Question

我遇到自定义数组适配器的问题。我在堆栈上阅读了关于它的所有线程，仍然无法解决这个问题。我使用了这个问题的代码（它没有用，所以我做了一些小改动：Spinner with custom ArrayAdapter for objects not displaying selected item

问题是我创建了我的适配器并且： 1. getCount显示正确的值（244） 2.没有调用getView 3.没有调用getDropdown视图。

你可以帮我解决这个问题吗？

适配器类：

public class DishesFilterCustomArrayAdapter extends ArrayAdapter<Dish> {

private List<Dish> items;
private Context context;
private Activity activity;

public DishesFilterCustomArrayAdapter(@NonNull Context context, int resource, int textViewResourceId, @NonNull List<Dish> objects) {
    super(context, resource, textViewResourceId, objects);
    this.items = objects;
    this.context = context;
}

@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
    TextView v = (TextView) super.getView(position, convertView, parent);

    if (v == null) {
        v = new TextView(context);
    }
    v.setTextColor(context.getResources().getColor(R.color.blue_light));
    v.setText(items.get(position).dishName);

    return v;
}

@Override
public Dish getItem(int position) {
    return items.get(position);
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View v = convertView;

    if (v == null) {
        LayoutInflater inflater = LayoutInflater.from(context);
        v = inflater.inflate(R.layout.payment_mode_payer_item, null);
    }
    TextView lbl = (TextView) v.findViewById(R.id.textViewForAdapter);
    lbl.setTextColor(context.getResources().getColor(R.color.blue_light));
    lbl.setText(items.get(position).dishName);

    return convertView;
}

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

public List<Dish> getItems() {
    return items;
}

片段中的代码：

        mDishList = new ArrayList<>();
        mDishList.addAll(getAllDishesSegregatedList(getAllDishesList()));
        mDishesAdapter = new DishesFilterCustomArrayAdapter(getContext(), R.layout.payment_mode_payer_item, R.id.textViewForAdapter, mDishList);
        //mDishesAdapter.add(new Dish(getString(R.string.filter_receipt_history_by_dish_name)));
        dishesFilterSpinner.setAdapter(mDishesAdapter);

mDishList大小为244，它与getCount（）值匹配。

Answer 1

问题解决了。第一个错误是我有两个具有相同ID的视图，我将我的适配器设置为不可见的。

其次是我在自定义适配器的代码中出现了一些错误。我在下面发布。

public class DishesFilterCustomArrayAdapter extends ArrayAdapter<Dish> {

private List<Dish> items;
private Context context;

public DishesFilterCustomArrayAdapter(@NonNull Context context, int resource, int textViewResourceId, @NonNull List<Dish> objects) {
    super(context, resource, textViewResourceId, objects);
    this.items = objects;
    this.context = context;
}

@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
    View v = convertView;

    if (v == null) {
        LayoutInflater inflater = LayoutInflater.from(context);
        v = inflater.inflate(R.layout.receipt_history_spinner_item, null);
    }
    TextView lbl = (TextView) v.findViewById(R.id.receiptHistorySpinnerItemTextView);
    lbl.setTextColor(context.getResources().getColor(R.color.blue_light));
    lbl.setText(items.get(position).dishName);

    return v;
}

@Override
public Dish getItem(int position) {
    return items.get(position);
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View v = convertView;

    if (v == null) {
        LayoutInflater inflater = LayoutInflater.from(context);
        v = inflater.inflate(R.layout.receipt_history_spinner_item, null);
    }
    TextView lbl = (TextView) v.findViewById(R.id.receiptHistorySpinnerItemTextView);
    lbl.setTextColor(context.getResources().getColor(R.color.blue_light));
    lbl.setText(items.get(position).dishName);

    return v;
}

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

public List<Dish> getItems() {
    return items;
}

Mike.M谢谢你的帮助！

自定义ArrayAdapter for Spinner getView（）未调用

1 个答案: