Develop Reference

Why doesn't the onListItemClick function in the ListFragment fire when I add a button or edittext to the item?

I render each element of my ListFragment with two buttons and edittext, but in this case, onListItemClick does not work for me. And as soon as you hide the buttons and edittext in the adapter, everything immediately starts working, I think that this is some kind of conflict between the fields, but I don’t know how to fix it. I will be grateful for any help.
My adapter:
public class ProductAdapter extends ArrayAdapter<ProductsModel> {
private LayoutInflater inflater;
private int layout;
private ArrayList<ProductsModel> productsList;
private String nameFragment;
private Parsers parser;
public ProductAdapter(Context mContext, int resource, ArrayList<ProductsModel> products,
String nameFragment) {
super(mContext, resource, products);
this.productsList = products;
this.layout = resource;
this.inflater = LayoutInflater.from(mContext);
this.parser = new Parsers(mContext);
this.nameFragment = nameFragment;
}
public View getView(int position, View convertView, ViewGroup parent){
final ViewHolder viewHolder;
if(convertView==null){
convertView = inflater.inflate(this.layout, parent, false);
viewHolder = new ViewHolder(convertView);
convertView.setTag(viewHolder);
}else{
viewHolder = (ViewHolder) convertView.getTag();
}
final ProductsModel products = productsList.get(position);
PricesModel price = parser.PriceParser((int) products.getId());
viewHolder.imageProduct.setImageResource(R.drawable.img);
viewHolder.imageProduct.setScaleType(ImageView.ScaleType.FIT_START);
viewHolder.nameProduct.setText(products.getName());
viewHolder.categoryProduct.setText("Group");
viewHolder.priceValueProduct.setText("Cost: "+price.getPriceValue());
viewHolder.countProduct.setText("0");
if(nameFragment.equals("ListProduct")){
viewHolder.priceValueProduct.setVisibility(View.GONE);
viewHolder.countProduct.setVisibility(View.GONE);
viewHolder.buttonPlus.setVisibility(View.GONE);
viewHolder.buttonMinus.setVisibility(View.GONE);
}
return convertView;
}
private class ViewHolder {
final ImageView imageProduct;
final TextView nameProduct, categoryProduct, priceValueProduct;
final EditText countProduct;
final Button buttonPlus, buttonMinus;
ViewHolder(View view){
imageProduct = view.findViewById(R.id.imageProduct);
nameProduct = view.findViewById(R.id.nameProduct);
categoryProduct = view.findViewById(R.id.categoryProduct);
priceValueProduct = view.findViewById(R.id.priceValueProduct);
countProduct = view.findViewById(R.id.countProduct);
buttonPlus = view.findViewById(R.id.buttonPlus);
buttonMinus = view.findViewById(R.id.buttonMinus);
}
}
}
My fragment:
public class ListProducts extends ListFragment {
private ProductAdapter mProductAdapter;
private Parsers parser;
private Context mContext;
private View view;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_list_products, container, false);
mContext = getContext();
parser = new Parsers(mContext);
ArrayList<ProductsModel> productsList = parser.ProductsParser();
ArrayList<ProductsModel> improveProductsList = new ArrayList<>();
for(int i = 0; i < productsList.size(); i++){
improveProductsList.add(productsList.get(i));
}
EditText searchProduct = (EditText) view.findViewById(R.id.searchEditText);
searchProduct.addTextChangedListener(new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
String nameProduct = s.toString();
if(count != 0) {
improveProductsList.clear();
for (int i = 0; i < productsList.size(); i++) {
if (productsList.get(i).getName().toLowerCase().indexOf(nameProduct.toLowerCase()) != -1) {
improveProductsList.add(productsList.get(i));
}
}
}else{
for(int i = 0; i < productsList.size(); i++){
improveProductsList.add(productsList.get(i));
}
}
}
#Override
public void afterTextChanged(Editable s) {}
});
try {
int idCompany = getArguments().getInt("idCompany",0);
int idStore = getArguments().getInt("idStore", 0);
mProductAdapter = new ProductAdapter(mContext, R.layout.simple_list_item_product, improveProductsList, "NewOrder");
}catch (NullPointerException e){
mProductAdapter = new ProductAdapter(mContext, R.layout.simple_list_item_product, improveProductsList, "ListProduct");
}
setListAdapter(mProductAdapter);
return view;
}
#Override
public void onListItemClick(#NonNull ListView l, #NonNull View v, int position, long id) {
super.onListItemClick(l, v, position, id);
Log.d("TAG", ""+position);
}
}
XML simple_list_item_product:
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="#+id/imageProduct"
android:layout_width="100sp"
android:layout_height="100sp"
android:scaleType="fitStart"/>
<LinearLayout
android:id="#+id/linearLayoutInfoAndButtonProduct"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginLeft="5sp">
<TextView
android:id="#+id/nameProduct"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="15sp"
android:textStyle="bold"
android:textColor="#color/black"
android:text="Name prod"/>
<TextView
android:id="#+id/categoryProduct"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="10sp"
android:textColor="#color/black"
android:text="Category prod"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf = "#+id/nameProduct" />
<TextView
android:id="#+id/priceValueProduct"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="10sp"
android:textColor="#color/black"
android:text="Cost prod"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf = "#+id/nameCompany" />
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:orientation="horizontal">
<Button
android:id="#+id/buttonMinus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="-"/>
<EditText
android:id="#+id/countProduct"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<Button
android:id="#+id/buttonPlus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="+" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
XML fragment_list_products:
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/fragment_list_products"
tools:context="com.example.rbsoftsalesmobile.ui.productsscreen.ListProducts">
<TextView
android:gravity="center_horizontal"
android:id="#+id/game_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center"
android:textAllCaps="false"
android:textAppearance="#style/TextAppearance.AppCompat.Headline"
android:textSize="22sp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_chainStyle="packed"
android:text="List prod"/>
<EditText
android:id="#+id/searchEditText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Search"
app:layout_constraintTop_toBottomOf="#+id/game_title"
android:layout_margin="5sp"/>
<ListView
android:id="#android:id/list"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/searchEditText" />
</androidx.constraintlayout.widget.ConstraintLayout>

I solved my problem with setFocusable(false), for every element that can intercept input from other components like Button, EditText, CheckBox and others.
if(nameFragment.equals("ListProduct")){
viewHolder.priceValueProduct.setVisibility(View.GONE);
viewHolder.countProduct.setVisibility(View.GONE);
viewHolder.buttonPlus.setVisibility(View.GONE);
viewHolder.buttonMinus.setVisibility(View.GONE);
}
viewHolder.countProduct.setFocusable(false);
viewHolder.buttonPlus.setFocusable(false);
viewHolder.buttonMinus.setFocusable(false);
return convertView;
}

Android View InflateExeption showing up when trying to start an app

I'm new to android development, and I'm having issues with my app crashing when I'm trying to start it
This is the error message:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.cybermath/com.example.cybermath.modules.MainActivity}: android.view.InflateException: Binary XML file line #25: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference
And this is the XML file for the data within recycler viewer:
'''
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="100"
android:gravity="center_vertical"
android:background="#color/colorPrimaryDark"
>
<TextView
android:id="#+id/account_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="70"
android:background="#color/colorPrimary"
android:lines="1"
android:padding="10dp"
android:text="#string/app_name"
android:textColor="#color/colorText" >
</TextView>
<TextView
android:id="#+id/account_progress"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="20"
android:background="#color/colorPrimary"
android:text="Enter"
android:textSize="12sp"
android:textColor="#color/colorText"
>
</TextView>
'''
This is the XML for the MainActivity:
<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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="MainActivity">
<androidx.recyclerview.widget.RecyclerView
android:layout_width="416dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/informationView"
android:id="#+id/recyclerView">
</androidx.recyclerview.widget.RecyclerView>
<!--<TextView
android:id="#+id/informationView"
android:layout_width="408dp"
android:layout_height="50dp"
android:foregroundTint="#00050000"
android:paddingStart="10dp"
android:paddingLeft="10dp"
android:paddingTop="10dp"
android:paddingRight="10dp"
android:paddingBottom="10dp"
android:text="Choose an account"
android:textAlignment="center"
android:textColor="#000000"
android:textSize="20sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.333"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
</TextView>-->
</androidx.constraintlayout.widget.ConstraintLayout>
And here is the code for the MainActivity:
'''
public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";
// UI
private RecyclerView mRecyclerView;
// Variables
#NonNull
private ArrayList<Account> mAccounts = new ArrayList<>();
private AccountsRecyclerAdapter mAccountsRecyclerAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_account_list);
mRecyclerView = findViewById(R.id.recyclerView);
initRecyclerView();
insertFakeAccounts();
}
private void insertFakeAccounts(){
for(int i = 0; i < 1000; i++){
Account account = new Account();
account.setName("title #" + i);
mAccounts.add(account);
}
mAccountsRecyclerAdapter.notifyDataSetChanged();
}
private void initRecyclerView(){
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(linearLayoutManager);
mAccountsRecyclerAdapter = new AccountsRecyclerAdapter(mAccounts);
mRecyclerView.setAdapter(mAccountsRecyclerAdapter);
}
'''
And my adapter public class AccountsRecyclerAdapter extends
RecyclerView.Adapter<AccountsRecyclerAdapter.ViewHolder> {
private ArrayList<Account> mAccounts = new ArrayList<>();
public AccountsRecyclerAdapter(ArrayList<Account> accounts) {
this.mAccounts = accounts;
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int i) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_account_list, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull AccountsRecyclerAdapter.ViewHolder viewHolder, int i) {
viewHolder.name.setText(mAccounts.get(i).getName());
}
#Override
public int getItemCount() {
return mAccounts.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
TextView name;
public ViewHolder(#NonNull View itemView) {
super(itemView);
name = itemView.findViewById(R.id.account_name);
}
}

Some if the thing are not as per requirement may cause an exception. Check for condition as
if(yourValue !=null && yourValue.equals("desired value"){
//do your stuff
}

Recycler View and Card View not displaying cards

This is my Activity:
public String id;
public String passPhrase;
public ArrayList<SongCell> songs;
private RecyclerView recyclerView;
private MyAdapter myAdapter;
private RecyclerView.LayoutManager layoutManager;
#TargetApi(Build.VERSION_CODES.JELLY_BEAN)
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.songs_view_layout);
Context context = this.getApplicationContext();
Bundle stateData = getIntent().getExtras();
try
{
id = stateData.getString("id");
passPhrase = stateData.getString("passPhrase");
ArrayList data;
recyclerView = (RecyclerView) findViewById(R.id.song_list);
recyclerView.setHasFixedSize(true);
layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
data = new ArrayList<SongCell>();
for (int i=0; i<5;i++)
{
data.add(new SongCell("Song "+i,"Artist "+i, null));
}
myAdapter = new MyAdapter(data);
recyclerView.setAdapter(myAdapter);
}
catch(Exception e)
{
Log.d("Error: ", e.toString());
}
}
card.xml
<android.support.v7.widget.CardView android:layout_width="fill_parent"
android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="6dp"
>
<ImageView
android:layout_width="70dp"
android:layout_height="70dp"
android:id="#+id/song_photo"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginRight="16dp"
android:background="#drawable/error" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/song_name"
android:textSize="30sp"
android:text="Song Name"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:textColor="#000000" />
<ImageButton
android:layout_width="60dp"
android:layout_height="60dp"
android:id="#+id/vote_button"
android:layout_alignParentRight="true"
android:layout_marginRight="8dp"
android:background="#drawable/arrow" />
</RelativeLayout>
</android.support.v7.widget.CardView>
Activity.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="match_parent"
android:background="#2d2d2d">
<TableLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TableRow
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:paddingBottom="30dp"
android:layout_marginBottom="10dp"
android:background="#222222"></TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:paddingBottom="10dp">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center">
<ImageView
android:layout_width="70dp"
android:layout_height="70dp"
android:id="#+id/featSongImage1"
android:contentDescription="#string/newsongimage"
android:background="#drawable/error" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/songname"
android:id="#+id/featSongName1" />
<ImageButton
android:layout_width="25dp"
android:layout_height="25dp"
android:id="#+id/featSongButt1"
android:background="#drawable/arrow"
android:contentDescription="#string/votearrow" />
</LinearLayout>
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent"
android:foregroundGravity="fill_horizontal"
android:gravity="fill_horizontal|center">
<android.support.v7.widget.RecyclerView
android:id="#+id/song_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center_horizontal" />
</TableRow>
</TableLayout>
</LinearLayout>
And this is my custom adapter
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder>
{
private ArrayList<SongCell> data;
public MyAdapter(ArrayList<SongCell> dataI)
{
data = dataI;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType)
{
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.song_card,viewGroup,false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(ViewHolder viewholder, int pos) {
viewholder.songName.setText(data.get(pos).getName());
viewholder.artist.setText(data.get(pos).getArtist());
viewholder.image.setImageBitmap(data.get(pos).getArtwork());
}
#Override
public int getItemCount() {
return 0;
}
#Override
public int getItemViewType(int position) {
return 0;
}
public class ViewHolder extends RecyclerView.ViewHolder
{
TextView songName;
TextView artist;
ImageView image;
ImageButton voteButton;
public ViewHolder(View v)
{
super(v);
this.songName = (TextView) v.findViewById(R.id.song_name);
this.image = (ImageView) v.findViewById(R.id.song_photo);
this.voteButton = (ImageButton) v.findViewById(R.id.vote_button);
}
}
}
I have looked at a ton of guides on how to get this working but it still doesn't work. Anyone have any clue what's going on? I'm on version 25.0.1, and have all the modules imported. But it's not adding a single card into the layout.

I thought it would be difficult to debug such a big code you uploaded. But luckily my eye went on this line
#Override
public int getItemCount() {
return 0;
}
return 0; in adapter.
Your list size is always 0.
instead write this
#Override
public int getItemCount() {
return data.size();
}
EDIT-1:
You will also get null pointer exception here
viewholder.artist.setText(data.get(pos).getArtist());
Because you are not initializing the artist variable in ViewHolder class.
Edit-2
#Override
public int getItemCount() {
return 0;
}
you can remove this particular code from your adapter. Because overriding the methods of class that we don't use might sometimes result in errors that you can't even imagine.

android set the size of widget in viewholder,but the content does not show?

