Android: Spinner not showing the selected value

2019-05-14 06:37发布

I have a spinner and drop down list, the value for the spinner is getting from JSON parsing.My problem is the value is setting into the spinner but when i select a value form the drop down it is not showing in the spinner as selected, it is always blank.

I initialize the spinner as

final Spinner spinner = (Spinner) v.findViewById(R.id.spinner);
final List<String> money = new ArrayList<String>();

Assync task Api parsing onSuccess

for (int i = 0; i < jsonArray.length(); i++) {
     JSONObject c = jsonArray.getJSONObject(i);
     String amount = c.getString("amount");
     money.add(amount+" "+euro);                            
     }
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this.getActivity(), android.R.layout.simple_spinner_item, money);
    dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner.setAdapter(dataAdapter);

I notice that before parsing if set a value in spinner like money.add("0"+" "+euro); , at the time all the value is showing in the spinner.

Can anyone please tell me where am wrong, why it is not showing the selected value in the spinner

1条回答
淡お忘
2楼-- · 2019-05-14 07:38

This will helps you :-

   spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1, int pos, long id) {
          //  selectedItem = money[position];
                     //OR
          spinner.setSelection(arrayAdapter.getPosition(pos));
         }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
        }
    });
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