Question

我可以使用API中的数组列表填充微调器。但是无法从微调器中选择或填充所选项目并向用户显示。

onItemSelected方法无法获得所选项目在微调器中的位置。

CustomSpinnerAdapter.java

public class CustomSpinnerAdapter extends BaseAdapter {
Context context;
List<String> userNames;
LayoutInflater inflter;

public CustomSpinnerAdapter(Context applicationContext, List<String> userNames) {
    this.context = applicationContext;
    this.userNames = userNames;
    inflter = (LayoutInflater.from(applicationContext));
}

@Override
public int getCount() {
    return userNames.size();
}

@Override
public Object getItem(int i) {
    return userNames.get(i);
}

@Override
public long getItemId(int i) {
    return 0;
}

@NonNull
@SuppressLint({"ViewHolder", "InflateParams"})
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
    view = inflter.inflate(R.layout.custom_spinner_item, null);
    CustomTextView names = (CustomTextView) view.findViewById(R.id.tv_spinner_item);
    names.setText(userNames.get(i));
    return view;
   }
}

我的逻辑在片段中。

private SpinnerAdapter customAdapter;
private List<String> eqIds = new ArrayList<>;

 apiInterface = ApiRequest.createService(ApiInterface.class);
    Call<EquipmentTypeModel> call = apiInterface.getEquipmentType("application/json", token, id);

    call.enqueue(new Callback<EquipmentTypeModel>() {
        @Override
        public void onResponse(Call<EquipmentTypeModel> call, Response<EquipmentTypeModel> response) {
            if (response.isSuccessful()) {
                eqIds.addAll(response.body().getData().getEquipmentList().getEquipIds());
            }
        }

        @Override
        public void onFailure(Call<EquipmentTypeModel> call, Throwable t) {

        }
    });
    customAdapter = new CustomSpinnerAdapter(mContext, eqIds);
    spTypeModel.setAdapter(customAdapter);
    spTypeModel.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            Toast.makeText(mContext, String.valueOf(parent.getAdapter().getItem(position)), Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onNothingSelected(AdapterView<?> parent) {

        }
    });

Answer 1

尝试一下是否可行（它将向您显示价值，而不是排名）

  @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        Toast.makeText(mContext, parent.getItemAtPosition(position).toString(), Toast.LENGTH_SHORT).show();
    }

OnItemSelected不适用于自定义微调器适配器类

1 个答案: