Develop Reference

How to manage multiple positions in RecyclerView OnClickListener

I want to know how I can get access to other elements of the array in this onclicklistener for a Recycler view. Specifically, I want to be able to change the enabled state of a position other than the current Listener position, but within the click event.
I'm trying to make it such that if three colors are checked (those are check boxes) every box not checked will be disabled until the number of boxes checked is < 3.
The for-loops I have I wrote make sense, but I can't programmatically change the enabled state within the onClickListener for some reason.
private void buildRecyclerView() {
mRecyclerView = findViewById(R.id.recyclerView);
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(this);
mAdapter = new ExampleAdapter(mExampleList);
mRecyclerView.setLayoutManager(mLayoutManager);
mRecyclerView.setAdapter(mAdapter);
mAdapter.setOnItemClickListener(new ExampleAdapter.OnItemClickListener() {
#Override
public void onItemClick(int position) {
boolean checkedState;
if (mExampleList.get(position).getChecked1() == false) {
checkedState = true;
} else {
checkedState = false;
}
changeItem(position, checkedState);
int sum = 0;
for (int i = 0; i < stringArray.length; i++) {
Boolean checked = mExampleList.get(i).getChecked1();
if (checked == true) {
sum = sum + 1;
}
}
for (int i = 0; i < stringArray.length; i++) {
Boolean checked = mExampleList.get(i).getChecked1();
if (!checked && sum == 3) {
mExampleList.get(i).setEnabled1(false);
} else {
mExampleList.get(i).setEnabled1(true);
}
}
}
});
}
adapter
public class ExampleAdapter extends RecyclerView.Adapter<ExampleAdapter.ExampleViewHolder> {
private ArrayList<ExampleItem> mExampleList;
private OnItemClickListener mListener;
public interface OnItemClickListener {
void onItemClick(int position);
}
public void setOnItemClickListener(OnItemClickListener listener) {
mListener = listener;
}
public static class ExampleViewHolder extends RecyclerView.ViewHolder {
public CheckBox mCheckBox;
public ExampleViewHolder(#NonNull View itemView, final OnItemClickListener listener) {
super(itemView);
mCheckBox = itemView.findViewById(R.id.checkBox);
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (listener != null){
int position = getAdapterPosition();
if (position != RecyclerView.NO_POSITION);
listener.onItemClick(position);
}
}
});
}
}
public ExampleAdapter(ArrayList<ExampleItem> exampleList) {
mExampleList = exampleList;
}
#NonNull
#Override
public ExampleViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.example_item, parent, false);
ExampleViewHolder evh = new ExampleViewHolder(v, mListener);
return evh;
}
#Override
public void onBindViewHolder(#NonNull ExampleViewHolder holder, int position) {
ExampleItem currentItem = mExampleList.get(position);
holder.mCheckBox.setText(currentItem.getCheckText());
holder.mCheckBox.setEnabled(currentItem.getEnabled1());
holder.mCheckBox.setChecked(currentItem.getChecked1());
}
#Override
public int getItemCount() {
return mExampleList.size();
}
}
Item Class
public class ExampleItem {
public String mCheckText;
public Boolean mEnabled;
public Boolean mChecked;
public ExampleItem(String mCheckText, Boolean mEnabled, Boolean mChecked) {
this.mCheckText = mCheckText;
this.mEnabled = mEnabled;
this.mChecked = mChecked;
}
public ExampleItem(String mCheckText) {
this.mCheckText = mCheckText;
}
public String getCheckText() {
return mCheckText;
}
public void setCheckText(String mCheckText) {
this.mCheckText = mCheckText;
}
public Boolean getEnabled1() {
return mEnabled;
}
public void setEnabled1(Boolean mEnabled) {
this.mEnabled = mEnabled;
}
public Boolean getChecked1() {
return mChecked;
}
public void setChecked1(Boolean mChecked) {
this.mChecked = mChecked;
}
}
In other words, I am trying to make everything below blue disabled until I uncheck Red, Green, or Blue!

Try the following:
In adapter, add below codes:
private int selectedCount = 0;
public int getSelectedCount() {
return selectedCount;
}
public void setSelectedCount(int selectedCount) {
this.selectedCount = selectedCount;
notifyDataSetChanged();
}
and change onBindViewHolder() to:
#Override
public void onBindViewHolder(#NonNull ExampleViewHolder holder, int position) {
ExampleItem currentItem = mExampleList.get(position);
holder.mCheckBox.setText(currentItem.getCheckText());
holder.mCheckBox.setChecked(currentItem.getChecked1());
if ((selectedCount == 3)) holder.mCheckBox.setEnabled(currentItem.getChecked1());
else holder.mCheckBox.setEnabled(true);
}
Then in Activity/Fragment, change mAdapter.setOnItemClickListener(new ExampleAdapter.OnItemClickListener()... to:
mAdapter.setOnItemClickListener(new ExampleAdapter.OnItemClickListener() {
#Override
public void onItemClick(int position) {
boolean checkedState;
int selectedCount = mAdapter.getSelectedCount();
if ((selectedCount != 3) || (mExampleList.get(position).getChecked1())) {
if (mExampleList.get(position).getChecked1() == false) {
checkedState = true;
selectedCount++;
} else {
checkedState = false;
selectedCount--;
}
changeItem(position, checkedState);
mAdapter.setSelectedCount(selectedCount);
}
}
});
Pls note that no need to have mEnabled field in the ExampleItem class. Hope that helps!
Explanantion:
About the onClick:- This is because CheckBox totally covered the layout, so itemView cannot recieve the click event. About RecyclerView:- The idea is simple, after modified the data set [not list, here I refer to the mExampleList and also the selectedCount], then call notifyDataSetChanged() which will redraw all recycler item views.

You would need to create a setter function for your 'mExampleList' in your Adpater class, to update the dataset that the adapter is using. It obviously does not change anything, if you make changes to 'mExampleList' in your activity, without updating the list used by the Adapter.
So at the end of your click listener you would have something like that:
mAdapter.setExampleList(mExampleList)
mAdapter.notifyDataSetChanged()

How to display the Auto Scrolling RecyclerView position on TextView?

I am doing an app which auto-scrolls images, at the bottom of the screen there is a static layout, which I need to display the value of images that have already passed (i.e. position).
I get the correct value of images passed by implementing :
int position = holder.getAdapterPosition();
in the RecyclerViewListAdapter.java
now I need to display this value in the RecyclerViewListActivity.java
on a text view at the static layout beneath the Recycler view?
public class RecyclerViewListAdapter extends RecyclerView.Adapter {
Context context;
List<Data> dataList;
private SharedPreferences preferences;
public RecyclerViewListAdapter(Context context, List<Data> dataList) {
this.context = context;
this.dataList = dataList;
}
#Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.adapter_recycler_list, parent, false);
return new MyViewHolder(itemView);
}
#Override
public void onBindViewHolder(final MyViewHolder holder, final int position) {
holder.mImage.setImageResource(dataList.get(position).getImage());
holder.mImage.setImageResource(dataList.get(position).getImage());
**int position = holder.getAdapterPosition();**
}
#Override
public int getItemCount() {
if (dataList == null || dataList.size() == 0)
return 0;
return dataList.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder {
TextView mNumberText,mText;
ImageView mImage;
LinearLayout mLinearLayout;
public MyViewHolder(View itemView) {
super(itemView);
mImage = (ImageView) itemView.findViewById(R.id.quran_page);
mLinearLayout = (LinearLayout) itemView.findViewById(R.id.linearLayout);
}
}
}
public class RecyclerViewListActivity extends AppCompatActivity {
RecyclerView mListRecyclerView;
ArrayList<Data> dataArrayList;
RecyclerViewListAdapter recyclerViewListAdapter ;
Runnable updater;
private boolean isTouch = false;
TextViewRemaining;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_recycler_view_list);
final TextView TextViewRemaining = (TextView) findViewById(R.id.TextViewRemaining);
**TextViewRemaining.setText("Position: "+position);**
initializeView();
mListRecyclerView.addOnItemTouchListener(new RecyclerTouchListener(this,
mListRecyclerView, new ClickListener() {
#Override
public void onClick(View view, int position) {
}
#Override
public void onLongClick(View view, int position) {
Toast.makeText(RecyclerViewListActivity.this, "Long press on position :" + position,
Toast.LENGTH_LONG).show();
}
}));
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
return super.onOptionsItemSelected(item);
}
public static interface ClickListener{
public void onClick(View view,int position);
public void onLongClick(View view,int position);
}
class RecyclerTouchListener implements RecyclerView.OnItemTouchListener{
private ClickListener clicklistener;
private GestureDetector gestureDetector;
//#RequiresApi(api = Build.VERSION_CODES.CUPCAKE)
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());
if(child!=null && clicklistener!=null && gestureDetector.onTouchEvent(e)){
clicklistener.onClick(child,rv.getChildAdapterPosition(child));
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
}
private void initializeView()
{
mListRecyclerView = (RecyclerView) findViewById(R.id.vR_recyclerViewList);
setValues();
}
private void setValues(){
prepareData();
recyclerViewListAdapter = new RecyclerViewListAdapter(RecyclerViewListActivity.this,dataArrayList);
mListRecyclerView.setLayoutManager(new LinearLayoutManager(RecyclerViewListActivity.this)); // original
mListRecyclerView.setItemAnimator(new DefaultItemAnimator());
mListRecyclerView.setHasFixedSize(false);
mListRecyclerView.setAdapter(recyclerViewListAdapter);
recyclerViewListAdapter.notifyDataSetChanged();
final int speedScroll = 2000; //default is 2000 it need to be 30000
final Handler handler = new Handler();
final Runnable runnable = new Runnable() {
int count = 0;
// boolean flag = true;
#Override
public void run() {
boolean x=true;
// while(x) {
if (count < recyclerViewListAdapter.getItemCount()) {
if (count == recyclerViewListAdapter.getItemCount() - 1) {
flag = false;
} else if (count == 0) {
flag = true;
}
}
if (flag) count++;
// else count--;
mListRecyclerView.smoothScrollToPosition(count);
handler.postDelayed(this, speedScroll);
}
};
handler.postDelayed(runnable,speedScroll);
}
private void prepareData(){
dataArrayList = new ArrayList<>();
Data data1 = new Data();
data1.setImage(R.drawable.p1);
dataArrayList.add(data1);
Data data2 = new Data();
data2.setImage(R.drawable.p2);
dataArrayList.add(data2);
Data data3 = new Data();
data3.setImage(R.drawable.p3);
dataArrayList.add(data3);
Data data4 = new Data();
data4.setImage(R.drawable.p4);
dataArrayList.add(data4);
Data data5 = new Data();
data5.setImage(R.drawable.p5);
dataArrayList.add(data5);
}
}
So, How can I show the position value on textView in a real-time, as position is a dynamic value, I expect the output on the textView to change as the images passed to the top.
Many Thanks in advance.

This how I solve my problem:
I save the position value in a power Preference(an easier version of shared Preferences)-many thanks to:
Ali Asadi(https://android.jlelse.eu/powerpreference-a-simple-approach-to-store-data-in-android-a2dad4ddc4ac)
I use a Thread that updates the textview every second-many thanks to:
https://www.youtube.com/watch?v=6sBqeoioCHE&t=149s
Thanks for all.

In Recycle view how to Highlight always one adapter item with the click and without click

Here I clicked on the item to change item background and color. I've stored the clicked item value in the database and change the layout color and text color and recreating the adapter and showing the list again while refreshing.
But layout colors not changed when I get its position. Please show the right path to handle the set of background item color always.
public class LoadVehicleTypeAdapter extends RecyclerView.Adapter<LoadVehicleTypeAdapter.CarTypesHolder> {
private List<TaxiTypeResponse.Message> CarTypesModelsList;
private Context mContext;
VehicleTypeView vehicleTypeView;
int I = -1;
int idd = 0;
int II = 0;
Activity activity;
GoogleMap map;
List<VehicleClick> list;
private SparseBooleanArray selectedItems;
public class CarTypesHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public CustomTextView mCarType;
public CircleImageView mCarTypeImage;
LinearLayout llRoot;
CardView cardView;
setOnitemclick listener;
public void setOnItemClickListner(setOnitemclick listener) {
this.listener = listener;
}
public CarTypesHolder(View view) {
super(view);
mCarType = (CustomTextView) view.findViewById(R.id.frag_cartypes_inflated_name);
mCarTypeImage = (CircleImageView) view.findViewById(R.id.frag_cartype_inflated_frameImage);
llRoot = (LinearLayout) view.findViewById(R.id.root1);
selectedItems = new SparseBooleanArray();
view.setOnClickListener(this);
}
#Override
public void onClick(View v) {
listener.ImageClick(v, getAdapterPosition());
}
}
public LoadVehicleTypeAdapter(Context context, List<TaxiTypeResponse.Message> CarTypesModelsList, VehicleTypeView vehicleTypeView, Activity activity, GoogleMap map, List<VehicleClick> lists) {
this.CarTypesModelsList = CarTypesModelsList;
mContext = context;
this.vehicleTypeView = vehicleTypeView;
this.activity = activity;
this.map = map;
this.list = lists;
}
#Override
public CarTypesHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.frag_cartype_inflated_view, parent, false);
return new CarTypesHolder(itemView);
}
#SuppressLint("ResourceType")
#Override
public void onBindViewHolder(final CarTypesHolder holder, int position) {
if (list.size() != 0) {
II = Integer.parseInt(list.get(0).RideId);
//setSelection(Integer.parseInt(list.get(0).RideId));
}
if (II == position) {
holder.llRoot.setBackgroundColor(Color.parseColor("#999999"));
holder.mCarType.setTextColor(Color.parseColor("#FFFFFF"));
} else {
holder.llRoot.setBackgroundColor(Color.parseColor("#f3f3f3"));
holder.mCarType.setTextColor(Color.parseColor("#2196F3"));
}
SharedPreferences sharedPreferences = activity.getSharedPreferences("mSelected", Context.MODE_PRIVATE);
TaxiTypeResponse.Message carTypesModel = CarTypesModelsList.get(position);
holder.mCarType.setText(carTypesModel.getName());
holder.mCarTypeImage.setBackgroundResource(R.drawable.wait);
int color = Color.parseColor(PreferenceHandler.readString(mContext, PreferenceHandler.SECONDRY_COLOR, "#006fb6"));
holder.mCarType.setTextColor(color);
holder.setOnItemClickListner(new setOnitemclick() {
#Override
public void ImageClick(View v, int position1) {
I = position1;
notifyDataSetChanged();
try {
if (list.size() != 0) {
VehicleTypeFragment.myAppRoomDataBase.userDao().delete();
list.clear();
}
VehicleClick vehicleClick = new VehicleClick();
vehicleClick.setRideId(String.valueOf(position1));
VehicleTypeFragment.myAppRoomDataBase.userDao().insert(vehicleClick);
list.add(vehicleClick);
} catch (Exception e) {
}
}
});
if (I == position) {
holder.llRoot.setBackgroundColor(Color.parseColor("#999999"));
holder.mCarType.setTextColor(Color.parseColor("#ffffff"));
Animation bounce = AnimationUtils.loadAnimation(mContext, R.anim.bounce);
holder.llRoot.startAnimation(bounce);
} else {
holder.llRoot.setBackgroundColor(Color.parseColor("#f3f3f3"));
holder.mCarType.setTextColor(Color.parseColor("#2196F3"));
}
Picasso.with(mContext).load(carTypesModel.getImagePath()).into(holder.mCarTypeImage);
}
#Override
public long getItemId(int position) {
return CarTypesModelsList.get(position).getID();
}
#Override
public int getItemCount() {
return CarTypesModelsList.size();
}
public void setSelection(int position) {
II = position;
//notifyDataSetChanged();
}
public interface setOnitemclick {
void ImageClick(View view, int position);
}
#Override
public int getItemViewType(int position) {
return position;
}
}

I am not sure what did you mean by refreshing your list. I am guessing that you are recreating the adapter and showing the list again while you are refreshing. Hence the value of I is initialized with -1 each time you are creating the adapter.
You need to do the initialization as follows. Please consider the following is a pseudo code and you need to implement this of your own.
// While declaring your I
// int I = -1;
int I = getTheStoredValueFromDatabase(); // If there is no entry in database, getTheStoredValueFromDatabase function will return -1
I hope you get the idea. You might consider doing the same for other stored values.

for keep track record you need to add Boolean variable in TaxiTypeResponse.Message boolean isClick=false; and toggle this in
holder.setOnItemClickListner(new setOnitemclick() {
#Override
public void ImageClick(View v, int position) {
CarTypesModelsList.get(position).isClick=!CarTypesModelsList.get(position).isClick;
notifyDataSetChanged();
}
}
and modify below code as follow
if (CarTypesModelsList.get(position).isClick) {
holder.llRoot.setBackgroundColor(Color.parseColor("#999999"));
holder.mCarType.setTextColor(Color.parseColor("#ffffff"));
Animation bounce = AnimationUtils.loadAnimation(mContext, R.anim.bounce);
holder.llRoot.startAnimation(bounce);
}
else{
holder.llRoot.setBackgroundColor(Color.parseColor("#f3f3f3"));
holder.mCarType.setTextColor(Color.parseColor("#2196F3"));
}

Note: onBindViewHolder() is not a place to implement the click
listeners, but I am just providing you the logic for how to implement
single selection in recyclerView.
Now lets jump to the solution,
simply follow the below tutorial and change the variable, fields, and background according to your need, you have to implement the below method in onBindViewHolder() method of RecyclerView
First, initialize the lastClickedPosition and isclicked
int lastPositionClicked = -1;
boolean isClicked = false;
#Override
public void onBindViewHolder(#NonNull final MyViewHolder holder, final int position) {
holder.YOUR_VIEW.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// store the position which you have just clicked and you will change the background of this clicked view
lastPositionClicked = position;
isClicked = true;
// need to refresh the adapter
SlabAdapter.this.notifyDataSetChanged();
}
});
// only change the background of last clicked item
if (isClicked && position == lastPositionClicked) {
// change clicked view background color
} else {
// otherwise set the default color for all positions
}
}
let me know if this works.

on BindViewHolder method you'll use this code and set I=0 on globally
#SuppressLint("ResourceType")
#Override
public void onBindViewHolder(final CarTypesHolder holder, int position) {
SharedPreferences sharedPreferences = activity.getSharedPreferences("mSelected", Context.MODE_PRIVATE);
TaxiTypeResponse.Message carTypesModel = CarTypesModelsList.get(position);
holder.mCarType.setText(carTypesModel.getName());
holder.mCarTypeImage.setBackgroundResource(R.drawable.wait);
int color = Color.parseColor(PreferenceHandler.readString(mContext, PreferenceHandler.SECONDRY_COLOR, "#006fb6"));
holder.mCarType.setTextColor(color);
holder.setOnItemClickListner(new setOnitemclick() {
#Override
public void ImageClick(View v, int position1) {
I = position1;
notifyDataSetChanged();
try {
if (list.size() != 0) {
VehicleTypeFragment.myAppRoomDataBase.userDao().delete();
list.clear();
}
VehicleClick vehicleClick = new VehicleClick();
vehicleClick.setRideId(String.valueOf(position1));
VehicleTypeFragment.myAppRoomDataBase.userDao().insert(vehicleClick);
list.add(vehicleClick);
} catch (Exception e) {
}
}
});
if (I == position) {
holder.llRoot.setBackgroundColor(Color.parseColor("#999999"));
holder.mCarType.setTextColor(Color.parseColor("#ffffff"));
Animation bounce = AnimationUtils.loadAnimation(mContext, R.anim.bounce);
holder.llRoot.startAnimation(bounce);
} else {
holder.llRoot.setBackgroundColor(Color.parseColor("#f3f3f3"));
holder.mCarType.setTextColor(Color.parseColor("#2196F3"));
}
Picasso.with(mContext).load(carTypesModel.getImagePath()).into(holder.mCarTypeImage);
}

Checkbox refreshing in false when I use notifyDataSetChanged();