I want to fit widget CardView to all kinds of screens,and my layout is embed CardViewin RecycleView, I add setLayoutParams() in ViewHolder,but after it,my content in CardViewdoes not show,I don't know how to deal with it,Hope somebody could help me.Here is my code:
cardview.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/cv_item"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"
android:foreground="?android:attr/selectableItemBackground">
<LinearLayout
android:id="#+id/layoutView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:textSize="20dp" />
<TextView
android:id="#+id/texttitle"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:textColor="#color/black"
android:textSize="25dp" />
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:textSize="9dp" />
<TextView
android:id="#+id/textcontent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:textColor="#color/black" />
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:textSize="20dp" />
<View
android:id="#+id/colorfulview"
android:layout_width="20dp"
android:layout_height="5dp"
android:layout_gravity="center_horizontal"
android:background="#color/black"></View>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:textSize="18dp" />
</LinearLayout>
and my adapter.java:
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.TextViewHolder> {
private final LayoutInflater mLayoutInflater;
private final Context mContext;
private int mScreenHeight, mScreenWidth;
private String[] mTitles;
private String[] mContents;
private int[] mColors = {R.color.qing, R.color.zi, R.color.fenhong, R.color.juhuang, R.color.qianzi, R.color.lan};
public RecyclerViewAdapter(Context context, int screenHeight, int screenWidth) {
mTitles = context.getResources().getStringArray(R.array.titles);
mContents = context.getResources().getStringArray(R.array.contents);
mContext = context;
mLayoutInflater = LayoutInflater.from(context);
mScreenHeight = screenHeight;
mScreenWidth = screenWidth;
}
#Override
public TextViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new TextViewHolder(mLayoutInflater.inflate(R.layout.item_main_recycler, parent, false));
}
#Override
public void onBindViewHolder(TextViewHolder holder, int position) {
holder.mTextTitle.setText(mTitles[position]);
holder.mTextContent.setText(mContents[position]);
holder.mColorfulView.setBackgroundResource(mColors[position]);
holder.mLayoutView.setLayoutParams(new CardView.LayoutParams(mScreenWidth / 2, (int) (mScreenHeight * 0.24)));
}
#Override
public int getItemCount() {
return mTitles == null ? 0 : mTitles.length;
}
public static class TextViewHolder extends RecyclerView.ViewHolder {
#InjectView(R.id.texttitle)
TextView mTextTitle;
#InjectView(R.id.textcontent)
TextView mTextContent;
#InjectView(R.id.colorfulview)
View mColorfulView;
#InjectView(R.id.layoutView)
LinearLayout mLayoutView;
TextViewHolder(View view) {
super(view);
ButterKnife.inject(this, view);
view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("NormalTextViewHolder", "onClick--> position = " + getPosition());
}
});
}
}
}

try this in onCreateViewHolder:
View itemView = mLayoutInflater.inflate(R.layout.view_item, parent, false);
int height = screenWidth/2;
int width = screenHeight*24/100;
itemView.setMinimumHeight(height);
itemView.setMinimumWidth(width );
return new TextViewHolder(itemView);

Try to do the following:
LayoutParams params = holder.itemView.getLayoutParams();
params.height = screenWidth/2;
params.width = screenHeight*24/100;
holder.itemView.setLayoutParams(params);

Recycler's custom adapter methods are not called

i am using other layout elements and recyclerview in a layout and inflating cardview layout in oncreateViewHolder (custom adapter). Methods are only called when i just user recyclerview in a layout not with other layout elements.
<?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.support.v4.widget.SwipeRefreshLayout
android:id="#+id/swipe_layout_for_item_detail"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<android.support.v7.widget.CardView
android:id="#+id/detail_card_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/detail_category_description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:textStyle="bold"
android:layout_below="#+id/detail_category_price" />
<TextView
android:id="#+id/detail_category_price"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_gravity="center"
android:layout_margin="10dp"
android:text="Rs: 1000" />
<Button
android:id="#+id/btn_bid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Bid"
android:textColor="#color/colorPrimary"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/detail_category_price"
android:layout_margin="10dp"/>
<GridView
android:id="#+id/grid_view"
android:layout_below="#+id/btn_bid"
android:columnWidth="100dp"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
</GridView>
<View
android:layout_width="fill_parent"
android:layout_height="1dip"
android:id="#+id/view"
android:layout_marginTop="5dp"
android:layout_below="#+id/grid_view"
android:background="#000000" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="2dp"
android:text="About the seller"
android:layout_margin="5dp"
android:textSize="20sp"
android:textColor="#color/orange"
android:id="#+id/about_seller"
android:layout_below="#+id/view"
/>
<TextView
android:id="#+id/seller_user_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="username: bilal"
android:layout_margin="5dp"
android:layout_below="#+id/about_seller"/>
<Button
android:id="#+id/contact_seller_button"
android:text="contact button"
android:layout_margin="5dp"
android:layout_below="#+id/seller_user_name"
android:textColor="#color/colorPrimary"
android:shadowColor="#color/orange"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</RelativeLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.RecyclerView
android:id="#+id/bids_recycler_view"
android:layout_width="match_parent"
android:layout_below="#+id/detail_card_view"
android:layout_height="200dp"
android:scrollbars="vertical">
</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.SwipeRefreshLayout>
</RelativeLayout>
here is the layout that i am inflating
<android.support.v7.widget.CardView
android:layout_margin="5dp"
android:id="#+id/card_view"
android:layout_gravity="center"
android:background="#android:color/white"
app:cardElevation="2sp"
app:cardUseCompatPadding="true"
android:layout_width="match_parent"
android:layout_height="200dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/bid_text_View"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="$10000"
android:textStyle="bold"
android:textSize="20sp"
android:textColor="#android:color/black"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
<TextView
android:id="#+id/bidder_user_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="bidder Name"
android:textStyle="italic"
android:textSize="16sp"
android:textColor="#android:color/black"
android:layout_below="#+id/bid_text_View"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
</android.support.v7.widget.CardView>
</ScrollView>
here is the activity code ->
private RecyclerView mRecyclerView;
private SwipeRefreshLayout mSwipeRefreshLayout;
private BidsAdapter mBidsAdapter;
private ArrayList<String> arrayList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.item_detials);
String detail = getIntent().getStringExtra(AppGlobals.detial);
setTitle(detail);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
mRecyclerView = (RecyclerView)findViewById(R.id.bids_recycler_view);
mRecyclerView.setHasFixedSize(true);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
mSwipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipe_layout_for_item_detail);
mSwipeRefreshLayout.setColorSchemeResources(R.color.orange, R.color.green,
R.color.colorPrimary, R.color.gray);
mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
mSwipeRefreshLayout.setRefreshing(false);
}
});
mRecyclerView.setLayoutManager(linearLayoutManager);
mRecyclerView.canScrollVertically(LinearLayoutManager.VERTICAL);
bitmapArrayList = new ArrayList<>();
arrayList = new ArrayList<>();
arrayList.add("test one");
arrayList.add("test two");
arrayList.add("test three");
arrayList.add("test four");
arrayList.add("test five");
}
#Override
protected void onResume() {
super.onResume();
mBidsAdapter = new BidsAdapter(arrayList);
mRecyclerView.setAdapter(mBidsAdapter);
System.out.println(mRecyclerView == null);
System.out.println(mBidsAdapter == null);
mRecyclerView.addOnItemTouchListener(new BidsAdapter(arrayList, getApplicationContext()
, new BidsAdapter.OnItemClickListener() {
#Override
public void onItem(String item) {
System.out.println(item);
}
}));
System.out.println("DONE");
}
static class BidsAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements
RecyclerView.OnItemTouchListener {
private OnItemClickListener mListener;
private GestureDetector mGestureDetector;
private BidView bidView;
private ArrayList<String> items;
public interface OnItemClickListener {
void onItem(String item);
}
public BidsAdapter(ArrayList<String> data) {
super();
this.items = data;
}
public BidsAdapter(ArrayList<String> categories, Context context, OnItemClickListener listener) {
this.items = categories;
mListener = listener;
mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
});
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
System.out.println("beforeView");
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.bids_layout, parent, false);
System.out.println(view == null);
bidView = new BidView(view);
System.out.println("WORKING");
return bidView;
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
bidView.textView.setText(String.valueOf(position));
bidView.bidderTextView.setText(items.get(position));
System.out.println(position);
}
#Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View childView = rv.findChildViewUnder(e.getX(), e.getY());
if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
mListener.onItem(items.get(rv.getChildPosition(childView)));
return true;
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
#Override
public int getItemCount() {
return items.size();
}
}
static class BidView extends RecyclerView.ViewHolder {
public TextView textView;
public TextView bidderTextView;
public BidView(View itemView) {
super(itemView);
textView = (TextView) itemView.findViewById(R.id.bid_text_View);
bidderTextView = (TextView) itemView.findViewById(R.id.bidder_user_name);
}
}

you replace this
static class BidsAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements
RecyclerView.OnItemTouchListener {
instead
static class BidsAdapter extends RecyclerView.Adapter<BidsAdapter.BidView> implements
RecyclerView.OnItemTouchListener {