我想從服務器獲取數據到我的微調,但它沒有顯示任何項目在微調,我也沒有得到任何logcat錯誤也..我採取了這個從1個例子,在我的JSON輸出,我只想抓取國家的名字..但它不顯示任何:在android中沒有將服務器項目放入我的微調器中?
這是我的java類:
pmcountry = (Spinner) findViewById(R.id.country);
//citySpinner = (Spinner) findViewById(City);
//locationSpinner = (Spinner) findViewById(R.id.Location);
pmcountry .setOnItemSelectedListener(this);
country_list = new ArrayList<String>();
//location_list = new ArrayList<String>();
// city_list = new ArrayList<String>();
getData();
}
private void getData(){
StringRequest stringRequest = new StringRequest(Config.DATA_URL,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
JSONObject j = null;
try {
Log.d("Test",response);
JSONArray result = new JSONArray(response);
//Calling method getCountry to get the Country from the JSON Array
getCountry(result);
} catch (JSONException e) {
e.printStackTrace();
}
}
},new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}});
RequestQueue requestQueue = Volley.newRequestQueue(this);
//Adding request to the queue
requestQueue.add(stringRequest);
}
private void getCountry(JSONArray jsonArrayCountry){
//Traversing through all the items in the json array
List<Country> countries = new ArrayList<>();
try {
String country_name, country_code;
JSONObject countries_object;
for (int i = 0; i < jsonArrayCountry.length(); i++) {
countries_object = jsonArrayCountry.getJSONObject(i);
country_code = countries_object.getString("id");
country_name = countries_object.getString("Name");
countries.add(new Country(country_code, country_name));
}
/*ArrayAdapter countryAdapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_dropdown_item, countries);
pmcountry.setPrompt("--Select Country--");
pmcountry.setAdapter(countryAdapter);
pmcountry.setAdapter(new NothingSelectedSpinnerAdapter(countryAdapter,
R.layout.contact_spinner_row_nothing_selected,this));*/
pmcountry.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
});
} catch (JSONException e) {
}
}
,但它的工作在我的另一個項目中,我只是試着用這個JSON輸出.1更多的東西在輸出中只有名稱給出..而我嘗試使用ID也..如果我嘗試刪除country_code ..顯示錯誤 – user7316606