I have set of different buttons in my list view:
This is my app:
MyBottomSheetDialogFragment:
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.design.widget.BottomSheetDialogFragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import java.util.ArrayList;
import java.util.List;
/**
* Created by sasank on 26-11-2016.
*/
public class MyBottomSheetDialogFragment extends BottomSheetDialogFragment {
String mString;
private RecyclerView mRecyclerView;
private VerticalListAdapter mVerticalListAdapter;
static MyBottomSheetDialogFragment newInstance(String string) {
MyBottomSheetDialogFragment f = new MyBottomSheetDialogFragment();
Bundle args = new Bundle();
args.putString("string", string);
f.setArguments(args);
return f;
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mString = getArguments().getString("string");
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.bottom_sheet_modal_list, container, false);
mRecyclerView = (RecyclerView) v.findViewById(R.id.recycler_view);
return v;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
List<Model> list = new ArrayList<Model>();
list.add(new Model(R.drawable.ic_call_black_24dp, "Call"));
list.add(new Model(R.drawable.ic_chat_black_24dp, "Chat"));
list.add(new Model(R.drawable.ic_android_black_24dp, "Android"));
list.add(new Model(R.drawable.ic_location_on_black_24dp, "Location"));
list.add(new Model(R.drawable.ic_call_black_24dp, "Call"));
list.add(new Model(R.drawable.ic_chat_black_24dp, "Chat"));
list.add(new Model(R.drawable.ic_android_black_24dp, "Android"));
list.add(new Model(R.drawable.ic_location_on_black_24dp, "Location"));
mVerticalListAdapter = new VerticalListAdapter(getContext(), list);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false);
mRecyclerView.setLayoutManager(linearLayoutManager);
mRecyclerView.setAdapter(mVerticalListAdapter);
}
}
My verticalListAdapter.
package com.example.user.bottomsheet_android;
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.List;
public class VerticalListAdapter extends RecyclerView.Adapter<VerticalListAdapter.MyViewHolder>{
private Context mContext;
private List<Model> mModelList;
public VerticalListAdapter(Context context, List<Model> list) {
this.mContext = context;
this.mModelList = list;
}
#Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.modal_list_item, parent, false);
return new MyViewHolder(itemView);
}
#Override
public void onBindViewHolder(MyViewHolder holder, int position) {
holder.txtView.setText(mModelList.get(position).getName());
holder.imgView.setImageDrawable(mContext.getResources().getDrawable(mModelList.get(position).getImgId()));
}
#Override
public int getItemCount()
{
return mModelList.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView txtView;
public ImageView imgView;
public MyViewHolder(View view) {
super(view);
txtView = (TextView) view.findViewById(R.id.txtView);
imgView = (ImageView) view.findViewById(R.id.imgView);
}
}
}
My goal is to add function for each button that is showed in the bottom sheet.
For any clarification please leave a comment.
In your onBindViewHolder method, I would put an onClickListener, and then use either a switch-case structure or several different if-elseif statements. For example, the switch-case would look something like:
holder.txtView.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
switch (holder.getAdapterPosition()) {
case 1:
// do call related things here
.
.
.
break;
case 2:
// do chat related things here
.
.
.
break;
}
}
}
and so on. You could implement something similar with if statements
Related
My scrolling list is displaying properly.
OnBindViewHolder is called for each item in initial display and when scrolling brings new items into view.
When I click on an item, I do see my ItemDetailsLookup and getItemDetails functions getting called, HOWEVER it doesn't call the OnBindViewHolder, and so setActivated isn't getting run.
The documentation for androidx.recyclerview.selection says "... When the user selects an item the library will record that in SelectionTracker then notify RecyclerView that the state of the item has changed. This will ultimately cause the value to be rebound by way of RecyclerView.Adapter#onBindViewHolder..." and I think I've done everything up to this point, but I must have missed something...
Any ideas?
