Android Recyclerview: Change Layout File List to Grid Onoptionitemselected

Android RecyclerView: Change layout file LIST to GRID onOptionItemSelected

I found solution with the starting of activity I have set LinearLayoutManager like:

mLayoutManager = new LinearLayoutManager(this);
mProductListRecyclerView.setLayoutManager(mLayoutManager);

after that onOptionsItemSelected written like:

case R.id.menu_product_change_view:
     isViewWithCatalog = !isViewWithCatalog;
     supportInvalidateOptionsMenu();
     //loading = false;
     mProductListRecyclerView.setLayoutManager(isViewWithCatalog ? new LinearLayoutManager(this) : new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL));
     mProductListRecyclerView.setAdapter(mAdapter);
     break;

and changing view in onCreateViewHolder like:

@Override
public ProductRowHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
    View v = LayoutInflater.from(viewGroup.getContext()).inflate(isViewWithCatalog ? R.layout.product_row_layout_list : R.layout.product_row_layout_grid, null);
    ProductRowHolder mh = new ProductRowHolder(v);
    return mh;
}

From Starting to Ending you have to manage isViewWithCatalog variable for displaying which layout first.

Switch between RecyclerView layouts when click on AlertDialog item list

No need to use multiple Recyclerview for this

You can achieve this using single Recyclerview with Multiple viewType

When you want to change the layout of Recyclerview just change the LayoutManager and viewType of your Recyclerview it will work

SAMPLE CODE

Try this way

First Create a Three layout for your Multiple viewType

grid_layout

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="150dp"
    android:layout_height="150dp"
    app:cardElevation="10dp"
    app:cardUseCompatPadding="true">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="150dp"
            android:adjustViewBounds="true"
            android:contentDescription="@string/app_name"
            android:scaleType="centerCrop"
            android:src="@drawable/dishu" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:background="#6a000000"
            android:gravity="center"
            android:padding="10dp"
            android:text="dummy text"
            android:textColor="@android:color/white" />
    </RelativeLayout>

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

cardlist_layout

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:cardElevation="10dp"
    app:cardUseCompatPadding="true">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:orientation="vertical">

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="150dp"
            android:adjustViewBounds="true"
            android:contentDescription="@string/app_name"
            android:scaleType="centerCrop"
            android:src="@drawable/dishu" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingStart="5dp"
            android:paddingEnd="10dp"
            android:text="Dummy Title"
            android:textColor="@android:color/black"
            android:textStyle="bold" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingStart="5dp"
            android:paddingEnd="10dp"
            android:text="Dummy Tex" />

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

title_layout

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:cardElevation="10dp"
    app:cardUseCompatPadding="true">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center">

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:orientation="vertical">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:paddingStart="5dp"
                android:paddingEnd="5dp"
                android:text="dummy text"
                android:textColor="@android:color/black"
                android:textStyle="bold" />

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="start"
                android:paddingStart="5dp"
                android:paddingEnd="5dp"
                android:text="I have three different layouts cardsListLayout , titleLayout , cardMagazineLayoutand there may be more in the future, which used as a views on onCreateViewHolder method." />
        </LinearLayout>

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="150dp"
            android:adjustViewBounds="true"
            android:contentDescription="@string/app_name"
            android:scaleType="centerCrop"
            android:src="@drawable/dishu" />

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

DataAdapter

package neel.com.recyclerviewdemo;
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class DataAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    public static final int ITEM_TYPE_GRID = 0;
    public static final int ITEM_TYPE_CARD_LIST = 1;
    public static final int ITEM_TYPE_TITLE_LIST = 2;
    private Context mContext;
    private int VIEW_TYPE = 0;

    public DataAdapter(Context mContext) {
        this.mContext = mContext;
    }

    public void setVIEW_TYPE(int viewType) {
        VIEW_TYPE = viewType;
        notifyDataSetChanged();
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = null;
        // check here the viewType and return RecyclerView.ViewHolder based on view type
        switch (VIEW_TYPE) {
            case ITEM_TYPE_GRID:
                // if VIEW_TYPE is Grid than return GridViewHolder
                view = LayoutInflater.from(mContext).inflate(R.layout.grid_layout, parent, false);
                return new GridViewHolder(view);
            case ITEM_TYPE_CARD_LIST:
                // if VIEW_TYPE is Card List than return CardListViewHolder
                view = LayoutInflater.from(mContext).inflate(R.layout.cardlist_layout, parent, false);
                return new CardListViewHolder(view);
            case ITEM_TYPE_TITLE_LIST:
                // if VIEW_TYPE is Title List than return TitleListViewHolder
                view = LayoutInflater.from(mContext).inflate(R.layout.title_layout, parent, false);
                return new TitleListViewHolder(view);
        }
        return new GridViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
        final int itemType = getItemViewType(position);
        // First check here the View Type
        // than set data based on View Type to your recyclerview item
        if (itemType == ITEM_TYPE_GRID) {
        if (holder instanceof CardViewHolder) {
            GridViewHolder viewHolder = (GridViewHolder) holder;
            // write here code for your grid list
      }
        } else if (itemType == ITEM_TYPE_CARD_LIST) {
       if (holder instanceof CardViewHolder) {
            CardListViewHolder buttonViewHolder = (CardListViewHolder) holder;
            // write here code for your grid list
       }
        } else if (itemType == ITEM_TYPE_TITLE_LIST) {
            if (holder instanceof CardViewHolder) {
            TitleListViewHolder buttonViewHolder = (TitleListViewHolder) holder;
            // write here code for your TitleListViewHolder
          }
        }
    }

    @Override
    public int getItemCount() {
        return 40;
    }

    // RecyclerView.ViewHolder class for gridLayoutManager
    public class GridViewHolder extends RecyclerView.ViewHolder {

        public GridViewHolder(@NonNull View itemView) {
            super(itemView);
        }
    }

    // RecyclerView.ViewHolder class for Card list View
    public class CardListViewHolder extends RecyclerView.ViewHolder {

        public CardListViewHolder(@NonNull View itemView) {
            super(itemView);
        }
    }

    // RecyclerView.ViewHolder class for Title list View
    public class TitleListViewHolder extends RecyclerView.ViewHolder {

        public TitleListViewHolder(@NonNull View itemView) {
            super(itemView);
        }
    }
}

MainActivity

package neel.com.recyclerviewdemo;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;

public class MainActivity extends AppCompatActivity {

    DataAdapter dataAdapter;
    private RecyclerView myRecyclerView;
    private LinearLayoutManager linearLayoutManager;
    private GridLayoutManager gridLayoutManager;

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

        myRecyclerView = findViewById(R.id.myRecyclerView);
        myRecyclerView.setHasFixedSize(true);

        linearLayoutManager = new LinearLayoutManager(this);
        gridLayoutManager = new GridLayoutManager(this, 3);

        myRecyclerView.setLayoutManager(gridLayoutManager);

        dataAdapter = new DataAdapter(this);
        myRecyclerView.setAdapter(dataAdapter);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.home_menu, menu);
        // return true so that the menu pop up is opened
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        if (item.getItemId() == R.id.action_dialog) {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle("Please choose a layout");

            String[] layouts = {"Title Layout", "Cards List", "Grid View"};
            builder.setItems(layouts, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int index) {
                    switch (index) {
                        case 0: // Title layout
                            dataAdapter.setVIEW_TYPE(2);
                            myRecyclerView.setLayoutManager(linearLayoutManager);
                            myRecyclerView.setAdapter(dataAdapter);
                            break;
                        case 1: // Cards List
                            dataAdapter.setVIEW_TYPE(1);
                            myRecyclerView.setLayoutManager(linearLayoutManager);
                            myRecyclerView.setAdapter(dataAdapter);
                            break;
                        case 2: // Grid  Layout
                            dataAdapter.setVIEW_TYPE(0);
                            myRecyclerView.setLayoutManager(gridLayoutManager);
                            myRecyclerView.setAdapter(dataAdapter);
                    }
                }
            });

            builder.show();
        }
        return super.onOptionsItemSelected(item);
    }
}

activity_main layout

<?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"
    tools:context=".MainActivity">

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

OUTPUT

https://youtu.be/L3slKTy2bzI

Recyclerview keep scrolling position after changing layout

You have to remember the firstVisibleItem and scroll to that position after changing the LayoutManager it works fine I just tried it out by myself:

E.g. Button click to change LayoutManager:

btn.setOnClickListener(new View.OnClickListener() {
           @Override
           public void onClick(View v) {
               int i = ((LinearLayoutManager) rcView.getLayoutManager()).findFirstVisibleItemPosition();
               if(rcView.getLayoutManager() instanceof GridLayoutManager) {                  
                   rcView.setLayoutManager(new LinearLayoutManager(MainActivity.this));
               } else {                     
                   rcView.setLayoutManager(new GridLayoutManager(MainActivity.this, 3));   
               }
               rcView.scrollToPosition(i);
           }
       });

RecyclerView: how to clear cached/recycled views?

Ok now I understand. You use both layouts? There is a method to return the viewtype for a list/grid element (id/position). You have too implement this method correctly that the adapter can recycle the correct layout for the new view.
Do you understand what I mean? :)

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