Question

My RecyclerVIew in Fragment

我的活动容器：

我的片段：

<android.support.design.widget.AppBarLayout>

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

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

<android.support.v7.widget.RecyclerView
    android:id="@+id/recycler_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginTop="?actionBarSize"
    android:clipToPadding="false"
    android:paddingBottom="8dp"
    android:paddingLeft="8dp" />

我的CardView：

<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/card"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginRight="8dp"
    android:layout_marginTop="8dp"
    android:clickable="true"
    android:foreground="?android:attr/selectableItemBackground"
    app:cardCornerRadius="2dp"
    app:cardElevation="2dp">

    ...

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

OnClickListener：

holder.card.setOnClickListener(new View.OnClickListener() {
    @Override public void onClick(View v) {
        Log.d("click","click");
    }
});

为什么cardview无法点击？我做错了什么？

Answer 1

RecyclerView与ListView有很大不同。这意味着必须以不同方式设置OnClickListener！我就是这样做的。

第1步 - 创建一个可以重复使用的类：

public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {

   private GestureDetector mGestureDetector;
   private OnItemClickListener mListener;

   public interface OnItemClickListener {
      void onItemClick(View view, int position);
      void onItemLongClick(View view, int position);

   }

   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) {

    }
 }

现在您已经拥有了这个类，您只需将Click监听器附加到Fragment或Activity中的RecyclerView，就像这样：

mRecyclerView.addOnItemTouchListener(new RecyclerItemClickListener(this, mRecyclerView, new RecyclerItemClickListener
            .OnItemClickListener() {
        @Override
        public void onItemClick(View view, int position) {
            //handle click events here
        }

        @Override
        public void onItemLongClick(View view, int position) {
            //handle longClick if any
        }
    }));

我希望这会对你有所帮助，因为我觉得这与CardView无关！祝你好运！

RecyclerView中的CardView无法点击

1 个答案: