Recyclerview row position selection color picker

Question

I can change the color of the text and background imageview row imageview my recyclerview in my navigation drawer fragment .

But my problem is that after clicking on the 4th element, the 1st element is also selected. Also, after pressing the 5th element, the 2nd element is selected.

Like this:

How can i solve this? So only one item is selected at a time?

FragmentDrawer.java

 public class FragmentDrawer extends Fragment { private static String TAG = FragmentDrawer.class.getSimpleName(); private RecyclerView recyclerView; private ActionBarDrawerToggle mDrawerToggle; private DrawerLayout mDrawerLayout; private NavigationDrawerAdapter adapter; private View containerView; private static String[] titles = null; private FragmentDrawerListener drawerListener; public FragmentDrawer() { } public void setDrawerListener(FragmentDrawerListener listener) { this.drawerListener = listener; } public static List<NavDrawerItem> getData() { List<NavDrawerItem> data = new ArrayList<>(); int[] icons = {R.drawable.ic_home, R.drawable.ic_upcoming, R.drawable.ic_saved, R.drawable.ic_wehappened, R.drawable.ic_persons, R.drawable.ic_music, R.drawable.ic_parties, R.drawable.ic_art, R.drawable.ic_network, R.drawable.ic_sports}; // preparing navigation drawer items for (int i = 0; i < titles.length && i < icons.length; i++) { NavDrawerItem navItem = new NavDrawerItem(); navItem.setTitle(titles[i]); navItem.setIcon(icons[i]); data.add(navItem); } return data; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // drawer labels titles = getActivity().getResources().getStringArray(R.array.nav_drawer_labels); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflating view layout View layout = inflater.inflate(R.layout.fragment_navigation_drawer, container, false); recyclerView = (RecyclerView) layout.findViewById(R.id.drawerList); adapter = new NavigationDrawerAdapter(getActivity(), getData()); recyclerView.setAdapter(adapter); recyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); List<SimpleSectionedRecyclerViewAdapter.Section> sections = new ArrayList<SimpleSectionedRecyclerViewAdapter.Section>(); //Sections sections.add(new SimpleSectionedRecyclerViewAdapter.Section(5, "Categories")); recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), recyclerView, new ClickListener() { @Override public void onClick(View view, int position) { NavigationDrawerAdapter.selected_item = position; recyclerView.getAdapter().notifyDataSetChanged(); drawerListener.onDrawerItemSelected(view, position); mDrawerLayout.closeDrawer(containerView); } @Override public void onLongClick(View view, int position) { } })); SimpleSectionedRecyclerViewAdapter.Section[] dummy = new SimpleSectionedRecyclerViewAdapter.Section[sections.size()]; SimpleSectionedRecyclerViewAdapter mSectionedAdapter = new SimpleSectionedRecyclerViewAdapter(getContext(), R.layout.section, R.id.section_text, adapter); mSectionedAdapter.setSections(sections.toArray(dummy)); //Apply this adapter to the RecyclerView recyclerView.setAdapter(mSectionedAdapter); return layout; } public void setUp(int fragmentId, DrawerLayout drawerLayout, final Toolbar toolbar) { containerView = getActivity().findViewById(fragmentId); mDrawerLayout = drawerLayout; mDrawerToggle = new ActionBarDrawerToggle(getActivity(), drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) { @Override public void onDrawerOpened(View drawerView) { super.onDrawerOpened(drawerView); getActivity().invalidateOptionsMenu(); } @Override public void onDrawerClosed(View drawerView) { super.onDrawerClosed(drawerView); getActivity().invalidateOptionsMenu(); } @Override public void onDrawerSlide(View drawerView, float slideOffset) { super.onDrawerSlide(drawerView, slideOffset); toolbar.setAlpha(1 - slideOffset / 2); } }; mDrawerLayout.setDrawerListener(mDrawerToggle); mDrawerLayout.post(new Runnable() { @Override public void run() { mDrawerToggle.syncState(); } }); } public static interface ClickListener { public void onClick(View view, int position); public void onLongClick(View view, int position); } static class RecyclerTouchListener implements RecyclerView.OnItemTouchListener { private GestureDetector gestureDetector; private ClickListener clickListener; public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) { this.clickListener = clickListener; gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() { @Override public boolean onSingleTapUp(MotionEvent e) { return true; } @Override public void onLongPress(MotionEvent e) { View child = recyclerView.findChildViewUnder(e.getX(), e.getY()); if (child != null && clickListener != null) { clickListener.onLongClick(child, recyclerView.getChildPosition(child)); } } }); } @Override public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) { View child = rv.findChildViewUnder(e.getX(), e.getY()); if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) { clickListener.onClick(child, rv.getChildPosition(child)); } return false; } @Override public void onTouchEvent(RecyclerView rv, MotionEvent e) { } @Override public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) { } } public interface FragmentDrawerListener { public void onDrawerItemSelected(View view, int position); } } 

NavigationDrawerAdapter.java

 public class NavigationDrawerAdapter extends RecyclerView.Adapter<NavigationDrawerAdapter.MyViewHolder> { List<NavDrawerItem> data = Collections.emptyList(); private LayoutInflater inflater; private Context context; public static int selected_item = 0; public NavigationDrawerAdapter(Context context, List<NavDrawerItem> data) { this.context = context; inflater = LayoutInflater.from(context); this.data = data; } public void delete(int position) { data.remove(position); notifyItemRemoved(position); } @Override public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = inflater.inflate(R.layout.nav_drawer_row, parent, false); MyViewHolder holder = new MyViewHolder(view); return holder; } @Override public void onBindViewHolder(MyViewHolder holder, int position) { if(position == selected_item) { holder.title.setTextColor(Color.parseColor("#00aaff")); holder.imgViewIcon.setBackgroundResource(R.drawable.ic_circle); } NavDrawerItem current = data.get(position); holder.title.setText(current.getTitle()); holder.imgViewIcon.setImageResource(current.getIcon()); } @Override public int getItemCount() { return data.size(); } class MyViewHolder extends RecyclerView.ViewHolder { TextView title; public ImageView imgViewIcon; public MyViewHolder(View itemView) { super(itemView); title = (TextView) itemView.findViewById(R.id.title); imgViewIcon = (ImageView) itemView.findViewById(R.id.item_icon); } } } 

EDIT: SimpleSectionedRecyclerViewAdapter.java

 public class SimpleSectionedRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { private final Context mContext; private static final int SECTION_TYPE = 0; private boolean mValid = true; private int mSectionResourceId; private int mTextResourceId; private LayoutInflater mLayoutInflater; private RecyclerView.Adapter mBaseAdapter; private SparseArray<Section> mSections = new SparseArray<Section>(); public SimpleSectionedRecyclerViewAdapter(Context context, int sectionResourceId, int textResourceId, RecyclerView.Adapter baseAdapter) { mLayoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); mSectionResourceId = sectionResourceId; mTextResourceId = textResourceId; mBaseAdapter = baseAdapter; mContext = context; mBaseAdapter.registerAdapterDataObserver(new RecyclerView.AdapterDataObserver() { @Override public void onChanged() { mValid = mBaseAdapter.getItemCount()>0; notifyDataSetChanged(); } @Override public void onItemRangeChanged(int positionStart, int itemCount) { mValid = mBaseAdapter.getItemCount()>0; notifyItemRangeChanged(positionStart, itemCount); } @Override public void onItemRangeInserted(int positionStart, int itemCount) { mValid = mBaseAdapter.getItemCount()>0; notifyItemRangeInserted(positionStart, itemCount); } @Override public void onItemRangeRemoved(int positionStart, int itemCount) { mValid = mBaseAdapter.getItemCount()>0; notifyItemRangeRemoved(positionStart, itemCount); } }); } public static class SectionViewHolder extends RecyclerView.ViewHolder { public TextView title; public SectionViewHolder(View view,int mTextResourceid) { super(view); title = (TextView) view.findViewById(mTextResourceid); } } @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int typeView) { if (typeView == SECTION_TYPE) { final View view = LayoutInflater.from(mContext).inflate(mSectionResourceId, parent, false); return new SectionViewHolder(view,mTextResourceId); }else{ return mBaseAdapter.onCreateViewHolder(parent, typeView -1); } } @Override public void onBindViewHolder(RecyclerView.ViewHolder sectionViewHolder, int position) { if (isSectionHeaderPosition(position)) { ((SectionViewHolder)sectionViewHolder).title.setText(mSections.get(position).title); }else{ mBaseAdapter.onBindViewHolder(sectionViewHolder,sectionedPositionToPosition(position)); } } @Override public int getItemViewType(int position) { return isSectionHeaderPosition(position) ? SECTION_TYPE : mBaseAdapter.getItemViewType(sectionedPositionToPosition(position)) +1 ; } public static class Section { int firstPosition; int sectionedPosition; CharSequence title; public Section(int firstPosition, CharSequence title) { this.firstPosition = firstPosition; this.title = title; } public CharSequence getTitle() { return title; } } public void setSections(Section[] sections) { mSections.clear(); Arrays.sort(sections, new Comparator<Section>() { @Override public int compare(Section o, Section o1) { return (o.firstPosition == o1.firstPosition) ? 0 : ((o.firstPosition < o1.firstPosition) ? -1 : 1); } }); int offset = 0; // offset positions for the headers we're adding for (Section section : sections) { section.sectionedPosition = section.firstPosition + offset; mSections.append(section.sectionedPosition, section); ++offset; } notifyDataSetChanged(); } public int positionToSectionedPosition(int position) { int offset = 0; for (int i = 0; i < mSections.size(); i++) { if (mSections.valueAt(i).firstPosition > position) { break; } ++offset; } return position + offset; } public int sectionedPositionToPosition(int sectionedPosition) { if (isSectionHeaderPosition(sectionedPosition)) { return RecyclerView.NO_POSITION; } int offset = 0; for (int i = 0; i < mSections.size(); i++) { if (mSections.valueAt(i).sectionedPosition > sectionedPosition) { break; } --offset; } return sectionedPosition + offset; } public boolean isSectionHeaderPosition(int position) { return mSections.get(position) != null; } @Override public long getItemId(int position) { return isSectionHeaderPosition(position) ? Integer.MAX_VALUE - mSections.indexOfKey(position) : mBaseAdapter.getItemId(sectionedPositionToPosition(position)); } @Override public int getItemCount() { return (mValid ? mBaseAdapter.getItemCount() + mSections.size() : 0); } } 

Answer 1

Change the onBindViewHolder method of your NavigationDrawerAdapter.java to the following:

 @Override public void onBindViewHolder(MyViewHolder holder, int position) { if(position == selected_item) { holder.title.setTextColor(Color.parseColor("#00aaff")); holder.imgViewIcon.setBackgroundResource(R.drawable.ic_circle); } else { holder.title.setTextColor(Color.parseColor("#00000")); //actually you should set to the normal text color holder.imgViewIcon.setBackgroundResource(0); } NavDrawerItem current = data.get(position); holder.title.setText(current.getTitle()); holder.imgViewIcon.setImageResource(current.getIcon()); } 

Answer 2

You can use the class to view the Recycler TouchListener.

  class RecyclerTouchListener implements RecyclerView.OnItemTouchListener{ private ClickListener clicklistener; private GestureDetector gestureDetector; public RecyclerTouchListener(Context context, final RecyclerView recycleView, final ClickListener clicklistener){ this.clicklistener=clicklistener; gestureDetector=new GestureDetector(context,new GestureDetector.SimpleOnGestureListener(){ @Override public boolean onSingleTapUp(MotionEvent e) { return true; } @Override public void onLongPress(MotionEvent e) { View child=recycleView.findChildViewUnder(e.getX(),e.getY()); if(child!=null && clicklistener!=null){ clicklistener.onLongClick(child,recycleView.getChildAdapterPosition(child)); } } }); } @Override public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) { View child=rv.findChildViewUnder(e.getX(),e.getY()); RecyclerView.ViewHolder viewHolder=rv.findContainingViewHolder(child); if(child!=null && clicklistener!=null && gestureDetector.onTouchEvent(e)){ clicklistener.onClick(child,rv.getChildAdapterPosition(child),viewHolder); } return false; } @Override public void onTouchEvent(RecyclerView rv, MotionEvent e) { } @Override public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) { } } } 

Implement interface

 public interface ClickListener{ public void onClick(View view, int position,RecyclerView.ViewHolder viewHolder); public void onLongClick(View view, int position); } 

And in your main activity (here I installed the Image resource, which you can install as you like, Anything)

Create an arraylist named "selected" as Integer and add the following code as OnClickListener

 recyclerViewSchedule.addOnItemTouchListener(new RecyclerTouchListener(this, recyclerViewSchedule, new ClickListener() { @Override public void onClick(View view, final int position, RecyclerView.ViewHolder v) { //Values are passing to activity & to fragment as well if(!selected.contains(position)) { selected.add(position); ((ScheduleAdapter.MyHolder) v).txtImage.setBackgroundColor(getResources().getColor(R.color.colorAccent)); }else { ((ScheduleAdapter.MyHolder) v).txtImage.setBackgroundColor(getResources().getColor(R.color.colorTransparent)); selected.remove(new Integer(position)); } Toast.makeText(ScheduleActivity.this, "Single Click on position :"+position, Toast.LENGTH_SHORT).show(); } Toast.makeText(ScheduleActivity.this, "Single Click on position :"+position, Toast.LENGTH_SHORT).show(); } @Override public void onLongClick(View view, int position) { Toast.makeText(ScheduleActivity.this, "Long press on position :"+position, Toast.LENGTH_LONG).show(); } })); 

The txtImage specified here is a RecyclerAdapter, replace it with your view

Happy coding :-)

Answer 3

Simple and best

Internal adapter class

 int row_index=0; 

inside onBindViewHOlder

 holder.titleLL.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { row_index=position; notifyDataSetChanged(); } }); if (row_index==position) { holder.title.setTextColor(Color.RED); } else { holder.title.setTextColor(Color.BLACK); }