Develop Reference

CardView not showing inside fragment

I am a novice Java/Android studio student, just blindly following examples on the internet.
I wanted to make a CardView inside a fragment, but most of the examples out there were putting cardview inside an activity, so I searched and changed the appropriate codes. After some time tinkering, I managed to make it build without errors.
However, cardview is not showing up in RecyclerView.
I suspect it is a layout issue, but after all the changes with layout_height and layout_width, I can't get cardview to be seen.
Any help will be appreciated.
My code:
HomeFragment.java
public class HomeFragment extends Fragment implements View.OnClickListener {
final int ITEM_SIZE = 5;
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_home, container, false);
Button bh = v.findViewById(R.id.bh);
bh.setOnClickListener(this);
RecyclerView rv = (RecyclerView) v.findViewById(R.id.recyclerview);
LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
rv.setHasFixedSize(true);
rv.setLayoutManager(layoutManager);
List<Item> items = new ArrayList<>();
Item[] item = new Item[ITEM_SIZE];
item[0] = new Item(R.drawable.a, "#1");
item[1] = new Item(R.drawable.b, "#2");
item[2] = new Item(R.drawable.c, "#3");
item[3] = new Item(R.drawable.d, "#4");
item[4] = new Item(R.drawable.e, "#5");
RecyclerAdapter adaptor = new RecyclerAdapter(getActivity(), items, R.layout.fragment_home);
rv.setAdapter(adaptor);
return v;
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.bh:
((BottomNavigationView)getActivity().findViewById(R.id.nav_view)).setSelectedItemId(R.id.navigation_settings);
break;
}
}
}
RecyclerAdapter.java
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ViewHolder> {
Context context;
List<Item> items;
int item_layout;
public RecyclerAdapter(Context context, List<Item> items, int item_layout) {
this.context = context;
this.items = items;
this.item_layout = item_layout;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.fragment_home, null);
return new ViewHolder(v);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
final Item item = items.get(position);
Drawable drawable = ContextCompat.getDrawable(context, item.getImage());
holder.image.setBackground(drawable);
holder.title2.setText(item.getTitle());
holder.cardview.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(context, item.getTitle(), Toast.LENGTH_SHORT).show();
}
});
}
#Override
public int getItemCount() {
return this.items.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
ImageView image;
TextView title2;
CardView cardview;
public ViewHolder(View itemView) {
super(itemView);
image = (ImageView) itemView.findViewById(R.id.image);
title2 = (TextView) itemView.findViewById(R.id.title2);
cardview = (CardView) itemView.findViewById(R.id.cardview);
}
}
}
Item.java
public class Item {
int image;
String title;
int getImage() { return this.image; }
String getTitle() { return this.title; }
public Item(int image, String title) {
this.image = image;
this.title = title;
}
}
fragment_home.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
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/MainLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/text_home"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/title_home"
android:textSize="40sp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.952"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerview"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:layout_constraintBottom_toTopOf="#+id/bh"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/text_home" />
<Button
android:id="#+id/bh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="50dp"
android:text="#string/title_settings"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
card.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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<com.google.android.material.card.MaterialCardView
android:id="#+id/cardview"
android:layout_width="match_parent"
android:layout_height="200dp"
android:clickable="true"
android:focusable="true"
android:foreground="?android:attr/selectableItemBackground"
app:cardCornerRadius="20dp"
app:cardElevation="4dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="150dp"
android:scaleType="centerCrop" />
<TextView
android:id="#+id/title2"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_margin="5dp"
android:text="TextView"
android:textSize="25sp" />
</LinearLayout>
</com.google.android.material.card.MaterialCardView>

Seems you are inflating the wrong layout in RecyclerAdapter.java
try this
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ViewHolder> {
Context context;
List<Item> items;
int item_layout;
public RecyclerAdapter(Context context, List<Item> items, int item_layout) {
this.context = context;
this.items = items;
this.item_layout = item_layout;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.card, null);
return new ViewHolder(v);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
final Item item = items.get(position);
Drawable drawable = ContextCompat.getDrawable(context, item.getImage());
holder.image.setBackground(drawable);
holder.title2.setText(item.getTitle());
holder.cardview.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(context, item.getTitle(), Toast.LENGTH_SHORT).show();
}
});
}
#Override
public int getItemCount() {
return this.items.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
ImageView image;
TextView title2;
CardView cardview;
public ViewHolder(View itemView) {
super(itemView);
image = (ImageView) itemView.findViewById(R.id.image);
title2 = (TextView) itemView.findViewById(R.id.title2);
cardview = (CardView) itemView.findViewById(R.id.cardview);
}
}