Thanks
Here's my fragment:
package com.example.smartflashcards;
import android.content.Context;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.selection.ItemDetailsLookup;
import androidx.recyclerview.selection.SelectionPredicates;
import androidx.recyclerview.selection.SelectionTracker;
import androidx.recyclerview.selection.StableIdKeyProvider;
import androidx.recyclerview.selection.StorageStrategy;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class StackSelectionFragment extends Fragment {
private static final String ARG_COLUMN_COUNT = "column-count";
private int mColumnCount = 1;
static SelectionTracker<Long> tracker;
public StackSelectionFragment() {
}
#SuppressWarnings("unused")
public static StackSelectionFragment newInstance(int columnCount) {
StackSelectionFragment fragment = new StackSelectionFragment();
Bundle args = new Bundle();
args.putInt(ARG_COLUMN_COUNT, columnCount);
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mColumnCount = getArguments().getInt(ARG_COLUMN_COUNT);
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_stack_selection_list, container, false);
File directory = getActivity().getFilesDir();
List<String> filesList = new ArrayList(Arrays.asList(directory.list()));
if (view instanceof RecyclerView) {
Context context = view.getContext();
RecyclerView recyclerView = (RecyclerView) view;
if (mColumnCount <= 1) {
recyclerView.setLayoutManager(new LinearLayoutManager(context));
} else {
recyclerView.setLayoutManager(new GridLayoutManager(context, mColumnCount));
}
recyclerView.setAdapter(new MyItemRecyclerViewAdapter(filesList));
recyclerView.getAdapter().hasStableIds();
this.tracker = new SelectionTracker.Builder<Long>(
"stack_selector",
recyclerView,
new StableIdKeyProvider(recyclerView),
new MyDetailsLookup(recyclerView),
StorageStrategy.createLongStorage()
).withSelectionPredicate(SelectionPredicates.<Long>createSelectAnything()).build();
}
return view;
}
final class MyDetailsLookup extends ItemDetailsLookup {
private final RecyclerView mRecyclerView;
MyDetailsLookup(RecyclerView recyclerView) {
mRecyclerView = recyclerView;
}
public #Nullable
ItemDetails getItemDetails(#NonNull MotionEvent e) {
View view = mRecyclerView.findChildViewUnder(e.getX(), e.getY());
if (view != null) {
RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(view);
if (holder instanceof MyItemRecyclerViewAdapter.ViewHolder) {
return ((MyItemRecyclerViewAdapter.ViewHolder)holder).getItemDetails();
}
}
return null;
}
}
}
Here's my adapter:
package com.example.smartflashcards;
import androidx.annotation.Nullable;
import androidx.recyclerview.selection.ItemDetailsLookup;
import androidx.recyclerview.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.widget.TextView;
import com.example.smartflashcards.databinding.FragmentStackSelectionBinding;
import java.util.List;
public class MyItemRecyclerViewAdapter extends RecyclerView.Adapter<MyItemRecyclerViewAdapter.ViewHolder> {
private final List<String> mValues;
public MyItemRecyclerViewAdapter(List<String> items) {
setHasStableIds(true);
mValues = items;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new ViewHolder(FragmentStackSelectionBinding.inflate(LayoutInflater.from(parent.getContext()), parent, false));
}
#Override
public void onBindViewHolder(final ViewHolder holder, int position) {
holder.mItem = getItemId(position);
holder.mContentView.setText(mValues.get(position));
holder.mContentView.setActivated(StackSelectionFragment.tracker.isSelected((long) position));
}
#Override
public int getItemCount() {
return mValues.size();
}
#Override
public long getItemId(int position) {
return (long)position;
}
public class ViewHolder extends RecyclerView.ViewHolder {
public final TextView mIdView;
public final TextView mContentView;
public Long mItem;
public ViewHolder(FragmentStackSelectionBinding binding) {
super(binding.getRoot());
mIdView = binding.itemNumber;
mContentView = binding.content;
}
#Override
public String toString() {
return super.toString() + " '" + mContentView.getText() + "'";
}
public ItemDetailsLookup.ItemDetails<Long> getItemDetails() {
return new ItemDetailsLookup.ItemDetails<Long>() {
#Override
public int getPosition() {
return getAbsoluteAdapterPosition();
}
#Nullable
#Override
public Long getSelectionKey() {
return mItem;
}
};
}
}
}
By following the example at https://github.com/Thumar/recyclerview-selection/tree/master/app
I was able to get it working. See my working code below.
