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Adapter returns null value

I am trying to load a RecyclerView with data, but I get a NullPointerException every time I want to load the RecyclerView. (The RecyclerView is displayed in a Dialog). First, I have this class:
public class FondosClase {
private int recurso;
private String nombre;
public int getRecurso() {
return recurso;
}
public void setRecurso(int recurso) {
this.recurso = recurso;
}
public String getNombre() {
return nombre;
}
public void setNombre(String nombre) {
this.nombre = nombre;
}
public FondosClase(){}
public FondosClase(int recurso, String nombre) {
this.recurso = recurso;
this.nombre = nombre;
}
}
Then my adapter:
public class AdaptadorMenuIzq extends RecyclerView.Adapter<AdaptadorMenuIzq.ViewHolder>{
private FondosClase[] fondosClaseArrayList;
private Context context;
public AdaptadorMenuIzq(FondosClase[] fondosClaseArrayList, Context context) {
this.fondosClaseArrayList = fondosClaseArrayList;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View layoutInflater = LayoutInflater.from(parent.getContext()).inflate(R.layout.design_rv_bg_men_izq, parent, false);
return new AdaptadorMenuIzq.ViewHolder(layoutInflater);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
final FondosClase fondosClase = fondosClaseArrayList[position];
holder.textView.setText(fondosClase.getNombre());
holder.imageView.setImageResource(fondosClase.getRecurso());
}
#Override
public int getItemCount() {
return fondosClaseArrayList.length;
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public ImageView imageView;
public TextView textView;
public ViewHolder(#NonNull View itemView) {
super(itemView);
this.imageView = itemView.findViewById(R.id.imageView);
this.textView = itemView.findViewById(R.id.textView);
}
}
}
Then create a class where I create the method for Dialog:
public class Alertas {
private AdaptadorMenuIzq adaptadorMenuIzq;
public void AlertaMenuIzquierdoFondo(Context context){
LayoutInflater layoutInflater = LayoutInflater.from(context);
Dialog anuncio = new Dialog(context, R.style.FondoDialog);
final View view = layoutInflater.inflate(R.layout.alerta_fondo_tarjeta_cv_rv, null);
final RecyclerView rv = view.findViewById(R.id.rv_tarjetas);
FondosClase[] fondosClases = new FondosClase[]{
new FondosClase(R.drawable.permanent_bg_a, "a"),
new FondosClase(R.drawable.permanent_bg_b, "b")
};
adaptadorMenuIzq = new AdaptadorMenuIzq(fondosClases, context);
rv.setHasFixedSize(true);
rv.setLayoutManager(new LinearLayoutManager(context));
rv.setAdapter(adaptadorMenuIzq);
anuncio.setContentView(view);
anuncio.show();
}
}
And from my MainActivity I run it through a FAB:
binding.appBarMain.fab.setOnClickListener(view ->{
alertas = new Alertas();
alertas.AlertaMenuIzquierdoFondo(MainActivity.this);
}
);
When I press the button to show it I get the following error:
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
at com.frabasoft.genshinimpactrecursos.Adaptadores.AdaptadorMenuIzq.onBindViewHolder(AdaptadorMenuIzq.java:35)
The line that marks the error is the following:
holder.textView.setText(fondosClase.getNombre());
I changed it to:
holder.textView.setText(fondosClaseArrayList[position].geNombre());
But, the result was the same.
I attach the xml:
alerta_fondo_tarjeta_cv_rv:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:layout_gravity="center"
app:cardCornerRadius="75dp"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="25dp"
android:layout_marginRight="25dp"
android:layout_marginBottom="25dp"
android:layout_marginLeft="25dp"
xmlns:app="http://schemas.android.com/apk/res-auto">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/rv_tarjetas"
android:layout_marginTop="25dp"
android:layout_marginRight="25dp"
android:layout_marginBottom="25dp"
android:layout_marginLeft="25dp"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
design_rv_bg_menu_izq:
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView
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"
style="#style/CardView.Light"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="3dp"
android:elevation="5dp">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/ivIcon"
android:layout_width="120dp"
android:layout_height="120dp"
android:src="#mipmap/ic_launcher"
android:layout_margin="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/tvIcon"
android:layout_width="120dp"
android:layout_height="120dp"
android:src="#mipmap/ic_launcher"
android:layout_margin="8dp"
android:text="HOLA"
android:gravity="center"/>
</LinearLayout>
</androidx.cardview.widget.CardView>
Does someone tell me what data I'm going wrong?

in the view holder you are not passing your XML view id's
it should be:
this.imageView = itemView.findViewById(R.id.ivIcon);
this.textView = itemView.findViewById(R.id.tvIcon);

I'd like to make an internal grid view added by clicking the button on the external recyclerview

I want to make an internal grid view(room) added by clicking the button on the external recycler view(floor). but Null pointer extension occurs in onBindViewHolder. please help me
public class FloorAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements OnFloorItemClickListener {
OnFloorItemClickListener listener;
static public ArrayList<FloorData> floors;
private Context context;
private LayoutInflater layoutInflater;
private OnItemClickListener mListener = null;
public FloorAdapter(ArrayList<FloorData> floors, Context context) {
this.floors = floors;
this.context = context;
this.layoutInflater = LayoutInflater.from(context);
}
public interface OnItemClickListener{
void onItemClick(View v, int pos);
}
public void setOnItemClickListener(OnItemClickListener listener) {
this.mListener = listener ;
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = layoutInflater.inflate(R.layout.signle_floor, parent, false);
return new GridViewHolder(view);
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
((GridViewHolder)holder).recyclerView.setAdapter(new RoomAdapter(context, floors.get(position).rooms));
((GridViewHolder)holder).recyclerView.setLayoutManager(new GridLayoutManager(context, 2));
((GridViewHolder)holder).recyclerView.setHasFixedSize(true);
((GridViewHolder)holder).tvFloorNum.setText(String.valueOf(floors.get(position).floorNum));
}
#Override
public int getItemCount() {
return floors.size();
}
#Override public void onItemClick(RecyclerView.ViewHolder holder, View view, int position) {
if(listener != null){
listener.onItemClick(holder,view,position);
}
}
#Override
public int getItemViewType(int position) {
return floors.get(position).id;
}
public class GridViewHolder extends RecyclerView.ViewHolder {
RecyclerView recyclerView;
TextView tvFloorNum;
Button btnPlusRoom;
public GridViewHolder(View itemView) {
super(itemView);
recyclerView = itemView.findViewById(R.id.rvRooms);
tvFloorNum = itemView.findViewById(R.id.tvRoomNumber);
btnPlusRoom = (Button)itemView.findViewById(R.id.btnPlusRoom);
btnPlusRoom.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v)
{
int pos = getAdapterPosition();
if (pos != RecyclerView.NO_POSITION)
{
if(mListener != null){
mListener.onItemClick(v, pos);
}
}
}
});
}
}
}
public class RoomAdapter extends RecyclerView.Adapter<RoomAdapter.CustomViewHolder> {
private Context context;
private ArrayList<RoomData> rooms;
private LayoutInflater inflater;
public RoomAdapter(Context context, ArrayList<RoomData> rooms) {
this.context = context;
this.rooms = rooms;
this.inflater = LayoutInflater.from(context);
}
#Override
public CustomViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view;
view = inflater.inflate(R.layout.single_room, parent, false);
return new CustomViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull CustomViewHolder holder, int position) {
RoomData room = rooms.get(position);
holder.tvRoomNum.setText(String.valueOf(room.roomNum));
}
#Override
public int getItemCount() {
return rooms.size();
}
public static class CustomViewHolder extends RecyclerView.ViewHolder {
public TextView tvRoomNum;
public CustomViewHolder(View itemView) {
super(itemView);
tvRoomNum = (TextView) itemView.findViewById(R.id.tvRoomNumber);
}
}
}
public class RoomActivity extends AppCompatActivity {
private RecyclerView rvFloor;
private FloorAdapter floorAdapter;
public ArrayList<FloorData> globalfloors;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_room);
globalfloors = prepareData();
rvFloor = findViewById(R.id.rvFloors);
floorAdapter = new FloorAdapter(globalfloors, RoomActivity.this);
LinearLayoutManager manager = new LinearLayoutManager(RoomActivity.this);
rvFloor.setLayoutManager(manager);
rvFloor.setAdapter(floorAdapter);
floorAdapter.setOnItemClickListener(new FloorAdapter.OnItemClickListener() {
#Override
public void onItemClick(View v, int position) {
FloorData floor = globalfloors.get(position);
RoomData newRoom = new RoomData();
floor.finalRoomNum++;
newRoom.roomNum = floor.finalRoomNum;
floor.rooms.add(newRoom);
rvFloor.setAdapter(floorAdapter);
}
});
}
private ArrayList<FloorData> prepareData() {
ArrayList<FloorData> floors = new ArrayList<FloorData>();
//첫번째 subject 추가
FloorData floor1 = new FloorData();
floor1.floorNum = 1;
RoomData room101 = new RoomData();
room101.roomNum = 101;
RoomData room102 = new RoomData();
room102.roomNum = 102;
RoomData room103 = new RoomData();
room103.roomNum = 103;
floor1.finalRoomNum = 103;
floor1.rooms.add(room101);
floor1.rooms.add(room102);
floor1.rooms.add(room103);
floors.add(floor1);
FloorData floor2 = new FloorData();
floor2.floorNum = 2;
floor2.finalRoomNum = 200;
floors.add(floor2);
return floors;
}
}
activity_room
<?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"
tools:context=".tools.RewardActivity"
android:orientation="vertical">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolBar_room"
android:layout_width="match_parent"
android:layout_gravity="center"
android:layout_height="60dp"
android:background="#color/colorPrimaryDark"
app:title="호실 등록"
android:theme="#style/ToolbarTheme" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/rvFloors"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
single_floor
<?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"
android:orientation="vertical">
<LinearLayout
android:orientation="vertical"
android:background="#FFFFFF"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="15dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<TextView
android:id="#+id/tvFloorNum"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:textSize="30dp"
android:textColor="#000000" />
<Button
android:id="#+id/btnPlusRoom"
android:layout_width="40dp"
android:layout_height="40dp"
android:text="+"
android:textSize="30dp"
android:layout_marginTop="10dp"
android:background="#color/colorPrimaryDark"/>
</LinearLayout>
<androidx.recyclerview.widget.RecyclerView
android:columnCount="5"
android:id="#+id/rvRooms"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</LinearLayout>
single_room
<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="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="2dp">
<TextView
android:id="#+id/tvRoomNumber"
android:layout_width="70dp"
android:layout_height="70dp"
android:layout_marginBottom="5dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="5dp"
android:ellipsize="end"
android:singleLine="true"
android:background="#color/colorAccent"
android:gravity="center"
android:textSize="30dp"
/>
</LinearLayout>
</LinearLayout>
error message describes "java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
at com.eos.parcelnoticemanager.tools.FloorAdapter.onBindViewHolder"

The GridViewHolder inside your FloorAdapter is pointing to the wrong XML Id tag for the TextView that's why it's throwing NullPointerException
Change this in your GridViewHolder
tvFloorNum = itemView.findViewById(R.id.tvRoomNumber);
to this
tvFloorNum = itemView.findViewById(R.id.tvFloorNumber);
Then it should work

RecyclerView inside a ViewPager inside another RecyclerView not scrolling

I'm trying to make a user profile like Vine/Instagram. I have profile fragment and inside that I have a RecyclerView containing two different ViewHolders. One of them is the header (user's profile picture, username, etc.) and the other one is a TabLayout and ViewPager.
ProfileAdapter.java
private static final int TYPE_HEADER = 1;
private static final int TYPE_PAGER = 2;
private Context mContext;
private FragmentManager mFragmentManager;
public ProfileAdapter(Context context, FragmentManager fragmentManager) {
this.mContext = context;
this.mFragmentManager = fragmentManager;
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
RecyclerView.ViewHolder viewHolder;
LayoutInflater inflater = LayoutInflater.from(mContext);
if (viewType == TYPE_HEADER) {
View view = inflater.inflate(R.layout.layout_profile_header, parent, false);
viewHolder = new ProfileHeaderViewHolder(view);
} else {
View view = inflater.inflate(R.layout.layout_profile_view_pager, parent, false);
viewHolder = new ProfileViewPagerViewHolder(view);
}
return viewHolder;
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
if (holder instanceof ProfileHeaderViewHolder) {
} else if (holder instanceof ProfileViewPagerViewHolder) {
((ProfileViewPagerViewHolder) holder).viewPager
.setAdapter(new ProfileViewPagerViewHolder.ProfilePagerAdapter(mFragmentManager));
}
}
#Override
public int getItemViewType(int position) {
if (position == 0) {
return TYPE_HEADER;
} else {
return TYPE_PAGER;
}
}
#Override
public int getItemCount() {
return 2;
}
ProfileHeaderViewHolder.java
public class ProfileHeaderViewHolder extends RecyclerView.ViewHolder {
private CircleImageView profilePic;
private TextView nameText;
private TextView bioText;
private TextView urlText;
private TextView postsCountText;
private TextView followersCountText;
private TextView followingsCountText;
private TabLayout tabLayout;
public ProfileHeaderViewHolder(View itemView) {
super(itemView);
profilePic = (CircleImageView) itemView.findViewById(R.id.iv_profile_pic);
nameText = (TextView) itemView.findViewById(R.id.tv_name);
urlText = (TextView) itemView.findViewById(R.id.tv_url);
bioText = (TextView) itemView.findViewById(R.id.tv_bio);
postsCountText = (TextView) itemView.findViewById(R.id.tv_posts);
followersCountText = (TextView) itemView.findViewById(R.id.tv_followers);
followingsCountText = (TextView) itemView.findViewById(R.id.tv_followings);
}
}
ProfileViewPagerViewHolder.java
public class ProfileViewPagerViewHolder extends RecyclerView.ViewHolder {
public TabLayout tabLayout;
public ViewPager viewPager;
public ProfileViewPagerViewHolder(View itemView) {
super(itemView);
tabLayout = (TabLayout) itemView.findViewById(R.id.tab_layout);
viewPager = (ViewPager) itemView.findViewById(R.id.vp_profile);
tabLayout.addTab(tabLayout.newTab().setText("Posts"));
tabLayout.addTab(tabLayout.newTab().setText("Dares"));
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
public static class ProfilePagerAdapter extends FragmentPagerAdapter {
public ProfilePagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new ProfilePostsFragment();
case 1:
return new ProfileDaresFragment();
default:
return null;
}
}
#Override
public int getCount() {
return 2;
}
}
}
I'm not sure if this is a good way to obtain what I'm trying to achieve. I want the user to be able to switch between two options inside the user profile fragment.
fragment_profile.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<android.support.v7.widget.RecyclerView
android:id="#+id/rv_profile"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
layout_profile_view_pager.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">
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#color/colorGreyLight" />
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/white"
app:tabGravity="fill"
app:tabMode="fixed" />
<android.support.v4.view.ViewPager
android:id="#+id/vp_profile"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
Most of what I've done so far seems to work and the only problem I'm encountering is that I can see the first item but I cannot scroll down further to see the remaining items in the rv_profile_posts RecyclerView.
Any help would be much appreciated.

please set touch listener on RecyclerView in this case
yourRecyclerview.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
v.getParent().requestDisallowInterceptTouchEvent(true);
return false;
}
});

Why your using recyclerView?
You can use the coordinatorLayout
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/header_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:orientation="vertical"
android:visibility="visible"
app:layout_scrollFlags="scroll|enterAlways|snap">
<!-- put your header widget here -->
</LinearLayout>
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/white"
app:tabGravity="fill"
app:tabMode="fixed" />
<View
android:layout_width="match_parent"
android:layout_height="#dimen/_1dp"
android:background="#color/line_color" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v4.view.ViewPager
android:id="#+id/vp_profile"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>

Kotlin :
Faced the same issue, try adding this:-
columnRecyclerView.setOnTouchListener { v, event ->
v.parent.requestDisallowInterceptTouchEvent(true)
false
}
this will disable the scrolling of your viewpager but enable recyclerview scroll.

Gridview adapter images with title name for images group

I have a gridView witch contains a group of images with two columns, what I want to do is to put a title for a group of images.
Now I can do that but the problem that title is that the title is only in one column and the second column is always empty, how can I put the title in the two columns?
Here is my adapter:
public class MultimediaPhotosAdapter extends BaseAdapter {
private Context mContext;
private List<ImagesDto> imagesDto = new ArrayList<ImagesDto>();
ImagesFlickrDto imagesFlickrDto;
final String formatImage = ImagesNameFormat.FORMAT_IMAGE_DEFAULT.getImagesNameFormat();
ImagesFormatsDto currentImageFormatToDisplay;
GridView gridViewImages;
public MultimediaPhotosAdapter(Context context, GridView gridViewImages) {
this.gridViewImages = gridViewImages;
this.mContext = context;
}
#Override
public int getCount() {
return imagesDto.size();
}
#Override
public Object getItem(int position) {
return imagesDto.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View itemView = null;
HolderElementGridView holderElementGridView;
ImagesDto currentImage = imagesDto.get(position);
if(convertView == null) {
holderElementGridView = new HolderElementGridView();
itemView = View.inflate(mContext,R.layout.item_multimedia_photo,null);
holderElementGridView.image = (NetworkImageView) itemView.findViewById(R.id.imageView);
holderElementGridView.title = (TextView) itemView.findViewById(R.id.title);
itemView.setTag(holderElementGridView);
}
else {
itemView = convertView;
holderElementGridView = (HolderElementGridView)itemView.getTag();
}
if(imagesDto.get(position).isFirstElementOfCategorie()){
holderElementGridView.image.setVisibility(View.GONE);
holderElementGridView.title.setVisibility(View.VISIBLE);
holderElementGridView.title.setText(currentImage.getTitle());
}
else if(imagesDto.get(position).getUrl()!=null){
holderElementGridView.image.setVisibility(View.VISIBLE);
holderElementGridView.title.setVisibility(View.GONE);
holderElementGridView.image.setImageUrl(StringFormat.getUrlImage(mContext, currentImage.getUrl(), currentImageFormatToDisplay.getSuffix(), currentImageFormatToDisplay.getExtension()),VolleySingleton.getInstance(mContext).getImageLoader());
holderElementGridView.image.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
DrawerLayoutInterface screenInterface=(DrawerLayoutInterface)mContext;
if(screenInterface!=null)
screenInterface.showDiaporama(imagesFlickrDto,position);
}
});
}
// column near title is empty
else{
holderElementGridView.image.setVisibility(View.VISIBLE);
holderElementGridView.title.setVisibility(View.GONE);
}
return itemView;
}
public void update(ImagesFlickrDto imagesFlickrDto){
this.imagesFlickrDto = imagesFlickrDto;
this.imagesDto = imagesFlickrDto.getListImages();
AdministrerImagesSA administrerImages = new AdministrerImagesSAImpl();
currentImageFormatToDisplay = administrerImages.getFormatByProriete(imagesFlickrDto.getImagesFormatsDto(), formatImage);
}
class HolderElementGridView{
NetworkImageView image;
TextView title;
}
}
item_multimedia_photo.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:geekui="http://schemas.android.com/apk/res-auto"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<com.netcosports.anderlecht.activity.utils.TypefaceTextView
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="#dimen/text_size_item_menu"
android:visibility="gone"
android:layout_marginLeft="5dp"
geekui:customTypeface="fonts/DIN-Regular.otf" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<com.android.volley.toolbox.NetworkImageView
android:id="#+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginRight="5dp"
android:layout_marginLeft="5dp"
android:src="#drawable/ic_launcher" >
</com.android.volley.toolbox.NetworkImageView>
</LinearLayout>
</LinearLayout>

Cant display listview in AlertDialog android

I want to display ArrayList of object in AlertDialog but my list view dont show. Here is my code.
public class PrzystanekDialog extends DialogFragment {
private ListView trasaPrzejazdu;
private ArrayList<Linia> trasaPrzejazduList;
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the Builder class for convenient dialog construction
LayoutInflater inflater = getActivity().getLayoutInflater();
final View rootView = inflater.inflate(R.layout.dialog_layout, null);
//ustawienie lisview z wygenerowaną linia
trasaPrzejazduList = getArguments().getParcelableArrayList("linia");
trasaPrzejazdu = (ListView) rootView.findViewById(R.id.trasaListView);
final ArrayAdapter<Linia> adapter = new ArrayAdapter<Linia>(getActivity(),R.layout.listbox_dialog_element, trasaPrzejazduList);
trasaPrzejazdu.setAdapter(adapter);
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
final ViewPager mViewPager;
mViewPager = (ViewPager) getActivity().findViewById(R.id.pager);
builder.setView(inflater.inflate(R.layout.dialog_layout, null));
//getActivity().setContentView(inflater.inflate(R.layout.dialog_layout, null));
builder.setMessage(R.string.choose)
.setPositiveButton(R.string.start_trip, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
mViewPager.setCurrentItem(1);
}
})
.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Toast.makeText(getActivity().getApplicationContext(), "Anulowano podróż.", Toast.LENGTH_LONG).show();
}
});
return builder.create();
}
}
Here is my ArrayAdapter
public class DialogListAdapter extends BaseAdapter {
private List<Linia> listData;
private LayoutInflater layoutInflater;
public DialogListAdapter(Context context, List<Linia> listData) {
this.listData = listData;
layoutInflater = LayoutInflater.from(context);
}
#Override
public int getCount() {
return listData.size();
}
#Override
public Linia getItem(int position) {
return listData.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = layoutInflater.inflate(R.layout.listbox_dialog_element, null);
holder = new ViewHolder();
holder.start = (TextView) convertView.findViewById(R.id.przystanekStartowy);
holder.end = (TextView) convertView.findViewById(R.id.przystanekDocelowy);
holder.vehicleImage = (ImageView) convertView.findViewById(R.id.line_image);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
//listData.get(position).getHeadline()
if(listData.get(position).getTypLini().toString() == "bus")
holder.vehicleImage.setImageResource(R.drawable.autobus_ico);
else
holder.vehicleImage.setImageResource(R.drawable.tram_ico);
holder.start.setText(listData.get(position).getStopPrzystanki().get(0).getNazwa_przystanku());
holder.end.setText(listData.get(position).getStopPrzystanki().get(listData.get(position).getStopPrzystanki().size()-1).getNazwa_przystanku());
return convertView;
}
static class ViewHolder {
ImageView vehicleImage;
TextView start;
TextView end;
}
}
And here is my xml file
<?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="vertical" >
<ListView
android:id="#+id/trasaListView"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
I have no compile errors. Thank you very much for help.
EDIT:
<?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="vertical" >
<ImageView
android:id="#+id/line_image"
android:layout_width="50dip"
android:layout_height="50dip"
android:src="#drawable/autobus_ico"
android:layout_marginLeft="5dip"/>
<TextView
android:id="#+id/przystanekStartowy"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textStyle="bold"
android:typeface="sans"
android:layout_marginLeft="60dip"/>
<TextView
android:id="#+id/przystanekDocelowy"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dip"
android:text=""
android:textColor="#343434"
android:textSize="12sp"
android:layout_marginLeft="60dip"/>
</LinearLayout>