Java 为什么 RecyclerView 没有 onItemClickListener()？

Question

提问by Tarun Varshney

I was exploring RecyclerViewand I was surprised to see that RecyclerViewdoes not have onItemClickListener().

我正在探索RecyclerView，我很惊讶地看到RecyclerView没有onItemClickListener()。

I've two question.

我有两个问题。

Main Question

主要问题

I want to know why Google removed onItemClickListener()?

我想知道为什么谷歌删除了onItemClickListener()？

Is there a performance issue or something else?

是否存在性能问题或其他问题？

Secondary Question

次要问题

I solved my problem by writing onClickin my RecyclerView.Adapter:

我通过写onClick在我的解决了我的问题RecyclerView.Adapter：

public static class ViewHolder extends RecyclerView.ViewHolder implements OnClickListener {

    public TextView txtViewTitle;
    public ImageView imgViewIcon;

    public ViewHolder(View itemLayoutView) {
        super(itemLayoutView);
        txtViewTitle = (TextView) itemLayoutView.findViewById(R.id.item_title);
        imgViewIcon = (ImageView) itemLayoutView.findViewById(R.id.item_icon);
    }

    @Override
    public void onClick(View v) {

    }
}

Is this ok / is there any better way?

可以吗/有更好的方法吗？

Answer 1

采纳答案by MLProgrammer-CiM

tl;dr 2016Use RxJava and a PublishSubject to expose an Observable for the clicks.

tl;dr 2016使用 RxJava 和 PublishSubject 为点击公开 Observable。

public class ReactiveAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    String[] mDataset = { "Data", "In", "Adapter" };

    private final PublishSubject<String> onClickSubject = PublishSubject.create();

    @Override 
    public void onBindViewHolder(final ViewHolder holder, int position) {
        final String element = mDataset[position];

        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               onClickSubject.onNext(element);
            }
        });
    }

    public Observable<String> getPositionClicks(){
        return onClickSubject.asObservable();
    }
}

Original Post:

原帖：

Since the introduction of ListView, onItemClickListenerhas been problematic. The moment you have a click listener for any of the internal elements the callback would not be triggered but it wasn't notified or well documented (if at all) so there was a lot of confusion and SO questions about it.

自引入以来ListView，onItemClickListener一直存在问题。当您拥有任何内部元素的点击侦听器时，不会触发回调，但没有通知或详细记录（如果有的话），因此存在很多混淆和问题。

Given that RecyclerViewtakes it a step further and doesn't have a concept of a row/column, but rather an arbitrarily laid out amount of children, they have delegated the onClick to each one of them, or to programmer implementation.

鉴于这RecyclerView更进一步，并且没有行/列的概念，而是任意布置的子项数量，他们已将 onClick 委托给每个人，或委托给程序员实现。

Think of Recyclerviewnot as a ListView1:1 replacement but rather as a more flexible component for complex use cases. And as you say, your solution is what google expected of you. Now you have an adapter who can delegate onClick to an interface passed on the constructor, which is the correct pattern for both ListViewand Recyclerview.

想想Recyclerview还不如ListView1：1置换，而是作为复杂的使用情况更灵活的组件。正如您所说，您的解决方案正是谷歌对您的期望。现在你有一个适配器谁可以委托的onClick对构造函数，这是两者的正确的方式传递的接口ListView和Recyclerview。

public static class ViewHolder extends RecyclerView.ViewHolder implements OnClickListener {

    public TextView txtViewTitle;
    public ImageView imgViewIcon;
    public IMyViewHolderClicks mListener;

    public ViewHolder(View itemLayoutView, IMyViewHolderClicks listener) {
        super(itemLayoutView);
        mListener = listener;
        txtViewTitle = (TextView) itemLayoutView.findViewById(R.id.item_title);
        imgViewIcon = (ImageView) itemLayoutView.findViewById(R.id.item_icon);
        imgViewIcon.setOnClickListener(this);
        itemLayoutView.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if (v instanceof ImageView){
           mListener.onTomato((ImageView)v);
        } else {
           mListener.onPotato(v);
        }
    }

    public static interface IMyViewHolderClicks {
        public void onPotato(View caller);
        public void onTomato(ImageView callerImage);
    }

