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在RecyclerView中，并沒有直接提供類似setOnItemClickListener( )和setOnItemLongClickListener ( )的方法，但是我們可以自己去添加

一、方式1：條目的布局文件中添加onClick屬性來實現

1、布局文件

(1)、MainActivity 布局文件

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

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>

(2)、RecyclerViewt條目的布局文件
在根標簽添加onClick屬性， android:onClick="myItemClick"

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:background="#ff33b5e5"
    android:onClick="myItemClick"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <TextView
        android:id="@+id/tv"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:gravity="center"
        tools:text="別看了，我就是一個TextView" />
</RelativeLayout>

2、Activity中

public class MainActivity extends AppCompatActivity {

    private RecyclerView mRecyclerView;
    private MainAdapter mAdapter;
    private List<String> mDatas;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        initData();
        mRecyclerView = (RecyclerView) findViewById(R.id.recyclerview);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));
        mRecyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.VERTICAL));
        mAdapter = new MainAdapter(this,mDatas);
        mRecyclerView.setAdapter(mAdapter);
    }

    /**
     * @param view    就是我們點擊的itemView
     */
    public void myItemClick(View view){
        // 獲取itemView的位置
        int position = mRecyclerView.getChildAdapterPosition(view);
        Toast.makeText(MainActivity.this, "點擊了 " + mDatas.get(position),
                                            Toast.LENGTH_SHORT).show();
    }

    private void initData() {
        mDatas = new ArrayList<>();
        for (int i = 'A'; i < 'Z'; i++) {
            mDatas.add("" + (char) i);
        }
    }
}

3、Adapter

public class MainAdapter extends RecyclerView.Adapter<MainAdapter.MyViewHolder> {

    private Context mContext;
    private List<String> mDatas;

    public MainAdapter(Context context, List<String> mDatas) {
        this.mContext = context;
        this.mDatas = mDatas;
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = View.inflate(mContext, R.layout.item_layout, null);
        return new MyViewHolder(view);
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        holder.tv.setText(mDatas.get(position));
    }

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

    class MyViewHolder extends RecyclerView.ViewHolder {
        TextView tv;

        public MyViewHolder(View view) {
            super(view);
            tv = (TextView) view.findViewById(R.id.tv);
        }
    }
}

4、效果圖及小結

這種方式處理item的點擊事件極其簡單，但是onClick屬性必須在包含該組件的Activity中去實現，在Fragment里面就不行了......當然，我們可以通過反射去實現，但是這就太麻煩了

二、方式2：通過在adapter中提供回調來實現item的點擊事件

1、Activity中

public class MainActivity extends AppCompatActivity {

    private RecyclerView mRecyclerView;
    private MainAdapter mAdapter;
    private List<String> mDatas;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        initData();
        mRecyclerView = (RecyclerView) findViewById(R.id.recyclerview);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));
        mRecyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.VERTICAL));
        mAdapter = new MainAdapter(this,mDatas);

        mAdapter.setOnItemClickLitener(new MainAdapter.OnItemClickLitener() {
            @Override
            public void onItemClick(View view, int position) {
                Toast.makeText(MainActivity.this,"這是條目"+mDatas.get(position),Toast.LENGTH_LONG).show();
            }
        });
        mRecyclerView.setAdapter(mAdapter);
    }

    private void initData() {
        mDatas = new ArrayList<>();
        for (int i = 'A'; i < 'Z'; i++) {
            mDatas.add("" + (char) i);
        }
    }
}

2、Adapter中

public class MainAdapter extends RecyclerView.Adapter<MainAdapter.MyViewHolder> {

    private Context mContext;
    private List<String> mDatas;
    private OnItemClickLitener   mOnItemClickLitener;

//設置回調接口
    public interface OnItemClickLitener{
        void onItemClick(View view, int position);
    }

    public void setOnItemClickLitener(OnItemClickLitener mOnItemClickLitener){
        this.mOnItemClickLitener = mOnItemClickLitener;
    }

    public MainAdapter(Context context, List<String> mDatas) {
        this.mContext = context;
        this.mDatas = mDatas;
    }


    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = View.inflate(mContext, R.layout.item_layout, null);
        return new MyViewHolder(view);
    }


    @Override
    public void onBindViewHolder(MyViewHolder holder, final int position) {
        holder.tv.setText(mDatas.get(position));

//通過為條目設置點擊事件觸發回調
        if (mOnItemClickLitener != null) {
            holder.itemLayout.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    mOnItemClickLitener.onItemClick(view, position);
                }
            });
        }
    }

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

    class MyViewHolder extends RecyclerView.ViewHolder {
        TextView tv;
        RelativeLayout itemLayout;

        public MyViewHolder(View view) {
            super(view);
            tv = (TextView) view.findViewById(R.id.tv);
            itemLayout = (RelativeLayout) view.findViewById(R.id.item_layout);
        }
    }
}

3、效果圖及小結

這種實現方式解決了方式一的缺陷，也是大多數人使用的方式.

三、方式3：通過RecyclerView.addOnItemTouchListener()去監聽

1、RecyclerView中有一個監聽觸摸事件方法，該方法需要一個OnItemTouchListener 對象，我們可以通過這個方法來處理item的點擊事件

public void addOnItemTouchListener(OnItemTouchListener listener) {
    mOnItemTouchListeners.add(listener);
}

2、接口OnItemTouchListener

public static interface OnItemTouchListener {

    public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e);

    public void onTouchEvent(RecyclerView rv, MotionEvent e);

    public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept);
}

了解Android事件分發機制的肯定對這幾個方法很熟悉，第一個方法是攔截觸摸事件的，第二個方法是處理觸摸事件的，第三個方法是處理觸摸沖突的。此接口官方提供了一個實現類SimpleOnItemTouchListener，不過沒有處理什么邏輯。

3、接口OnItemTouchListener 實現類SimpleOnItemTouchListener

 public static class SimpleOnItemTouchListener implements RecyclerView.OnItemTouchListener {
        @Override
        public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
            return false;
        }

        @Override
        public void onTouchEvent(RecyclerView rv, MotionEvent e) {
        }

       @Override
       public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
       }
    }

這里我們通過繼承SimpleOnItemTouchListener 來實現我們的點擊事件

4、繼承SimpleOnItemTouchListener

public abstract class MyItemClickListener extends RecyclerView.SimpleOnItemTouchListener {

    private GestureDetectorCompat mGestureDetectorCompat;
    private RecyclerView mRecyclerView;

    /**
     * 通過構造傳入我們的RecyclerView,并初始化GestureDetectorCompat
     */
    public MyItemClickListener(RecyclerView recyclerView) {
        this.mRecyclerView = recyclerView;
        mGestureDetectorCompat = new GestureDetectorCompat(
              mRecyclerView.getContext(),new MyGestureListener());
    }

    /**
     * 將事件交給GestureDetectorCompat處理
     *   并將MotionEvent 傳入GestureDetectorCompat使得可以獲取觸摸的坐標
     */
    @Override
    public void onTouchEvent(RecyclerView rv, MotionEvent e) {
        mGestureDetectorCompat.onTouchEvent(e);
    }

    /**
     * 不攔截觸摸事件,將事件交給GestureDetectorCompat處理
     */
    @Override
    public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
        mGestureDetectorCompat.onTouchEvent(e);
        return false;
    }

    @Override
    public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
    }

    /**
     * 定義一個抽象回調方法
     */
    public abstract void onItemClick(RecyclerView.ViewHolder vh);

    private class MyGestureListener extends GestureDetector.SimpleOnGestureListener{

        /**
         * 這個方法在簡單的點擊屏幕時執行
         *   如果要處理長按事件可以復寫onLongPress（）方法，方法內具體邏輯類似
         */
        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            View childView = mRecyclerView.findChildViewUnder(e.getX(), e.getY());
            if (childView != null) {
                RecyclerView.ViewHolder viewHolder = 
                        mRecyclerView.getChildViewHolder(childView);
                onItemClick(viewHolder);//觸發回調
            }
            return true;
        }
    }
}

5、Activity中

public class MainActivity extends AppCompatActivity {

    private RecyclerView mRecyclerView;
    private MainAdapter mAdapter;
    private List<String> mDatas;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        initData();
        mRecyclerView = (RecyclerView) findViewById(R.id.recyclerview);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));
        mRecyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.VERTICAL));
        mAdapter = new MainAdapter(this,mDatas);
        mRecyclerView.setAdapter(mAdapter);

        mRecyclerView.addOnItemTouchListener(new MyItemClickListener(mRecyclerView){
            @Override
            public void onItemClick(RecyclerView.ViewHolder viewHolder) {
                int position = viewHolder.getAdapterPosition();
                Toast.makeText(MainActivity.this, 
                         "addOnItemTouchListener點擊了" + mDatas.get(position), 
                         Toast.LENGTH_SHORT).show();
            }
        });
    }

    private void initData() {
        mDatas = new ArrayList<>();
        for (int i = 'A'; i < 'Z'; i++) {
            mDatas.add("" + (char) i);
        }
    }
}

6、效果及小結

這種實現方式在點擊時可以實時獲取點擊時的坐標，但是使用的人不多.

四、方式4：捕獲點擊和長按事件的輔助類

1、自定義的條目點擊事件支持類ItemClickSupport

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);
    }
}

需要在values目錄下定義一個ids.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <item name="item_click_support" type="id" />
</resources>

2、Activity中調用

ItemClickSupport.addTo(mRecyclerView).setOnItemClickListener(new ItemClickSupport.OnItemClickListener() {
    @Override 
    public void onItemClicked(RecyclerView recyclerView, int position, View v) {
        Toast.makeText(MainActivity.this,"這次點擊了"+mDatas.get(position),Toast.LENGTH_SHORT).show();
    }
});

使用起來是不是很簡單

五、總結

以上就是幾種處理RecyclerView條目點擊事件的方法，如果你有更好的方法，歡迎交流.

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RecyclerView系列之三：處理item的點擊事件

RecyclerView系列之三：處理item的點擊事件

一、方式1：條目的布局文件中添加onClick屬性來實現

1、布局文件

2、Activity中

3、Adapter

4、效果圖及小結

二、方式2：通過在adapter中提供回調來實現item的點擊事件

1、Activity中

2、Adapter中

3、效果圖及小結

三、方式3：通過RecyclerView.addOnItemTouchListener()去監聽

1、RecyclerView中有一個監聽觸摸事件方法，該方法需要一個OnItemTouchListener 對象，我們可以通過這個方法來處理item的點擊事件

2、接口OnItemTouchListener

3、接口OnItemTouchListener 實現類SimpleOnItemTouchListener

4、繼承SimpleOnItemTouchListener

5、Activity中

6、效果及小結

四、方式4：捕獲點擊和長按事件的輔助類

1、自定義的條目點擊事件支持類ItemClickSupport

2、Activity中調用

五、總結

推薦閱讀更多精彩內容

三个男躁一个女,国精产品一区一手机的秘密,麦子交换系列最经典十句话,欧美 国产 综合 欧美 视频

RecyclerView系列之三：處理item的點擊事件

一、方式1：條目的布局文件中添加onClick屬性來實現

1、布局文件

2、Activity中

3、Adapter

4、效果圖及小結

二、方式2：通過在adapter中提供回調來實現item的點擊事件

1、Activity中

2、Adapter中

3、效果圖及小結

三、方式3：通過RecyclerView.addOnItemTouchListener()去監聽

1、RecyclerView中有一個監聽觸摸事件方法，該方法需要一個OnItemTouchListener 對象，我們可以通過這個方法來處理item的點擊事件

2、接口OnItemTouchListener

3、接口OnItemTouchListener 實現類SimpleOnItemTouchListener

4、繼承SimpleOnItemTouchListener

5、Activity中

6、效果及小結

四、方式4：捕獲點擊和長按事件的輔助類

1、自定義的條目點擊事件支持類ItemClickSupport

2、Activity中調用

五、總結

推薦閱讀更多精彩內容

三个男躁一个女,国精产品一区一手机的秘密,麦子交换系列最经典十句话,欧美国产综合欧美视频