But I still don't know which of the changes made it work and why.
If anyone figures out what was causing my problem, please post a comment or answer.
Any and all other feedback is welcome as well.
THANKS
Here's my new fragment:
package com.example.smartflashcards;
import android.content.Context;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.selection.ItemDetailsLookup;
import androidx.recyclerview.selection.Selection;
import androidx.recyclerview.selection.SelectionPredicates;
import androidx.recyclerview.selection.SelectionTracker;
import androidx.recyclerview.selection.StableIdKeyProvider;
import androidx.recyclerview.selection.StorageStrategy;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class StackSelectionFragment extends Fragment {
// TODO: Customize parameter argument names
private static final String ARG_COLUMN_COUNT = "column-count";
// TODO: Customize parameters
private int mColumnCount = 1;
SelectionTracker<Long> tracker; //TODO: add private?
private StackSelectionListener listener;
public interface StackSelectionListener {
public void onSelectStack(String stack);
}
String selections = "";
/**
* Mandatory empty constructor for the fragment manager to instantiate the
* fragment (e.g. upon screen orientation changes).
*/
public StackSelectionFragment() {
}
// TODO: Customize parameter initialization
#SuppressWarnings("unused")
public static StackSelectionFragment newInstance(int columnCount) {
StackSelectionFragment fragment = new StackSelectionFragment();
Bundle args = new Bundle();
args.putInt(ARG_COLUMN_COUNT, columnCount);
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mColumnCount = getArguments().getInt(ARG_COLUMN_COUNT);
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_stack_selection_list, container, false);
File directory = getActivity().getFilesDir();
List<String> filesList = new ArrayList(Arrays.asList(directory.list()));
// Set the adapter
if (view instanceof RecyclerView) {
Context context = view.getContext();
RecyclerView recyclerView = (RecyclerView) view;
if (mColumnCount <= 1) {
recyclerView.setLayoutManager(new LinearLayoutManager(context));
} else {
recyclerView.setLayoutManager(new GridLayoutManager(context, mColumnCount));
}
MyItemRecyclerViewAdapter adapter = new MyItemRecyclerViewAdapter(filesList);
recyclerView.setAdapter(adapter);
adapter.hasStableIds();
this.tracker = new SelectionTracker.Builder<Long>(
"stack_selector",
recyclerView,
new StableIdKeyProvider(recyclerView),
new MyDetailsLookup(recyclerView),
StorageStrategy.createLongStorage()
).withSelectionPredicate(SelectionPredicates.<Long>createSelectAnything()).build();
adapter.injectTracker(this.tracker);
SelectionTracker.SelectionObserver<Long> observer = new SelectionTracker.SelectionObserver<Long>() {
#Override
public void onSelectionChanged() {
super.onSelectionChanged();
//TODO: replace this placeholder action with something useful
selections = "";
tracker.getSelection().forEach(item -> selections += adapter.getContent(item.intValue()));//selections += item);
//listener.onSelectStack("selections"); //This causes an error???
Context context = getContext();
Toast toast = Toast.makeText(context, selections, Toast.LENGTH_LONG);
toast.show();
}
};
this.tracker.addObserver(observer);
}
return view;
}
final class MyDetailsLookup extends ItemDetailsLookup {
private final RecyclerView mRecyclerView;
MyDetailsLookup(RecyclerView recyclerView) {
mRecyclerView = recyclerView;
}
public #Nullable
ItemDetails getItemDetails(#NonNull MotionEvent e) {
View view = mRecyclerView.findChildViewUnder(e.getX(), e.getY());
if (view != null) {
RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(view);
if (holder instanceof MyItemRecyclerViewAdapter.ViewHolder) {
return ((MyItemRecyclerViewAdapter.ViewHolder)holder).getItemDetails();
}
}
return null;
}
}
Here's my new adapter:
package com.example.smartflashcards;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.recyclerview.selection.ItemDetailsLookup;
import androidx.recyclerview.selection.SelectionTracker;
import androidx.recyclerview.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.util.List;
public class MyItemRecyclerViewAdapter extends RecyclerView.Adapter<MyItemRecyclerViewAdapter.ViewHolder> {
private final List<String> mValues;
private SelectionTracker<Long> selectionTracker;
public MyItemRecyclerViewAdapter(List<String> items) {
setHasStableIds(true); //TODO: remove redundancy between this and "recyclerView.getAdapter().hasStableIds()" in the Fragment
mValues = items;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.fragment_stack_selection, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull ViewHolder holder, int position) {
String item = this.mValues.get(position);
holder.bind(item, selectionTracker.isSelected((long) position));
}
#Override
public int getItemCount() {
return mValues.size();
}
#Override
public long getItemId(int position) {
return (long)position;
}
public String getContent(int position) {
return mValues.get(position);
}
public void injectTracker(SelectionTracker<Long> tracker)
{
this.selectionTracker = tracker;
}
public class ViewHolder extends RecyclerView.ViewHolder {
public final TextView mContentView;
public ViewHolder(#NonNull View itemView) {
super(itemView);
mContentView = itemView.findViewById(R.id.content);
}
#Override
public String toString() {
return super.toString() + " '" + mContentView.getText() + "'";
}
public void bind(String item, Boolean activate) {
this.mContentView.setText(item);
itemView.setActivated(activate); //TODO: understand how "itemView" exists outside of the constructor
}
public ItemDetailsLookup.ItemDetails<Long> getItemDetails() {
return new ItemDetailsLookup.ItemDetails<Long>() {
#Override
public int getPosition() {
return getAbsoluteAdapterPosition();
}
#Nullable
#Override
public Long getSelectionKey() {
return (long) getAbsoluteAdapterPosition();
}
};
}
}
}
It's a chatting application where i only wanted to display the users from database those whose numbers are available on the users device contact list.
I have got the list of contact list but i don't know how to query the database or i even tried a work around where it displays the user information who are present but those who are not present it shows a default itemview. You can check image link for reference
package com.example.myapplication;
import android.database.Cursor;
import android.graphics.Color;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.firebase.ui.firestore.FirestoreRecyclerAdapter;
import com.firebase.ui.firestore.FirestoreRecyclerOptions;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.firestore.Query;
import com.squareup.picasso.Picasso;
import java.util.ArrayList;
/**
* A simple {#link Fragment} subclass.
* Use the {#link Fragment1#newInstance} factory method to
* create an instance of this fragment.
*/
public class Fragment1 extends Fragment {
private FirebaseFirestore firebaseFirestore;
LinearLayoutManager linearLayoutManager;
private FirebaseAuth firebaseAuth;
ImageView imageViewOfUser;
FirestoreRecyclerAdapter<firebasemodel, NoteViewHolder> chatAdapter;
RecyclerView recyclerView;
ArrayList<String> contactList;
ArrayList<String> getcontactList;
public Fragment1() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_1, container, false);
firebaseAuth = FirebaseAuth.getInstance();
firebaseFirestore = FirebaseFirestore.getInstance();
recyclerView = view.findViewById(R.id.recyclerview);
contactList = new ArrayList<String>();
getcontactList = getContactList();
Query query = firebaseFirestore.collection("Users").whereNotEqualTo("uid", firebaseAuth.getUid());
FirestoreRecyclerOptions<firebasemodel> allusername = new FirestoreRecyclerOptions.Builder<firebasemodel>().setQuery(query, firebasemodel.class).build();
chatAdapter = new FirestoreRecyclerAdapter<firebasemodel, NoteViewHolder>(allusername) {
#Override
protected void onBindViewHolder(#NonNull NoteViewHolder noteViewHolder, int i, #NonNull firebasemodel firebasemodel) {
for (String m : getcontactList) {
if (firebasemodel.getContact().equals(m)) {
noteViewHolder.particularusername.setText(firebasemodel.getName());
String uri = firebasemodel.getImage();
Picasso.get().load(uri).into(imageViewOfUser);
if (firebasemodel.getStatus().equals("Online")) {
noteViewHolder.statusofuser.setText(firebasemodel.getStatus());
noteViewHolder.statusofuser.setTextColor(Color.rgb(66, 133, 244));
} else {
noteViewHolder.statusofuser.setText(firebasemodel.getStatus());
}
noteViewHolder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getActivity(), "Clicked on particular user", Toast.LENGTH_SHORT).show();
}
});
} else {
//else code?