}

and then on your adapter

然后在你的适配器上

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {

   String[] mDataset = { "Data" };

   @Override
   public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
       View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.my_layout, parent, false);

       MyAdapter.ViewHolder vh = new ViewHolder(v, new MyAdapter.ViewHolder.IMyViewHolderClicks() { 
           public void onPotato(View caller) { Log.d("VEGETABLES", "Poh-tah-tos"); };
           public void onTomato(ImageView callerImage) {?Log.d("VEGETABLES", "To-m8-tohs"); }
        });
        return vh;
    }

    // Replace the contents of a view (invoked by the layout manager) 
    @Override 
    public void onBindViewHolder(ViewHolder holder, int position) {
        // Get element from your dataset at this position 
        // Replace the contents of the view with that element 
        // Clear the ones that won't be used
        holder.txtViewTitle.setText(mDataset[position]);
    } 

    // Return the size of your dataset (invoked by the layout manager) 
    @Override 
    public int getItemCount() { 
        return mDataset.length;
    } 
  ...

Now look into that last piece of code: onCreateViewHolder(ViewGroup parent, int viewType)the signature already suggest different view types. For each one of them you'll require a different viewholder too, and subsequently each one of them can have a different set of clicks. Or you can just create a generic viewholder that takes any view and one onClickListenerand applies accordingly. Or delegate up one level to the orchestrator so several fragments/activities have the same list with different click behaviour. Again, all flexibility is on your side.

现在看看最后一段代码：onCreateViewHolder(ViewGroup parent, int viewType)签名已经建议了不同的视图类型。对于它们中的每一个，您也需要一个不同的查看器，随后它们中的每一个都可以有一组不同的点击。或者，您可以创建一个通用的viewholder，它可以接受任何一个视图并onClickListener相应地应用。或者将一级委托给协调器，以便多个片段/活动具有相同的列表，但单击行为不同。同样，所有灵活性都在您身边。

It is a really needed component and fairly close to what our internal implementations and improvements to ListViewwere until now. It's good that Google finally acknowledges it.

它是一个真正需要的组件，与我们ListView迄今为止的内部实现和改进非常接近。好在谷歌终于承认了。

Answer 2

回答by Tarun Varshney

> How RecyclerView is different from Listview?

> RecyclerView 与 Listview 有何不同？

One difference is that there is LayoutManagerclass with RecyclerView by which you can manage your RecyclerViewlike-

一个区别是LayoutManagerRecyclerView有一个类，您可以通过它来管理您的喜欢RecyclerView-

Horizontalor Vertical scrolling by LinearLayoutManager
GridLayout by GridLayoutManager
Staggered GridLayout by StaggeredGridLayoutManager

水平或垂直滚动LinearLayoutManager
GridLayout by GridLayoutManager
交错的 GridLayout StaggeredGridLayoutManager

Like for horizontal scrolling for RecyclerView-

就像 RecyclerView 的水平滚动一样-

LinearLayoutManager llm = new LinearLayoutManager(context);
llm.setOrientation(LinearLayoutManager.HORIZONTAL);
recyclerView.setLayoutManager(llm);

Answer 3

回答by Abdulaziz Noor

I like this way and I'm using it

我喜欢这种方式并且我正在使用它

Inside

里面

public Adapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType)

Put

放

View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.view_image_and_text, parent, false);
v.setOnClickListener(new MyOnClickListener());

And create this class anywhere you want it

并在任何你想要的地方创建这个类

class MyOnClickListener implements View.OnClickListener {
    @Override
    public void onClick(View v) {
       int itemPosition = recyclerView.indexOfChild(v);
       Log.e("Clicked and Position is ",String.valueOf(itemPosition));
    }
}

I've read before that there is a better way but I like this way is easy and not complicated.

