//上班地点县
private Button button;//下一步，保存
private MultistageSpinnerHelper multistageSpinnerHelper1;
private MultistageSpinnerHelper multistageSpinnerHelper2;
private ArrayList address;//包含省市县地址的对象
@Override
protected void onCreate(Bundle savedInstanceState) {
setContentView(resource);
spinnerProvice1 = findviewbyid(...);
spinnerCity1 = findviewbyid(...);
spinnerCounty1 = findviewbyid(...);
spinnerProvice2 = findviewbyid(...);
spinnerCity2 = findviewbyid(...);
spinnerCounty2 = findviewbyid(...);
button = findviewbyid(...);
new Thread(){
public void run(){
AssetManager manager = getAssets();
try {
InputStreamReader inputReader = new InputStreamReader(manager.open("city.json") );//读取asset文件夹中的地址json文件
BufferedReader bufReader = new BufferedReader(inputReader);
String line="";
String Result="";
while((line = bufReader.readLine()) != null)
Result += line;
Type type = new TypeToken>()
{}.getType();
Gson gson = new Gson();
address = gson.fromJson(Result, type);//将json转化为对象
} catch (IOException e) {
e.printStackTrace();
}
runOnUiThread(new Runnable() {
@Override
public void run() {
multistageSpinnerHelper1 = new MultistageSpinnerHelper(address);
multistageSpinnerHelper1.openCache(true,"tag1"+"用户uid");//开启本地缓存，这里可以设置缓存标识，用于区别不同页面或不同用户
multistageSpinnerHelper1.setSpinnerData(MyActivity.this, spinnerProvice1, spinnerCity1, spinnerCounty1);
multistageSpinnerHelper2 = new MultistageSpinnerHelper(address);
multistageSpinnerHelper2.openCache(true,"tag2"+"用户uid");//开启本地缓存，这里可以设置缓存标识，用于区别不同页面或不同用户
multistageSpinnerHelper2.setSpinnerData(MyActivity.this, spinnerProvice2, spinnerCity2, spinnerCounty2);
}
});
}
}.start();
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
MultistageBean[] multistageBeen1 = multistageSpinnerHelper1.getMultistageBeans();//通过get方法
Toast.makeText(this,multistageBeen1[0].name+":"+ multistageBeen1[1].name+":"+ multistageBeen1[2].name,Toast.LENGTH_SHORT).show();
MultistageBean[] multistageBeen2 = multistageSpinnerHelper2.getMultistageBeans();//通过get方法
Toast.makeText(this,multistageBeen2[0].name+":"+ multistageBeen2[1].name+":"+ multistageBeen2[2].name,Toast.LENGTH_SHORT).show();
}
});
}
}