Develop Reference

Adding a toolbar causes recyclerview to have a whitespace at bottom (AppBarLayout)

I'm using AppBarLayout and CollapsingToolbarLayout with relativelayout(my hiding-on-scroll content) and Toolbar which includes layout(my pinned item). To show some items I'm using RecyclerView( GridLayoutManager on it) and items which are shown in RecyclerView are CardView(with linearlayout) items.
Problem is that whitespace appears at bottom of RecyclerView when i have my toolbar, and if i delete toolbar whitespace also dissappear. Problem looks like this on device, and it looks normal in editor.
I tried changing both,cardview and recyclerview height and width but nothing helped.
My xml code for cardview which is used for items in recyclerview:
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/white_background_rounded_corners"
android:layout_margin="5dp">
<LinearLayout
android:layout_width="156dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:background="#drawable/white_background"
android:gravity="center"
android:orientation="vertical">
<ImageView
android:id="#+id/ivCategory"
android:layout_width="156dp"
android:layout_height="100dp"
android:layout_marginTop="8dp"
android:background="#null"
android:clickable="true"
android:contentDescription="#string/category"
android:focusable="true"
android:scaleType="fitCenter"
android:src="#mipmap/android_icon" />
<TextView
android:id="#+id/tvCategoryName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:text="#string/text"
android:textColor="#color/mainColour"
android:textSize="20sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView
And this is my xml code for whole form(form where recyclerview is used):
<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:background="#color/GrayColour"
android:orientation="vertical"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_collapseMode="parallax">
<include
android:id="#+id/Header"
layout="#layout/header_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="53dp"/>
</RelativeLayout>
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_collapseMode="pin"
android:contentInsetLeft="0dp"
android:contentInsetStart="0dp"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
android:contentInsetRight="0dp"
android:contentInsetEnd="0dp"
app:contentInsetRight="0dp"
app:contentInsetEnd="0dp">
<include
android:id="#+id/TopBar"
layout="#layout/top_navigation_bar"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/Categories"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
tools:listitem="#layout/list_item"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
app:layout_constraintBottom_toBottomOf="parent"
/>
</android.support.design.widget.CoordinatorLayout>
Also here is my adapter for filling recyclerview with items:
public class Adapter extends FirestoreAdapter<Adapter.ViewHolder> {
private static final String TAG = "Adapter";
public CategoryAdapter(Query query) {
super(query);
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new Adapter.ViewHolder(LayoutInflater.from(parent.getContext())
.inflate(R.layout.list_item, parent, false));
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.bind(getSnapshot(position).toObject(Category.class));
}
public class ViewHolder extends RecyclerView.ViewHolder {
#BindView(R.id.ivCategory)
ImageView ivCategory;
#BindView(R.id.tvCategoryName)
TextView tvCategoryName;
public ViewHolder(View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
}
public void bind(final Category category) {
StorageReference storageReference = FirebaseStorage.getInstance().getReference();
StorageReference imageRef = storageReference.child(category.getImage());
Glide.with(ivCategory)
.load(imageRef)
.into(ivCategory);
tvCategoryName.setText(category.getName());
ivCategory.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d(TAG, "test");
SecondActivity.start(v.getContext(), category.getName());
}
});
}
}
}
Thank you

Recycler view is in black colour

ScreenShot of the screen from Tab(Marshmallow)
The recycler view with cardview items is showing in black. Also I cannot change background colour. But when running in android emulator it seems fine, the background is default in white color. What could i had done wrong
public class MainActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private RecyclerView.Adapter mRecycleAdapter;
private RecyclerView.LayoutManager mLayoutManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecyclerView = (RecyclerView)findViewById(R.id.recyclerviewss);
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(getApplicationContext());
mRecyclerView.setLayoutManager(mLayoutManager);
mRecyclerView.setItemAnimator(new DefaultItemAnimator());
mRecycleAdapter = new RentalAdapter(getApplicationContext(), 75);
mRecyclerView.setAdapter(mRecycleAdapter);
}
}
class RentalAdapter extends RecyclerView.Adapter<RentalAdapter.RentalAdapterHolder> {
private final LayoutInflater mLayoutInflater;
private Context mContext;
private int mListCount;
int lastPosition = -1;
RentalAdapter(Context context, int listCount) {
mLayoutInflater = LayoutInflater.from(context);
mContext = context;
mListCount = listCount;
}
#Override
public RentalAdapterHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = mLayoutInflater.inflate(R.layout.sampcard, parent, false);
RentalAdapter.RentalAdapterHolder rentalHolder = new RentalAdapterHolder(view);
return rentalHolder;
}
#Override
public void onBindViewHolder(final RentalAdapterHolder holder, int position) {
holder.mTextView.setText("sample");
}
#Override
public int getItemCount() {
return 75;
}
class RentalAdapterHolder extends RecyclerView.ViewHolder {
private TextView mTextView;
private ImageView mImageView;
public RentalAdapterHolder(View itemView) {
super(itemView);
mTextView = (TextView)itemView.findViewById(R.id.info_text);
}
}
}
sampcard.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.CardView
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="#+id/card_view"
android:layout_gravity="center"
android:layout_width="match_parent"
android:layout_height="50dp"
card_view:cardCornerRadius="4dp"
android:layout_marginBottom="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ASKDNAKJDHN"
android:id="#+id/info_text"/>
</android.support.v7.widget.CardView>
</LinearLayout>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/recyclerviewss"
/>
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_gravity="center"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.CardView
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="#+id/card_view"
android:layout_gravity="center"
card_view:background_color="#color/white"
android:layout_width="match_parent"
android:layout_height="50dp"
card_view:cardCornerRadius="4dp"
android:layout_marginBottom="10dp">
<TextView
android:layout_width="wrap_content"
android:gravity="left|center_vertical"
android:paddingLeft="20dp"
android:layout_height="match_parent"
android:text="ASKDNAKJDHN"
android:id="#+id/info_text"/>
</android.support.v7.widget.CardView>
</LinearLayout>
Try this code.

Just add a background attribute android:background="#android:color/white" to your sampcard.xml layout.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/white">
<android.support.v7.widget.CardView
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="#+id/card_view"
android:layout_gravity="center"
android:layout_width="match_parent"
android:layout_height="50dp"
card_view:cardCornerRadius="4dp"
android:layout_marginBottom="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ASKDNAKJDHN"
android:id="#+id/info_text"/>
</android.support.v7.widget.CardView>
</LinearLayout>

I encountered the same problem and got it resolved by applying Background color to the root view in XML file which in you case is Recycler view.
Add this in your Recycler View XML code :
android:background = "#ffffff"

RecyclerView not displaying last item but is calling onBindView

I am trying a list of items using RecyclerView , everything works fine but the last item is not being displayed! The length of the list is 2 and onBindView is called twice and the when I used Log to print the items it aslo prints the last item. So the list is fine but the RecyclerView is not displaying it.
This is my code RecyclerView Adapter:
public class ModuleList extends RecyclerView.Adapter<ModuleList.ViewHolder> {
private List<Module> moduleList;
public ModuleList(List<Module> moduleList){
this.moduleList = moduleList;
}
public ModuleList(){
this.moduleList = new ArrayList<>();
}
public List<Module> getModuleList() {
return moduleList;
}
public void setModuleList(List<Module> moduleList) {
this.moduleList = moduleList;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_modules,parent,false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
Module module = moduleList.get(position);
// function is called twice and the all items are logged works fine
Log.d("ALL",module.getModuleName());
Log.d("ALL", String.valueOf(module.getNumberOfLevels()));
holder.moduleName.setText(String.valueOf(module.getModuleName()));
holder.numberOfLevels.setText(String.valueOf(module.getNumberOfLevels()));
}
#Override
public int getItemCount() {
//size is 2
return moduleList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
public TextView moduleName;
public TextView numberOfLevels;
public ViewHolder(View itemView) {
super(itemView);
moduleName = (TextView) itemView.findViewById(R.id.list_module_name);
numberOfLevels = (TextView) itemView.findViewById(R.id.list_no_of_levels);
}
}
}
This is my xml where recyclerview is:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/all_modules_list"
android:scrollbars="vertical"
/>
</LinearLayout>
This is my xml where RecyclerView Fragment is displayed:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_screen"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:fitsSystemWindows="true"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/main_screen_container"
android:orientation="vertical"
>
<android.support.v7.widget.Toolbar
android:id="#+id/main_screen_toolbar"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
/>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/fragment_container">
</FrameLayout>
</LinearLayout>
<ListView
android:layout_width="240dp"
android:layout_height="match_parent"
android:id="#+id/navigation_items"
android:layout_gravity="start"
android:background="#android:color/white"
>
</ListView>
</android.support.v4.widget.DrawerLayout>
Edit:list_module.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/list_module_name"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/list_no_of_levels"
/>
</LinearLayout>

Hey can you try the solution below?
Change this in the list_module.xml
<?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="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/list_module_name"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/list_no_of_levels"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
I have replaced match_parent to wrap_content to parent layout.

CardView - mysterious gaps emerge when scrolling upwards

I finally managed to get the card view to look just like I want it.
I use a GridLayoutManager with two columns to display cards with a thumbnail. Everything nice and working so far.
Anyway, once I scroll up, everything blows up. Large gaps (the size of a card itself) emerge between each row, now I every second row will be an empty one. I do not understand how that would possibly happen. I don't have any problem while scrolling down, but even one inch back up and everything is in pieces (so to speak).
Maybe some can see what is wrong with the layout.
actvivity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical">
<android.support.v7.widget.Toolbar xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/my_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:elevation="4dp"
android:theme="#style/ThemeOverlay.AppCompat.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:titleTextColor="#android:color/primary_text_dark" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="16dp"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:paddingTop="16dp"
tools:context=".view.MainActivity">
<android.support.v7.widget.RecyclerView
android:id="#+id/series_recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:scrollbars="vertical"
/>
</RelativeLayout>
card.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/layout_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.CardView
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/card_view"
android:layout_width="160dp"
android:layout_height="270dp"
android:layout_gravity="center"
android:layout_margin="5dp"
android:elevation="3dp"
app:cardUseCompatPadding="true"
app:cardCornerRadius="0dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/thumbnail"
android:layout_width="match_parent"
android:layout_height="200dp"
android:background="?attr/selectableItemBackgroundBorderless"
android:clickable="true"
/>
<TextView
android:id="#+id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/thumbnail"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="10dp"
android:textColor="#color/colorSeriesTitle"
android:textSize="15dp" />
<TextView
android:id="#+id/rating"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/title"
android:paddingBottom="5dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:textSize="12dp" />
</RelativeLayout>
</android.support.v7.widget.CardView>
Adapter
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder>{
private List<Stuff> stuff;
private Callback callback;
private Context context;
public MyAdapter(Context context) {
this.context = context;
stuff = Collections.emptyList();
}
public MyAdapter(List<Stuff> stuff) {
this.stuff = stuff;
}
public void setStuff(List<Stuff> stuff) {
this.stuff = stuff;
}
public void setCallback(Callback callback) {
this.callback = callback;
}
public static class MyViewHolder extends RecyclerView.ViewHolder {
public Stuff stuff;
public View contentLayout;
public ImageView thumbnailImageView;
public TextView titleTextView;
public TextView ratingTextView;
public MyViewHolder(View itemView) {
super(itemView);
contentLayout = itemView.findViewById(R.id.layout_content);
thumbnailImageView = (ImageView) itemView.findViewById(R.id.thumbnail);
titleTextView = (TextView) itemView.findViewById(R.id.title);
ratingTextView = (TextView) itemView.findViewById(R.id.rating);
}
}
public interface Callback {
void onItemClick(Series series);
}
#Override
public SeriesViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
final View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.series_card, parent, false);
final MyViewHolderviewHolder = new MyViewHolder(itemView);
viewHolder.contentLayout.setOnClickListener(view -> {
if (callback != null) {
callback.onItemClick(viewHolder.series);
}
});
return viewHolder;
}
#Override
public void onBindViewHolder(MyViewHolderholder, int position) {
Stuff stuff = this.stuff.get(position);
holder.stuff = stuff;
holder.titleTextView.setText(stuff.getName())
holder.ratingTextView.setText(stuff.getStatus());
Picasso.with(context)
.load(stuff.getSomeImageURL())
.fit()
.centerCrop()
.into(holder.thumbnailImageView);
}
#Override
public int getItemCount() {
return stuff.size();
}

card.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/layout_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
Changing the layout_height to wrap_content fixed the problem.

Android RecyclerView Cards not showing`

I am new to Android. I have moved heaven and earth to get my app to show RecyclerView with Cards but am not able to,no matter what. Tried a lot of searching on Google and StackOverflow and also on a lot of recommended sites.
My code is as follows:
HomeActivity.java
public class HomeActivity extends AppCompatActivity {
...
private RecyclerView mRecyclerView;
protected void onCreate(Bundle savedInstanceState) {
...
mRecyclerView = (RecyclerView) findViewById(R.id.my_recycler_view);
TransactionRecyclerViewAdapter adapter=new TransactionRecyclerViewAdapter(this, getDataSet());
mRecyclerView.setAdapter(adapter);
mRecyclerView.setHasFixedSize(true);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
...
}
private ArrayList<FavoriteTransaction> getDataSet() {
ArrayList results = new ArrayList<FavoriteTransaction>();
FavoriteTransaction favoriteTransaction1 = new FavoriteTransaction();
favoriteTransaction1.setAmount("11");
favoriteTransaction1.setBody("11 ka recharge");
results.add(favoriteTransaction1);
FavoriteTransaction favoriteTransaction2 = new FavoriteTransaction();
favoriteTransaction2.setAmount("12");
favoriteTransaction2.setBody("12 ka recharge");
results.add(favoriteTransaction2);
FavoriteTransaction favoriteTransaction3 = new FavoriteTransaction();
favoriteTransaction3.setAmount("13");
favoriteTransaction3.setBody("13 ka recharge");
results.add(favoriteTransaction3);
FavoriteTransaction favoriteTransaction4 = new FavoriteTransaction();
favoriteTransaction4.setAmount("14");
favoriteTransaction4.setBody("14 ka recharge");
results.add(favoriteTransaction4);
FavoriteTransaction favoriteTransaction5 = new FavoriteTransaction();
favoriteTransaction5.setAmount("15");
favoriteTransaction5.setBody("15 ka recharge");
results.add(favoriteTransaction5);
return results;
}
}
activity_home.xml
<android.support.v4.widget.DrawerLayout
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:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorgray">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:id="#+id/container_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<include
android:id="#+id/toolbar"
layout="#layout/toolbar" />
</LinearLayout>
<include layout="#layout/content_home" />
</LinearLayout>
<android.support.design.widget.NavigationView
android:id="#+id/nvView"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#android:color/white"
app:menu="#menu/activity_home_drawer"
app:headerLayout="#layout/nav_header"/>
</android.support.v4.widget.DrawerLayout>
content_home.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
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"
xmlns:fab="http://schemas.android.com/apk/res-auto"
android:id="#+id/container_body"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1" >
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/scrollView"
android:paddingBottom="55dp">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="15dp">
<include
android:id="#+id/card_list_fav_transact"
layout="#layout/card_list_fav_transact"/>
</LinearLayout>
</ScrollView>
</FrameLayout>
card_list_fav_transact.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp">
<TextView
android:id="#+id/info_text_sp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="#string/hdr_lbl_fav"
android:layout_marginBottom="5dp"/>
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/my_recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:paddingBottom="16dp"
android:paddingTop="16dp"
android:scrollbars="vertical"
/>
</LinearLayout>
card_transaction_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:id="#+id/card_view"
android:layout_gravity="center"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorwhite">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorwhite">
<TextView
android:layout_width="50dp"
android:layout_height="50dp"
android:gravity="center"
android:text="190"
android:textColor="#color/colorPrimary"
android:id="#+id/tv_fav_amt"
android:background="#drawable/stl_tv_blue_circle"
android:textAppearance="?android:attr/textAppearanceMedium"/>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:gravity="center_vertical"
android:layout_toRightOf="#+id/tv_fav_amt"
android:layout_toEndOf="#+id/tv_fav_amt">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Body"
android:id="#+id/fav_body"
android:clickable="true"
android:background="#drawable/stl_btn_underline"/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="SubText"
android:id="#+id/fav_subtext"
android:clickable="true"
android:background="#drawable/stl_btn_underline"/>
</LinearLayout>
<Button
style="#style/Base.Widget.AppCompat.Button.Borderless"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Buy"
android:id="#+id/btn_tr_buy"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="10dp"
android:background="#drawable/stl_btn_blue"
android:textColor="#android:color/white"/>
</RelativeLayout>
</android.support.v7.widget.CardView>
TransactionRecyclerViewAdapter.java
public class TransactionRecyclerViewAdapter extends RecyclerView.Adapter<TransactionViewHolder> {
private ArrayList<FavoriteTransaction> transactionList;
private Context context;
private LayoutInflater inflater;
public TransactionRecyclerViewAdapter(Context context, ArrayList<FavoriteTransaction> myDataset) {
this.transactionList = new ArrayList<>(myDataset);
this.context = context;
this.inflater = LayoutInflater.from(context);
}
#Override
public int getItemCount() {
return this.transactionList.size();
}
#Override
public void onBindViewHolder(TransactionViewHolder contactViewHolder, int i) {
FavoriteTransaction favTransaction = transactionList.get(i);
contactViewHolder.tvAmount.setText(favTransaction.getAmount());
}
#Override
public TransactionViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v=inflater.inflate(R.layout.card_transaction_row, parent, false);
TransactionViewHolder viewHolder=new TransactionViewHolder(v);
return viewHolder;
}
}
TransactionViewHolder.java
public class TransactionViewHolder extends RecyclerView.ViewHolder {
TextView tvAmount, tvBody, tvSubText;
public TransactionViewHolder(View itemView) {
super(itemView);
tvAmount = (TextView) itemView.findViewById(R.id.tv_fav_amt);
tvBody = (TextView) itemView.findViewById(R.id.fav_body);
tvSubText = (TextView) itemView.findViewById(R.id.fav_subtext);
}
}
FavoriteTransaction.java
public class FavoriteTransaction {
private int transactionId;
private String amount;
private String subText, body;
public int getTransactionId() {
return transactionId;
}
public void setTransactionId(int transactionId) {
this.transactionId = transactionId;
}
public String getAmount() {
return amount;
}
public void setAmount(String amount) {
this.amount = amount;
}
public String getBody() {
return body;
}
public void setBody(String body) {
this.body = body;
}
public String getSubText() {
return subText;
}
public void setSubText(String subText) {
this.subText = subText;
}
}
When I execute my app, I am not able to see the recycler with the cards. Can someone help me where I am going wrong. Just point me in the right direction.
Thanks in advance.

You wrote findViewById to the Activity class. However RecyclerView is not in your activity_home.xml, it is in nested layout.
Try defining the included layout and apply findViewById on that view, or simply define RecyclerView in your activity_home.xml
Why So?
Activity.findViewById(int id) method finds the id inside that particular Activity's layout. If you have nested layout, for example, like this activity_home.xml
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
<include
android:id="#+id/view_card_list_fav_transact"
layout="#layout/card_list_fav_transact"/>
</android.support.v4.widget.DrawerLayout>
and your card_list_fav_transact.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp">
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/my_recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:paddingBottom="16dp"
android:paddingTop="16dp"
android:scrollbars="vertical"/>
</LinearLayout>
Code inside your Activity will be
View includedView = findViewById(R.id.view_card_list_favt_transact);
RecyclerView rv = includedView.findViewById(R.id.my_recycler_view);
And you are all set!