我之前读过有一种更好的方法，但我喜欢这种方法简单而不复杂。

Answer 4

回答by Wooff

How to put it all together example...

如何将它们放在一起示例...

onClick() handling
Cursor - RecyclerView

ViewHolder types

public class OrderListCursorAdapter extends CursorRecyclerViewAdapter<OrderListCursorAdapter.ViewHolder> {

private static final String TAG = OrderListCursorAdapter.class.getSimpleName();
private static final int ID_VIEW_HOLDER_ACTUAL = 0;
private static final int ID_VIEW_HOLDER = 1;

public OrderListCursorAdapter(Context context, Cursor cursor) {
    super(context, cursor);
}

public static class ViewHolderActual extends ViewHolder {
    private static final String TAG = ViewHolderActual.class.getSimpleName();
    protected IViewHolderClick listener;
    protected Button button;

    public ViewHolderActual(View v, IViewHolderClick listener) {
        super(v, listener);
        this.listener = listener;
        button = (Button) v.findViewById(R.id.orderList_item_button);
        button.setOnClickListener(this);
    }

    public void initFromData(OrderData data) {
        Log.d(TAG, "><initFromData(data=" + data + ")");
        orderId = data.getId();
        vAddressStart.setText(data.getAddressStart());
        vAddressEnd.setText(data.getAddressEnd());
    }

    @Override
    public void onClick(View view) {
        if (view instanceof Button) {
            listener.onButtonClick((Button) view, getPosition(), this);
        } else {
            super.onClick(view);
        }
    }

    public interface IViewHolderClick extends ViewHolder.IViewHolderClick {
        public void onButtonClick(Button button, int position, ViewHolder viewHolder);
    }
}

public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
    private static final String TAG = ViewHolder.class.getSimpleName();
    protected long orderId;
    protected IViewHolderClick listener;
    protected TextView vAddressStart;
    protected TextView vAddressEnd;
    protected TextView vStatus;

    public ViewHolder(View v, IViewHolderClick listener) {
        super(v);
        this.listener = listener;
        v.setOnClickListener(this);

        vAddressStart = (TextView) v.findViewById(R.id.addressStart);
        vAddressEnd = (TextView) v.findViewById(R.id.addressEnd);
        vStatus = (TextView) v.findViewById(R.id.status);
    }

    public void initFromData(OrderData data) {
        Log.d(TAG, "><initFromData(data=" + data + ")");
        orderId = data.getId();
        vAddressStart.setText(data.getAddressStart());
        vAddressEnd.setText(data.getAddressEnd());
    }

    public long getOrderId() {
        return orderId;
    }

    @Override
    public void onClick(View view) {
        listener.onCardClick(view, getPosition(), this);
    }

    public interface IViewHolderClick {
        public void onCardClick(View view, int position, ViewHolder viewHolder);
    }
}

@Override
public int getItemViewType(int position) {
    return position == 0 ? ID_VIEW_HOLDER_ACTUAL : ID_VIEW_HOLDER;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    Log.d(TAG, ">>onCreateViewHolder(parent=" + parent + ", viewType=" + viewType + ")");

    ViewHolder result;

    switch (viewType) {
        case ID_VIEW_HOLDER_ACTUAL: {
            View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_layout_actual, parent, false);
            result = new ViewHolderActual(itemView, new ViewHolderActual.IViewHolderClick() {
                @Override
                public void onCardClick(View view, int position, ViewHolder viewHolder) {
                    Log.d(TAG, "><onCardClick(view=" + view + ", position=" + position + ", viewHolder=" + viewHolder + ")");
                    Intent intent = new Intent(view.getContext(), OrderDetailActivity.class);
                    intent.putExtra(OrderDetailActivity.ARG_ORDER_ID, viewHolder.getOrderId());
                    view.getContext().startActivity(intent);
                }

                @Override
                public void onButtonClick(Button button, int position, ViewHolder viewHolder) {
                    Log.d(TAG, "><onButtonClick(button=" + button + ", position=" + position + ", viewHolder=" + viewHolder + ")");
                    Intent intent = new Intent(button.getContext(), OrderMapActivity.class);
                    intent.putExtra(OrderMapActivity.ARG_ORDER_ID, viewHolder.getOrderId());
                    button.getContext().startActivity(intent);
                }
            });
            break;
        }
        case ID_VIEW_HOLDER:
        default: {
            View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_layout, parent, false);
            result = new ViewHolder(itemView, new ViewHolder.IViewHolderClick() {
                @Override
                public void onCardClick(View view, int position, ViewHolder viewHolder) {
                    Log.d(TAG, "><onCardClick(view=" + view + ", position=" + position + ", viewHolder=" + viewHolder + ")");
                    Intent intent = new Intent(view.getContext(), OrderDetailActivity.class);
                    intent.putExtra(OrderDetailActivity.ARG_ORDER_ID, viewHolder.getOrderId());
                    view.getContext().startActivity(intent);
                }
            });
            break;
        }
    }

    Log.d(TAG, "<<onCreateViewHolder(parent=" + parent + ", viewType=" + viewType + ")= " + result);
    return result;
}

@Override
public void onBindViewHolder(ViewHolder viewHolder, Cursor cursor) {
    Log.d(TAG, "><onBindViewHolder(viewHolder=" + viewHolder + ", cursor=" + cursor + ")");
    final OrderData orderData = new OrderData(cursor);
    viewHolder.initFromData(orderData);
}
}

onClick() 处理
光标 - RecyclerView

ViewHolder 类型

public class OrderListCursorAdapter extends CursorRecyclerViewAdapter<OrderListCursorAdapter.ViewHolder> {

private static final String TAG = OrderListCursorAdapter.class.getSimpleName();
private static final int ID_VIEW_HOLDER_ACTUAL = 0;
private static final int ID_VIEW_HOLDER = 1;

public OrderListCursorAdapter(Context context, Cursor cursor) {
    super(context, cursor);
}

public static class ViewHolderActual extends ViewHolder {
    private static final String TAG = ViewHolderActual.class.getSimpleName();
    protected IViewHolderClick listener;
    protected Button button;

    public ViewHolderActual(View v, IViewHolderClick listener) {
        super(v, listener);
        this.listener = listener;
        button = (Button) v.findViewById(R.id.orderList_item_button);
        button.setOnClickListener(this);
    }

    public void initFromData(OrderData data) {
        Log.d(TAG, "><initFromData(data=" + data + ")");
        orderId = data.getId();
        vAddressStart.setText(data.getAddressStart());
        vAddressEnd.setText(data.getAddressEnd());
    }

    @Override
    public void onClick(View view) {
        if (view instanceof Button) {
            listener.onButtonClick((Button) view, getPosition(), this);
        } else {
            super.onClick(view);
        }
    }

    public interface IViewHolderClick extends ViewHolder.IViewHolderClick {
        public void onButtonClick(Button button, int position, ViewHolder viewHolder);
    }
}

public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
    private static final String TAG = ViewHolder.class.getSimpleName();
    protected long orderId;
    protected IViewHolderClick listener;
    protected TextView vAddressStart;
    protected TextView vAddressEnd;
    protected TextView vStatus;

    public ViewHolder(View v, IViewHolderClick listener) {
        super(v);
        this.listener = listener;
        v.setOnClickListener(this);

        vAddressStart = (TextView) v.findViewById(R.id.addressStart);
        vAddressEnd = (TextView) v.findViewById(R.id.addressEnd);
        vStatus = (TextView) v.findViewById(R.id.status);
    }

    public void initFromData(OrderData data) {
        Log.d(TAG, "><initFromData(data=" + data + ")");
        orderId = data.getId();
        vAddressStart.setText(data.getAddressStart());
        vAddressEnd.setText(data.getAddressEnd());
    }

    public long getOrderId() {
        return orderId;
    }

    @Override
    public void onClick(View view) {
        listener.onCardClick(view, getPosition(), this);
    }

    public interface IViewHolderClick {
        public void onCardClick(View view, int position, ViewHolder viewHolder);
    }
}

