Question

在经典版本中，我的适配器运行良好。在我决定在列表末尾添加一个按钮后，应用程序开始崩溃。我在ArrayIndexOutOfBoundsException中有getItemId()，但无法弄清楚如何修复它。找到按钮实现here

方法onCreateViewHolder()，onBindViewHolder()和类`ViewHolder不包含任何显着的内容，所以我只是指出它们存在。

适配器：

public class PersonAdapter
        extends RealmRecyclerViewAdapter<Person, RecyclerView.ViewHolder> {

private Realm realm;
private PersonFragment personFragment;
private OrderedRealmCollection<Person> adapterData;

public PersonAdapter(PersonFragment fragment, Realm realm, OrderedRealmCollection<Person> collection) {
    super(collection, true, true);
    this.realm = realm;
    this.adapterData = collection;
    this.personFragment = fragment;
    setHasStableIds(true);
}

@Override
public int getItemViewType(int position) {
    return (position == adapterData.size()) ? R.layout.rrv_button_add : R.layout.rrv_item;
}

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// see example above
}

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
    Person person = getData().get(position);
    PersonHolder personHolder = (ProductHolder) holder;
    if(position == adapterData.size()){
        //personHolder.button.setOnClickListener
    }
    else {
        personHolder.name.setText(person.getName());
    }
}

@Override
public long getItemId(int index) {
    return getItem(index).getId();
}

@Override
public int getItemCount() {
    return isDataValid() ? adapterData.size()+1 : 0;
}

private boolean isDataValid() {
    return adapterData != null && adapterData.isValid();
}

public class ProductHolder
        extends RecyclerView.ViewHolder {
// all that's needed
}

}

我觉得解决方案是表面上的，但我完全没电了。请指出我的错误

如何在RealmRecyclerView的末尾添加一个按钮？

0 个答案: