Related
and thank you for your attention to my request.
I'm a newbie on Andorid Studio and I'm developing an App, it has to show a list of Events, Courses and News. There is a DrawerLayout which allow navigating into Event's, course's and news's area, each area has each specific RecyclerView, but into the home activity, I have to show all the items (Event, Course and News).
I create an Adapter for each item (because they have different properties) and each section (fragment) works properly but now I'm stuck with the main activity (the home).
Here are the models for explaining the difference between them:
Event
public class Event {
private int id;
private String title;
private String description;
private LocalDateTime startingDate;
private LocalDateTime endingDate;
private String cost;
private String website;
private Category category;
private Venue venue;
private Organizer organizer;
private String status;
private int resImage;
public Event(int id, String title, String description, LocalDateTime startingDate, LocalDateTime endingDate, String cost, String website, Category category, Venue venue, Organizer organizer, int image) {
this.id = id;
this.title = title;
this.description = description;
this.startingDate = startingDate;
this.endingDate = endingDate;
this.cost = cost;
this.website = website;
this.category = category;
this.venue = venue;
this.organizer = organizer;
this.resImage = image;
}
public Event(){}
public int getId() {
return id;
}
public String getTitle() {
return title;
}
public void setTitle(String name) {
this.title = title;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public LocalDateTime getStartingDate() {
return startingDate;
}
public void setStartingDate(LocalDateTime startingDate) {
this.startingDate = startingDate;
}
public LocalDateTime getEndingDate() {
return endingDate;
}
public void setEndingDate(LocalDateTime endingDate) {
this.endingDate = endingDate;
}
public String getCost() {
return cost;
}
public void setCost(String cost) {
this.cost = cost;
}
public String getWebsite() {
return website;
}
public void setWebsite(String website) {
this.website = website;
}
public Category getCategory() {
return category;
}
public Venue getVenue() {
return venue;
}
public Organizer getOrganizer() {
return organizer;
}
public String getStatus() {
return status;
}
public int getResImage() {
return resImage;
}
}
News:
public class News {
private int id;
private String title;
private String content;
private int resImage;
public News(int id, String title, String content, int image) {
this.id = id;
this.title = title;
this.content = content;
this.resImage = image;
}
public News(){}
public int getId(){
return this.id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getContent() {
return content;
}
public void setDescription(String description) {
this.content = content;
}
public int getResImage() {
return resImage;
}
public void setResImage(int resImage) {
this.resImage = resImage;
}
}
Courses
public Course(int id, String title, String content, float price, LocalDate startingDate, int availablePlace, Teacher teacher, CourseCategory courseCategory, Location location, Duration duration, Level level, int resImage) {
this.id = id;
this.title = title;
this.content = content;
this.price = price;
this.startingDate = startingDate;
this.availablePlace = availablePlace;
this.teacher = teacher;
this.courseCategory = courseCategory;
this.location = location;
this.duration = duration;
this.level = level;
this.resImage = resImage;
}
public int getId() {
return id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public float getPrice() {
return price;
}
public void setPrice(float price) {
this.price = price;
}
public LocalDate getStartingDate() {
return startingDate;
}
public void setStartingDate(LocalDate startingDate) {
this.startingDate = startingDate;
}
public int getAvailablePlace() {
return availablePlace;
}
public void setAvailablePlace(int availablePlace) {
this.availablePlace = availablePlace;
}
public Teacher getTeacher() {
return teacher;
}
public void setTeacher(Teacher teacher) {
this.teacher = teacher;
}
public CourseCategory getCourseCategory() {
return courseCategory;
}
public void setCourseCategory(CourseCategory courseCategory) {
this.courseCategory = courseCategory;
}
public Location getLocation() {
return location;
}
public void setLocation(Location location) {
this.location = location;
}
public Duration getDuration() {
return duration;
}
public void setDuration(Duration duration) {
this.duration = duration;
}
public Level getLevel() {
return level;
}
public int getResImage() {
return resImage;
}
public void setResImage(int resImage) {
this.resImage = resImage;
}
}
Here is the Adapters:
EventAdapter
public class EventViewAdapter extends RecyclerView.Adapter<EventViewAdapter.EventViewHolder> {
ArrayList<Event> eventList;
Context context;
public EventViewAdapter(ArrayList<Event> eventList, Context context) {
this.eventList = eventList;
this.context = context;
}
public EventViewAdapter() {
}
public static class EventViewHolder extends RecyclerView.ViewHolder {
ImageView eventImage;
TextView startingDate, place, title;
LinearLayout cellLayout;
EventViewHolder(View eventView) {
super(eventView);
eventImage = eventView.findViewById(R.id.event_image);
startingDate = eventView.findViewById(R.id.event_starting_date);
place = eventView.findViewById(R.id.event_place);
title = eventView.findViewById(R.id.event_title);
cellLayout = eventView.findViewById(R.id.event_cell_layout);
}
}
#NonNull
#Override
public EventViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.event_cell_def, parent, false);
EventViewHolder evh = new EventViewHolder(view);
return evh;
}
#Override
public void onBindViewHolder(#NonNull EventViewHolder holder, int position) {
final String title = eventList.get(position).getTitle();
final String description = eventList.get(position).getDescription();
final String place = eventList.get(position).getVenue().getCity();
final String address = eventList.get(position).getVenue().getAddress();
final String startDate = String.valueOf(eventList.get(position).getStartingDate().toLocalDate());
final String startTime = String.valueOf(eventList.get(position).getStartingDate().getHour() + ":" + String.valueOf(eventList.get(position).getStartingDate().getMinute()));
final String endDate = String.valueOf(eventList.get(position).getEndingDate().toLocalDate());
final String cost = eventList.get(position).getCost();
final String website = eventList.get(position).getWebsite();
final String category = eventList.get(position).getCategory().getName();
final String organizer = eventList.get(position).getOrganizer().getOrganizer();
final String organizerWebsite = eventList.get(position).getOrganizer().getWebsite();
final int image = eventList.get(position).getResImage();
holder.eventImage.setImageResource(image);
holder.startingDate.setText(startDate);
holder.place.setText(place);
holder.title.setText(title);
holder.cellLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(v.getContext(), DetailEventActivity.class);
intent.putExtra("title", title);
intent.putExtra("description", description);
intent.putExtra("place", place);
intent.putExtra("address", address);
intent.putExtra("startDate", startDate);
intent.putExtra("startTime", startTime);
intent.putExtra("endDate", endDate);
intent.putExtra("cost", cost);
intent.putExtra("website", website);
intent.putExtra("category", category);
intent.putExtra("organizer", organizer);
intent.putExtra("orgWebsite", organizerWebsite);
intent.putExtra("image", image);
v.getContext().startActivity(intent);
Toast.makeText(context, "Hai premuto su: " + title, Toast.LENGTH_SHORT).show();
}
});
}
#Override
public int getItemCount() {
return eventList.size();
}
public void eventSetSearchOperation(ArrayList<Event> newList){
eventList = new ArrayList<>();
eventList.addAll(newList);
notifyDataSetChanged();
}
}
CourseAdapter:
public class CourseViewAdapter extends RecyclerView.Adapter<CourseViewAdapter.CourseViewHolder> {
ArrayList<Course> courseList;
Context context;
public CourseViewAdapter(ArrayList<Course> courseList, Context context) {
this.courseList = courseList;
this.context = context;
}
public CourseViewAdapter(){}
public static class CourseViewHolder extends RecyclerView.ViewHolder {
ImageView courseImage;
TextView startingDate, place, title;
LinearLayout courseLinear;
CourseViewHolder(View courseView){
super(courseView);
courseImage = courseView.findViewById(R.id.course_image);
startingDate = courseView.findViewById(R.id.course_starting_date);
place = courseView.findViewById(R.id.course_place);
title = courseView.findViewById(R.id.course_title);
courseLinear = courseView.findViewById(R.id.course_cell_layout);
}
}
#NonNull
#Override
public CourseViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.course_cell_def, parent, false);
CourseViewHolder cvh = new CourseViewHolder(view);
return cvh;
}
#Override
public void onBindViewHolder(#NonNull CourseViewHolder holder, int position) {
final String title = courseList.get(position).getTitle();
final String category = courseList.get(position).getCourseCategory().getName();
final String description = courseList.get(position).getContent();
final String place = courseList.get(position).getLocation().getName();
final String startDate = String.valueOf(courseList.get(position).getStartingDate());
final int availablePlace = courseList.get(position).getAvailablePlace();
final String teacher = courseList.get(position).getTeacher().getName();
final String teacherEmail = courseList.get(position).getTeacher().getEmail();
final String teacherMobile = courseList.get(position).getTeacher().getPhone();
final String duration = courseList.get(position).getDuration().getName();
final String level = courseList.get(position).getLevel().getName();
final String price = String.valueOf(courseList.get(position).getPrice());
final int image = courseList.get(position).getResImage();
holder.courseImage.setImageResource(image);
holder.startingDate.setText(startDate);
holder.place.setText(place);
holder.title.setText(title);
holder.courseLinear.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(v.getContext(), DetailCourseActivity.class);
intent.putExtra("title", title);
intent.putExtra("category", category);
intent.putExtra("content", description);
intent.putExtra("startDate", startDate);
intent.putExtra("availablePlace", availablePlace);
intent.putExtra("teacher", teacher);
intent.putExtra("teacherEmail", teacherEmail);
intent.putExtra("teacherMobile", teacherMobile);
intent.putExtra("duration", duration);
intent.putExtra("price", price);
intent.putExtra("place", place);
intent.putExtra("level", level);
intent.putExtra("image", image);
v.getContext().startActivity(intent);
Toast.makeText(context, "Hai premuto su: " + title, Toast.LENGTH_SHORT).show();
}
});
}
#Override
public int getItemCount() {
return courseList.size();
}
public void courseSetSearchOperation(ArrayList<Course> newList){
courseList = new ArrayList<>();
courseList.addAll(newList);
notifyDataSetChanged();
}
}
News:
public class NewsViewAdapter extends RecyclerView.Adapter<NewsViewAdapter.NewsViewHolder> {
ArrayList<News> newsList;
Context context;
public NewsViewAdapter(ArrayList<News> newsList, Context context) {
this.newsList = newsList;
this.context = context;
}
public NewsViewAdapter(){}
public static class NewsViewHolder extends RecyclerView.ViewHolder {
ImageView newsImage;
TextView newsTitle, newsContent;
LinearLayout newsLayout;
NewsViewHolder(View newView){
super(newView);
newsImage = newView.findViewById(R.id.news_image);
newsTitle = newView.findViewById(R.id.news_title);
newsContent = newView.findViewById(R.id.news_content);
newsLayout = newView.findViewById(R.id.news_cell_layout);
}
}
#NonNull
#Override
public NewsViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.news_cell_def, parent, false);
NewsViewHolder nvh = new NewsViewHolder(view);
return nvh;
}
#Override
public void onBindViewHolder(#NonNull NewsViewHolder holder, int position) {
final String title = newsList.get(position).getTitle();
final String content = newsList.get(position).getContent();
final int image = newsList.get(position).getResImage();
holder.newsImage.setImageResource(image);
holder.newsTitle.setText(title);
holder.newsContent.setText(content);
holder.newsLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(v.getContext(), DetailNewsActivity.class);
intent.putExtra("title", title);
intent.putExtra("content", content);
intent.putExtra("image", image);
v.getContext().startActivity(intent);
Toast.makeText(context, "Premuto su: " + title, Toast.LENGTH_SHORT).show();
}
});
}
#Override
public int getItemCount() {
return newsList.size();
}
public void newsSetSearchOperation(ArrayList<News> newList){
newsList = new ArrayList<>();
newsList.addAll(newList);
notifyDataSetChanged();
}
}
Each specific list of item is into a fragment, indeed here is the Main Activity (home), where I would like to display a RecyclerView of all the itmes:
public class MainActivity extends AppCompatActivity {
private DrawerLayout drawerLayout;
private NavigationView mNavigationView;
private Toolbar toolbar;
private ActionBarDrawerToggle drawerToggle;
private FloatingActionButton fab;
private RecyclerView mRecyclerView;
private ImageView openFilter;
private SearchView searchView;
private DataMock dataMock = new DataMock();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecyclerView = findViewById(R.id.recycler_view_main);
drawerLayout = findViewById(R.id.drawer_layout);
mNavigationView = findViewById(R.id.nav_view);
toolbar = findViewById(R.id.toolbar);
openFilter = findViewById(R.id.filter_icon);
searchView = findViewById(R.id.action_search);
fab = findViewById(R.id.fab);
fab.show();
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
searchView.setQueryHint(getString(R.string.search_hint));
drawerToggle = setupDrawerToggle();
drawerToggle.setDrawerIndicatorEnabled(true);
drawerToggle.syncState();
drawerLayout.setDrawerListener(drawerToggle);
drawerLayout.setDrawerListener(new DrawerLayout.SimpleDrawerListener() {
#Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
}
#Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
}
});
mNavigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem menuItem) {
Fragment nextFragment;
switch (menuItem.getItemId()){
case R.id.event_list:
nextFragment = new EventFragment();
break;
case R.id.course_list:
nextFragment = new CourseFragment();
break;
case R.id.news_list:
nextFragment = new NewsFragment();
break;
default:
throw new IllegalArgumentException("No Fragment for the given menu item");
}
if (nextFragment != null){
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.anchor_point, nextFragment)
.commit();
menuItem.setChecked(true);
setTitle(menuItem.getTitle());
drawerLayout.closeDrawer(mNavigationView);
}
return false;
}
});
openFilter.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
BottomSheetDialog filterDialog = new BottomSheetDialog();
filterDialog.show(getSupportFragmentManager(), "filter dialog opened!");
}
});
// mRecyclerView.setHasFixedSize(true);
// LinearLayoutManager layoutManager = new LinearLayoutManager(this);
// mRecyclerView.setLayoutManager(layoutManager);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// The action bar home/up action should open or close the drawer.
switch (item.getItemId()) {
case android.R.id.home:
drawerLayout.openDrawer(GravityCompat.START);
return true;
}
return super.onOptionsItemSelected(item);
}
private ActionBarDrawerToggle setupDrawerToggle() {
// NOTE: Make sure you pass in a valid toolbar reference. ActionBarDrawToggle() does not require it
// and will not render the hamburger icon without it.
