Android的微調小問題

微調飼料類Android的微調小問題

public class SpinnerFeed { 
    private String name; 
    private String id; 

    public String getName() { 
     return name; 
    } 
    public void setName(String name) { 
     this.name = name; 
    } 
    public String getId() { 
     return id; 
    } 
    public void setId(String id) { 
     this.id = id; 
    }

} 功能從URL

public String readFeed() { 
    StringBuilder builder = new StringBuilder(); 
    HttpClient client = new DefaultHttpClient(); 

    // domain intentionally obfuscated for security reasons 
    HttpGet httpGet = new HttpGet("statesURL"); 
    try 
    { 
     HttpResponse response = client.execute(httpGet); 
     StatusLine statusLine = response.getStatusLine(); 
     int statusCode = statusLine.getStatusCode(); 
     if (statusCode == 200) { 
     HttpEntity entity = response.getEntity(); 
     InputStream content = entity.getContent(); 
     BufferedReader reader = new BufferedReader(new InputStreamReader(content)); 
     String line; 
     while ((line = reader.readLine()) != null) { 
      builder.append(line); 
     } 
     } else { 
     Log.e(MainActivity.class.toString(), "Failed to download file"); 
     } 
    } catch (ClientProtocolException e) { 
     e.printStackTrace(); 
    } catch (IOException e) 
    { 
     e.printStackTrace(); 
    } 
    return builder.toString(); 
    }

最後我的微調代碼工作，

String readFeed = readFeed(); 
    // you can use this array to find the state ID based on name 
    ArrayList<SpinnerFeed> allStates = new ArrayList<SpinnerFeed>(); 
    // you can use this array to populate your spinner 
    ArrayList<String> states_array = new ArrayList<String>();  

    try { 
     JSONObject json = new JSONObject(readFeed); 
     JSONArray jsonArray = new JSONArray(json.optString("states")); 
     for (int i = 0; i < jsonArray.length(); i++) { 
      JSONObject jsonObject = jsonArray.getJSONObject(i); 
      SpinnerFeed statespinner = new SpinnerFeed(); 
      statespinner.setName(jsonObject.optString("stateName")); 
      statespinner.setId(jsonObject.optString("stateID")); 
      allStates.add(statespinner); 
      states_array.add(jsonObject.optString("stateName")); 
     } 
     } catch (Exception e) { 
     e.printStackTrace(); 
     } 

    Spinner spinner = (Spinner) findViewById(R.id.planets_spinner); 
    spinner.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, states_array)); 

    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 
     public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { 
      Object item = parent.getItemAtPosition(position); 
      int pos = parent.getSelectedItemPosition(); 

     } 
     public void onNothingSelected(AdapterView<?> parent) { 
     } 
    });

我得到記錄只需要弄清楚如何得到所選商品的編號

parent.getItemAtPosition(position); //gives me name 

    parent.getSelectedItemPosition(); //gives me position

由於事先

來源

2013-10-24 androidBeckhamania

在上itemselected方法

寫：

SpinnerFeed statespinner = allstates.get(position); 
String id = statespinner.getId(); // to get the id

來源

2013-10-24 10:36:45

Android的微調小問題

回答

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