我在 fragment 中制作了一个水平回收 View 。现在,当我点击任何项目时,我看不到点击监听器在工作。这是我的适配器类代码:
public class FeaturedProductsAdapter extends RecyclerView.Adapter<FeaturedProductsAdapter.CustomViewHolder> {
private List<FeaturedProductInfo> feedItemList;
private Context mContext;
public FeaturedProductsAdapter(Context context, List<FeaturedProductInfo> feedItemList) {
this.feedItemList = feedItemList;
this.mContext = context;
}
public class CustomViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
protected ImageView imageView;
protected TextView textView,priceView;
private Context context;
public CustomViewHolder(View view,Context context) {
super(view);
this.context=context;
this.imageView = (ImageView) view.findViewById(R.id.thumbnail);
this.textView = (TextView) view.findViewById(R.id.prodTitle);
this.priceView = (TextView) view.findViewById(R.id.prodPrice);
view.setOnClickListener(this);
}
@Override
public void onClick(View view) {
int position = getLayoutPosition(); // gets item position
Log.e("Check", position + "");
FeaturedProductInfo user = feedItemList.get(position);//[position];
// We can access the data within the views
Intent intent = new Intent(context, ProductDescription.class);
intent.putExtra("id", user.getId());
mContext.startActivity(intent);
}
}
@Override
public CustomViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(mContext).inflate(R.layout.featured_product_list_item_card, null);
Context context = viewGroup.getContext();
CustomViewHolder viewHolder = new CustomViewHolder(view,context);
return viewHolder;
}
@Override
public void onBindViewHolder(CustomViewHolder customViewHolder, int i) {
FeaturedProductInfo feedItem = feedItemList.get(i);
//Download image using picasso library
if(!feedItem.getUrl().contains("."))
{
feedItem.setUrl("nothing");
}
Picasso.with(mContext).load(feedItem.getUrl())
.error(R.drawable.unavailable)
.placeholder(R.drawable.unavailable)
.resize(110,110)
.into(customViewHolder.imageView);
//Setting text view title
customViewHolder.textView.setText(feedItem.getTitle());
customViewHolder.priceView.setText(feedItem.getPrice());
//Log.e("Featured: ","SET");
}
@Override
public int getItemCount() {
return (null != feedItemList ? feedItemList.size() : 0);
}
我想我不知道如何正确使用 View 持有者。虽然我在其他 Activity 中为 recyclerView 使用了相同的代码,但它的效果非常好。
最佳答案
1.ViewHolder
中的简单点击处理程序
RecyclerView
没有将点击处理程序附加到项目的特殊规定,这与 ListView
不同,ListView
具有方法 setOnItemClickListener()
。为了达到类似的效果,我们可以在适配器的 ViewHolder
中附加点击事件:
public class ContactsAdapter extends RecyclerView.Adapter<ContactsAdapter.ViewHolder> {
// ...
// Used to cache the views within the item layout for fast access
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView tvName;
public TextView tvHometown;
private Context context;
public ViewHolder(Context context, View itemView) {
super(itemView);
this.tvName = (TextView) itemView.findViewById(R.id.tvName);
this.tvHometown = (TextView) itemView.findViewById(R.id.tvHometown);
// Store the context
this.context = context;
// Attach a click listener to the entire row view
itemView.setOnClickListener(this);
}
// Handles the row being being clicked
@Override
public void onClick(View view) {
int position = getLayoutPosition(); // gets item position
User user = users.get(position);
// We can access the data within the views
Toast.makeText(context, tvName.getText(), Toast.LENGTH_SHORT).show();
}
}
// ...
}
另一种方式是我的首选方式..但这也是一个很好的方式。
我的 onBindViewHolder
@Override
public void onBindViewHolder(CategoryViewHolder holder, int position) {
Category category = mCategories.get(position);
holder.tvTitle.setText(category.getTitle());
holder.tvDescription.setText(category.getDescription());
holder.rlContainer.setOnClickListener(mClickListener);
holder.rlContainer.setTag(holder);
}
我的类(class)(View.OnClickListner的Adapter对象)
View.OnClickListener mClickListener = new View.OnClickListener() {
@Override
public void onClick(View view) {
CategoryViewHolder holder = (CategoryViewHolder) view.getTag();
int position = holder.getAdapterPosition();
startAppointmentBookingFor(mCategories.get(position));
}
};
所以基本上将监听器附加到您的 holder 中的任何 View (我尝试只将它放在容器上),然后在 onclick
上将其提取出来并处理位置等。
关于android - RecyclerView OnClick 不工作,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35584584/