}
}
}
#NonNull
#Override
public NoteViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.chatviewlayout, parent, false);
return new NoteViewHolder(view);
}
};
recyclerView.setHasFixedSize((true));
linearLayoutManager = new LinearLayoutManager(getContext());
linearLayoutManager.setOrientation(RecyclerView.VERTICAL);
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setAdapter(chatAdapter);
return view;
}
public class NoteViewHolder extends RecyclerView.ViewHolder{
private TextView particularusername;
private TextView statusofuser;
public NoteViewHolder(#NonNull View itemView) {
super(itemView);
particularusername = itemView.findViewById(R.id.nameofuser);
statusofuser = itemView.findViewById(R.id.statusofuser);
imageViewOfUser = itemView.findViewById(R.id.imageviewofuser);
}
}
//-----------------------------------------------------------------------------------------------//
#Override
public void onStart() {
super.onStart();
chatAdapter.startListening();
}
#Override
public void onStop() {
super.onStop();
if(chatAdapter!=null){
chatAdapter.stopListening();
}
}
//-----------------------------------------------------------------------------------------//
private ArrayList<String> getContactList(){
Cursor phones = getActivity().getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,null,null,null);
while (phones.moveToNext()){
String phone = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NORMALIZED_NUMBER));
contactList.add(phone);
}
return contactList;
}
}
Good day,
I am trying to display RecyclerView in the fragment of the app. But every time I run the app it crashes. As I understand there is a problem that teamList is on MainActivity and I need to take everything related to teamList to onCreate method at KomandosFragment. But every time I try to do it it just does not work.
Any help would be appreciated.
EDIT: Full code in GitHub https://github.com/Kirkoglu/Meginimas
Main Activity:
package com.anzelmasfile.meginimas;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.content.ContextCompat;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.viewpager2.widget.ViewPager2;
import android.os.Bundle;
import com.google.android.material.badge.BadgeDrawable;
import com.google.android.material.tabs.TabLayout;
import com.google.android.material.tabs.TabLayoutMediator;
public class MainActivity extends AppCompatActivity {
RecyclerView teamList;
String s1[], s2[];
int images[] = {R.drawable.gargzdai, R.drawable.jonava, R.drawable.joniskis, R.drawable.kaunas,
R.drawable.klaipeda, R.drawable.marijampole, R.drawable.mazeikiai, R.drawable.moletai,
R.drawable.palanga, R.drawable.sakiai, R.drawable.silale, R.drawable.silute,
R.drawable.taurage, R.drawable.telsiai, R.drawable.vilnius};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//
// teamList = findViewById(R.id.teamList);
// s1 = getResources().getStringArray(R.array.komandos);
// s2 = getResources().getStringArray(R.array.treneriai);
//
// KomandosAdapter komandosAdapter = new KomandosAdapter(this, s1, s2, images);
//
// teamList.setAdapter(komandosAdapter);
// teamList.setLayoutManager(new LinearLayoutManager(this));
ViewPager2 viewPager2 = findViewById(R.id.viewPager);
viewPager2.setAdapter(new OrdersPagerAdapter(this));
final TabLayout tabLayout = findViewById(R.id.tabLayout);
TabLayoutMediator tabLayoutMediator = new TabLayoutMediator(tabLayout, viewPager2, new TabLayoutMediator.TabConfigurationStrategy() {
#Override
public void onConfigureTab(#NonNull TabLayout.Tab tab, int position) {
switch (position) {
case 0: {
tab.setText("Pradinis");
tab.setIcon(R.drawable.pradinis);
break;
}
case 1: {
tab.setText("Komandos");
tab.setIcon(R.drawable.komandos);
break;
}
case 2: {
tab.setText("Tvarkaraštis");
tab.setIcon(R.drawable.tvarkarastis);
break;
}
case 3: {
tab.setText("Rezultatai");
tab.setIcon(R.drawable.rezultatai);
break;
}
case 4: {
tab.setText("Lentelė");
tab.setIcon(R.drawable.lentele);
break;
}
}
}
});
tabLayoutMediator.attach();
}
}
KomandosAdapter:
package com.anzelmasfile.meginimas;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
public class KomandosAdapter extends RecyclerView.Adapter<KomandosAdapter.KomandosViewHolder> {
String data1[], data2[];
int images[];
Context context;
public KomandosAdapter(Context ct, String s1[], String s2[], int img[]) {
context = ct;
data1 = s1;
data2 = s2;
images = img;
}
#NonNull
#Override
public KomandosViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(context);
View view = inflater.inflate(R.layout.item_komandos, parent, false);
return new KomandosViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull KomandosViewHolder holder, int position) {
holder.myText1.setText(data1[position]);
holder.myText2.setText(data2[position]);
holder.myImage.setImageResource(images[position]);
}
#Override
public int getItemCount() {
return 15;
}
public static class KomandosViewHolder extends RecyclerView.ViewHolder {
TextView myText1, myText2;
ImageView myImage;
KomandosViewHolder(#NonNull View itemView) {
super(itemView);
myText1 = itemView.findViewById(R.id.teamName);
myText2 = itemView.findViewById(R.id.teamCoach);
myImage = itemView.findViewById(R.id.teamLogo);
}
}
}
KomandosFragment:
package com.anzelmasfile.meginimas;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
/**
* A simple {#link Fragment} subclass.
*/
public class KomandosFragment extends Fragment {
public KomandosFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_komandos, container, false);
}
}
Following this guide, I tried implementing RecycleView into Fragments. I got the error
E/RecyclerView: No adapter attached; skipping layout
The recycle view don't display anything
I tried
recyclerview No adapter attached; skipping layout
RecyclerView in Fragment : No adapter attached skipping layout
and many more.
My Code:
package com.example.celebrity_proper;
import android.content.Context;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.DefaultItemAnimator;
import androidx.recyclerview.widget.DividerItemDecoration;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.util.ArrayList;
/**
* A simple {#link Fragment} subclass.
*/
public class MainFragment extends Fragment {
private RecyclerView choiceRecycleView2 = null;
private ChoiceAdapter adapter = null;
private ArrayList<Choice> choiceArrayList;
public MainFragment() {
// Required empty public constructor
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Log.d("Go here", "41");
View view = inflater.inflate(R.layout.fragment_main, container, false);
choiceRecycleView2 = view.findViewById(R.id.choiceRecycleView);
choiceRecycleView2.setLayoutManager(new LinearLayoutManager(getActivity()));
choiceArrayList = new ArrayList<>();
adapter = new ChoiceAdapter(getActivity(), choiceArrayList);
choiceRecycleView2.setAdapter(adapter);
createListData();
return view;
}
public void createListData() {
Choice choice = new Choice("Adolf Hitler");
choiceArrayList.add(choice);
choice = new Choice("Kim Jong Un");
Log.d("Item Count", String.valueOf(adapter.getItemCount()));
choiceArrayList.add(choice);
adapter.notifyDataSetChanged();
}
}
class Choice {
private String name;
public Choice(String name) {
this.name = name;
}
public String getName() {
return this.name;
}
}
class ChoiceAdapter extends RecyclerView.Adapter<ChoiceViewHolder> {
private Context context;
private ArrayList<Choice> choices;
public ChoiceAdapter(Context context, ArrayList<Choice> choices) {
this.context = context;
this.choices = choices;
}
#NonNull
#Override
public ChoiceViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.choice_row, parent, false);
return new ChoiceViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull ChoiceViewHolder holder, int position) {
Choice choice = choices.get(position);
holder.setDetails(choice);
}
#Override
public int getItemCount() {
return choices.size();
}
}
class ChoiceViewHolder extends RecyclerView.ViewHolder {
private TextView choice_row_text;
public ChoiceViewHolder(View view) {
super(view);
choice_row_text = view.findViewById(R.id.choice_row_text);
}
public void setDetails(Choice choice) {
choice_row_text.setText(choice.getName());
}
}
You are sending empty list to adapter constructor. Right Way
choiceRecycleView2 = view.findViewById(R.id.choiceRecycleView);
choiceRecycleView2.setLayoutManager(new LinearLayoutManager(getActivity()));
choiceArrayList = new ArrayList<>();
createListData();
adapter = new ChoiceAdapter(getActivity(), choiceArrayList);
choiceRecycleView2.setAdapter(adapter);
adapter.notifyDataSetChanged();
public void createListData() {
Choice choice = new Choice("Adolf Hitler");
choiceArrayList.add(choice);
choice = new Choice("Kim Jong Un");
Log.d("Item Count", String.valueOf(adapter.getItemCount()));
choiceArrayList.add(choice);
}
Give Orientation to LayoutManager.
Sample Code.
LinearLayoutManager manager = new LinearLayoutManager(this);
managersetOrientation(LinearLayoutManager.VERTICAL);
list.setLayoutManager(manager);
choiceRecycleView2.setAdapter( adapter );
So apparently it is an issue with AMD processor. I can't prove it since I am kicked from that class, I finished that class 2 months ago
I try to passing data from cardview when clicked to DetailFragment, in this case I try to use interface in my adapter, but I get an error a null object reference in mOnItemClickListener.onClick(i).
I try to passing data from cardview when clicked to DetailFragment, in this case I try to use interface in my adapter.
I want to passing data to DetailMoviesFragment Class.
this is my CardviewMovieAdapter Class
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.bumptech.glide.Glide;
import com.bumptech.glide.request.RequestOptions;
import java.util.ArrayList;
public class CardviewMovieAdapter extends RecyclerView.Adapter<CardviewMovieAdapter.CardViewViewHolder> {
private ArrayList<Movie> listMovie;
Context context;
OnItemClickListener mOnItemClickListener;
public void setListMovie(ArrayList<Movie> listMovie) {
this.listMovie = listMovie;
}
public ArrayList<Movie> getListMovie() {
return listMovie;
}
public interface OnItemClickListener {
void onClick(int position);
}
public void setOnItemClickListener(final OnItemClickListener mItemClickListener) {
this.mOnItemClickListener = mItemClickListener;
}
public CardviewMovieAdapter(ArrayList<Movie> listMovie, Context context) {
this.listMovie = listMovie;
this.context = context;
}
#NonNull
#Override
public CardviewMovieAdapter.CardViewViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_movie, viewGroup,false);
return new CardViewViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull final CardviewMovieAdapter.CardViewViewHolder cardViewViewHolder, final int i) {
final Movie movie = listMovie.get(i);
Glide.with(cardViewViewHolder.itemView.getContext())
.load(movie.getImageMovie())
.apply(new RequestOptions().override(350, 550))
.into(cardViewViewHolder.imgPhoto);
cardViewViewHolder.tvTitle.setText(movie.getTitleMovie());
cardViewViewHolder.tvDesc.setText(movie.getDescription());
cardViewViewHolder.btnDetail.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(cardViewViewHolder.itemView.getContext(), "Detail "+
listMovie.get(cardViewViewHolder.getAdapterPosition()).getTitleMovie(), Toast.LENGTH_SHORT).show();
}
});
cardViewViewHolder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(cardViewViewHolder.itemView.getContext(), "Kamu Memilih "+movie.getTitleMovie(), Toast.LENGTH_SHORT).show();
mOnItemClickListener.onClick(i);
}
});
// cardViewViewHolder.itemView.setOnClickListener(new View.OnClickListener() {
// #Override
// public void onClick(View v) {
// Toast.makeText(cardViewViewHolder.itemView.getContext(), "Kamu Memilih "+movie.getTitleMovie(), Toast.LENGTH_SHORT).show();
// }
// });
}
#Override
public int getItemCount() {
return listMovie.size();
}
public class CardViewViewHolder extends RecyclerView.ViewHolder {
ImageView imgPhoto;
TextView tvTitle, tvDesc;
Button btnDetail;
public CardViewViewHolder(#NonNull View itemView) {
super(itemView);
imgPhoto = itemView.findViewById(R.id.img_item_photo);
tvTitle = itemView.findViewById(R.id.tv_title);
tvDesc = itemView.findViewById(R.id.tv_desc);
btnDetail = itemView.findViewById(R.id.btn_detail);
}
}
}
This is my MoviesFragment Class
import android.content.Intent;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.widget.CardView;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ListView;
import java.util.ArrayList;
/**
* A simple {#link Fragment} subclass.
*/
public class MoviesFragment extends Fragment implements View.OnClickListener{
private RecyclerView rvMovie;
private String[] dataMovieTitle;
private String[] dataDescription;
private TypedArray dataPhoto;
private ArrayList<Movie> movies;
Button btnDetail;
private CardviewMovieAdapter adapter;
View view;
final static String KEY = "KEY";
public MoviesFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
view = inflater.inflate(R.layout.fragment_movies, container, false);
//adapter = new CardviewMovieAdapter(movies,getContext());
rvMovie = view.findViewById(R.id.rv_movies);
prepare();
addItem();
showRecyclerCardView();
adapter = new CardviewMovieAdapter(movies, getContext());
adapter.setOnItemClickListener(new CardviewMovieAdapter.OnItemClickListener() {
#Override
public void onClick(int position) {
final Movie movie = movies.get(position);
DetailMoviesFragment detailMoviesFragment = new DetailMoviesFragment();
// Bundle mBundle = new Bundle();
// mBundle.putString(detailMoviesFragment.EXTRA_TITLE, movie.getTitleMovie());
// mBundle.putString(detailMoviesFragment.EXTRA_DESCRIPTION, movie.getDescription());
// mBundle.putInt(detailMoviesFragment.EXTRA_PHOTO, movie.getImageMovie());
// detailMoviesFragment.setArguments(mBundle);
MoviesFragment.newInstance(movie.getTitleMovie(), movie.getDescription(), movie.getImageMovie());
FragmentManager mFragmentManager = getFragmentManager();
if (mFragmentManager!= null) {
FragmentTransaction mFragmentTransaction = mFragmentManager.beginTransaction();
mFragmentTransaction.replace(R.id.containterFragment, detailMoviesFragment, DetailMoviesFragment.class.getSimpleName());
mFragmentTransaction.addToBackStack(null);
mFragmentTransaction.commit();
}
}
});
return view;
}
public static MoviesFragment newInstance(String title, String desc, int image) {
MoviesFragment moviesFragment = new MoviesFragment();
Bundle args = new Bundle();
args.putInt("image", image);
args.putString("title", title);
args.putString("desc", desc);
moviesFragment.setArguments(args);
return moviesFragment;
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
private void showRecyclerCardView(){
rvMovie.setLayoutManager(new LinearLayoutManager(getActivity()));
CardviewMovieAdapter adapter = new CardviewMovieAdapter(movies,getActivity());
rvMovie.setAdapter(adapter);
}
private void prepare() {
dataMovieTitle = getResources().getStringArray(R.array.data_movie_name);
dataDescription = getResources().getStringArray(R.array.data_desc_movie);
dataPhoto = getResources().obtainTypedArray(R.array.data_photo_movie);
}
private void addItem(){
movies = new ArrayList<>();
for (int i=0; i < dataMovieTitle.length; i++){
Movie movie = new Movie();
movie.setImageMovie(dataPhoto.getResourceId(i, -1));
movie.setTitleMovie(dataMovieTitle[i]);
movie.setDescription(dataDescription[i]);
movies.add(movie);
}
}
#Override
public void onClick(View v) {
if(v.getId() == R.id.card_view){
}
}
}
and this is DetailMoviesActivity Class
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import com.squareup.picasso.Picasso;
public class DetailMovieActivity extends AppCompatActivity {
Movie movie;
TextView tvTitle, tvDesc;
ImageView ivMovie;
Button btnDetail;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detail_movie);
initView();
}
private void initView() {
movie = (Movie) getIntent().getSerializableExtra("informasi");
String judul = movie.getTitleMovie();
String desc = movie.getDescription();
int img = movie.getImageMovie();
tvTitle.setText(judul);
tvDesc.setText(desc);
Picasso.get().load(img).into(ivMovie);
}
}
You can try with delete the setOnItemClickListener and call intent from cardViewViewHolder.itemView.setOnClickListener