onItemClick 不适用于卡片视图

Question

它使用 retrofit 2.0 从 web 服务中获取数据并将其绑定到卡片视图。当我单击具有图像和文本视图的卡片视图时，单击不会触发，而是在卡片视图的最角落边缘会触发一种奇怪的行为 onclick 正在触发。

Item_row.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    card_view:cardCornerRadius="1dp">

    <RelativeLayout

        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:padding="8dp"
        android:layout_margin="5dp"
        android:clickable="true">

        <ImageView
            android:id="@+id/flowerImage"
            android:layout_width="match_parent"
            android:layout_height="200dp"
            android:focusable="true"
            android:clickable="true"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_alignParentTop="true"
            android:visibility="visible"/>
        <ImageButton
            android:id="@+id/favIcon"
            android:layout_width="32dp"
            android:layout_height="32dp"
            android:scaleType="fitXY"
            android:layout_margin="5dp"
            android:layout_alignParentRight="true"
            android:layout_alignParentTop="true"
            android:descendantFocusability="blocksDescendants"
            android:background="@drawable/ic_favorite_border"
            android:focusable="true"
            android:clickable="true"
            />



        <LinearLayout

            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_below="@+id/flowerImage"

            android:orientation="vertical"
            >

            <TextView
                android:id="@+id/flowerName"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Medium Text"
                android:textColor="@color/colorPrimary"
                android:textAppearance="?android:attr/textAppearanceMedium"
                android:focusable="true"
                android:clickable="true"
                android:visibility="visible"/>

            <TextView
                android:id="@+id/flowerCategory"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Small Text"
                android:layout_alignBottom="@id/flowerName"
                android:textAppearance="?android:attr/textAppearanceSmall"
                android:focusable="true"
                android:clickable="true"
                android:visibility="visible"/>

            <TextView
                android:id="@+id/flowerPrice"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignBottom="@id/flowerCategory"
                android:text="New Text"
                android:focusable="true"
                android:clickable="true"
                android:visibility="visible"/>

            <TextView
                android:id="@+id/flowerInstruction"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:visibility="gone"
                android:text="New Text"
                android:focusable="true"
                android:clickable="true"/>

        </LinearLayout>


    </RelativeLayout>


</android.support.v7.widget.CardView>

Content_main.xml 布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:layout_margin="8dp"
    tools:context=".MainActivity">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.v4.widget.SwipeRefreshLayout
            android:id="@+id/swipe"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <android.support.v7.widget.RecyclerView
                android:id="@+id/list"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:scrollbars="vertical"/>


        </android.support.v4.widget.SwipeRefreshLayout>


</RelativeLayout>



</LinearLayout>

主要Activity布局文件 activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context=".MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay"
            android:elevation="8dp"/>

    </android.support.design.widget.AppBarLayout>

    <include layout="@layout/content_main" />

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        android:src="@android:drawable/ic_dialog_email" />

</android.support.design.widget.CoordinatorLayout>

代码库遵循 MVC 设计模式。控制器完成获取 Web 服务数据的工作

MainActivity.java

package com.innovation.myapp.jwelleryonrent.View;

import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.Toast;

import com.innovation.myapp.jwelleryonrent.R;
import com.innovation.myapp.jwelleryonrent.controller.jwelleryController;
import com.innovation.myapp.jwelleryonrent.model.adapter.CustomItemClickListner;
import com.innovation.myapp.jwelleryonrent.model.adapter.JwelleryAdapter;
import com.innovation.myapp.jwelleryonrent.model.pojo.JwelleryCollection;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements jwelleryController.JwelleryCallbackListener {
    private Toolbar mToolbar;
    private RecyclerView mRecyclerView;
    private SwipeRefreshLayout mSwipeRefreshLayout;
    private List<JwelleryCollection> mJwelleryList = new ArrayList<>();
    private JwelleryAdapter mJwelleryAdapter;
    private jwelleryController mController;
    private boolean isInFavourites = false;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        configToolbar();
        mController = new jwelleryController(MainActivity.this);
        configViews();



        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });




    }


    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState)
    {
        View rootView = inflater.inflate(R.layout.item_row, container, false);
        ImageButton imgBtn = (ImageButton) findViewById(R.id.favIcon);
        imgBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                addItemToBag(v);
            }
        });
        return rootView;
    }


    private void addItemToBag(View v)
    {
        isInFavourites = true;
        ImageButton btnFaviourite = (ImageButton) findViewById(R.id.favIcon);
        if(isInFavourites==true) {

            btnFaviourite.setImageResource(R.drawable.ic_favorite_white_24dp);
        }
        else
            btnFaviourite.setImageResource(R.drawable.ic_favorite_border);
        Snackbar.make(v, "Item added to Favourites", Snackbar.LENGTH_LONG)
                .setAction("Action", null).show();
    }


    private void configToolbar() {
        mToolbar = (Toolbar) this.findViewById(R.id.toolbar);
        setSupportActionBar(mToolbar);
    }

    private void initializeAdapter()
    {
        mJwelleryAdapter = new JwelleryAdapter(mJwelleryList, new CustomItemClickListner() {
            @Override
            public void onItemClick(View v, int position) {
                Toast.makeText(MainActivity.this, "Clicked Item: "+position,Toast.LENGTH_LONG).show();
            }
        });
        mRecyclerView.setAdapter(mJwelleryAdapter);

        mSwipeRefreshLayout.setColorSchemeColors(getResources().getColor(R.color.colorAccent),
                getResources().getColor(R.color.colorPrimary),
                getResources().getColor(R.color.colorPrimaryDark));

        mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                mController.startFetching();
            }
        });


    }


    private void configViews() {
        mRecyclerView = (RecyclerView) this.findViewById(R.id.list);
        mSwipeRefreshLayout = (SwipeRefreshLayout) this.findViewById(R.id.swipe);

        mRecyclerView.setHasFixedSize(true);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(MainActivity.this));
        mRecyclerView.setRecycledViewPool(new RecyclerView.RecycledViewPool());
        mController.startFetching();
        initializeAdapter();
//        mJwelleryAdapter= new JwelleryAdapter(mJwelleryList);

    }

        @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

        @Override
        public void onFetchStart() {

        }

        @Override
        public void onFetchProgress(JwelleryCollection jwellery) {
            mJwelleryAdapter.addJwellery(jwellery);
        }

        @Override
        public void onFetchProgress(List<JwelleryCollection> jwelleryList) {

        }

        @Override
        public void onFetchComplete() {
            mSwipeRefreshLayout.setRefreshing(false);
        }

        @Override
        public void onFetchFailure() {

        }
}

回收器视图使用适配器视图持有者模式来初始化适配器首饰适配器 class

package com.innovation.myapp.jwelleryonrent.model.adapter;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.innovation.myapp.jwelleryonrent.R;
import com.innovation.myapp.jwelleryonrent.View.MainActivity;
import com.innovation.myapp.jwelleryonrent.model.pojo.JwelleryCollection;
import com.innovation.myapp.jwelleryonrent.model.utilities.Constants;
import com.squareup.picasso.Picasso;

import java.util.List;

/**
 * 
 */
public class JwelleryAdapter extends RecyclerView.Adapter<JwelleryAdapter.Holder> {
    private List<JwelleryCollection> mJwelleryCollection;
    CustomItemClickListner  itemListner;
    Context mContext;

    public JwelleryAdapter(List<JwelleryCollection> jwellery) {
        mJwelleryCollection = jwellery;

    }
    public JwelleryAdapter(  List<JwelleryCollection> jwellery,CustomItemClickListner listner) {
        mJwelleryCollection = jwellery;
        this.itemListner = listner;

    }

    @Override
    public Holder onCreateViewHolder(ViewGroup parent, int viewType) {
        View row = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_row,parent,false);
        final Holder mViewHolder = new Holder(row);
        row.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                itemListner.onItemClick(v,mViewHolder.getPosition());
            }
        });
        return mViewHolder;
    }



    @Override
    public void onBindViewHolder(JwelleryAdapter.Holder holder, int position) {
        JwelleryCollection currentJwellery = mJwelleryCollection.get(position);
        holder.mName.setText(currentJwellery.mName);
        holder.mCategory.setText(currentJwellery.mCategory);
        holder.mPrice.setText(Double.toString(currentJwellery.mPrice));
        holder.mInstructions.setText(currentJwellery.mInstructions);

        Picasso.with(holder.itemView.getContext()).load(Constants.PHOTO_URL + currentJwellery.mPhoto).into(holder.mImage);


    }
    public void addJwellery(JwelleryCollection jwellery) {
        mJwelleryCollection.add(jwellery);
        notifyDataSetChanged();
    }
    @Override
    public int getItemCount() {
        return mJwelleryCollection.size();
    }
    public class Holder extends RecyclerView.ViewHolder implements View.OnClickListener {
        Context contxt;
        public TextView mName, mCategory, mPrice, mInstructions;
        public ImageView mImage;

        public Holder(View itemView) {
            super(itemView);
            mImage = (ImageView) itemView.findViewById(R.id.flowerImage);
            mName = (TextView) itemView.findViewById(R.id.flowerName);
            mCategory = (TextView) itemView.findViewById(R.id.flowerCategory);
            mPrice = (TextView) itemView.findViewById(R.id.flowerPrice);
            mInstructions = (TextView) itemView.findViewById(R.id.flowerInstruction);




        }


        public Holder(View itemView,int ViewType,Context c) {
        // Creating ViewHolder Constructor with View and viewType As a parameter
            super(itemView);
            contxt = c;
            itemView.setClickable(true);
            itemView.setOnClickListener(this);
        }
        @Override
        public void onClick(View v) {

        Toast.makeText(contxt, "The Item Clicked is: " + getPosition(), Toast.LENGTH_SHORT).show();
            }
        }


}

CustomerItemClickListner 接口处理点击时的行项目

package com.innovation.myapp.jwelleryonrent.model.adapter;

import android.view.View;

/**
 * 
 */
public interface CustomItemClickListner {
    public void onItemClick(View v,int position);
}

Answer 1

首先在适配器中创建一个接口变量：

CustomItemClickListener mListener;

然后就像您在 OnClick() 方法中设置的那样：

if (mListener != null) {
    mListener.onItemClick(v, getAdapterPosition());
}

您需要在适配器中修改的最后一件事是创建新方法，稍后您将在 activity class 中调用该方法来处理侦听器：

public void setOnItemClickListener(CustomItemClickListener listener) {
     mListener = listener;
}

现在您可以在 activity 中调用此方法，如下所示：

adapter.setOnItemClickListener(this); // implement interface

           // or

adapter.setOnItemClickListener(new CustomItemClickListener());

onItemClick 不适用于卡片视图

onItemClick not working for Card View

android

onitemclicklistener

onitemclick

android-cardview

android-recyclerview