Getting Problem In RecycleView with TextInputEditText

I am a new Programmer, actually I was trying to make an app. I was trying to make an activity that uses RecyclerView to Show TextInputEditText with spinner and TextView. It means that I was trying to make an activity that uses Recyclerview and In the layout of Recycler View, I have used Text Input Edit Text and Spinner and TextView. I have put these three in a single layout. But the main problem that I facing is that when I launch my app with my code then it remains blank activity it is not showing TextInputEditText nor spinner and nor TextView.
So the conclusion is I want to show [TextInputEditText, Spinner and TextView] in RecyclerView But my code is returning Blank Activity.
Here is my code:-
It is my adapter class:-
public class SpecialHoursAdapter extends RecyclerView.Adapter<SpecialHoursAdapter.SpecialHourHolder> {
// private ArrayList[] mDataSet;
private List<SpecialHorusModal> modal = new ArrayList<>();
private Context context;
public SpecialHoursAdapter(Context context) {
this.context = context;
}
#NonNull
#Override
public SpecialHourHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.special_hours_layout_card, parent, false);
return new SpecialHourHolder(view);
}
#Override
public void onBindViewHolder(#NonNull SpecialHourHolder holder, int position) {
}
#Override
public int getItemCount() {
return modal.size();
}
public static class SpecialHourHolder extends RecyclerView.ViewHolder {
private TextInputEditText editText;
private Spinner spinner;
private TextView textView;
public SpecialHourHolder(#NonNull View itemView) {
super(itemView);
editText = itemView.findViewById(R.id.special_hours_editor);
spinner = itemView.findViewById(R.id.spinner_special_hours_date);
textView = itemView.findViewById(R.id.time_picker_special_horus);
}
}
}
It is My MainActivity:-
public class SpecialHoursActivity extends AppCompatActivity {
private RecyclerView containerRecyclerView;
private RecyclerView.LayoutManager first, container;
private SpecialHoursAdapter adapter;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_special_horus);
// mainRecyclerView = findViewById(R.id.activity_special_horus_main_recyclerview);
containerRecyclerView = findViewById(R.id.layout_container_recyclerview_special_hours);
// mainRecyclerView.setHasFixedSize(true);
containerRecyclerView.setHasFixedSize(true);
first = new LinearLayoutManager(this);
container = new LinearLayoutManager(this);
// mainRecyclerView.setLayoutManager(first);
containerRecyclerView.setLayoutManager(container);
containerRecyclerView.setAdapter(adapter);
}
}
Here is my RecyclerView Layout:-
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<com.google.android.material.textfield.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.google.android.material.textfield.TextInputEditText
android:id="#+id/special_hours_editor"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Enter Special Hours"
android:inputType="text"
android:maxLength="20" />
</com.google.android.material.textfield.TextInputLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Spinner
android:id="#+id/spinner_special_hours_date"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/time_picker_special_horus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:gravity="end"
android:text="00:00" />
</LinearLayout>
</LinearLayout>
</androidx.cardview.widget.CardView>
My Main Layout -
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/activity_special_horus_main_recyclerview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:scrollbars="vertical">
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="#+id/layout_container_recyclerview_special_hours"
android:orientation="vertical"
android:scrollbars="vertical">
</androidx.recyclerview.widget.RecyclerView>
</RelativeLayout>
I have not used any modal class because I don't know how to use it with Widgets.

you need to pass the data to your adapter
public SpecialHoursAdapter(Context context,List<SpecialHorusModal> data) {
this.context = context;
this.model=data; //it will show your recyclerview
}
we could not show the Recyclerview with empty data

You need to populate the data your Adapter holds, adapter with empty data will obviously show no items.
public class SpecialHoursAdapter extends RecyclerView.Adapter<SpecialHoursAdapter.SpecialHourHolder> {
private List<SpecialHorusModal> items = new ArrayList<>();
private Context context;
public SpecialHoursAdapter(Context context) {
this.context = context;
}
//Call this in onClick of your button, passing it the object to add
public void addItem(SpecialHoursModal item) {
items.add(item);
notifyDataSetChange(); //This is important
}
#NonNull
#Override
public SpecialHourHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.special_hours_layout_card, parent, false);
return new SpecialHourHolder(view);
}
#Override
public void onBindViewHolder(#NonNull SpecialHourHolder holder, int position) {
//Bind the data to view for the object at this position
SpecialHorusModal item = items.get(position);
//...
}
#Override
public int getItemCount() {
return items.size();
}
public static class SpecialHourHolder extends RecyclerView.ViewHolder {
private TextInputEditText editText;
private Spinner spinner;
private TextView textView;
public SpecialHourHolder(#NonNull View itemView) {
super(itemView);
editText = itemView.findViewById(R.id.special_hours_editor);
spinner = itemView.findViewById(R.id.spinner_special_hours_date);
textView = itemView.findViewById(R.id.time_picker_special_horus);
}
}
}
When your button is clicked, or you need to add an item:
adapter.addItem(new SpecialHorusModal(...));

"E/RecyclerView: No adapter attached; skipping layout"

So, for a personal project I'm making a stream app for Android which are separated by three fragments in the main screen where each of those fragment will be a list of a type of show in our archive, like movies, TV series and animations by using a RecyclerView inside of them.
That being said, after some errors that I managed to fix, the app is not showing what was expected, by skipping the RecyclerView because it has no "adapter".
Here is the code so far:
The main activity:
public class MenuPrincipal extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.menu_principal);
AbasMenuPrincipalAdapter adapter = new AbasMenuPrincipalAdapter( getSupportFragmentManager() );
adapter.adicionar( new FilmesFragment() , "Filmes");
adapter.adicionar( new SeriesFragment() , "Series");
adapter.adicionar( new AnimacoesFragment() , "Animações");
ViewPager viewPager = (ViewPager) findViewById(R.id.abas_view_pager);
viewPager.setAdapter(adapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.abas);
tabLayout.setupWithViewPager(viewPager);
}
}
One of the fragments used on the main screen:
public class AnimacoesFragment extends Fragment {
private RecyclerView mRecyclerView;
private RecyclerView.Adapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
ArrayList<Item> exemploItemList = new ArrayList<Item>();
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.animacoes_fragment, container, false);
TextView tv = view.findViewById(R.id.text1);
tv.setText("Você está na terceira aba");
exemploItemList.add(new Item(R.drawable.ic_android, "Line1", "line2"));
exemploItemList.add(new Item(R.drawable.ic_desktop_mac, "Line2", "line3"));
exemploItemList.add(new Item(R.drawable.ic_laptop_windows, "Line4", "line5"));
mRecyclerView = (RecyclerView) view.findViewById(R.id.AnimacaoRecyclerView);
mRecyclerView.setHasFixedSize(true);
LinearLayoutManager llm = new LinearLayoutManager(getActivity());
llm.setOrientation(LinearLayoutManager.VERTICAL);
mRecyclerView.setLayoutManager(llm);
ItemAdapter adapter = new ItemAdapter(exemploItemList);
mAdapter = adapter;
mRecyclerView.setAdapter(mAdapter);
return view;
}
}
And its layout:
<?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="horizontal">
<TextView
android:id="#+id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/AnimacaoRecyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="4dp"
android:scrollbars="vertical" />
</LinearLayout>
This is what I'm trying to show on that RecyclerView (later will be the real thing, now it's just a test):
public class Item {
private int mImageResource;
private String text1;
private String text2;
public Item(int mImageResource, String text1, String text2) {
this.mImageResource = mImageResource;
this.text1 = text1;
this.text2 = text2;
}
public int getmImageResource() {
return mImageResource;
}
public void setmImageResource(int mImageResource) {
this.mImageResource = mImageResource;
}
public String getText1() {
return text1;
}
public void setText1(String text1) {
this.text1 = text1;
}
public String getText2() {
return text2;
}
public void setText2(String text2) {
this.text2 = text2;
}
}
It's layout:
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto"
app:cardCornerRadius="4dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="4dp">
<ImageView
android:id="#+id/imageView"
android:layout_width="50dp"
android:layout_height="50dp"
android:contentDescription="#string/imagem"
android:padding="2dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="50dp"
android:layout_marginTop="0dp"
android:text="#string/line1"
android:textColor="#000000"
android:textSize="20sp"
android:textStyle="bold"
android:id="#+id/textView"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="50dp"
android:layout_marginTop="28dp"
android:text="#string/line2"
android:textSize="15sp"
android:textStyle="bold"
android:id="#+id/textView2"/>
</RelativeLayout>
</androidx.cardview.widget.CardView>
Finally, the adapter used to convert the list:
public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ItemViewHolder> {
private ArrayList<Item> mItemList;
public static class ItemViewHolder extends RecyclerView.ViewHolder{
public ImageView mImageView;
public TextView mTextView1;
public TextView mTextView2;
public ItemViewHolder(#NonNull View itemView) {
super(itemView);
mImageView = itemView.findViewById(R.id.imageView);
mTextView1 = itemView.findViewById(R.id.textView);
mTextView2 = itemView.findViewById(R.id.textView2);
}
}
#NonNull
#Override
public ItemViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item, parent, false);
ItemViewHolder ivh = new ItemViewHolder(v);
return ivh;
}
public ItemAdapter(ArrayList<Item> itemList){
mItemList = itemList;
}
#Override
public void onBindViewHolder(#NonNull ItemViewHolder holder, int position) {
Item currentItem = mItemList.get(position);
holder.mImageView.setImageResource(currentItem.getmImageResource());
holder.mTextView1.setText(currentItem.getText1());
holder.mTextView2.setText(currentItem.getText2());
}
#Override
public int getItemCount() {
return mItemList.size();
}
}

First of all, check your fragment layout file. The linear layout parent orientation set to 'horizontal' and width of it's child views ('textview' & 'recyclerview') is match parent. This won't work.
Try to initialize your recyclerview adapter in 'onCreate' and use 'notifyDataSetChanged()' after setting up the adapter with recyclerview.

LinearLayout within Recyclerview, within another LinearLayout within another RecyclerView

Good morning, I have a problem trying to link a Recyclerview with another Recyclerview, I mean one within others, the first recyclerview is in my activity, which in turn is filler for a second recyclerview, which is in a LinearLayout, since Once that recyclerview is filled by another layout that has an ImageView and a TextView, the problem is that I can not use the two recycler view since the app stops, but if I use the layout separately if they work in the same way, I know if I explain, I have 3 layouts which are:
The problem is that I can not use both recycler view since the app stops, but if I use the layout separately if they work in the same way, I do not know if I explain myself, I have 3 layouts, the one in the activity that contains a recyclerview, the container of the elements that contains the second recyclerview and a texview, and finally the layout portraitLayout that contains an imageView and a texView, if I only use the layout of the activity, the second one is rendered well but without any image, and if I remove the layout of the activity and leave the second with the third this is rendered with their respective images.
I have 2 adapters which are:
AdapterPortrait:
`public class Adapter_Portrait extends RecyclerView.Adapter<Adapter_Portrait.ViewHolder> {
private List<Portrait> portraits;
private int layout;
private OnItemClickListener listener;
private Context context;
public Adapter_Portrait(List<Portrait> portraits, int layout, OnItemClickListener listener) {
this.portraits = portraits;
this.layout = layout;
this.listener = listener;
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v= LayoutInflater.from(parent.getContext()).inflate(this.layout,parent,false);
ViewHolder vh=new ViewHolder(v);
context=parent.getContext();
return vh;
}
#Override
public void onBindViewHolder(#NonNull ViewHolder holder, int position) {
holder.bind(portraits.get(position),this.listener);
}
#Override
public int getItemCount() {
return portraits.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
ImageView imageView;
TextView textView;
public ViewHolder(View itemView) {
super(itemView);
this.imageView = itemView.findViewById(R.id.imagePortrait);
this.textView = itemView.findViewById(R.id.textNamePortrait);
}
public void bind(final Portrait portrait, final OnItemClickListener listener){
this.textView.setText(portrait.getName_portrait());
Picasso.with(context).load(portrait.getImagePortrait()).fit().into(imageView);
itemView.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view) {
listener.onItemClick(portrait, getAdapterPosition());
}
});
}
}
public interface OnItemClickListener{
void onItemClick(Portrait portrait, int position);
}
}`
AdapterList_Pieces:
`public class AdapterList_Pieces extends
RecyclerView.Adapter<AdapterList_Pieces.ViewHolder> {
private List<Artist> artists;
private int layout;
private OnItemClickListener listener;
private Context context;
public AdapterList_Pieces(List<Artist> artists, int layout, OnItemClickListener listener) {
this.artists = artists;
this.layout = layout;
this.listener = listener;
}
public class ViewHolder extends RecyclerView.ViewHolder{
RecyclerView recyclerView;
TextView textView;
public ViewHolder(View itemView) {
super(itemView);
this.recyclerView = itemView.findViewById(R.id.RecyclerViewPieces);
this.textView = itemView.findViewById(R.id.textViewPieces);
}
public void bind(final Artist artist, final OnItemClickListener listener){
this.textView.setText(artist.getName_artist());
itemView.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view) {
listener.onItemClick(artist, getAdapterPosition());
}
});
}
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v= LayoutInflater.from(parent.getContext()).inflate(this.layout,parent,false);
ViewHolder vh=new ViewHolder(v);
context=parent.getContext();
return vh;
}
#Override
public void onBindViewHolder(#NonNull ViewHolder holder, int position) {
holder.bind(artists.get(position),this.listener);
}
#Override
public int getItemCount() {
return artists.size();
}
public interface OnItemClickListener{
void onItemClick(Artist artist, int position);
}
}`
My Activity is:
public class PiecesActivity extends AppCompatActivity {
List<Artist> artists;
List<Portrait> portraits;
RecyclerView recyclerView;
RecyclerView recyclerViewPiece;
RecyclerView.Adapter rAdapter;
RecyclerView.LayoutManager layoutManagerPiece;
RecyclerView.Adapter AdapterPiece;
RecyclerView.LayoutManager layoutManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.portraitcontenetorslayout);
recyclerView= findViewById(R.id.recyclerViewListPieces);
recyclerViewPiece= findViewById(R.id.RecyclerViewPieces);
artists= ConsultingInformation.getArtist();
portraits= ConsultingInformation.getPortrait();
layoutManager = new LinearLayoutManager(this);
layoutManagerPiece = new LinearLayoutManager(this);
rAdapter= new Adapter_Portrait(portraits,R.layout.portraitlayout, new Adapter_Portrait.OnItemClickListener(){
#Override
public void onItemClick(Portrait portrait, int position) {
Toast.makeText(PiecesActivity.this, "This piece is "+ portraits.get(position).getName_portrait(), Toast.LENGTH_LONG).show();
}
});
recyclerViewPiece.setHasFixedSize(true);
recyclerViewPiece.setItemAnimator(new DefaultItemAnimator());
recyclerViewPiece.setLayoutManager(layoutManagerPiece);
recyclerViewPiece.setAdapter(rAdapter);
AdapterPiece= new AdapterList_Pieces(artists,R.layout.portraitcontenetorslayout, new AdapterList_Pieces.OnItemClickListener(){
#Override
public void onItemClick(Artist artist, int positionArt) {
Toast.makeText(PiecesActivity.this, "This list of pieces is "+ artists.get(positionArt).getName_artist(), Toast.LENGTH_LONG).show();
}
});
recyclerView.setHasFixedSize(true);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(AdapterPiece);
}
}`
I had read that it was not possible to put a list downloadble within another, but i did not get an unstable method for my case that are two list of objects one within another.
My layouts just in case.
PortraitLayout:
<?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="wrap_content">
<ImageView
android:id="#+id/imagePortrait"
android:layout_width="78dp"
android:layout_height="63dp"
android:layout_marginLeft="25dp"
android:textAlignment="center"
android:contentDescription="TODO"
android:layout_marginStart="25dp" />
<TextView
android:id="#+id/textNamePortrait"
android:layout_width="225dp"
android:layout_height="30dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:text="TextView"
android:layout_marginStart="10dp" />
</LinearLayout>
portraitcontenetorlayout:
<?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="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/textViewPieces"
android:layout_width="match_parent"
android:layout_height="35dp"
android:background="#BCBCBC"
android:paddingLeft="7dp"
android:text=" TextView"
android:gravity="center_vertical" />
<android.support.v7.widget.RecyclerView
android:id="#+id/RecyclerViewPieces"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
activitypieces:
<?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">
<TextView
android:id="#+id/textView3"
android:layout_width="match_parent"
android:gravity="center"
android:layout_height="30dp"
android:text="Obras" />
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerViewListPieces"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>

