Встроиваем RecyclerView в CardView

    public class MyLinearLayoutManager extends LinearLayoutManager {          public MyLinearLayoutManager(Context context, int orientation, boolean reverseLayout) {             super(context, orientation, reverseLayout);         }          public MyLinearLayoutManager(Context context) {             super(context);         }          private int[] mMeasuredDimension = new int[2];         @Override         public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state,                               int widthSpec, int heightSpec) {             final int widthMode = View.MeasureSpec.getMode(widthSpec);             final int heightMode = View.MeasureSpec.getMode(heightSpec);             final int widthSize = View.MeasureSpec.getSize(widthSpec);             final int heightSize = View.MeasureSpec.getSize(heightSpec);             int width = 0;             int height = 0;             for (int i = 0; i < getItemCount(); i++) {                  if (getOrientation() == HORIZONTAL) {                      measureScrapChild(recycler, i,                             View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),                             heightSpec,                             mMeasuredDimension);                      width = width + mMeasuredDimension[0];                     if (i == 0) {                         height = mMeasuredDimension[1];                     }                 } else {                     measureScrapChild(recycler, i,                             widthSpec,                             View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),                             mMeasuredDimension);                     height = height + mMeasuredDimension[1];                     if (i == 0) {                         width = mMeasuredDimension[0];                     }                 }             }             switch (widthMode) {                 case View.MeasureSpec.EXACTLY:                     width = widthSize;                 case View.MeasureSpec.AT_MOST:                 case View.MeasureSpec.UNSPECIFIED:             }              switch (heightMode) {                 case View.MeasureSpec.EXACTLY:                     height = heightSize;                 case View.MeasureSpec.AT_MOST:                 case View.MeasureSpec.UNSPECIFIED:             }              setMeasuredDimension(width, height);         }          private void measureScrapChild(RecyclerView.Recycler recycler, int position, int widthSpec,                                        int heightSpec, int[] measuredDimension) {             View view = recycler.getViewForPosition(position);             recycler.bindViewToPosition(view, position);             if (view != null) {                 RecyclerView.LayoutParams p = (RecyclerView.LayoutParams) view.getLayoutParams();                 int childWidthSpec = ViewGroup.getChildMeasureSpec(widthSpec,                         getPaddingLeft() + getPaddingRight(), p.width);                 int childHeightSpec = ViewGroup.getChildMeasureSpec(heightSpec,                         getPaddingTop() + getPaddingBottom(), p.height);                 view.measure(childWidthSpec, childHeightSpec);                 measuredDimension[0] = view.getMeasuredWidth() + p.leftMargin + p.rightMargin;                 measuredDimension[1] = view.getMeasuredHeight() + p.bottomMargin + p.topMargin;                 recycler.recycleView(view);             }         }     } 

public class PlusOneFragment extends Fragment { ...     @Override     public View onCreateView(LayoutInflater inflater, ViewGroup container,                              Bundle savedInstanceState) {         // Inflate the layout for this fragment         View view = inflater.inflate(R.layout.fragment_plus_one, container, false);          List<Record> records = new ArrayList<Record>();         populateRecords(records);          recyclerView = (RecyclerView)view.findViewById(R.id.recyclerView);         //recyclerView.setHasFixedSize(false);         adapter = new RecyclerViewAdapter(records);         LinearLayoutManager layoutManager = new MyLinearLayoutManager(getActivity());         RecyclerView.ItemAnimator itemAnimator = new DefaultItemAnimator();          recyclerView.setAdapter(adapter);         recyclerView.setLayoutManager(layoutManager);         recyclerView.setItemAnimator(itemAnimator);          cardView = (CardView)view.findViewById(R.id.cardView);          return view;     } 

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     xmlns:card_view="http://schemas.android.com/apk/res-auto"     android:layout_width="match_parent"     android:layout_height="wrap_content"     tools:context=".PlusOneFragment">      <android.support.v7.widget.CardView         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:id="@+id/cardView"         card_view:cardCornerRadius="6dp"         card_view:cardBackgroundColor="#84ffff">              <android.support.v7.widget.RecyclerView                 android:layout_width="400dp"                 android:layout_height="wrap_content"                 android:id="@+id/recyclerView" />     </android.support.v7.widget.CardView> </FrameLayout> 

        Fragment newFragment = PlusOneFragment.newInstance();         getSupportFragmentManager()                 .beginTransaction()                 .replace(R.id.container, newFragment)                 .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN)                 .addToBackStack(null)                 .commit(); 

package com.renal128.demo.recyclerviewdemo.adapter;  import android.support.v7.widget.RecyclerView; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.ImageView; import android.widget.TextView;  import com.renal128.demo.recyclerviewdemo.R; import com.renal128.demo.recyclerviewdemo.model.Record;  import java.util.List;  public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {      private List<Record> records;      public RecyclerViewAdapter(List<Record> records) {         this.records = records;     }      public List<Record> getRecords() {         return records;     }      @Override     public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {         View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.recyclerview_item, viewGroup, false);         return new ViewHolder(v);     }      @Override     public void onBindViewHolder(ViewHolder viewHolder, int i) {         Record record = records.get(i);         int iconResourceId = 0;         switch (record.getType()) {             case GREEN:                 iconResourceId = R.drawable.green_circle;                 break;             case RED:                 iconResourceId = R.drawable.red_circle;                 break;             case YELLOW:                 iconResourceId = R.drawable.yellow_circle;                 break;         }         viewHolder.icon.setImageResource(iconResourceId);         viewHolder.name.setText(record.getName());         viewHolder.deleteButtonListener.setRecord(record);         viewHolder.copyButtonListener.setRecord(record);     }      @Override     public int getItemCount() {         return records.size();     }      private void copy(Record record) {         int position = records.indexOf(record);         Record copy = record.copy();         records.add(position + 1, copy);         //notifyItemInserted(position + 1);         notifyDataSetChanged();     }      private void delete(Record record) {         int position = records.indexOf(record);         Log.i(">" , "position=" + position);         if( position != -1 ) {             records.remove(position);             //notifyItemRemoved(position);             notifyDataSetChanged();         }     }      class ViewHolder extends RecyclerView.ViewHolder {          private TextView name;         private ImageView icon;         private Button deleteButton;         private Button copyButton;         private DeleteButtonListener deleteButtonListener;         private CopyButtonListener copyButtonListener;          public ViewHolder(View itemView) {             super(itemView);             name = (TextView) itemView.findViewById(R.id.recyclerViewItemName);             icon = (ImageView) itemView.findViewById(R.id.recyclerViewItemIcon);             deleteButton = (Button) itemView.findViewById(R.id.recyclerViewItemDeleteButton);             copyButton = (Button) itemView.findViewById(R.id.recyclerViewItemCopyButton);             deleteButtonListener = new DeleteButtonListener();             copyButtonListener = new CopyButtonListener();             deleteButton.setOnClickListener(deleteButtonListener);             copyButton.setOnClickListener(copyButtonListener);         }     }      private class CopyButtonListener implements View.OnClickListener {         private Record record;          @Override         public void onClick(View v) {             copy(record);         }          public void setRecord(Record record) {             this.record = record;         }     }      private class DeleteButtonListener implements View.OnClickListener {         private Record record;          @Override         public void onClick(View v) {             delete(record);         }          public void setRecord(Record record) {             this.record = record;         }     } }