我是HashMaps的完全新手，花了一周的大部分时间试图找到我需要的东西。
我成功解析了来自HTTP请求的JSON响应。我遇到的麻烦是将每个数据变量/值从每个JSON行保存到HashMap中，然后稍后检索这些数据值。
在我解析JSON响应的for循环中，我需要确保我使用了正确的put命令语法。
更重要的是，在getBottles()中，我需要知道如何设置0。setname_abbr为HashMap中的第一个记录。我最终需要将其转换为for循环，并从JSON响应中分配所有名称，然后从getBottles()中的HashMap中获取它们。
非常感谢您的帮助!
这是我的代码…
public class Bottles extends ListActivity {
private int category_id;
private int subcategory_id;
String subcategory_idString = "false";
String postQuery;
private int bottleID;
String name_abbr;
String name_abbrArray[];
String bottlePicture;
private ProgressDialog m_ProgressDialog = null;
private ArrayList<Bottles> m_bottles = null;
private BottleAdapter m_adapter;
private Runnable viewBottles;
ArrayList<HashMap<String, String>> bottleNameArray = new ArrayList<HashMap<String, String>>();
HashMap<String, String> bottleNamesMap = new HashMap<String, String>();
String name[];
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.bottleslist);
String result = "";
Bundle extras = getIntent().getExtras();
if(extras != null){
category_id = getIntent().getExtras().getInt("id");
subcategory_id = getIntent().getExtras().getInt("subid");
if(subcategory_id==0){
subcategory_idString = "";
}
}
InputStream is = null;
//http post
try{
if(subcategory_idString==""){
postQuery = "my api call goes here";
}
if(subcategory_idString=="false"){
postQuery = "different api call goes here";
}
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(postQuery);
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
Log.e("log_tag", "Error in http connection "+e.toString());
}
//convert response to string
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "n");
}
is.close();
result=sb.toString();
}catch(Exception e){
Log.e("log_tag", "Error converting result "+e.toString());
}
try {
JSONObject row = new JSONObject(result);
JSONArray array = row.getJSONArray("response name");
for (int i = 0; i < array.length(); i++) {
row = array.getJSONObject(i);
bottleID = row.getInt("id");
name_abbr = row.getString("name_abbr");
bottleNamesMap = new HashMap<String, String>();
bottleNamesMap.put("name", name_abbr);
bottlePicture = row.getString("bottlePicture");
}
}catch(Exception e){
Log.e("log_tag", "Error parsing JSON "+e.toString());
}
m_bottles = new ArrayList<Bottles>();
this.m_adapter = new BottleAdapter(this, R.layout.bottlelistimagelayout, m_bottles);
setListAdapter(this.m_adapter);
viewBottles = new Runnable(){
public void run() {
getBottles();
}
};
Thread thread = new Thread(null, viewBottles, "MagentoBackground");
thread.start();
m_ProgressDialog = ProgressDialog.show(Bottles.this,
"Please wait...", "Retrieving data ...", true);
}
public class Bottle{
public String name_abbrArray;
//public String lastName;
//public int age;
}
private void getBottles(){
try{
//will put this into a for loop after I figure out how to reference the HashMap values
m_bottles = new ArrayList<Bottles>();
Bottles o1 = new Bottles();
o1.setname_abbr("I want to get the HashMap value of the first name here");
o1.setbottlePicture("Pending");
Bottles o2 = new Bottles();
o2.setname_abbr("I want to get the HashMap value of the second name here");
o2.setbottlePicture("Completed");
m_bottles.add(o1);
m_bottles.add(o2);
Thread.sleep(2000);
Log.i("ARRAY", ""+ m_bottles.size());
} catch (Exception e) {
Log.e("BACKGROUND_PROC", e.getMessage());
}
runOnUiThread(returnRes);
}
private Runnable returnRes = new Runnable() {
public void run() {
if(m_bottles != null && m_bottles.size() > 0){
m_adapter.notifyDataSetChanged();
for(int i=0;i<m_bottles.size();i++)
m_adapter.add(m_bottles.get(i));
}
m_ProgressDialog.dismiss();
m_adapter.notifyDataSetChanged();
}
};
private class BottleAdapter extends ArrayAdapter<Bottles> {
private ArrayList<Bottles> items;
public BottleAdapter(Context context, int textViewResourceId, ArrayList<Bottles> items) {
super(context, textViewResourceId, items);
this.items = items;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.bottlelistimagelayout, null);
}
Bottles o = items.get(position);
if (o != null) {
TextView tt = (TextView) v.findViewById(R.id.toptext);
TextView bt = (TextView) v.findViewById(R.id.bottomtext);
if (tt != null) {
tt.setText("Name: "+o.getname_abbr()); }
if(bt != null){
bt.setText("Picture: "+ o.getbottlePicture());
}
}
return v;
}
}
}
我想我不完全理解你的问题，但是如果你把每个瓶子hashmap添加到数组列表(顺便说一下，我看到你有一个arraylist
你可以，然后，循环你的数组列表包含你的hashmap: arrayListOfBottles.get(position)