使用 3rd 方 API 将适配器设置为微调器

Question

我正在使用this 3rd 方库来搜索微调器。每件事都很好，但问题是当我将适配器设置为微调器时，所以在下拉列表中我得到的是对象引用而不是字符串。 Web 服务使用改造库填充的数组列表。

以下是我的活动：

countriesCustomAdapterInr = new CountriesCustomAdapterInr(getActivity(), R.layout.custom_spinner_items, arrayList,res);
spinner.setAdapter(countriesCustomAdapterInr); 

spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
                            @Override
                            public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
                                Toast.makeText(getActivity(), ""+arrayList.get(i).getFull_name()+i, Toast.LENGTH_LONG).show();
                            }

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

                            }
                        });  

这是我的模型类：

public class CurrencyConverter {

    @SerializedName("short_name")
    private String short_name;

    @SerializedName("full_name")
    private String full_name;

    @SerializedName("flag")
    private String flag;

    public CurrencyConverter(String short_name, String full_name, String flag) {
        this.short_name = short_name;
        this.full_name = full_name;
        this.flag = flag;
    }

    public CurrencyConverter() {}

    public String getShort_name() {
        return short_name;
    }

    public void setShort_name(String short_name) {
        this.short_name = short_name;
    }

    public String getFull_name() {
        return full_name;
    }

    public void setFull_name(String full_name) {
        this.full_name = full_name;
    }

    public String getFlag() {
        return flag;
    }

    public void setFlag(String flag) {
        this.flag = flag;
    }

}

我的适配器：

public class CountriesCustomAdapterInr extends ArrayAdapter<String> {

    private ArrayList data;
    public Resources res;
    private LayoutInflater inflater;

    public CountriesCustomAdapterInr(
            FragmentActivity activitySpinner,
            int textViewResourceId,
            ArrayList objects,
            Resources resLocal)
    {
        super(activitySpinner, textViewResourceId, objects);

        data     = objects;
        res      = resLocal;
        inflater = (LayoutInflater) activitySpinner.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public View getDropDownView(int position, View convertView, @NonNull ViewGroup parent) {
        return getCustomView(position, convertView, parent);
    }

    @NonNull
    @Override
    public View getView(int position, View convertView, @NonNull ViewGroup parent) {
        return getCustomView(position, convertView, parent);
    }

    private View getCustomView(int position, View convertView, ViewGroup parent) {

        View row = inflater.inflate(R.layout.custom_spinner_items, parent, false);

        CurrencyConverter tempValues = null;
        tempValues = (CurrencyConverter) data.get(position);

        TextView label        = (TextView)row.findViewById(R.id.textView_short_name);
        TextView sub          = (TextView)row.findViewById(R.id.textView_full_name);
        ImageView flag = (ImageView)row.findViewById(R.id.imageView_flag);
        TextView line = (TextView)row.findViewById(R.id.row);
        if(position==0){
            label.setText("INR");
            sub.setText("India");
            flag.setImageResource(R.drawable.ind);
            line.setVisibility(View.GONE);
        }
        else
        {
            // Set values for spinner each row
            label.setText(tempValues.getShort_name());
            sub.setText(tempValues.getFull_name());
            Picasso.with(getContext()).load("http://currencyconvertor.ccube9projects.com/uploads/country_flag/"+ tempValues.getFlag()).into(flag);
        }


        return row;
    }

我还附上了图片以进行更多说明。请问有人可以帮忙吗？我浪费了我的 2 天，但我没有得到任何答案。请帮忙。

Answer 1

简单的答案是您无法使用此库设置自己的自定义适配器。如果您查看他的 SearchableListDialog (https://github.com/miteshpithadiya/SearchableSpinner/blob/master/searchablespinnerlibrary/src/main/java/com/toptoche/searchablespinnerlibrary/SearchableListDialog.java#L160) 的第 160 行，它总是将适配器设置为仅用于字符串的简单数组适配器。

如果您想要一种方法来实际实现您想要的，您可以将他的库复制到您的代码中并修改您需要的内容。例如，将 SearchableListDialog 中的第 160 行更改为：

listAdapter = new CountriesCustomAdapterInr(getContext(), R.layout.custom_spinner_items, items, getResources());

您还需要将适配器的构造函数更改为：

public CountriesCustomAdapterInr(
    Context context,
    int textViewResourceId,
    List<CurrencyConverter> objects,
    Resources resLocal) {
    super(context, textViewResourceId, objects);

    data = objects;
    res = resLocal;
    inflater = (LayoutInflater) context.getSystemService(Context
        .LAYOUT_INFLATER_SERVICE);
}

最后，您需要在 CurrencyConverter 中覆盖 toString 才能使搜索正常工作：

@Override
public String toString()
{
    return short_name;
}