return new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close);
}
public void backToHome(View view){
for (Fragment fragment : getSupportFragmentManager().getFragments()){
if (fragment != null && (fragment instanceof CourseFragment || fragment instanceof EventFragment || fragment instanceof NewsFragment)){
getSupportFragmentManager().beginTransaction().remove(fragment).commit();
toolbar.setTitle("WePress");
fab.show();
}
}
Toast.makeText(this, "Premuto sul logo", Toast.LENGTH_SHORT).show();
drawerLayout.closeDrawer(mNavigationView);
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
drawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggles
drawerToggle.onConfigurationChanged(newConfig);
}
public void addItem(View view){
PopupMenu popupMenu = new PopupMenu(MainActivity.this, fab);
popupMenu.getMenuInflater().inflate(R.menu.fab_main_menu, popupMenu.getMenu());
popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem item) {
switch (item.getItemId()){
case R.id.add_event:
Toast.makeText(MainActivity.this, "Pronti per aggiungere un evento", Toast.LENGTH_SHORT).show();
Intent intentEvent = new Intent(MainActivity.this, AddItemActivity.class);
intentEvent.putExtra("isFrom", "event");
startActivity(intentEvent);
break;
case R.id.add_course:
Toast.makeText(MainActivity.this, "Pronti per aggiungere un corso", Toast.LENGTH_SHORT).show();
Intent intentCourse = new Intent(MainActivity.this, AddItemActivity.class);
intentCourse.putExtra("isFrom", "course");
startActivity(intentCourse);
break;
case R.id.add_news:
Toast.makeText(MainActivity.this, "Pronti per aggiungere una news", Toast.LENGTH_SHORT).show();
Intent intentNews = new Intent(MainActivity.this, AddItemActivity.class);
intentNews.putExtra("isFrom", "news");
startActivity(intentNews);
break;
}
return true;
}
});
popupMenu.show();
}
}
if it's possible to show the list with differents layouts, can you also suggest a way to improve the quality of my code avoiding to repeat lines of code? If I'm not wrong, I would like to re-use each Adapter or part of them that I can put into a specific class (?).
Thank you so much for your help!
If I'm missing some information, please ask me in order to edit the post.
You must do only one adapter (using view type) with a view model class
that contain either an event or a news or a course
the adapter should be something like that:
public class EventViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private static final int TYPE_EVENT = 10;
private static final int TYPE_COURSE = 11;
private static final int TYPE_NEWS = 12;
ArrayList<EventViewModel> eventList;
Context context;
public EventViewAdapter(ArrayList<EventViewModel> eventList, Context context) {
this.eventList = eventList;
this.context = context;
}
public EventViewAdapter() {
}
#Override
public int getItemViewType(int position) {
EventViewModel event = eventList.get(position);
if (event.isEvent()) {
return TYPE_EVENT ;
} else if(event.isCourse()) {
return TYPE_COURSE;
} else {
return TYPE_NEWS;
}
}
public static class EventViewHolder extends RecyclerView.ViewHolder {
ImageView eventImage;
//....
EventViewHolder(View eventView) {
super(eventView);
eventImage = eventView.findViewById(R.id.event_image);
//.....
}
}
public static class CourseViewHolder extends RecyclerView.ViewHolder {
ImageView courseImage;
//.....
CourseViewHolder(View courseView) {
super(courseView);
courseImage = courseView.findViewById(R.id.course_image);
//.....
}
public static class NewsViewHolder extends RecyclerView.ViewHolder {
ImageView newsImage;
//.....
NewsViewHolder(View newView){
super(newView);
newsImage = newView.findViewById(R.id.news_image);
//.....
}
#NonNull
#Override
public RecyclerView.ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
if (viewType == TYPE_EVENT) {
View rootView = LayoutInflater.from(parent.getContext()).inflate(R.layout.event_cell_def, parent, false);
return new EventViewHolder (rootView);
} else if (viewType == TYPE_COURSE) {
View rootView = LayoutInflater.from(parent.getContext()).inflate(R.layout.course_cell_def, parent, false);
return new CourseViewHolder(rootView);
} else {
View rootView = LayoutInflater.from(parent.getContext()).inflate(R.layout.news_cell_def, parent, false);
return new NewsViewHolder(rootView);
}
}
#Override
public void onBindViewHolder(#NonNull EventViewHolder holder, int position)
{
final EventViewModel eventViewModel = eventList.get(position);
if (eventViewModel .isEvent()) {
onBindEvent(holder, eventViewModel.getEvent());
} else if(eventViewModel .isCourse()) {
onBindCourse(holder, eventViewModel.getCourse());
} else {
onBindNews(holder, eventViewModel.getNews());
}
}
private void onBindEvent(RecyclerView.ViewHolder holder, Event event) {
EventViewHolder eventHolder= (EventViewHolder ) holder;
final String title = event.getTitle();
final String description = event.getDescription();
// others ...
holder.eventImage.setImageResource(image);
holder.startingDate.setText(startDate);
// others ...
holder.cellLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
}
});
// ...
}
#Override
public int getItemCount() {
return eventList.size();
}
public void eventSetSearchOperation(ArrayList<Event> newList){
eventList = new ArrayList<>();
eventList.addAll(newList);
notifyDataSetChanged();
}
}
And a View Model classes like that :
public class EventViewModel() {
private Event mEvent;
private Course mCourse;
private News mNews;
private EventViewModel(Event event, Course course, News news) {
this.mEvent = event;
this.mCourse = course;
this.mNews = news;
}
public boolean isEvent() {
return mEvent != null
}
public boolean isCourse() {
return mCourse != null
}
public boolean isNews() {
return mNews != null
}
public static EventViewModel getEventInstance(Event event) {
return new EventViewModel(event, null, null
}
public static EventViewModel getCourseInstance(Course course) {
return new EventViewModel(null, course, null
}
public static EventViewModel getNewsInstance(News news) {
return new EventViewModel(null, null, news
}
public Event getEvent() {
return mEvent;
}
public Event getCourse() {
return mScore;
}
public Event getNews() {
return mNews;
}
}
You can use this adapter in all of your fragments (event, course, news) and each fragment contaions a list of EventViewModel with only its specific type. The adapter display in the main activity contains EventViewModel of all types to display all events.
ArrayList.size() showing zero every time. Actually im trying to Filter the Data using the data stored on the ArrayList
This is my HomeFragment.Java
public class HomeFragment extends Fragment {
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
private static final String TAG_check="check";
public RecyclerView recyclerView;
SearchView realsv;
private AlbumsAdapter adapter;
private ArrayList<Album> albumList;
private ArrayList<Album> test;
private Album album;
public ImageView imga;
public CollapsingToolbarLayout collapsingToolbar;
public AppBarLayout appBarLayout;
ProgressDialog pd;
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private OnFragmentInteractionListener mListener;
public HomeFragment() {
// Required empty public constructor
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
public static HomeFragment newInstance(String param1, String param2) {
HomeFragment fragment = new HomeFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
realsv=(SearchView)rootView.findViewById(R.id.realsv);
recyclerView = (RecyclerView) rootView.findViewById(R.id.rcv);
//test.addAll(albumList);
//test.clear();
realsv.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
Log.i("YES","FIRST STEP"+albumList.size());
newText=newText.toLowerCase();
for(Album al: albumList)
{
String title = al.getName().toLowerCase();
ArrayList<Album> test = new ArrayList<>();
Log.i("CHEK",title);
if(title.contains(newText)){
Log.i("CHEK ok",title+"ok");
test.add(al);
}
}
adapter.setFilter(test);
// adapter.getFilter().filter(newText);
return true;
}
});
initViews();
return rootView;
}
private void initViews(){
pd = new ProgressDialog(getActivity());
pd.setMessage("Fetching Data...");
pd.setCancelable(false);
pd.show();
albumList = new ArrayList<>();
adapter = new AlbumsAdapter(getActivity(), albumList);
RecyclerView.LayoutManager mLayoutManager = new GridLayoutManager(getActivity(), 2);
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.addItemDecoration(new GridSpacingItemDecoration(2, dpToPx(10), true));
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(adapter);
loadJSON();
}
private void loadJSON(){
try{
Client Client = new Client();
//this is where it all changes
Hindi apiService = Client.getClient().create(Hindi.class);
Call<AlbumsResponse> call = apiService.getAlbums();
call.enqueue(new Callback<AlbumsResponse>() {
#Override
public void onResponse(Call<AlbumsResponse> call, Response<AlbumsResponse> response) {
ArrayList<Album> items = response.body().getAlbums();
recyclerView.setAdapter(new AlbumsAdapter(getActivity(), items));
recyclerView.smoothScrollToPosition(0);
pd.hide();
}
#Override
public void onFailure(Call<AlbumsResponse> call, Throwable t) {
Log.d("Error", t.getMessage());
// Toast.makeText(MainActivity.this, "Error Fetching Data!", Toast.LENGTH_SHORT).show();
pd.hide();
}
});
}catch (Exception e){
Log.d("Error", e.getMessage());
// Toast.makeText(this, e.toString(), Toast.LENGTH_SHORT).show();
}
}
}
This is My adapter Class for Recyclerview
public class AlbumsAdapter extends RecyclerView.Adapter<AlbumsAdapter.MyViewHolder>{
private Context mContext;
private ArrayList<Album> albumList;
//private List<Album> newList;
public AlbumsAdapter(Context mContext, ArrayList<Album> albuList) {
this.mContext = mContext;
this.albumList = albuList;
// this.newList=albuList;
}
#Override
public AlbumsAdapter.MyViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.album_card, viewGroup, false);
return new MyViewHolder(view);
}
#Override
public void onBindViewHolder(final AlbumsAdapter.MyViewHolder viewHolder, int i) {
viewHolder.title.setText(albumList.get(i).getName());
viewHolder.count.setText(albumList.get(i).getLang());
//load album cover using picasso
Picasso.with(mContext)
.load(albumList.get(i).getThumbnail())
.placeholder(R.drawable.load)
.into(viewHolder.thumbnail);
}
/**
* Showing popup menu when tapping on 3 dots
*/
private void showPopupMenu(View view) {
// inflate menu
PopupMenu popup = new PopupMenu(mContext, view);
MenuInflater inflater = popup.getMenuInflater();
inflater.inflate(R.menu.menu_album, popup.getMenu());
popup.setOnMenuItemClickListener(new MyMenuItemClickListener());
popup.show();
}
public void setFilter(ArrayList<Album> nn){
albumList= new ArrayList<Album>();
for (Album al:nn){
albumList.add(al);
}
notifyDataSetChanged();
}
/**
* Click listener for popup menu items
*/
class MyMenuItemClickListener implements PopupMenu.OnMenuItemClickListener {
public MyMenuItemClickListener() {
}
#Override
public boolean onMenuItemClick(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.action_add_favourite:
Toast.makeText(mContext, "Add to favourite", Toast.LENGTH_SHORT).show();
return true;
case R.id.action_play_next:
Toast.makeText(mContext, "Play next", Toast.LENGTH_SHORT).show();
return true;
default:
}
return false;
}
}
#Override
public int getItemCount() {
return albumList.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView title, count;
public ImageView thumbnail, overflow;
public MyViewHolder(View view) {
super(view);
title = (TextView) view.findViewById(R.id.title);
count = (TextView) view.findViewById(R.id.count);
thumbnail = (ImageView) view.findViewById(R.id.thumbnail);
// overflow = (ImageView) view.findViewById(R.id.overflow);
//on item click
itemView.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
int pos = getAdapterPosition();
if (pos != RecyclerView.NO_POSITION){
Album clickedDataItem = albumList.get(pos);
Intent intent = new Intent(mContext, Det.class);
intent.putExtra("name", albumList.get(pos).getName());
intent.putExtra("lang", albumList.get(pos).getLang());
intent.putExtra("thumbnail", albumList.get(pos).getThumbnail());
intent.putExtra("scrn",albumList.get(pos).getScrn());
intent.putExtra("ourl",albumList.get(pos).getOurl());
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mContext.startActivity(intent);
// Toast.makeText(v.getContext(), "You clicked " + clickedDataItem.getName(), Toast.LENGTH_SHORT).show();
}
}
});
}
}
}
`
This is Model Class Album.java
public class Album {
#SerializedName("name")
#Expose
private String name;
#SerializedName("lang")
#Expose
private String lang;
#SerializedName("thumbnail")
#Expose
private String thumbnail;
#SerializedName("scrn")
#Expose
private String scrn;
#SerializedName("ourl")
#Expose
private String ourl;
public Album() {
}
public Album(String name, String lang, String thumbnail, String scrn,
String ourl) {
this.name = name;
this.lang = lang;
this.thumbnail = thumbnail;
this.scrn=scrn;
this.ourl=ourl;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getLang() {
return lang;
}
public void setLang(String lang) {
this.lang = lang;
}
public String getThumbnail() {
return thumbnail;
}
public void setThumbnail(String thumbnail) {
this.thumbnail = thumbnail;
}
public String getScrn() {
return scrn;
}
public void setScrn(String scrn) {
this.scrn = scrn;
}
public String getOurl() {
return ourl;
}
public void setOurl(String ourl) {
this.ourl = ourl;
}
}
This is the AlbumResponse.java
public class AlbumsResponse {
#SerializedName("Album")
#Expose
private ArrayList<Album> albums;
public ArrayList<Album> getAlbums(){
return albums;
}
public void setAlbums(ArrayList<Album>albums){
this.albums = albums;
}
}
Ok so in your LoadJson method, you populate a new array called items and then populate your adapter with it. So in your adapter your albumList gets populated which is fine. But then in your OnQueryTextChanged method you check for your query string in albumList array, which you have declared in your Home fragment but never initialized. So hence no filter results. assign your items to albumlist and it will work
In your loadJson() method, in onResponse you are creating a new ArrayList to get all albums and not setting that to your global variable albumList.
So you should do this,
ArrayList<Album> items = response.body().getAlbums();
albumList.addAll(items);
I'm trying to change the icon of a button in my recycler view every time the activity starts based off a boolean value in my custom object. I assume this has to be done within the adapter since not every groups button will have the same background.
Below is the code for my recycler view adapter:
public class RecipeListAdapter extends RecyclerView.Adapter<RecipeListAdapter.ViewHolder>{
private List<Recipe> mRecipeSet;
private Button mAddToGroceriesButton;
public RecipeListAdapter(List<Recipe> recipes){
mRecipeSet = recipes;
}
// Provide a reference to the views for each data item
// Complex data items may need more than one view per item, and
// you provide access to all the views for a data item in a view holder
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
//This is what will handle what happens when you click a recipe in the recycler view
private TextView mRecipeName;
private TextView mPrepTime;
private TextView mCookTime;
private TextView mServingSize;
private RelativeLayout mRecipeTextSection;
public ViewHolder(View v) {
super(v);
mRecipeName = (TextView) v.findViewById(R.id.recipe_list_recycler_view_recipe_name);
mServingSize = (TextView) v.findViewById(R.id.recipe_list_recycler_view_serving_size);
mPrepTime = (TextView) v.findViewById(R.id.recipe_list_recycler_view_prep_time);
mCookTime = (TextView) v.findViewById(R.id.recipe_list_recycler_view_cook_time);
mRecipeTextSection = (RelativeLayout) v.findViewById(R.id.recycled_item_section_view);
mRecipeTextSection.setOnClickListener(this);
mAddToGroceriesButton = (Button) v.findViewById(R.id.add_to_grocery_list);
mAddToGroceriesButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int position = getAdapterPosition();
Recipe recipeToGrocery = mRecipeSet.get(position);
//RecipeDB dbHelper = new RecipeDB(v.getContext());
//dbHelper.addGroceryItem(recipeToGrocery);
if(!recipeToGrocery.isInList()) {
RecipeDB dbHelper = new RecipeDB(v.getContext());
dbHelper.addGroceryItem(recipeToGrocery);
recipeToGrocery.setInList(true);
dbHelper.updateRecipe(recipeToGrocery);
mAddToGroceriesButton.setBackgroundResource(R.mipmap.ic_playlist_add_check_black_24dp);
Toast.makeText(v.getContext(), recipeToGrocery.getRecipeName() + " added to grocery list.", Toast.LENGTH_SHORT).show();
}
else {
Toast.makeText(v.getContext(), "That recipe is already in the list.", Toast.LENGTH_SHORT).show();
}
}
});
}
#Override
public void onClick(View v){
int position = getAdapterPosition();
Intent i = new Intent(v.getContext(), RecipeTextView.class);
Recipe selectedRecipe = mRecipeSet.get(position);
i.putExtra("view_recipe_key", selectedRecipe);
v.getContext().startActivity(i);
}
}
public void add(int position, Recipe item) {
mRecipeSet.add(position, item);
notifyItemInserted(position);
}
public void remove(Recipe item) {
int position = mRecipeSet.indexOf(item);
mRecipeSet.remove(position);
notifyItemRemoved(position);
}
public RecipeListAdapter(ArrayList<Recipe> myRecipeset) {
mRecipeSet = myRecipeset;
}
// Create new views (invoked by the layout manager)
#Override
public RecipeListAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.recipe_item_recycled, parent, false);
ViewHolder vh = new ViewHolder(v);
return vh;
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
Recipe recipe = mRecipeSet.get(position);
String recipeName = recipe.getRecipeName();
String prepTime = "Prep Time: " + String.valueOf(recipe.getPrepTime()) + " minutes";
String cookTime = "Cook Time: " + String.valueOf(recipe.getCookTime()) + " minutes";
String servingSize = "Servings: " + String.valueOf(recipe.getServings());
holder.mRecipeName.setText(recipeName);
//Only display values if they are not null
if(recipe.getServings() != null) {
holder.mServingSize.setText(servingSize);
}
if (recipe.getPrepTime() != null) {
holder.mPrepTime.setText(prepTime);
}
if(recipe.getCookTime() != null) {
holder.mCookTime.setText(cookTime);
}
}
// Return the size of your dataset (invoked by the layout manager)
#Override
public int getItemCount() {
if(mRecipeSet != null) {
return mRecipeSet.size();
}
return 0;
}
}
I know how to change the background of the button when it's clicked with
mAddToGroceriesButton.setBackgroundResource(R.mipmap.ic_playlist_add_check_black_24dp);
but it's obviously not going to save the state of that button when the activity restarts. I'm just not sure of how to check the boolean value for each group upon activity start up and change the button background accordingly.
I tried using
if(recipe.isInList()){
mAddToGroceriesButton.setBackgroundResource(R.mipmap.ic_playlist_add_check_black_24dp);
}
in the onBindViewHolder method but it didn't do anything, and I'm pretty sure that wouldn't be the correct place for it anyways. I know the boolean is working properly since I use it in other places and it works fine.
Here's the relevant XML code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/apk/res/android"
android:layout_margin="7dp"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:id="#+id/recycled_item_section_view"
android:elevation="30dp"
android:background="#drawable/background_border"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:text="Recipe name"
android:textSize="24dp"
android:textColor="#color/black"
android:id="#+id/recipe_list_recycler_view_recipe_name"
android:paddingBottom="3dp"
android:maxWidth="275dip"
android:singleLine="false"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="18dp"
android:textColor="#color/black"
android:layout_below="#id/recipe_list_recycler_view_recipe_name"
android:id="#+id/recipe_list_recycler_view_serving_size"
android:paddingBottom="3dp"/>
<Button
android:layout_width="35dp"
android:layout_height="35dp"
android:background="#mipmap/ic_playlist_add_black_24dp"
android:height="36dp"
android:padding="8dp"
android:layout_alignParentRight="true"
android:id="#+id/add_to_grocery_list"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/recipe_list_recycler_view_serving_size"
android:layout_alignParentLeft="true"
android:textSize="18dp"
android:textColor="#color/black"
android:id="#+id/recipe_list_recycler_view_prep_time"
android:paddingBottom="3dp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/recipe_list_recycler_view_prep_time"
android:textSize="18dp"
android:textColor="#color/black"
android:layout_alignParentLeft="true"
android:id="#+id/recipe_list_recycler_view_cook_time"/>
</RelativeLayout>
Recipe class:
public class Recipe implements Parcelable {
//These are all of the qualities a recipe contains, we will create an arraylist of this in the activity
private String mRecipeName;
private int mID;
private String mServings;
private String mPrepTime;
private String mCookTime;
private boolean isInList;
private List<String> mIngredients;
private List<String> mDirections;
public Recipe(){
}
public Recipe(int id, String name, String serving, String prep, String cook, List<String>
ingredientsList, List<String> directionsList, boolean inList){
this.mID = id;
this.mRecipeName = name;
this.mServings = serving;
this.mPrepTime = prep;
this.mCookTime = cook;
this.mIngredients = ingredientsList;
this.mDirections = directionsList;
this.isInList = inList;
}
public Recipe(String name, String serving, String prep, String cook, List<String>
ingredientsList, List<String> directionsList, boolean inList){
this.mRecipeName = name;
this.mServings = serving;
this.mPrepTime = prep;
this.mCookTime = cook;
this.mIngredients = ingredientsList;
this.mDirections = directionsList;
this.isInList = inList;
}
public String getRecipeName() {
return mRecipeName;
}
public int getID() {
return mID;
}
public void setID(int id){
mID = id;
}
public String getServings() {
return mServings;
}
public String getPrepTime() {
return mPrepTime;
}
public void setRecipeName(String recipeName) {
mRecipeName = recipeName;
}
public void setServingSize(String servings) {
mServings = servings;
}
public void setPrepTime(String prepTime) {
mPrepTime = prepTime;
}
public void setServings(String servings) {
mServings = servings;
}
public List<String> getIngredients() {
return mIngredients;
}
public List<String> getDirections() {
return mDirections;
}
public String getCookTime() {
return mCookTime;
}
public void setCookTime(String cookTime) {
mCookTime = cookTime;
}
public void setIngredients(List<String> ingredients) {
mIngredients = ingredients;
}
public void setDirections(List<String> directions) {
mDirections = directions;
}
public boolean isInList() {
return isInList;
}
public void setInList(boolean inList) {
isInList = inList;
}
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(this.mRecipeName);
dest.writeInt(this.mID);
dest.writeString(this.mServings);
dest.writeString(this.mPrepTime);
dest.writeString(this.mCookTime);
dest.writeByte(this.isInList ? (byte) 1 : (byte) 0);
dest.writeStringList(this.mIngredients);
dest.writeStringList(this.mDirections);
}
protected Recipe(Parcel in) {
this.mRecipeName = in.readString();
this.mID = in.readInt();
this.mServings = in.readString();
this.mPrepTime = in.readString();
this.mCookTime = in.readString();
this.isInList = in.readByte() != 0;
this.mIngredients = in.createStringArrayList();
this.mDirections = in.createStringArrayList();
}
public static final Creator<Recipe> CREATOR = new Creator<Recipe>() {
#Override
public Recipe createFromParcel(Parcel source) {
return new Recipe(source);
}
#Override
public Recipe[] newArray(int size) {
return new Recipe[size];
}
};
}
And main activity class that uses the adapter:
public class RecipeList extends AppCompatActivity{
private RecyclerView mRecyclerView;
private RecyclerView.Adapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
private int REQUEST_CODE=1;
private Button mNavigateGroceryButton;
RecipeDB dbHelper = new RecipeDB(this);
List<Recipe> recipes;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
recipes = dbHelper.getAllRecipes();
setContentView(R.layout.activity_recipe_list);
mRecyclerView = (RecyclerView) findViewById(R.id.list_recycler_view);
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
mAdapter = new RecipeListAdapter(recipes);
mRecyclerView.setAdapter(mAdapter);
mNavigateGroceryButton = (Button) findViewById(R.id.navigate_to_groceries_button_list_view);
mNavigateGroceryButton.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
Intent i = new Intent(RecipeList.this, ExpandableListViewActivity.class);
//Log.d("Navigate", "navigate pressed" );
startActivity(i);
}
});
}
#Override
public void onBackPressed() {
}
public boolean onOptionsItemSelected(MenuItem item){
//Handles menu buttons
switch (item.getItemId()){
case R.id.recipe_list_add_recipe_actionbar_button:
//This button creates a new empty Recipe object and passes it to the EditRecipe class
//The Recipe object is passed as a parcelable
Recipe passedRecipe = new Recipe();
Intent i = new Intent(RecipeList.this, EditRecipe.class);
i.putExtra("passed_recipe_key", (Parcelable) passedRecipe);
startActivityForResult(i, REQUEST_CODE);
return true;
default:
Log.d("Name,", "default called");
return super.onOptionsItemSelected(item);
}
}
public void addNewReRecipe(Recipe recipe){
dbHelper.addRecipe(recipe);
recipes = dbHelper.getAllRecipes();
mAdapter = new RecipeListAdapter(recipes);
mRecyclerView.setAdapter(mAdapter);
}
//Makes the menu bar appear as it is in the action_bar_recipe_list_buttons menu layout file
#Override
public boolean onCreateOptionsMenu(Menu menu){
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.action_bar_recipe_list_buttons, menu);
return true;
}
//This code is called after creating a new recipe. This is only for creating, and not editing.
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data){
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE){
if(resultCode == Activity.RESULT_OK) {
Recipe createdRecipe = data.getExtras().getParcelable("recipe_key");
addNewReRecipe(createdRecipe);
}
}
}
}
Looks like you need to declare your button at the top of your ViewHolder with your other views. So move the declaration from the top of your adapter:
private Button mAddToGroceriesButton;
Then in your onBindViewHolder method you can get a reference to your button through the holder and set the background:
if(recipe.isInList()) {
holder.mAddToGroceriesButton.setBackgroundResource(R.mipmap.ic_playlist_add_check_black_24dp);
}
Try this,
public class RecipeListAdapter extends RecyclerView.Adapter<RecipeListAdapter.ViewHolder>{
private List<Recipe> mRecipeSet;
private Button mAddToGroceriesButton;
public RecipeListAdapter(List<Recipe> recipes){
mRecipeSet = recipes;
}
// Provide a reference to the views for each data item
// Complex data items may need more than one view per item, and
// you provide access to all the views for a data item in a view holder
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
//This is what will handle what happens when you click a recipe in the recycler view
private TextView mRecipeName;
private TextView mPrepTime;
private TextView mCookTime;
private TextView mServingSize;
private RelativeLayout mRecipeTextSection;
public ViewHolder(View v) {
super(v);
mRecipeName = (TextView) v.findViewById(R.id.recipe_list_recycler_view_recipe_name);
mServingSize = (TextView) v.findViewById(R.id.recipe_list_recycler_view_serving_size);
mPrepTime = (TextView) v.findViewById(R.id.recipe_list_recycler_view_prep_time);
mCookTime = (TextView) v.findViewById(R.id.recipe_list_recycler_view_cook_time);
mRecipeTextSection = (RelativeLayout) v.findViewById(R.id.recycled_item_section_view);
mAddToGroceriesButton = (Button) v.findViewById(R.id.add_to_grocery_list);
}
}
public void add(int position, Recipe item) {
mRecipeSet.add(position, item);
notifyItemInserted(position);
}
public void remove(Recipe item) {
int position = mRecipeSet.indexOf(item);
mRecipeSet.remove(position);
notifyItemRemoved(position);
}
public RecipeListAdapter(ArrayList<Recipe> myRecipeset) {
mRecipeSet = myRecipeset;
}
// Create new views (invoked by the layout manager)
#Override
public RecipeListAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.recipe_item_recycled, parent, false);
ViewHolder vh = new ViewHolder(v);
return vh;
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
Recipe recipe = mRecipeSet.get(position);
String recipeName = recipe.getRecipeName();
String prepTime = "Prep Time: " + String.valueOf(recipe.getPrepTime()) + " minutes";
String cookTime = "Cook Time: " + String.valueOf(recipe.getCookTime()) + " minutes";
String servingSize = "Servings: " + String.valueOf(recipe.getServings());
holder.mRecipeName.setText(recipeName);
//Only display values if they are not null
if(recipe.getServings() != null) {
holder.mServingSize.setText(servingSize);
}
if (recipe.getPrepTime() != null) {
holder.mPrepTime.setText(prepTime);
}
if(recipe.getCookTime() != null) {
holder.mCookTime.setText(cookTime);
}
mRecipeTextSection.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int position = getAdapterPosition();
Intent i = new Intent(v.getContext(), RecipeTextView.class);
Recipe selectedRecipe = mRecipeSet.get(position);
