把JSON数据转换成一个列表 [英] Putting JSON data into a List
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问题描述
我有我的JSON数据从我的服务器即将正确，我只想把它分为以下几个数组，但我不知道JSON数据被正确地插入到ArrayList中。
下面是数组
私人列表＆LT; ShopInfo＆GT; createList（INT尺寸）{
名单＆LT; ShopInfo＆GT;结果=新的ArrayList＆LT; ShopInfo＆GT;（）;
的for（int i = 1; I＆LT; =大小;我++）{
ShopInfo CI =新ShopInfo（）;
ci.name = TAG_NAME + I;
ci.address = TAG_ADDRESS + I;
result.add（CI）;
}
返回结果;
}
我的JSON
{成功：1，店：[{名：Test_Shop，地址：大1路都柏林}
文件
公共类OrderCoffee延伸活动{
JSONParser jParser =新JSONParser（）;
ArrayList的＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT; shopList;
私有静态字符串url_all_products =XXXXXXXXXX / ordercoffee.php;
//产品JSONArray
JSONArray商店= NULL;
// JSON节点名称
私有静态最后弦乐TAG_SUCCESS =成功;
私有静态最后弦乐TAG_SHOPS =商店;
私有静态最后弦乐TAG_NAME =名;
私有静态最后弦乐TAG_ADDRESS =地址;
//取得的在当地参与咖啡店正在使用的应用程序的列表
保护无效的onCreate（包savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.order_coffee）;
新LoadAllProducts（）执行（）;
RecyclerView recList =（RecyclerView）findViewById（R.id.cardList）;
recList.setHasFixedSize（真正的）;
LinearLayoutManager LLM =新LinearLayoutManager（本）;
llm.setOrientation（LinearLayoutManager.VERTICAL）;
recList.setLayoutManager（LLM）;
shopList =新的ArrayList＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT;（）;
ShopAdapter CA =新ShopAdapter（createList（3））;
recList.setAdapter（CA）;
}
类LoadAllProducts扩展的AsyncTask＆LT;字符串，字符串，字符串＆GT; {
@覆盖
保护字符串doInBackground（字符串参数... args）{
//大厦参数
名单＆LT;的NameValuePair＆GT; PARAMS =新的ArrayList＆LT;的NameValuePair＆GT;（）;
//从URL获取JSON字符串
JSONObject的JSON = jParser.makeHtt prequest（url_all_products，GET，则params）;
//检查你的日志猫JSON效应初探
Log.d（所有产品，json.toString（））;
尝试 {
//检查成功TAG
INT成功= json.getInt（TAG_SUCCESS）;
如果（成功== 1）{
发现//产品
//获取数组
商店= json.getJSONArray（TAG_SHOPS）;
//遍历所有产品
的for（int i = 0; I＆LT; shops.length（）;我++）{
JSONObject的C = shops.getJSONObject（我）;
//保存在变量中的每个JSON项目
字符串ID = c.getString（TAG_ADDRESS）;
字符串名称= c.getString（TAG_NAME）;
//创建新的HashMap
HashMap的＆LT;字符串，字符串＆GT;图=新的HashMap＆LT;字符串，字符串＆GT;（）;
//添加每个子节点HashMap中的key =＆GT;值
map.put（TAG_ADDRESS，ID）;
map.put（TAG_NAME，姓名）;
shopList.add（图）
}
} 其他 {
}
}赶上（JSONException E）{
e.printStackTrace（）;
}
返回null;
}
}
@覆盖
公共布尔onCreateOptionsMenu（功能菜单）{
返回true;
}
@覆盖
公共布尔onOptionsItemSelected（菜单项项）{
//处理动作栏项目点击这里。将操作栏
//自动在主/向上按钮操作的点击，只要
//你在AndroidManifest.xml中指定一个父活动。
INT的id = item.getItemId（）;
如果（ID == R.id.action_settings）{
