有没有人使用RecyclerView找到一种方法将onClickListener设置为RecyclerView中的项目？我想为每个项目的每个布局设置一个监听器，但这似乎有点太麻烦我确定有一种方法让RecyclerView听onClick事件，但我无法弄明白。
由于API已发生根本变化，如果您要为每个项目创建一个OnClickListener，我不会感到惊讶。尽管如此，这并不是那么麻烦。在你的RecyclerView.Adapter<MyViewHolder>实现中，你应该：
private final OnClickListener mOnClickListener = new MyOnClickListener();
@Override
public MyViewHolder onCreateViewHolder(final ViewGroup parent, final int viewType) {
View view = LayoutInflater.from(mContext).inflate(R.layout.myview, parent, false);
view.setOnClickListener(mOnClickListener);
return new MyViewHolder(view);
}
onClick方法：
@Override
public void onClick(final View view) {
int itemPosition = mRecyclerView.getChildLayoutPosition(view);
String item = mList.get(itemPosition);
Toast.makeText(mContext, item, Toast.LENGTH_LONG).show();
}
这就是我做的。此解决方案支持RecyclerView项目和视图内的onClick和onLongClick内部RecyclerView项目（内部视图）。
我在我选择的视图上标记了viewHolder：
public RecyclerViewAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_item, null);
ViewHolder viewHolder = new ViewHolder(itemView);
itemView.setOnClickListener( this);
itemView.setOnLongClickListener(this);
viewHolder.imageIV.setOnClickListener(this);
viewHolder.imageIV.setOnLongClickListener(this);
viewHolder.imageIV.setTag(viewHolder);
itemView.setTag(viewHolder);
return viewHolder;
}
我使用holder.getPosition（）来检索onClick（）方法中的位置（onLongClick类似）：
public void onClick(View view) {
ViewHolder holder = (ViewHolder) view.getTag();
int position = holder.getPosition();
if (view.getId() == holder.imageIV.getId()){
Toast.makeText(context, "imageIV onClick at" + position, Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(context, "RecyclerView Item onClick at " + position, Toast.LENGTH_SHORT).show();
}
}
getChildPosition的变体也可以使用。请注意，对于内部视图，在onClick（）中使用：
int position = recyclerView.getChildPosition((View)view.getParent());
在我看来，这个解决方案的优势在于，当单击图像时，只调用onclick（）图像监听器，而当我将Jacob的解决方案与RecyclerView Item视图和我的内部视图解决方案相结合时，RecyclerView项目视图onclick（ ）也被称为（点击图像时）。
有更容易的方法来做到这一点。只需在根视图上单击onBindViewHolder即可。
考虑这是适配器的视图，
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/linearlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/textview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="1dp"
android:textSize="15sp" />
</LinearLayout>
然后在适配器中执行以下操作
//get the layout and make view holder
@Override
public RVAdapter.ViewHolder1 onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.adapter_layout, null);
ViewHolder1 viewHolder = new ViewHolder1(view);
return viewHolder;
}
@Override
public void onBindViewHolder(RVAdapter.ViewHolder1 holder, int position) {
//apply on click on your root view
holder.linearlayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Do on click stuff
}
});
}
//make references to views in layout including root view
public class ViewHolder1 extends RecyclerView.ViewHolder {
protected LinearLayout linearlayout = null
protected TextView textview = null;
public CareerLinksViewHolder(View itemView) {
super(itemView);
this.linearlayout = (LinearLayout) itemView.findViewById(R.id.linearlayout);
this.tvCompName = (TextView) itemView.findViewById(R.id.textview);
}
}
你可以将clickListener传递给Adapter。
在你的Activity：
private View.OnClickListener mItemClick = new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = null;
int position = list.getChildPosition(v);
switch (position) {
case 0:
intent = new Intent(MainActivity.this, LeakCanaryActivity.class);
break;
case 1:
intent = new Intent(MainActivity.this, ButterKnifeFragmentActivity.class);
break;
}
if (intent != null) {
MainActivity.this.startActivity(intent);
}
}
};
然后把它传递给Adapter：
MainAdapter mainAdapter = new MainAdapter(this, mItemClick);
在Adapter的onCreateViewHolder：
@Override
public MainAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int position) {
View itemView = activity.getLayoutInflater().inflate(R.layout.main_adapter_item, viewGroup, false);
ViewHolder holder = new ViewHolder(itemView);
itemView.setOnClickListener(mItemClick);
