[英]Add click listener to Generic RecyclerView Adapter
Edit 编辑
As It is a genericAdapter not simple one and I know the methods to add click listener. 因为它是一个genericAdapter并不简单,我知道添加点击监听器的方法。 And it is not a good practice to do this in
onCreateViewHolder
. 在
onCreateViewHolder
执行此操作并不是一个好习惯。 So that's why I need a better suggestion 所以这就是为什么我需要一个更好的建议
I have created a Generic Adapter for RecyclerView in
android
.我在
android
为RecyclerView创建了一个通用适配器 。 Now I want some suggestion to improve it.现在我想要一些改进它的建议。 And how could I add clickListener to it.
我怎么能添加clickListener。
GenericAdapter.java GenericAdapter.java
public abstract class GenericAdapter<T> extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private Context context;
private ArrayList<T> items;
private OnRecyclerItemClicked onRecyclerItemClicked;
public abstract RecyclerView.ViewHolder setViewHolder(ViewGroup parent);
public abstract void onBindData(RecyclerView.ViewHolder holder, T val);
public GenericAdapter(Context context, ArrayList<T> items){
this.context = context;
this.items = items;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
RecyclerView.ViewHolder holder = setViewHolder(parent);
return holder;
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
onBindData(holder,items.get(position));
}
@Override
public int getItemCount() {
return items.size();
}
public void addItems( ArrayList<T> savedCardItemz){
items = savedCardItemz;
this.notifyDataSetChanged();
}
public T getItem(int position){
return items.get(position);
}
public void setOnRecyclerItemClicked(OnRecyclerItemClicked onRecyclerItemClicked){
this.onRecyclerItemClicked = onRecyclerItemClicked;
}
public interface OnRecyclerItemClicked{
void onItemClicked(View view,int position);
}
}
And Call it like 并称之为
adapter = new GenericAdapter<MyModelClass>(context,listOfModelClass) {
@Override
public RecyclerView.ViewHolder setViewHolder(ViewGroup parent) {
final View view = LayoutInflater.from(context).inflate(R.layout.item_recycler_view, parent, false);
AViewHolder viewHolder = new AViewHolder(context, view);
return viewHolder;
}
@Override
public void onBindData(RecyclerView.ViewHolder holder1, MyModelClass val) {
MyModelClass currentCard = val;
AViewHolder holder = (AViewHolder)holder1;
holder.cardNumber.setText(currentCard.getDisplayNumber());
holder.cardHolderName.setText(currentCard.getCardHolderName());
}
};
mRecyclerView.setAdapter(adapter);
Now how and where could I add a click listener. 现在我如何以及在哪里添加点击监听器。 As adding click listener to onBindData is an overhead.
向onBindData添加click侦听器是一种开销。 Need suggestion.
需要建议。
Have you tried adding a ViewHolder and add the clicklistener to it 您是否尝试过添加ViewHolder并将clicklistener添加到其中
Now GenericAdapter.java. 现在GenericAdapter.java。
public abstract class GenericAdapter<T> extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private Context context;
private List<T> items;
private OnRecyclerItemClicked onRecyclerItemClicked;
public abstract RecyclerView.ViewHolder setViewHolder(ViewGroup parent , OnRecyclerItemClicked onRecyclerItemClicked);
public abstract void onBindData(RecyclerView.ViewHolder holder, T val);
public abstract OnRecyclerItemClicked onGetRecyclerItemClickListener();
public GenericAdapter(Context context, List<T> items){
this.context = context;
this.items = items;
onRecyclerItemClicked = onGetRecyclerItemClickListener();
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
RecyclerView.ViewHolder holder = setViewHolder(parent , onRecyclerItemClicked);
return holder;
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
onBindData(holder,items.get(position));
}
@Override
public int getItemCount() {
return items.size();
}
public void setItems( ArrayList<T> savedCardItemz){
items = savedCardItemz;
this.notifyDataSetChanged();
}
public T getItem(int position){
return items.get(position);
}
public interface OnRecyclerItemClicked{
void onItemClicked(View view,int position);
}
}
And calling it like this 并且这样称呼它
GenericAdapter<CreditCardItemBO> adaptering = new GenericAdapter<CreditCardItemBO>(mContext,new ArrayList<CreditCardItemBO>()) {
@Override
public RecyclerView.ViewHolder setViewHolder(ViewGroup parent, OnRecyclerItemClicked onRecyclerItemClicked) {
final View view = LayoutInflater.from(mContext).inflate(R.layout.item_save_credit_card, parent, false);
CreditCardViewHolder viewHolder = new CreditCardViewHolder(mContext, view,onRecyclerItemClicked);
return viewHolder;
}
@Override
public void onBindData(RecyclerView.ViewHolder holder, CreditCardItemBO val) {
}
@Override
public OnRecyclerItemClicked onGetRecyclerItemClickListener() {
return new OnRecyclerItemClicked() {
@Override
public void onItemClicked(View view, int position) {
}
};
}
};
You can add the listener in the activity you have declared the RecyclerView: 您可以在已声明为RecyclerView的活动中添加侦听器:
recyclerView.addOnItemTouchListener(new RecyclerTouchListener(this, recyclerView,
new RecyclerTouchListener.ClickListener() {
@Override
public void onClick(View view, int position) {
//Handle the action
}
}
@Override
public void onLongClick(View view, int position) {
}
}));
I have implemented ViewHolder in Santa solution like this: 我在Santa解决方案中实现了ViewHolder,如下所示:
public class EmployeeViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private TextView employeeName;
private BaseRecyclerAdapter.OnRecyclerItemClicked mOnRecyclerItemClicked;
public EmployeeViewHolder(View view, BaseRecyclerAdapter.OnRecyclerItemClicked onRecyclerItemClicked) {
super(view);
employeeName = (TextView) view.findViewById(R.id.employee_name);
mOnRecyclerItemClicked = onRecyclerItemClicked;
view.setOnClickListener(this);
}
@Override
public void onClick(View view) {
mOnRecyclerItemClicked.onItemClicked(view, getAdapterPosition());
}
public TextView getEmployeeName() {
return employeeName;
}
}
If you need the context ad it in to constructor as a parameter. 如果您需要上下文,请将其作为参数添加到构造函数中。
I have created a generic adapter, the aar and the sources are at this url : 我创建了一个通用适配器,aar和源代码在这个url :
it's easy usage: 它很容易使用:
RecyclerAdapter<Customer> mAdapter = new RecyclerAdapter(customerList, CustomerViewHolder.class);
add attach listener (lambda sample) 添加附加侦听器(lambda示例)
RecyclerItemClickListener.affectOnItemClick(mRecycler, (position, view1) -> {
//action
});
see Url link more details 请参阅Url链接更多详细信息
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