返回true;
}
返回super.onOptionsItemSelected（项目）;
}
私人列表＆LT; ShopInfo＆GT; createList（INT尺寸）{
名单＆LT; ShopInfo＆GT;结果=新的ArrayList＆LT; ShopInfo＆GT;（）;
的for（int i = 1; I＆LT; =大小;我++）{
ShopInfo CI =新ShopInfo（）;
ci.name = TAG_NAME + I;
ci.address = TAG_ADDRESS + I;
result.add（CI）;
}
返回结果;
}
}
ShopAdapter
包com.example.strobe.coffeetime;
进口android.support.v7.widget.RecyclerView;
进口android.view.LayoutInflater;
进口android.view.View;
进口android.view.ViewGroup;
进口android.widget.TextView;
进口的java.util.List;
/ **
*在15年10月4日创建于根。
* /
公共类ShopAdapter扩展RecyclerView.Adapter＆LT; ShopAdapter.ShopViewHolder＆GT; {
私人列表＆LT; ShopInfo＆GT; shopList;
公共ShopAdapter（名单＆LT; ShopInfo＆GT; shopList）{
this.shopList = shopList;
}
@覆盖
公众诠释getItemCount（）{
返回shopList.size（）;
}
@覆盖
公共无效onBindViewHolder（ShopViewHolder shopViewHolder，int i）以{
ShopInfo CI = shopList.get（我）;
shopViewHolder.vName.setText（ci.name）;
shopViewHolder.vAddress.setText（ci.address）;
}
@覆盖
公共ShopViewHolder onCreateViewHolder（ViewGroup中的ViewGroup，int i）以{
查看ItemView控件= LayoutInflater。
从（viewGroup.getContext（））。
膨胀（R.layout.card_layout，ViewGroup中，假）;
返回新ShopViewHolder（ItemView控件）;
}
公共静态类ShopViewHolder扩展RecyclerView.ViewHolder {
受保护的TextView vName;
受保护的TextView将Vaddress;
公共ShopViewHolder（视图v）{
超级（五）;
vName =（TextView中）v.findViewById（R.id.name）;
将Vaddress =（TextView中）v.findViewById（R.id.address）;
}
}
}
解决方案
您应该改变你的onCreate本
私人RecyclerView recList;
保护无效的onCreate（包savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.order_coffee）;
recList =（RecyclerView）findViewById（R.id.cardList）;
recList.setHasFixedSize（真正的）;
recList.setLayoutManager（新LinearLayoutManager（本））;
shopList =新的ArrayList＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT;（）;
新LoadAllProducts（）执行（）;
}
然后在onPostExecute
保护无效onPostExecute（字符串结果）{
名单＆LT; ShopInfo＆GT;名单=新的ArrayList＆LT; ShopInfo＆GT;（）;
的for（int i = 0; I＆LT; shopList.size（）;我++）{
ShopInfo CI =新ShopInfo（）;
HashMap的＆LT;字符串，字符串＆GT;地图= shopList.get（I）
ci.name = map.get（TAG_NAME）;
ci.address = map.get（TAG_ADDRESS）;
list.add（CI）;
}
ShopAdapter CA =新ShopAdapter（名单）;
recList.setAdapter（CA）;
}
如果您不使用shopList为别的，你可以将其删除，移动code，用于创建传递给适配器doInBackground名单
I have my JSON data coming correctly from my server, I just want to put it into the following array but I'm not sure the JSON data is correctly being inserted into the ArrayList.
Here is the array
private List<ShopInfo> createList(int size) {
List<ShopInfo> result = new ArrayList<ShopInfo>();
for (int i = 1; i <= size; i++) {
ShopInfo ci = new ShopInfo();
ci.name = TAG_NAME+i;
ci.address = TAG_ADDRESS+i;
result.add(ci);
}
return result;
}
My json
{"success":1,"shops":[{"name":"Test_Shop","address":"1 Big Road Dublin"}
The file
public class OrderCoffee extends Activity {
JSONParser jParser = new JSONParser();
ArrayList<HashMap<String, String>> shopList;
private static String url_all_products = "xxxxxxxxxx/ordercoffee.php";
// products JSONArray
JSONArray shops = null;
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_SHOPS = "shops";
private static final String TAG_NAME = "name";
private static final String TAG_ADDRESS = "address";
//get a list of participating coffee shops in the locality that are using the app
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.order_coffee);
new LoadAllProducts().execute();
RecyclerView recList = (RecyclerView) findViewById(R.id.cardList);
recList.setHasFixedSize(true);
LinearLayoutManager llm = new LinearLayoutManager(this);
llm.setOrientation(LinearLayoutManager.VERTICAL);
recList.setLayoutManager(llm);
shopList = new ArrayList<HashMap<String, String>>();
ShopAdapter ca = new ShopAdapter(createList(3));
recList.setAdapter(ca);
}
class LoadAllProducts extends AsyncTask<String, String, String> {
@Override
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
// getting JSON string from URL
JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
// Check your log cat for JSON reponse
Log.d("All Products: ", json.toString());
try {
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// products found
// Getting Array
shops = json.getJSONArray(TAG_SHOPS);
// looping through All Products
for (int i = 0; i < shops.length(); i++) {
JSONObject c = shops.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_ADDRESS);
String name = c.getString(TAG_NAME);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_ADDRESS, id);
map.put(TAG_NAME, name);
shopList.add(map);
}
} else {
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
private List<ShopInfo> createList(int size) {
List<ShopInfo> result = new ArrayList<ShopInfo>();
for (int i = 1; i <= size; i++) {
ShopInfo ci = new ShopInfo();
ci.name = TAG_NAME+i;
ci.address = TAG_ADDRESS+i;
result.add(ci);
}
return result;
}
}
ShopAdapter
package com.example.strobe.coffeetime;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.util.List;
/**
* Created by root on 10/04/15.
*/
public class ShopAdapter extends RecyclerView.Adapter<ShopAdapter.ShopViewHolder> {
private List<ShopInfo> shopList;
public ShopAdapter(List<ShopInfo> shopList) {
this.shopList = shopList;
}
@Override
public int getItemCount() {
return shopList.size();
}
@Override
public void onBindViewHolder(ShopViewHolder shopViewHolder, int i) {
ShopInfo ci = shopList.get(i);
shopViewHolder.vName.setText(ci.name);
shopViewHolder.vAddress.setText(ci.address);
}
@Override
public ShopViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View itemView = LayoutInflater.
from(viewGroup.getContext()).
inflate(R.layout.card_layout, viewGroup, false);
return new ShopViewHolder(itemView);
}
public static class ShopViewHolder extends RecyclerView.ViewHolder {
protected TextView vName;
protected TextView vAddress;
public ShopViewHolder(View v) {
super(v);
vName = (TextView) v.findViewById(R.id.name);
vAddress = (TextView) v.findViewById(R.id.address);
}
}
}
解决方案
You should change your onCreate to this
private RecyclerView recList;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.order_coffee);
recList = (RecyclerView) findViewById(R.id.cardList);
recList.setHasFixedSize(true);
recList.setLayoutManager(new LinearLayoutManager(this));
shopList = new ArrayList<HashMap<String, String>>();
new LoadAllProducts().execute();
}
And then in onPostExecute
protected void onPostExecute(String result) {
List<ShopInfo> list = new ArrayList<ShopInfo>();
for (int i = 0; i < shopList.size(); i++) {
ShopInfo ci = new ShopInfo();
HashMap<String, String> map = shopList.get(i)
ci.name = map.get(TAG_NAME);
ci.address = map.get(TAG_ADDRESS);
list.add(ci);
}
ShopAdapter ca = new ShopAdapter(list);
recList.setAdapter(ca);
}
If you are not using shopList for anything else you can remove it and move the code for creating the list you pass to the adapter to doInBackground
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