我正在尝试根据Android官方注释站点的以下教程在我的活动中实现简单的回收器视图:适配器链接
但是,当我完成所有步骤并尝试实现@ItemClick
方法时,它给我以下错误:
错误:(84, 36( 错误: 不兼容的类型: 回收器视图无法转换为适配器视图
在"我生成的活动代码"下突出显示以下代码:
...((AdapterView<?> ) this.miestnostiList).setOnItemClickListener(new OnItemClickListener() {...
根据指南,我创建了以下基类:
public abstract class RecyclerViewAdapterBase<T, V extends View> extends RecyclerView.Adapter<ViewWrapper<V>> {
protected List<T> items = new ArrayList<T>();
@Override
public int getItemCount() {
return items.size();
}
@Override
public final ViewWrapper<V> onCreateViewHolder(ViewGroup parent, int viewType) {
return new ViewWrapper<V>(onCreateItemView(parent, viewType));
}
protected abstract V onCreateItemView(ViewGroup parent, int viewType);
}
public class ViewWrapper<V extends View> extends RecyclerView.ViewHolder {
private V view;
public ViewWrapper(V itemView) {
super(itemView);
view = itemView;
}
public V getView() {
return view;
}
}
然后我创建了我的行视图项目,如下所示:
@EViewGroup(R.layout.activity_list_miestnosti_row)
public class MiestnostItemView extends LinearLayout{
@ViewById(R.id.txt_miestnost_row_nazov)
TextView nazov;
public MiestnostItemView(Context context) {
super(context);
}
public void bind(Miestnost miestnost){
nazov.setText(miestnost.getNazov());
}
}
最后是我的适配器类:
public class ListMiestnostiAdapter extends RecyclerViewAdapterBase<Miestnost, MiestnostItemView> {
@RootContext
Context context;
@Override
protected MiestnostItemView onCreateItemView(ViewGroup parent, int viewType) {
return MiestnostItemView_.build(context);
}
@Override
public void onBindViewHolder(ViewWrapper<MiestnostItemView> holder, int position) {
MiestnostItemView view = holder.getView();
Miestnost miestnost = items.get(position);
view.bind(miestnost);
}
}
在我的活动下,我在@AfterViews
部分中初始化我的适配器:
@ViewById
RecyclerView miestnostiList;
ListMiestnostiAdapter adapter;
@AfterViews
void bindAdapter() {
GetData();//fetch data
adapter = new ListMiestnostiAdapter();
adapter.addData(miestnosti);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
miestnostiList.setLayoutManager(layoutManager);
miestnostiList.setItemAnimator(new DefaultItemAnimator());
miestnostiList.addItemDecoration(new DividerItemDecoration(this, LinearLayoutManager.VERTICAL));
miestnostiList.setAdapter(adapter);
}
这是我@ItemClick方法:
@ItemClick
void miestnostiListItemClicked(Miestnost miestnost){
Log.i("", "iteClicked: ");
}
我在这里错过了什么?
我认为@ItemClick不适用于RecyclerView。您可以通过两种方式继续操作:
1-更改您的RecyclerViewAdapterBase添加onClick支持,然后将该方法覆盖到子适配器中,如下所示:
public abstract class RecyclerViewAdapterBase<T, V extends View & ViewWrapper.Binder<T>> extends RecyclerView.Adapter<ViewWrapper<T, V>> {
protected List<T> mItems = new ArrayList<T>();
@Override
public final ViewWrapper<T, V> onCreateViewHolder(ViewGroup parent, int viewType) {
return new ViewWrapper<T, V>(onCreateItemView(parent, viewType));
}
protected abstract V onCreateItemView(ViewGroup parent, int viewType);
@Override
public final void onBindViewHolder(ViewWrapper<T, V> viewHolder, int position) {
V view = viewHolder.getView();
T data = mItems.get(position);
/*************************************************************/
* AT THIS POINT IT TRY TO SET A CLICK LISTENER */
/*************************************************************/
setOnClickListener(view, data);
view.bind(data);
}
@Override
public int getItemCount() {
return null == mItems ? 0 : mItems.size();
}
public void add(T item) {
mItems.add(item);
notifyDataSetChanged();
}
public void addAll(Collection<T> collection) {
mItems.addAll(collection);
notifyDataSetChanged();
}
public void clear() {
mItems.clear();
}
/**
* override this into child adapter to manage click event
*/
public void setOnClickListener(View v, T item) {}
}
这是子适配器
@EBean
public class ChildAdapter extends RecyclerViewAdapterBase<Child, ChildView> {
@RootContext
Context ctx;
@Bean(ChildFinder.class)
IChildFinder finder;
@Bean
OttoBus mOttoBus;
/**
* get data by finder
*/
public void initAdapter() {
mItems = finder.findAll();
}
@Override
public int getItemViewType(int position) {
return position;
}
@Override
protected ChildView onCreateItemView(ViewGroup parent, int viewType) {
return ChildView_.build(ctx);
}
@Override
public void setOnClickListener(View v, final Child item) {
v.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mOttoBus.post(new RequestChildEvent(item));
}
});
}
}
2-否则,如果您使用的是自定义视图,则可以遵循事件驱动方法绑定,直接单击视图(例如在自定义视图的根视图上(,然后将事件发送到必须对单击做出反应的组件