如何獲取每個OnClickListener的json數據？

Question

我正在開發一個Android應用程序，它從網站提取數據爲Json，它有100 ListView數據。我想要獲取每個OnClickListener的每個股票價值。我下面的代碼給出：

public class MainActivity extends AppCompatActivity { 

private String TAG = MainActivity.class.getSimpleName(); 

private ProgressDialog pDialog; 
private ListView lv; 

// URL to get contacts JSON 
private static String url = "https://api.coinmarketcap.com/v1/ticker/?convert=INR&limit=100"; 

ArrayList<HashMap<String, String>> contactList; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    contactList = new ArrayList<>(); 

    lv = (ListView) findViewById(R.id.list); 

    new GetContacts().execute(); 

    lv.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
     @Override 
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
      String id1 = ((TextView)view.findViewById(R.id.name)).getText().toString(); 
      Intent intent = new Intent(MainActivity.this,ViewCoinActivity.class); 
      intent.putExtra("id",id1); 
      startActivity(intent); 

     } 
    }); 
} 



/** 
* Async task class to get json by making HTTP call 
*/ 
private class GetContacts extends AsyncTask<Void, Void, Void> { 

    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     // Showing progress dialog 
     pDialog = new ProgressDialog(MainActivity.this); 
     pDialog.setMessage("Loading...."); 
     pDialog.setCancelable(false); 
     pDialog.show(); 

    } 


    @Override 
    protected Void doInBackground(Void... arg0) { 
     HttpHandler sh = new HttpHandler(); 

     // Making a request to url and getting response 
     String jsonStr = sh.makeServiceCall(url); 

     Log.e(TAG, "Response from url: " + jsonStr); 

     if (jsonStr != null) { 
      try { 
       JSONArray json = new JSONArray(jsonStr); 

       // Getting JSON Array node 


       // looping through All Contacts 
       for (int i = 0; i < json.length(); i++) { 
        JSONObject c = json.getJSONObject(i); 

        String id = c.getString("id"); 
        String name = c.getString("name"); 
        String symbol = c.getString("symbol"); 
        String price_inr = c.getString("price_inr"); 
        String percent_change_24h = c.getString("percent_change_24h"); 
        String market_cap_inr = c.getString("market_cap_inr"); 
        String rank = c.getString("rank"); 
        // Phone node is JSON Object 
        /* JSONObject phone = c.getJSONObject("phone"); 
        String mobile = phone.getString("mobile"); 
        String home = phone.getString("home"); 
        String office = phone.getString("office"); */ 

        // tmp hash map for single contact 
        HashMap<String, String> contact = new HashMap<>(); 

        // adding each child node to HashMap key => value 
        contact.put("id", id); 
        contact.put("name", name); 
        contact.put("symbol", symbol); 
        contact.put("price_inr", price_inr); 
        contact.put("percent_change_24h", percent_change_24h); 
        contact.put("market_cap_inr", market_cap_inr); 
        contact.put("rank", rank); 
        // adding contact to contact list 
        contactList.add(contact); 
       } 
      } catch (final JSONException e) { 
       Log.e(TAG, "Json parsing error: " + e.getMessage()); 
       runOnUiThread(new Runnable() { 
        @Override 
        public void run() { 
         Toast.makeText(getApplicationContext(), 
           "Json parsing error: " + e.getMessage(), 
           Toast.LENGTH_LONG) 
           .show(); 
        } 
       }); 

      } 
     } else { 
      Log.e(TAG, "Couldn't get json from server."); 
      runOnUiThread(new Runnable() { 
       @Override 
       public void run() { 
        Toast.makeText(getApplicationContext(), 
          "Couldn't get Data from Server", 
          Toast.LENGTH_LONG) 
          .show(); 
       } 
      }); 

     } 

     return null; 
    } 

    @Override 
    protected void onPostExecute(Void result) { 
     super.onPostExecute(result); 
     // Dismiss the progress dialog 
     if (pDialog.isShowing()) 
      pDialog.dismiss(); 
     /** 
     * Updating parsed JSON data into ListView 
     * */ 
     ListAdapter adapter = new SimpleAdapter(
       MainActivity.this, contactList, 
       R.layout.list_item, new String[]{"name","symbol", 
       "price_inr","percent_change_24h","market_cap_inr","rank"}, new int[]{R.id.name, 
       R.id.symbol,R.id.price_inr,R.id.percent_change_24h,R.id.market_cap_inr,R.id.rank}); 

     lv.setAdapter(adapter); 
    } 

} 

}

每個的onclick我想從以下基於股票 https://api.coinmarketcap.com/v1/ticker/bitcoin/

https://api.coinmarketcap.com/v1/ticker/ethereum/

Answer 1

對不起獲取數據，但也許我沒有了解你的問題。 但是爲了讓您獲得onItemClickListener的價值，您只需在您的物品位置上使用您的聯繫人列表。您的Adapter的列表相同。像這樣

lv.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
    @Override 
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
     String id1 = contactList.get(position).getIdMethod(); 
     Intent intent = new Intent(MainActivity.this,ViewCoinActivity.class); 
     intent.putExtra("id",id1); 
     startActivity(intent); 

    } 
});