@Override
public int getItemViewType(int position) {
    return position == 0 ? ID_VIEW_HOLDER_ACTUAL : ID_VIEW_HOLDER;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    Log.d(TAG, ">>onCreateViewHolder(parent=" + parent + ", viewType=" + viewType + ")");

    ViewHolder result;

    switch (viewType) {
        case ID_VIEW_HOLDER_ACTUAL: {
            View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_layout_actual, parent, false);
            result = new ViewHolderActual(itemView, new ViewHolderActual.IViewHolderClick() {
                @Override
                public void onCardClick(View view, int position, ViewHolder viewHolder) {
                    Log.d(TAG, "><onCardClick(view=" + view + ", position=" + position + ", viewHolder=" + viewHolder + ")");
                    Intent intent = new Intent(view.getContext(), OrderDetailActivity.class);
                    intent.putExtra(OrderDetailActivity.ARG_ORDER_ID, viewHolder.getOrderId());
                    view.getContext().startActivity(intent);
                }

                @Override
                public void onButtonClick(Button button, int position, ViewHolder viewHolder) {
                    Log.d(TAG, "><onButtonClick(button=" + button + ", position=" + position + ", viewHolder=" + viewHolder + ")");
                    Intent intent = new Intent(button.getContext(), OrderMapActivity.class);
                    intent.putExtra(OrderMapActivity.ARG_ORDER_ID, viewHolder.getOrderId());
                    button.getContext().startActivity(intent);
                }
            });
            break;
        }
        case ID_VIEW_HOLDER:
        default: {
            View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_layout, parent, false);
            result = new ViewHolder(itemView, new ViewHolder.IViewHolderClick() {
                @Override
                public void onCardClick(View view, int position, ViewHolder viewHolder) {
                    Log.d(TAG, "><onCardClick(view=" + view + ", position=" + position + ", viewHolder=" + viewHolder + ")");
                    Intent intent = new Intent(view.getContext(), OrderDetailActivity.class);
                    intent.putExtra(OrderDetailActivity.ARG_ORDER_ID, viewHolder.getOrderId());
                    view.getContext().startActivity(intent);
                }
            });
            break;
        }
    }

    Log.d(TAG, "<<onCreateViewHolder(parent=" + parent + ", viewType=" + viewType + ")= " + result);
    return result;
}

@Override
public void onBindViewHolder(ViewHolder viewHolder, Cursor cursor) {
    Log.d(TAG, "><onBindViewHolder(viewHolder=" + viewHolder + ", cursor=" + cursor + ")");
    final OrderData orderData = new OrderData(cursor);
    viewHolder.initFromData(orderData);
}
}

Answer 5

回答by Shayan_Aryan

Thanks to @marmor, I updated my answer.

感谢@marmor，我更新了我的答案。

I think it's a good solution to handle the onClick() in the ViewHolderclass constructor and pass it to the parent class via OnItemClickListenerinterface.