i.putExtra("view_recipe_key", selectedRecipe);
v.getContext().startActivity(i);
});
Recipe recipeToGrocery = mRecipeSet.get(position);
if(!recipeToGrocery.isInList()) {
mAddToGroceriesButton.setBackgroundResource(R.mipmap.ic_playlist_add_check_black_24dp);
}
else{
mAddToGroceriesButton.setBackgroundResource(R.mipmap.ic_playlist_add_check_black_26dp);//set another image
}
mAddToGroceriesButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int position = getAdapterPosition();
Recipe recipeToGrocery = mRecipeSet.get(position);
//RecipeDB dbHelper = new RecipeDB(v.getContext());
//dbHelper.addGroceryItem(recipeToGrocery);
if(!recipeToGrocery.isInList()) {
RecipeDB dbHelper = new RecipeDB(v.getContext());
dbHelper.addGroceryItem(recipeToGrocery);
recipeToGrocery.setInList(true);
dbHelper.updateRecipe(recipeToGrocery);
notifyDataSetChanged();
}
else {
Toast.makeText(v.getContext(), "That recipe is already in the list.", Toast.LENGTH_SHORT).show();
}
}
});
}
// Return the size of your dataset (invoked by the layout manager)
#Override
public int getItemCount() {
if(mRecipeSet != null) {
return mRecipeSet.size();
}
return 0;
}
}
i create application call api the moves DB with retrofit library and recyclerViewe
when user choose the movie Show activity for detail movies
Now i implement recyclerView with ritrofit to create fetch the popular movie data,
this MoviesApiService class :
public interface MoviesApiService {
#GET("/movie/popular")
void getPopularMovies(Callback<Movie.MovieResult> cb); }
this model class :
package com.walkatheri.popularmovies;
import android.os.Parcel;
import android.os.Parcelable;
import com.google.gson.annotations.SerializedName;
import java.util.List;
/**
*/
public class Movie implements Parcelable{
private String title;
#SerializedName("poster_path")
private String poster;
#SerializedName("overview")
private String description;
#SerializedName("backdrop_path")
private String backdrop;
public Movie() {}
protected Movie(Parcel in) {
title = in.readString();
poster = in.readString();
description = in.readString();
backdrop = in.readString();
}
public static final Creator<Movie> CREATOR = new Creator<Movie>() {
#Override
public Movie createFromParcel(Parcel in) {
return new Movie(in);
}
#Override
public Movie[] newArray(int size) {
return new Movie[size];
}
};
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getPoster() {
return "http://image.tmdb.org/t/p/w500" + poster;
}
public void setPoster(String poster) {
this.poster = poster;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getBackdrop() {
return "http://image.tmdb.org/t/p/w500" + backdrop;
}
public void setBackdrop(String backdrop) {
this.backdrop = backdrop;
}
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel parcel, int i) {
parcel.writeString(title);
parcel.writeString(poster);
parcel.writeString(description);
parcel.writeString(backdrop);
}
public static class MovieResult {
private List<Movie> results;
public List<Movie> getResults() {
return results;
}
}
}
class detail movie :
public class MovieDetailActivity extends AppCompatActivity {
public static final String EXTRA = "movie";
private Movie mMovie;
ImageView backdrop;
ImageView poster;
TextView title;
TextView description;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_movie_detail);
if (getIntent().hasExtra(EXTRA)) {
mMovie = getIntent().getParcelableExtra(EXTRA);
} else {
throw new IllegalArgumentException("Detail activity must receive a movie parcelable");
}
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
CollapsingToolbarLayout toolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.toolbar_layout);
toolbarLayout.setTitle(mMovie.getTitle());
backdrop = (ImageView) findViewById(R.id.backdrop);
title = (TextView) findViewById(R.id.movie_title);
description = (TextView) findViewById(R.id.movie_description);
poster = (ImageView) findViewById(R.id.movie_poster);
title.setText(mMovie.getTitle());
description.setText(mMovie.getDescription());
Picasso.with(this)
.load(mMovie.getPoster())
.into(poster);
Picasso.with(this)
.load(mMovie.getBackdrop())
.into(backdrop);
}
}
this mainActivity class :
public class MainActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private MoviesAdapter mAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
mRecyclerView.setLayoutManager(new GridLayoutManager(this, 2));
mAdapter = new MoviesAdapter(this);
mRecyclerView.setAdapter(mAdapter);
getPopularMovies();
}
private void getPopularMovies() {
RestAdapter restAdapter = new RestAdapter.Builder()
.setEndpoint("http://api.themoviedb.org/3")
.setRequestInterceptor(new RequestInterceptor() {
#Override
public void intercept(RequestFacade request) {
request.addEncodedQueryParam("api_key", "Key_API");
}
})
.setLogLevel(RestAdapter.LogLevel.FULL)
.build();
MoviesApiService service = restAdapter.create(MoviesApiService.class);
service.getPopularMovies(new Callback<Movie.MovieResult>() {
#Override
public void success(Movie.MovieResult movieResult, Response response) {
mAdapter.setMovieList(movieResult.getResults());
}
#Override
public void failure(RetrofitError error) {
error.printStackTrace();
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public static class MovieViewHolder extends RecyclerView.ViewHolder {
public ImageView imageView;
public MovieViewHolder(View itemView) {
super(itemView);
imageView = (ImageView) itemView.findViewById(R.id.imageView);
}
}
public static class MoviesAdapter extends RecyclerView.Adapter<MovieViewHolder> {
private List<Movie> mMovieList;
private LayoutInflater mInflater;
private Context mContext;
public MoviesAdapter(Context context) {
this.mContext = context;
this.mInflater = LayoutInflater.from(context);
}
#Override
public MovieViewHolder onCreateViewHolder(ViewGroup parent, final int viewType) {
View view = mInflater.inflate(R.layout.row_movie, parent, false);
final MovieViewHolder viewHolder = new MovieViewHolder(view);
view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
int position = viewHolder.getAdapterPosition();
Intent intent = new Intent(mContext, MovieDetailActivity.class);
intent.putExtra(MovieDetailActivity.EXTRA, mMovieList.get(position));
mContext.startActivity(intent);
}
});
return viewHolder;
}
#Override
public void onBindViewHolder(MovieViewHolder holder, int position) {
Movie movie = mMovieList.get(position);
Picasso.with(mContext)
.load(movie.getPoster())
.placeholder(R.color.colorAccent)
.into(holder.imageView);
}
#Override
public int getItemCount() {
return (mMovieList == null) ? 0 : mMovieList.size();
}
public void setMovieList(List<Movie> movieList) {
this.mMovieList = new ArrayList<>();
this.mMovieList.addAll(movieList);
notifyDataSetChanged();
}
}
}
now how can be able to fetch both popular movie data and high-rated movie data from https://developers.themoviedb.org ? can you help me ?
You have a method in your MainActivity called getPopularMovies() where you call service.getPopularMovies(), which uses the MoviesApiService #GET("/movie/popular"). You could create a similar API for high-rated movies, something like:
#GET("/movie/high_rated")
void getHighRatedMovies(Callback<Movie.MovieResult> cb);
Then create a similar getHighRatedMovies() method and depending on what the user selects, make a call to that method. The only difference would be you would call service.getHighRatedMovies instead of service.getPopularMovies().
To simplify the code to just one method, you could make a method called getMovies(), and then at the point when you initialize service.(something), set the correct method call.
I'm migrating from ListView to an RecyclerView and last thing I'm stuck with is updating one of fields. My App has a simple list with some images found on internet. When you choose one, image gets downloaded to a phone for later offline viewing. Adapter gets data from SQLite databaseso when you tap on some image database gets updated (text changes from a "Tap here to Download" to a "Downloaded") and RecyclerView should follow.
I had same problem with ListView but there I just called populateList(); each time App updated db. I know it's not the ideal solution but it worked. Now I want to do it right with notifyDataSetChanged() or even better notifyItemChanged(position) but I can't get it working.
Anyway here's the code, sorry for being a little bit messy. This is just a test code (RecyclerView code is from samples):
public class RecyclerFragment extends Fragment {
private imgAdapter mAdapter;
private DatabaseHandler db;
private ProgressDialog mProgressDialog;
public RecyclerFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
db = new DatabaseHandler(getActivity());
List<Images> listdb = db.getImages();
mAdapter = new ImgAdapter(getActivity(), listdb);
db.close();
View view = inflater.inflate(R.layout.fragment_main, container, false);
RecyclerView recyclerView = (RecyclerView) view.findViewById(android.R.id.list);
recyclerView.addItemDecoration(new DividerItemDecoration(getActivity(), DividerItemDecoration.VERTICAL_LIST));
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new GridLayoutManager(
getActivity(), getResources().getInteger(R.integer.list_columns)));
recyclerView.setAdapter(mAdapter);
return view;
}
private class ImgAdapter extends RecyclerView.Adapter<ViewHolder>
implements ItemClickListener {
public List<Images> mList;
private Context mContext;
public ImgAdapter(Context context, List<Images> listdb) {
super();
mContext = context;
mList = listdb;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(mContext);
View view = inflater.inflate(R.layout.list_row1, parent, false);
return new ViewHolder(view, this);
}
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
Images image = mList.get(position);
holder.mTitle.setText(image.getTitle());
holder.mDownloadStatus.setText(image.getDownloadStatus());
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public int getItemCount() {
return mList == null ? 0 : mList.size();
}
#Override
public void onItemClick(View view, int position) {
switch (position) {
case 0:
Log.v("POSITION 0:", " " + position);
break;
case 1:
/*
some logic nvm
*/
String imgurl = "http:/...";
String imagename = "Second image";
new GetImages(imgurl, imagename).execute();
/*
I've tried mAdapter.notitfy... , no luck aswell
This does nothing:
*/
notifyItemChanged(position);
notifyDataSetChanged();
break;
//....
}
}
}
private static class ViewHolder extends RecyclerView.ViewHolder
implements View.OnClickListener {
TextView mTitle;
TextView mDownloadStatus;
ItemClickListener mItemClickListener;
public ViewHolder(View view, ItemClickListener itemClickListener) {
super(view);
mTitle = (TextView) view.findViewById(R.id.text1);
mDownloadStatus = (TextView) view.findViewById(R.id.text2);
mItemClickListener = itemClickListener;
view.setOnClickListener(this);
}
#Override
public void onClick(View v) {
mItemClickListener.onItemClick(v, getPosition());
}
}
interface ItemClickListener {
void onItemClick(View view, int position);
}
/*
This is my AsyncTask class used for downloading image and updating db
I removed some code just to to make it cleaner
*/
private class GetImages extends AsyncTask<Object, Object, Object> {
private final String requestUrl;
private final String imagename_;
private String imagename;
public int numberofbits;
private GetImages(String requestUrl, String _imagename_) {
this.requestUrl = requestUrl;
this.imagename_ = _imagename_;
}
#Override
protected void onPreExecute() {
super.onPreExecute();
//pDialog...
}
#Override
protected Object doInBackground(Object... objects) {
try {
URL url = new URL(requestUrl);
URLConnection conn = url.openConnection();
bitmap = BitmapFactory.decodeStream(conn.getInputStream());
numberofbits = bitmap.getByteCount();
} catch (Exception ignored) {
}
return null;
}
#Override
protected void onPostExecute(Object o) {
if (!ImageStorage.checkifImageExists(imagename)) {
ImageStorage.saveToSdCard(bitmap, imagename_);
}
if (numberofbits > 50) {
db = new DatabaseHandler(getActivity());
db.updateImages(new Images(dbid, "Downloaded", imagename_));
db.close();
//populateList(); -> THIS I USED FOR A LISTVIEW
Toast.makeText(getActivity(), "Downloaded!", Toast.LENGTH_SHORT).show();
mProgressDialog.dismiss();
//If image gets downloaded open it in Viewer class
Intent intent = new Intent(getActivity(), DisplayImage.class);
intent.putExtra("imagePath", path);
startActivity(intent);
} else {
//Toast.makeText(getActivity(), "Unable to download", Toast.LENGTH_SHORT).show();
mProgressDialog.dismiss();
}
}
}
}
Here's Images class
public class Images {
//private variables
private int _id;
private String _title;
private String _downloadstatus;
// Empty constructor
public Images () {
}
// constructor
public Images(int id, String title, String downloadstatus) {
this._id = id;
this._title = title;
this._downloadstatus = downloadstatus;
}
public int getID() {
return this._id;
}
public void setID(int id) {
this._id = id;
}
public String getTitle() {
return this._title;
}
public void setTitle(String title) {
this._title = title;
}
public String getDownloadStatus() {
return this._downloadstatus;
}
public void setDownloadStatus(String downloadstatus) {
this._downloadstatus = downloadstatus;
}
}
And here's an XML (I'm trying to update "text2"):
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:foreground="?attr/selectableItemBackground"
android:layout_height="wrap_content"
android:padding="8dp">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="match_parent"
>
<TextView
android:id="#+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="#dimen/imagename"
android:textStyle="bold"
android:paddingStart="4sp"
android:paddingEnd="40sp" />
<TextView
android:id="#+id/text2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/text1"
android:textSize="#dimen/downloaded"
android:paddingStart="4sp"
android:paddingEnd="1sp"
android:textColor="#color/graydownloaded" />
</RelativeLayout>
</FrameLayout>
Okay I finally got it working and It was actually quite simple...
//....
if (numberofbits > 50) {
db = new DatabaseHandler(getActivity());
db.updateImages(new Images(dbid, "Downloaded", imagename_));
//This is what I added:
List<Images> listdb = db.getImages();
mAdapter = new ImgAdapter(getActivity(), listdb);
recyclerView.setAdapter(mAdapter);
db.close();
//populateList(); -> THIS I USED FOR A LISTVIEW
Toast.makeText(getActivity(), "Downloaded!", Toast.LENGTH_SHORT).show();
mProgressDialog.dismiss();
//If image gets downloaded open it in Viewer class
Intent intent = new Intent(getActivity(), DisplayImage.class);
intent.putExtra("imagePath", path);
startActivity(intent);
} else {
//...
Try doing this: Override in your adapter the getItemId method like this
#Override
public long getItemId(int position) {
return mList.get(position).getID();
}
And add this line after recyclerView.setHasFixedSize(true) :
recyclerView.setHasStableId(true);
EDIT:
mAdapter.setHasStableId(true);
Let me know if that did the trick.