VideoView not playing video or audio in RecyclerView

Hi I am trying to create a video journal fragment that has a recyclerview which contains a title, a mood, and a video in each list item. For some reason the videoview is not even showing up. The videofilePath is saving correctly and I've checked with println statements. I'm not getting any errors, but its just completely collapsed. The next list item starts before the video displays.
Here is my ViewHolder class
public class JournalViewHolder extends RecyclerView.ViewHolder{
private TextView title;
private TextView mood;
private VideoView mVideoView;
MediaController mMediaController;
Context mContext;
public JournalViewHolder(View view, Context context){
super(view);
mContext = context;
title = (TextView)view.findViewById(R.id.JournalTitle);
mood = (TextView)view.findViewById(R.id.JournalMood);
mVideoView = (VideoView)view.findViewById(R.id.JournalVideo);
mMediaController = new MediaController(context);
}
public void bind(JournalEntry journalEntry){
title.setText(journalEntry.getTitle());
mood.setText(journalEntry.getMood());
if(journalEntry.getVideoFileName() != null){
Uri uri = Uri.parse(journalEntry.getVideoFileName());
mVideoView.setVideoURI(uri);
mVideoView.requestFocus();
mVideoView.setMediaController(mMediaController);
mVideoView.setZOrderOnTop(true);
mVideoView.start();
}
}
}
Here is my adapter class
public class JournalRecyclerViewAdapter extends RecyclerView.Adapter<JournalViewHolder> {
private List mJournalEntries;
private Context mContext;
public JournalRecyclerViewAdapter(List<JournalEntry> entries, Context context){
mJournalEntries = entries;
mContext = context;
}
#Override
public JournalViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.inflate(R.layout.journal_list_items, parent, false);
JournalViewHolder holder = new JournalViewHolder(view, mContext);
return holder;
}
#Override
public void onBindViewHolder(JournalViewHolder holder, int position) {
JournalEntry entry = mJournalEntries.get(position);
holder.bind(entry);
}
#Override
public int getItemCount() {
return mJournalEntries.size();
}
}
Here is my class that initiates the list of items and the recyclerview
public class JournalView extends FragmentLoggingLifeCycler {
private RecyclerView mRecyclerView;
DataAccess mDataAccess;
List<JournalEntry> mEntryList;
public static final String USERNAME_KEY = "username";
public static final String PASSWORD_KEY = "password";
String password;
String username;
User currentUser;
private Context mContext;
public JournalView() {
// Required empty public constructor
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
mContext = activity.getApplicationContext();
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
mContext = context;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_journal_view, container, false);
Bundle data = getArguments();
username = data.getString(USERNAME_KEY);
password = data.getString(PASSWORD_KEY);
LinearLayoutManager manager = new LinearLayoutManager(getActivity());
mDataAccess = DataAccess.getDataAccess(container.getContext());
currentUser = mDataAccess.getLoginUser(username, password);
mEntryList = mDataAccess.getAllJournals();
//mDataAccess.mDatabase.delete(Scheme.Journal.NAME, null, null);
// mEntryList = trimList(mEntryList, currentUser.getUsername());
// for(int counter = 0; counter < mEntryList.size(); counter++){
// System.out.println(mEntryList.get(counter).getTitle());
// }
mRecyclerView = (RecyclerView)view.findViewById(R.id.JournalList);
mRecyclerView.setLayoutManager(manager);
mRecyclerView.setAdapter(new JournalRecyclerViewAdapter(mEntryList, mContext));
return view;
}
private static List<JournalEntry> trimList(List<JournalEntry> entries, String username){
List<JournalEntry> returnedList = new ArrayList<>();
for(int i = 0; i< returnedList.size(); i++){
System.out.println(entries.get(i).getUsername()+ ", " +username);
if(entries.get(i).getUsername().equals(username)){
returnedList.add(entries.get(i));
}
}
return returnedList;
}
}
and now here are my XML files.
<android.support.v7.widget.RecyclerView
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:layout_weight="1"
android:id="#+id/JournalList">
List Item files
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:layout_weight="2">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
android:text="#string/Title"/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:id="#+id/JournalTitle"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
android:orientation="horizontal">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
android:text="#string/Mood"/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:id="#+id/JournalMood"/>
</LinearLayout>
<VideoView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:id="#+id/JournalVideo"
android:visibility="visible"/>

Check out this Sample Code for how to have videos playing inside RecyclerView
VideoInRecyclerViewExamples

I'm developing a library named OneItem that may help you.
https://github.com/tbrand/OneItem
In #selectItemAt(int position), start playing video with your arbitrary VideoView(such as MediaPlayer or ExoPlayer).
In #UnSelectItemAt(int position), stop playing video and release it.