我认为在ViewHolder类构造函数中处理 onClick()并通过OnItemClickListener接口将其传递给父类是一个很好的解决方案。

MyAdapter.java

我的适配器

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder>{

private LayoutInflater layoutInflater;
private List<MyObject> items;
private AdapterView.OnItemClickListener onItemClickListener;

public MyAdapter(Context context, AdapterView.OnItemClickListener onItemClickListener, List<MyObject> items) {
    layoutInflater = LayoutInflater.from(context);
    this.items = items;
    this.onItemClickListener = onItemClickListener;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = layoutInflater.inflate(R.layout.my_row_layout, parent, false);
    return new ViewHolder(view);
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    MyObject item = items.get(position);
}

public MyObject getItem(int position) {
    return items.get(position);
}


class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
    private TextView title;
    private ImageView avatar;

    public ViewHolder(View itemView) {
        super(itemView);
        title = itemView.findViewById(R.id.title);
        avatar = itemView.findViewById(R.id.avatar);

        title.setOnClickListener(this);
        avatar.setOnClickListener(this);
        itemView.setOnClickListener(this);
    }

    @Override
    public void onClick(View view) {
        //passing the clicked position to the parent class
        onItemClickListener.onItemClick(null, view, getAdapterPosition(), view.getId());
    }
}
}

Usage of adapter in other classes:

适配器在其他类中的使用：

MyFragment.java

我的片段

public class MyFragment extends Fragment implements AdapterView.OnItemClickListener {

private RecyclerView recycleview;
private MyAdapter adapter;

    .
    .
    .

private void init(Context context) {
    //passing this fragment as OnItemClickListener to the adapter
    adapter = new MyAdapter(context, this, items);
    recycleview.setAdapter(adapter);
}

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    //you can get the clicked item from the adapter using its position
    MyObject item = adapter.getItem(position);

    //you can also find out which view was clicked
    switch (view.getId()) {
        case R.id.title:
            //title view was clicked
            break;
        case R.id.avatar:
            //avatar view was clicked
            break;
        default:
            //the whole row was clicked
    }
}

}

Answer 6

回答by tmac12

I use this method to start an Intent from RecyclerView:

我使用此方法从 RecyclerView 启动 Intent：

@Override
 public void onBindViewHolder(ViewHolder viewHolder, int i) {

    final MyClass myClass = mList.get(i);
    viewHolder.txtViewTitle.setText(myclass.name);
   ...
    viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
      @Override
       public void onClick(View v){
             Intent detailIntent = new Intent(mContext, type.class);                                                            
             detailIntent.putExtra("MyClass", myclass);
             mContext.startActivity(detailIntent);
       }
}
);

Answer 7

回答by Tomasz Mularczyk

As far as I understand MLProgrammer-CiManswer, simply it's possible to just do this:

据我了解MLProgrammer-CiM答案，只是可以这样做：

class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
    private ImageView image;
    private TextView title;
    private TextView price;

    public MyViewHolder(View itemView) {
        super(itemView);
        image = (ImageView)itemView.findViewById(R.id.horizontal_list_image);
        title = (TextView)itemView.findViewById(R.id.horizontal_list_title);
        price = (TextView)itemView.findViewById(R.id.horizontal_list_price);
        image.setOnClickListener(this);
        title.setOnClickListener(this);
        price.setOnClickListener(this);
    }


    @Override
    public void onClick(View v) {
        Toast.makeText(context, "Item click nr: "+getLayoutPosition(), Toast.LENGTH_SHORT).show();
    }
}

Answer 8

回答by Guruprasad

Android Recyclerview With onItemClickListener, Why we cant try this is working like ListViewonly.

Android Recyclerview With onItemClickListener，为什么我们不能尝试这只是工作ListView。

Source : Link

来源：链接

public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {

private OnItemClickListener mListener;
public interface OnItemClickListener {
    public void onItemClick(View view, int position);
}
GestureDetector mGestureDetector;
public RecyclerItemClickListener(Context context, OnItemClickListener listener) {
    mListener = listener;
    mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            return true;
        }
    });
}
@Override
public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) {
    View childView = view.findChildViewUnder(e.getX(), e.getY());
    if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
        mListener.onItemClick(childView, view.getChildAdapterPosition(childView));
    }
    return false;
}

@Override
public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) {
}

@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {

  }
}

And Set this to RecyclerView:

并将其设置为 RecyclerView：

    recyclerView = (RecyclerView)rootView. findViewById(R.id.recyclerView);
    RecyclerView.LayoutManager mLayoutManager = new            LinearLayoutManager(getActivity());
    recyclerView.setLayoutManager(mLayoutManager);
    recyclerView.addOnItemTouchListener(
            new RecyclerItemClickListener(getActivity(), new   RecyclerItemClickListener.OnItemClickListener() {
                @Override
                public void onItemClick(View view, int position) {
                    // TODO Handle item click
                    Log.e("@@@@@",""+position);
                }
            })
    );

Answer 9

回答by chad

After reading @MLProgrammer-CiM's answer, here is my code:

阅读@MLProgrammer-CiM的回答后，这是我的代码：

class NormalViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{

    @Bind(R.id.card_item_normal)
    CardView cardView;

    public NormalViewHolder(View itemView) {
        super(itemView);
        ButterKnife.bind(this, itemView);
        cardView.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if(v instanceof CardView) {
            // use getAdapterPosition() instead of getLayoutPosition()
            int itemPosition = getAdapterPosition();
            removeItem(itemPosition);
        }
    }
}

Answer 10

回答by Manikanta

Instead of implementing interface View.OnClickListener inside view holder or creating and interface and implementing interface in your activity.. I used this code for simple on OnClickListener implementation.

而不是在视图持有者内部实现接口 View.OnClickListener 或在您的活动中创建和接口并实现接口..我使用这个代码来简单地实现 OnClickListener 。

public static class SimpleStringRecyclerViewAdapter
            extends RecyclerView.Adapter<SimpleStringRecyclerViewAdapter.ViewHolder> {

        // Your initializations goes here...
        private List<String> mValues;

        public static class ViewHolder extends RecyclerView.ViewHolder {

            //create a variable mView
            public final View mView;

            /*All your row widgets goes here
            public final ImageView mImageView;
            public final TextView mTextView;*/

            public ViewHolder(View view) {
                super(view);
                //Initialize it here
                mView = view;

                /* your row widgets initializations goes here
                mImageView = (ImageView) view.findViewById(R.id.avatar);
                mTextView = (TextView) view.findViewById(android.R.id.text1);*/
            }
        }

        public String getValueAt(int position) {
            return mValues.get(position);
        }

        public SimpleStringRecyclerViewAdapter(Context context, List<String> items) {

            mBackground = mTypedValue.resourceId;
            mValues = items;
        }

        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View view = LayoutInflater.from(parent.getContext())
                    .inflate(R.layout.list_item, parent, false);
            view.setBackgroundResource(mBackground);
            return new ViewHolder(view);
        }

        @Override
        public void onBindViewHolder(final ViewHolder holder, int position) {
            holder.mBoundString = mValues.get(position);
            holder.mTextView.setText(mValues.get(position));

            //Here it is simply write onItemClick listener here
            holder.mView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Context context = v.getContext();
                    Intent intent = new Intent(context, ExampleActivity.class);

                    context.startActivity(intent);
                }
            });
        }

        @Override
        public int getItemCount() {
            return mValues.size();
        }
    }

Java 为什么 RecyclerView 没有 onItemClickListener()？

提问by Tarun Varshney

Main Question

主要问题

Secondary Question

次要问题

采纳答案by MLProgrammer-CiM

回答by Tarun Varshney

回答by Abdulaziz Noor

回答by Wooff

回答by Shayan_Aryan

回答by tmac12

回答by Tomasz Mularczyk

回答by Guruprasad

回答by chad

回答by Manikanta

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Java 为什么 RecyclerView 没有 onItemClickListener()？

提问by Tarun Varshney

Main Question

主要问题

Secondary Question

次要问题

采纳答案by MLProgrammer-CiM

回答by Tarun Varshney

回答by Abdulaziz Noor

回答by Wooff

回答by Shayan_Aryan

回答by tmac12

回答by Tomasz Mularczyk

回答by Guruprasad

回答by chad

回答by Manikanta

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