return holder;
}
我为android开发了一个轻量级库，你可以访问https://github.com/ChathuraHettiarachchi/RecycleClick
并按照以下示例进行操作
RecycleClick.addTo(YOUR_RECYCLEVIEW).setOnItemClickListener(new RecycleClick.OnItemClickListener() {
@Override
public void onItemClicked(RecyclerView recyclerView, int position, View v) {
// YOUR CODE
}
});
您可以将OnClickListener实现到ViewHolder类
public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public Item item
@InjectView(R.id.tv_title)
public TextView tvTitle;
@InjectView(R.id.rl_row)
public RelativeLayout rlRow;
public ViewHolder(View v) {
super(v);
ButterKnife.inject(this, v);
v.setOnClickListener(this);
}
@Override
public void onClick(View view) {
Log.e("item title",item.getTitle());
}
}
并且onBindViewHolder设置您的视图持有者的项目
public void onBindViewHolder(ViewHolder holder, int position) {
holder.tvTitle.setText(objects.get(position).getTitle());
holder.item = objects.get(position);
}
方式太简单有效。
而不是在视图持有者中实现接口View.OnClickListener或在您的活动中创建和接口以及实现接口 - 我在OnClickListener实现上使用了此代码。
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();
}
}
到目前为止发布的所有答案都是很好的解决方案，但是如果你不想处理太多的实现细节，并希望它与ListView的工作方式类似，我建议使用TwoWay-View，如下所示：
https://github.com/lucasr/twoway-view
请注意，此实现还支持长按项目，以及对压缩状态的支持（这对于此问题的其他解决方案缺乏重要性）。
如果您不想使用整个库，请查看ClickItemTouchListener类，如果需要，可以单独使用它。我目前发现的唯一问题是长按+滚动，似乎有不正确的行为。
如果你想在单个项目上捕获click事件，那么只需在OnClickListener类中实现ViewHolder，然后在单个视图或整个itemView上设置单击侦听器。
以下示例显示相同
public class ContactViewHolder extends RecyclerView.ViewHolder implements OnClickListener
{
TextView txt_title,txt_name,txt_email;
public ContactViewHolder(View itemView)
{
super(itemView);
txt_title = (TextView)itemView.findViewById(R.id.txt_title);
txt_name = (TextView)itemView.findViewById(R.id.txt_name);
txt_email = (TextView)itemView.findViewById(R.id.txt_email);
txt_name.setOnClickListener(this);
txt_email.setOnClickListener(this);
itemView.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(v == itemView)
{
Toast.makeText(RecyclerDemoActivity.this, "Visiting Card Clicked is ==>"+txt_name.getText(), Toast.LENGTH_SHORT).show();
}
if(v == txt_name)
{
Toast.makeText(RecyclerDemoActivity.this, "Name ==>"+txt_name.getText(), Toast.LENGTH_SHORT).show();
}
if(v == txt_email)
{
Toast.makeText(RecyclerDemoActivity.this, "Email ==>"+txt_email.getText(), Toast.LENGTH_SHORT).show();
}
}
}
}
对我来说，这是最好的方法：
class YourRecyclerAdapter extends RecyclerView.Adapter<ContactViewHolder> implements View.OnClickListener {
...
@Override
public void onClick(View view) {
int itemPosition = vRecycle.getChildPosition(view);
//And use itemPosition to get the item from your collection. This way you dont restrain the ViewHolder with a OnClick callback
}
...
}
RecyclerView没有OnClickListener，必须自己实施。
我想在OnItemClickListener中添加一个Adapter接口，当你点击onClick的项目视图时调用ViewHolder方法。因此，管理项目点击的责任在ViewHolder和Adapter之外。活动或片段将决定做什么
向侦听器和侦听器对象添加接口。
public class ItemsAdapter extends RecyclerView.Adapter<ItemsAdapter.ViewHolder> {
...
private static OnItemClickListener onItemClickListener;
...
public static interface OnItemClickListener {
public void onItemClick(View view, int position);
}
...
}
我们捕获项目根视图的单击，并在触发回调时onClick监听器调用适配器。
public class ItemsAdapter extends RecyclerView.Adapter<ItemsAdapter.ViewHolder> {
...
private static OnItemClickListener onItemClickListener;
...
public static interface OnItemClickListener {
public void onItemClick(View view, int position);
}
...
public static class ViewHolder extends RecyclerView.ViewHolder {
public ImageView imageView;
public ViewHolder(View itemRootView) {
super(itemRootView);
imageView = (ImageView) itemRootView.findViewById(R.id.itemImage);
itemRootView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int position = ViewHolder.super.getAdapterPosition();
onItemClickListener.onItemClick(view,position);
}
});
}
}
}
由于我们的案例中的活动或片段，片段，我们将一个监听器分配给适配器和onClick回调，我们将按位置获取所选项目并打开项目的详细活动。
public class ItemsFragment extends Fragment {
...
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
...
((ItemsAdapter) adapter).setOnItemClickListener(new ItemsAdapter.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
//Do something when an item has been clicked
}
});
...
}
...
}
这是为OnClickListener实现RecyclerView的更好且不太紧密耦合的方式。
使用片段：
RecyclerView recyclerView = findViewById(R.id.recycler);
recyclerView.addOnItemTouchListener(
new RecyclerItemClickListener(context, recyclerView ,new RecyclerItemClickListener.OnItemClickListener() {
@Override public void onItemClick(View view, int position) {
// do whatever
}
@Override public void onLongItemClick(View view, int position) {
// do whatever
}
})
);
RecyclerItemClickListener实施：
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {
private OnItemClickListener mListener;
public interface OnItemClickListener {
public void onItemClick(View view, int position);
public void onLongItemClick(View view, int position);
}
GestureDetector mGestureDetector;
public RecyclerItemClickListener(Context context, final RecyclerView recyclerView, OnItemClickListener listener) {
mListener = listener;
mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
@Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && mListener != null) {
mListener.onLongItemClick(child, recyclerView.getChildAdapterPosition(child));
}
}
});
}
@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 true;
}
return false;
}
@Override public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) { }
@Override
public void onRequestDisallowInterceptTouchEvent (boolean disallowIntercept){}
}
不幸的是RecyclerView缺少ListView内置的一些功能。例如，添加在单击项目时触发的OnItemClickListener的功能。 RecyclerView允许您在适配器中设置OnClickListener，但是从您的调用代码，适配器和ViewHolder传递该单击侦听器对于捕获简单的项目单击很复杂。
public class ItemClickSupport {
private final RecyclerView mRecyclerView;
private OnItemClickListener mOnItemClickListener;
private OnItemLongClickListener mOnItemLongClickListener;
private View.OnClickListener mOnClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mOnItemClickListener != null) {
RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v);
mOnItemClickListener.onItemClicked(mRecyclerView, holder.getAdapterPosition(), v);
}
}
};
private View.OnLongClickListener mOnLongClickListener = new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
if (mOnItemLongClickListener != null) {
RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v);
return mOnItemLongClickListener.onItemLongClicked(mRecyclerView, holder.getAdapterPosition(), v);
}
return false;
}
};
private RecyclerView.OnChildAttachStateChangeListener mAttachListener
= new RecyclerView.OnChildAttachStateChangeListener() {
@Override
public void onChildViewAttachedToWindow(View view) {
if (mOnItemClickListener != null) {
view.setOnClickListener(mOnClickListener);
}
if (mOnItemLongClickListener != null) {
view.setOnLongClickListener(mOnLongClickListener);
}
}
@Override
public void onChildViewDetachedFromWindow(View view) {
}
};
private ItemClickSupport(RecyclerView recyclerView) {
mRecyclerView = recyclerView;
mRecyclerView.setTag(R.id.item_click_support, this);
mRecyclerView.addOnChildAttachStateChangeListener(mAttachListener);
}
public static ItemClickSupport addTo(RecyclerView view) {
ItemClickSupport support = (ItemClickSupport) view.getTag(R.id.item_click_support);
if (support == null) {
support = new ItemClickSupport(view);
}
return support;
}
public static ItemClickSupport removeFrom(RecyclerView view) {
ItemClickSupport support = (ItemClickSupport) view.getTag(R.id.item_click_support);
if (support != null) {
support.detach(view);
}
return support;
}
public ItemClickSupport setOnItemClickListener(OnItemClickListener listener) {
mOnItemClickListener = listener;
return this;
}
public ItemClickSupport setOnItemLongClickListener(OnItemLongClickListener listener) {
mOnItemLongClickListener = listener;
return this;
}
private void detach(RecyclerView view) {
view.removeOnChildAttachStateChangeListener(mAttachListener);
view.setTag(R.id.item_click_support, null);
}
public interface OnItemClickListener {
void onItemClicked(RecyclerView recyclerView, int position, View v);
}
public interface OnItemLongClickListener {
boolean onItemLongClicked(RecyclerView recyclerView, int position, View v);
}
}
您还需要使用ids.xml定义R.id.item_click_support：
<?xml version="1.0" encoding="utf-8"?>
<resources>
<item name="item_click_support" type="id" />
</resources>
生成的代码单击侦听器现在看起来像这样：
ItemClickSupport.addTo(mRecyclerView).setOnItemClickListener(new ItemClickSupport.OnItemClickListener() {
@Override
public void onItemClicked(RecyclerView recyclerView, int position, View v) {
// do it
}
});
有关recyclerview点击的简要说明，请查看此littlerobots_blog
您可以在ViewHolder类中轻松定义setOnClickListener，如下所示：
public class ViewHolder extends RecyclerView.ViewHolder {
TextView product_name;
ViewHolder(View itemView) {
super(itemView);
product_name = (TextView) itemView.findViewById(R.id.product_name);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int itemPosition = getLayoutPosition();
Toast.makeText(getApplicationContext(), itemPosition + ":" + String.valueOf(product_name.getText()), Toast.LENGTH_SHORT).show();
}
});
}
}
这就是我做的Read more & download the gist here
在这里添加相同
custom item click listener.Java
public interface CustomItemClickListener {
public void onItemClick(View v, int position);
}
items list adapter.Java
public class ItemsListAdapter extends RecyclerView.Adapter<ItemsListAdapter.ViewHolder> {
ArrayList<ItemListSingleItem> data;
Context mContext;
CustomItemClickListener listener;
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View mView = LayoutInflater.from(parent.getContext()).inflate(R.layout.items_list_single_item, parent, false);
final ViewHolder mViewHolder = new ViewHolder(mView);
mView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
listener.onItemClick(v, mViewHolder.getAdapterPosition());
}
});
return mViewHolder;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.itemTitle.setText(Html.fromHtml(data.get(position).getTitle()));
if (!TextUtils.isEmpty(data.get(position).getThumbnailURL())) {
// I Love picasso library :) http://square.github.io/picasso/
Picasso.with(mContext).load(data.get(position).getThumbnailURL()).error(R.drawable.ic_no_image).
placeholder(R.drawable.ic_no_image).
transform(new RoundedCornersTransformation(5, 0)).
into(holder.thumbnailImage);
} else {
holder.thumbnailImage.setImageResource(R.drawable.ic_no_image);
}
}
@Override
public int getItemCount() {
return data.size();
}
public ItemsListAdapter(Context mContext, ArrayList<ItemsListSingleItem> data, CustomItemClickListener listener) {
this.data = data;
this.mContext = mContext;
this.listener = listener;
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView itemTitle;
public ImageView thumbnailImage;
ViewHolder(View v) {
super(v);
itemTitle = (TextView) v
.findViewById(R.id.post_title);
thumbnailImage = (ImageView) v.findViewById(R.id.post_thumb_image);
}
}
}
从上面的大部分答案中，他们似乎都将他们的onclicklistener设置为单独的项目。然而，即将提供的解决方案非常简单，但对许多人来说并不直观。许多人忘记了其他组件总是在父组件中，用于在List或Recycler视图中显示项目。此解决方案只是将单个onclick侦听器设置为此父视图并播放转弯。该解决方案还包括一种从列表或回收站视图传递所单击项目的位置的方法。这里，我们的主要根视图是来自android支持库的CardView。这是示例代码
public class ListAdapter extends RecyclerView.Adapter<ListAdapter.ViewHolder> {
public static final String LOG_TAG = ListAdapter.class.getSimpleName();
private Cursor mDataset;
private Context mContext;
private ViewHolder mViewHolder;
// Provide a suitable constructor (depends on the kind of dataset)
public ListAdapter(Context context, Cursor Dataset) {
mDataset = Dataset;
mContext = context;
}
// Create new views (invoked by the layout manager)
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.list_business_view, parent, false);
mViewHolder = new ViewHolder(v);
return mViewHolder;
}
public void setData(Cursor newdata) {
this.mDataset = newdata;
}
// Replace the contents of a view (invoked by the layout manager)
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
//Bind data to other items here. To save time, i have ommited that.
//here is where we attach a click listerner for an item in the recycler list rather than for each element of a given item.
holder.card.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(mContext, " Just cliked item at position " + itemPosition, Toast.LENGTH_LONG).show();
}
});
}
}
// Return the size of your dataset (invoked by the layout manager)
@Override
public int getItemCount() {
if (null != mDataset) {
return mDataset.getCount();
}
return 0;
}
// Provide a reference to the views for each data item
// Complex data items may need more than one view per item, and
// you provide access to all the views for a data item in a view holder
public static class ViewHolder extends RecyclerView.ViewHolder{
// each data item is just a string in this case
public final TextView mBusinesssName; // View for the business name
public final TextView mBusinessCategory; //View for the category name
public final ImageView businessImage; // View for the business category image Image
public final TextView mBusinessDistance; // View for the distance
public final CardView card;
public ViewHolder(View view) {
super(view);
mBusinesssName = (TextView) view.findViewById(R.id.list_item_name_textview);
mBusinessCategory = (TextView) view.findViewById(R.id.list_item_category_textview);
mBusinessDistance = (TextView) view.findViewById(R.id.list_item_dist_textview);
businessImage = (ImageView) view.findViewById(R.id.list_item_icon);
card = (CardView) view.findViewById(R.id.card_view);
}
}
}
Kotlin实施nhaarman's answer：
mRecyclerView.addOnItemTouchListener(object : RecyclerItemClickListener(this, mRecyclerView,object :RecyclerItemClickListener.OnItemClickListener{
override fun onItemClick(view: View, position: Int) {
}
override fun onLongItemClick(view: View?, position: Int) {
}
}){})
recycler item click listener.Java :
import android.content.Context
import android.support.v7.widget.RecyclerView
import android.view.GestureDetector
import android.view.MotionEvent
import android.view.View
open class RecyclerItemClickListener(context: Context, recyclerView: RecyclerView, private val mListener: OnItemClickListener?) : RecyclerView.OnItemTouchListener {
private var mGestureDetector: GestureDetector
interface OnItemClickListener {
fun onItemClick(view: View, position: Int)
fun onLongItemClick(view: View?, position: Int)
}
init {
mGestureDetector = GestureDetector(context, object : GestureDetector.SimpleOnGestureListener() {
override fun onSingleTapUp(e: MotionEvent): Boolean {
return true
}
override fun onLongPress(e: MotionEvent) {
val child = recyclerView.findChildViewUnder(e.x, e.y)
if (child != null && mListener != null) {
mListener.onLongItemClick(child, recyclerView.getChildAdapterPosition(child))
}
}
})
}
override fun onInterceptTouchEvent(view: RecyclerView, e: MotionEvent): Boolean {
val childView = view.findChildViewUnder(e.x, e.y)
if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
mListener.onItemClick(childView, view.getChildAdapterPosition(childView))
return true
}
return false
}
override fun onTouchEvent(view: RecyclerView, motionEvent: MotionEvent) {}
override fun onRequestDisallowInterceptTouchEvent(disallowIntercept: Boolean) {}
}
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView title, year, genre;
public MyViewHolder(View view) {
super(view);
title = (TextView) view.findViewById(R.id.title);
genre = (TextView) view.findViewById(R.id.genre);
year = (TextView) view.findViewById(R.id.year);
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(context, ""+getAdapterPosition(), Toast.LENGTH_SHORT).show();
}
});
}
}
这里是我的自定义适配器的完整代码，此代码将使用名为“list_item”的xml文件中定义的列表项来扩充行，它还将对具有相应位置的所有列表项行执行click事件。
public class MyCustomAdapter extends RecyclerView.Adapter`<`AdapterMyCustomAdapter.ViewHolder> {
public static class ViewHolder extends RecyclerView.ViewHolder implements OnClickListener {
public onItemClickListener mListener;
public ViewHolder(View v, onItemClickListener listener) {
super(v);
mListener =listener;
v.setOnClickListener(this);
}
@Override
public void onClick(View v) {
mListener.onRecyclerItemClick(v, getPosition());
}
public static interface onItemClickListener {
public void onRecyclerItemClick(View view , int position);
}
}
@Override
public int getItemCount() {
return 5;
}
@Override
public void onBindViewHolder(ViewHolder holder, int pos) {
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int position) {
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.list_item, parent, false);
/* here list_item is an xml file we want to inflate ...it is same as we do in case of listview for customization.*/
MyCustomAdapter.ViewHolder vh = new ViewHolder(v, new MyCustomAdapter.ViewHolder.onItemClickListener() {
@Override
public void onRecyclerItemClick(View view, int position) {
System.out.println("clicked on list item at position " +position);
}
});
return vh;
}
}
我知道有很多答案，但我想我也可以提供它的实现。 （详情可在another question I answered上找到）。
因此，要添加单击侦听器，您的内部ViewHolder类需要实现View.OnClickListener。这是因为你将OnClickListener设置为itemView构造函数的ViewHolder参数。让我告诉你我的意思：
public class ExampleClickViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView text1, text2;
ExampleClickViewHolder(View itemView) {
super(itemView);
// we do this because we want to check when an item has been clicked:
itemView.setOnClickListener(this);
// now, like before, we assign our View variables
title = (TextView) itemView.findViewById(R.id.text1);
subtitle = (TextView) itemView.findViewById(R.id.text2);
}
@Override
public void onClick(View v) {
// The user may not set a click listener for list items, in which case our listener
// will be null, so we need to check for this
if (mOnEntryClickListener != null) {
mOnEntryClickListener.onEntryClick(v, getLayoutPosition());
}
}
}
您需要添加的唯一其他内容是Adapter的自定义界面和setter方法：
private OnEntryClickListener mOnEntryClickListener;
public interface OnEntryClickListener {
void onEntryClick(View view, int position);
}
public void setOnEntryClickListener(OnEntryClickListener onEntryClickListener) {
mOnEntryClickListener = onEntryClickListener;
}
所以你的新点击支持Adapter已经完成了。
现在，让我们用它......
ExampleClickAdapter clickAdapter = new ExampleClickAdapter(yourObjects);
clickAdapter.setOnEntryClickListener(new ExampleClickAdapter.OnEntryClickListener() {
@Override
public void onEntryClick(View view, int position) {
// stuff that will happen when a list item is clicked
}
});
它基本上是你如何设置一个普通的Adapter，除了你使用你创建的setter方法来控制当你的用户点击特定列表项时你将做什么。
您还可以查看我在GitHub上的Gist上创建的一组示例：
https://gist.github.com/FarbodSalamat-Zadeh/7646564f48ee708c1582c013e1de4f07
这就是我重复使用OnClickListener的方法
public class TestAdapter extends RecyclerView.Adapter<TestAdapter.MyviewHolder>
implements View.OnClickListener
在ViewHoder中获取itemlayout的父级
public class MyviewHolder extends RecyclerView.ViewHolder {
LinearLayout linearLayout_item;
public MyviewHolder(View itemView) {
super(itemView);
linearLayout_item=itemView.findViewById(R.id.linearLayout_item);
}
}
在onBindViewHolder中将标记设置为位置
@Override
public void onBindViewHolder(MyviewHolder holder, int position) {
holder.linearLayout_item.setTag(position);
holder.linearLayout_item.setOnClickListener(this);
}
在Onclick
@Override
public void onClick(View v) {
int position = (int) v.getTag();
switch (v.getId()) {
case R.id.linearLayout_item:
// do some thing with position
break;
}
}
对我来说，干净的方法就是这个。
适配器构造函数
private class EnvironmentTypeRecyclerViewAdapter extends RecyclerView.Adapter<EnvironmentTypeRecyclerViewAdapter.ViewHolder>
{
private final EnvironmentTypeRecyclerViewAdapterListener mEnvironmentTypeRecyclerViewAdapterListener;
private List<Environment> mEnvironmentsData;
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener
{
public ViewHolder(View v)
{
super(v);
v.setOnClickListener(this);
}
@Override
public void onClick(View v)
{
Environment environment = mEnvironmentsData.get(getAdapterPosition());
if (mEnvironmentTypeRecyclerViewAdapterListener != null && environment != null) {
mEnvironmentTypeRecyclerViewAdapterListener.onListItemSelected(environment);
}
}
public EnvironmentTypeRecyclerViewAdapter(List<SmallCellEnvironment> environments, EnvironmentTypeRecyclerViewAdapterListener environmentTypeRecyclerViewAdapterListener)
{
mEnvironmentTypeRecyclerViewAdapterListener = environmentTypeRecyclerViewAdapterListener;
mEnvironmentsData = environments;
}
}
链接界面
private interface EnvironmentTypeRecyclerViewAdapterListener
{
void onListItemSelected(Environment environment);
}
我这样做，没有不适当的类，探测器等。我们的适配器内的简单代码。特别是比以前更好的longClick解决方案。
public class PasswordAdapter extends RecyclerView.Adapter<PasswordAdapter.ViewHolder> {
private static ClickListener clickListener;
public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener, View.OnLongClickListener {
TextView name;
public ViewHolder(View itemView) {
super(itemView);
itemView.setOnClickListener(this);
itemView.setOnLongClickListener(this);
name = (TextView) itemView.findViewById(R.id.card_name);
}
@Override
public void onClick(View v) {
clickListener.onItemClick(getAdapterPosition(), v);
}
@Override
public boolean onLongClick(View v) {
clickListener.onItemLongClick(getAdapterPosition(), v);
return false;
}
}
public void setOnItemClickListener(ClickListener clickListener) {
PasswordAdapter.clickListener = clickListener;
}
public interface ClickListener {
void onItemClick(int position, View v);
void onItemLongClick(int position, View v);
}
}
然后在片段或活动中，只需点击：
PasswordAdapter mAdapter = ...;
mAdapter.setOnItemClickListener(new PasswordAdapter.ClickListener() {
@Override
public void onItemClick(int position, View v) {
Log.d(TAG, "onItemClick position: " + position);
}
@Override
public void onItemLongClick(int position, View v) {
Log.d(TAG, "onItemLongClick pos = " + position);
}
});
在kotlin中使用构造函数实现
初始化您的Recyclerview构造函数，如下所示
class ListAdapter(
c: Context,
private var list: List<Project>,
private val itemClick: (Project) -> Unit
) : RecyclerView.Adapter<ListAdapter.ViewHolder>()
在onCreateViewHolder中使用itemClick返回
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int):ProjectViewHolder {
val view = inflater.inflate(R.layout.list_item, parent, false)
return ViewHolder(view, itemClick)
}
你的onBindViewHolder
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
holder.bindProject(list[position])
}
然后用viewHolder类创建bindProject函数。
class ViewHolder(
view: View,
private val itemClick: (Project) -> Unit
) : RecyclerView.ViewHolder(view) {
private val clientTextCount = 7
val titleTextView: TextView = view.projectTitleTextView
fun bindProject(project: Project) {
with(project) {
titleTextView.text = name
itemView.setOnClickListener { itemClick(this) }
}
}
}
最后在你的activity中使用lazy初始化适配器
private val adapter: ListAdapter by lazy {
ListAdapter(this, projectList, {
// Here you can implement your onClick function.
})
}
用于向您的适配器中的recyclerview初始化以下方法添加新列表
fun setProjects(projects: List<Project>) {
projectList = projects
notifyDataSetChanged()
}
并在您的活动中的任何位置调用setProjects方法。
adapter.setProjects(projects)
而已。
查看类似的question @ CommonsWare对this的评论链接，它在OnClickListener中实现了viewHolder接口。
这是一个简单的ViewHolder示例：
TextView textView;//declare global with in adapter class
public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private ViewHolder(View itemView) {
super(itemView);
itemView.setOnClickListener(this);
textView = (TextView)view.findViewById(android.R.id.text1);
}
@Override
public void onClick(View view) {
Toast.makeText(view.getContext(), "position = " + getLayoutPosition(), Toast.LENGTH_SHORT).show();
//go through each item if you have few items within recycler view
if(getLayoutPosition()==0){
//Do whatever you want here
}else if(getLayoutPosition()==1){
//Do whatever you want here
}else if(getLayoutPosition()==2){
}else if(getLayoutPosition()==3){
}else if(getLayoutPosition()==4){
}else if(getLayoutPosition()==5){
}
//or you can use For loop if you have long list of items. Use its length or size of the list as
for(int i = 0; i<exampleList.size(); i++){
}
}
}
然后Adapter看起来像这样：
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view =LayoutInflater.from(parent.getContext()).inflate(android.R.layout.simple_list_item_1, parent, false);
return new ViewHolder(view);
}
根据Jacob Tabak的回答（给他+1），我能够添加onLongClick监听器：
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {
public interface OnItemClickListener {
void onItemClick(View view, int position);
void onItemLongClick(View view, int position);
}
private OnItemClickListener mListener;
private GestureDetector mGestureDetector;
public RecyclerItemClickListener(Context context, final RecyclerView recyclerView, OnItemClickListener listener) {
mListener = listener;
mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
@Override
public void onLongPress(MotionEvent e) {
View childView = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (childView != null && mListener != null) {
mListener.onItemLongClick(childView, recyclerView.getChildAdapterPosition(childView));
}
}
});
}
@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) {
}
}
然后你可以像这样使用它：
recyclerView.addOnItemTouchListener(new RecyclerItemClickListener(getActivity(), recyclerView, new RecyclerItemClickListener.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
// ...
}
@Override
public void onItemLongClick(View view, int position) {
// ...
}
}));
这对我有用。将OnClickListener附加到onBindView。我真的不知道这是否会影响性能，但似乎只需很少的代码即可正常工作。
public void onBindViewHolder(ViewHolder holder, final int position) {
holder.view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(context, "Recycle Click" + position, Toast.LENGTH_SHORT).show();
}
});
}
对于我来说，这对于活动中的项目点击侦听器来说是如此困难，并且对于不会在项目单击侦听器上触发的项目的单个视图具有单击侦听器。在使用Jacob Tabak的答案后，如果项目内没有其他触摸操作，我会尊重他对项目点击的回答。
我有一个自定义的OnClickListener界面，它有项目点击事件，它保存点击项目的视图和来自适配器的项目位置。我在构造函数中呈现它的一个实例（或者它可以使用setter）并将其附加到视图持有者容器单击侦听器。
我还在适配器中有其他单击侦听器（可以在视图持有者中），它将处理来自容器的当前View单击。
public class MyRecyclerAdapter extends RecyclerView.Adapter<MyViewHolder> {
private ArrayList<String> mData;
private OnItemClickListener mOnItemClickListener;
public interface OnItemClickListener {
public void onItemClick(View view, int position);
}
public MyRecyclerAdapter(ArrayList<String> itemsData,
OnItemClickListener onItemClickListener) {
mOnItemClickListener = onItemClickListener;
this.mData = itemsData;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
View layoutView = LayoutInflater.from(mContext).inflate(
R.layout.list_item, parent, false);
MyViewHolder viewHolder = new MyViewHolder(layoutView);
return viewHolder;
}
@Override
public void onBindViewHolder(MyViewHolder viewHolder,
final int position) {
viewHolder.container.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mOnItemClickListener.onItemClick(v, position);
}
});
viewHilder.button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//do button click work here
}
});
}
@Override
public int getItemCount() {
return mData.size();
}}
在活动中，您需要通过传递OnItemClickListener的实例来初始化适配器
public class FeedActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.my_recycler_view);
.....
MyRecyclerAdapter adapter = new MyRecyclerAdapter(new ArrayList<String>(), new OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
///list item was clicked
}
});
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(mFeedsAdapter);
}
和我的ViewHolder
public class MyViewHolder extends RecyclerView.ViewHolder {
public Button button;
public View container;
public MyViewHolder(View itemLayoutView) {
super(itemLayoutView);
container = itemLayoutView;
button = (Button) itemLayoutView.findViewById(R.id.button);
}}
这是我最终需要的，以防有人发现它有用：
public static class ViewHolder extends RecyclerView.ViewHolder {
public ViewHolder(View item) {
super(item);
item.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Log.d("RecyclerView", "onClick：" + getAdapterPosition());
}
});
}
}
资料来源：http://blog.csdn.net/jwzhangjie/article/details/36868515
我有很好的解决方案，RecyclerView的onItemClickListener项目和子项目
步骤1-创建一个界面
public interface OnRecyclerViewItemClickListener
{
/**
* Called when any item with in recyclerview or any item with in item
* clicked
*
* @param position
* The position of the item
* @param id
* The id of the view which is clicked with in the item or
* -1 if the item itself clicked
*/
public void onRecyclerViewItemClicked(int position, int id);
}
步骤2-然后按照以下方式在适配器的onBindViewHolder方法中使用它
/**
* Custom created method for Setting the item click listener for the items and items with in items
* @param listener OnRecyclerViewItemClickListener
*/
public void setOnItemClickListener(OnRecyclerViewItemClickListener listener)
{
this.listener = listener;
}
@Override
public void onBindViewHolder(ViewHolder viewHolder, final int position)
{
// viewHolder.albumBg.setBackgroundResource(_itemData[position]
// .getImageUrl());
viewHolder.albumName.setText(arrayList.get(position).getName());
viewHolder.artistName.setText(arrayList.get(position).getArtistName());
String imgUrl = arrayList.get(position).getThumbImageUrl();
makeImageRequest(imgUrl, viewHolder);
viewHolder.parentView.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
listener.onRecyclerViewItemClicked(position, -1);
}
});
viewHolder.settingButton.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
listener.onRecyclerViewItemClicked(position, v.getId());
}
});
}
// class to hold a reference to each item of RecyclerView
public static class ViewHolder extends RecyclerView.ViewHolder
{
public TextView albumName, artistName;
public ImageView albumIcon, settingButton;
public LinearLayout parentView;
public ViewHolder(View itemLayoutView)
{
super(itemLayoutView);
// albumBg = (LinearLayout) itemLayoutView
// .findViewById(R.id.albumDlbg);
albumName = (TextView) itemLayoutView.findViewById(R.id.albumName);
artistName = (TextView) itemLayoutView
.findViewById(R.id.artistName);
albumIcon = (ImageView) itemLayoutView.findViewById(R.id.albumIcon);
parentView = (LinearLayout) itemLayoutView
.findViewById(R.id.albumDlbg);
settingButton = (ImageView) itemLayoutView
.findViewById(R.id.settingBtn);
}
}
步骤3-在您正在使用它的活动或片段中查找并设置回收站视图
recyclerView = (RecyclerView) rootview.findViewById(R.id.vmtopsongs);
lm = new LinearLayoutManager(mActivity);
lm.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(lm);
recyclerView.addItemDecoration(
new HorizontalDividerItemDecoration.Builder(getActivity())
.paint(Utils.getPaint()).build());
PopularSongsadapter mAdapter = new PopularSongsadapter(gallery,
mActivity, true);
// set adapter
recyclerView.setAdapter(mAdapter);
mAdapter.setOnItemClickListener(this);
// set item animator to DefaultAnimator
recyclerView.setItemAnimator(new DefaultItemAnimator());
步骤4-最后在您使用recyclerview的活动或片段中实现接口
@Override
public void onRecyclerViewItemClicked(int position, int id)
{
if(id==-1){
Toast.makeText(mActivity, "complete item clicked", Toast.LENGTH_LONG).show();
}else{
Toast.makeText(mActivity, "setting button clicked", Toast.LENGTH_LONG).show();
}
}