My problem is the one wrote on the title, I have a recyclerview with checkboxes and radiobuttons before I started to use the notifyDataSetChanged() (because I need to update the recyclerview) the checkboxes and radiobuttons were been checked, but now the checks don't work. (I think that it work but it becomes false instantly)
I am sure of this because if I comment the line of notifyDataSetChanged() then it still working as well.
Do you guys know how to fix it?
Java for the adapter Class:
public class OptionModesAdapter extends RecyclerView.Adapter<OptionModesAdapter.ViewHolder> {
private int fatherMode;
private int fatherId;
private Context context;
private AsyncAdapters asyncAdapters;
private ArrayList<Modes> modes;
private ArrayList<Modes> selected;
private ArrayList<IUrbanRadioButton> radiosSelected;
OptionModesAdapter(ArrayList<Modes> modes, Context context, int fatherMode, AsyncAdapters asyncAdapters) {
this.modes = modes;
this.context = context;
this.fatherMode = fatherMode;
this.selected = new ArrayList<>();
this.asyncAdapters = asyncAdapters;
this.radiosSelected = new ArrayList<>();
}
class ViewHolder extends RecyclerView.ViewHolder {
private CheckBox cbOptionMode;
private IUrbanRadioButton rbOptionMode;
ViewHolder(View itemView) {
super(itemView);
cbOptionMode = itemView.findViewById(R.id.cb_option_mode);
rbOptionMode = itemView.findViewById(R.id.rb_option_mode);
}
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View myView = LayoutInflater.from(parent.getContext()).inflate(R.layout.option_modes, parent, false);
return new OptionModesAdapter.ViewHolder(myView);
}
#Override
public void onBindViewHolder(#NonNull ViewHolder holder, int position) {
switch (fatherMode) {
case 0:
holder.rbOptionMode.setVisibility(View.VISIBLE);
holder.cbOptionMode.setVisibility(View.GONE);
holder.rbOptionMode.setText(modes.get(position).getTranslationName(context));
holder.rbOptionMode.setParentName(String.valueOf(modes.get(position).getIdFather()));
onClickRadioButton(holder.rbOptionMode, position);
break;
case 1:
holder.cbOptionMode.setVisibility(View.VISIBLE);
holder.rbOptionMode.setVisibility(View.GONE);
holder.cbOptionMode.setText(modes.get(position).getTranslationName(context));
onClickCheckBox(holder.cbOptionMode, position);
break;
default:
Log.e(CustomConstants.EXCEPTION, "OptionModesAdapter: ln 72. Esto no es un modo admitido");
break;
}
}
private void onClickCheckBox(final CheckBox checkBox, final int position) {
checkBox.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (selectedContainsCB(checkBox)) {
removeOldCb(checkBox);
} else {
addNewCb(checkBox);
}
fatherId = modes.get(position).getIdFather();
asyncAdapters.onInnerClicked(selected, false, fatherId);
}
});
}
private boolean selectedContainsCB(CheckBox checkBox) {
Modes newMode = findModeByCheckBox(checkBox);
return selected.contains(newMode);
}
private Modes findModeByCheckBox(CheckBox checkBox) {
Modes modeToReturn = new Modes();
for (Modes currentMode : modes) {
if (currentMode.getTranslationName(context).equals(checkBox.getText().toString())) {
modeToReturn = currentMode;
break;
}
}
return modeToReturn;
}
private void removeOldCb(CheckBox checkBox) {
Modes modeToRemove = findModeByCheckBox(checkBox);
checkBox.setChecked(false);
selected.remove(modeToRemove);
}
private void addNewCb(CheckBox checkBox) {
Modes modeToAdd = findModeByCheckBox(checkBox);
checkBox.setChecked(true);
selected.add(modeToAdd);
}
private void onClickRadioButton(final IUrbanRadioButton iUrbanRadioButton, final int position) {
iUrbanRadioButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
settingFalseAllRadios();
deletingAllModesRadios();
addNewRb(iUrbanRadioButton);
radiosSelected.add(iUrbanRadioButton);
iUrbanRadioButton.setChecked(true);
fatherId = modes.get(position).getIdFather();
asyncAdapters.onInnerClicked(selected, true, fatherId);
}
});
}
private void settingFalseAllRadios() {
for (IUrbanRadioButton iUrbanRadioButton : radiosSelected) {
iUrbanRadioButton.setChecked(false);
}
radiosSelected.clear();
}
private void deletingAllModesRadios() {
selected.clear();
}
private Modes findModeByRadioButton(IUrbanRadioButton iUrbanRadioButton) {
Modes modeToReturn = new Modes();
for (Modes currentMode : modes) {
if (currentMode.getTranslationName(context).equals(iUrbanRadioButton.getText().toString())) {
modeToReturn = currentMode;
break;
}
}
return modeToReturn;
}
private void addNewRb(IUrbanRadioButton iUrbanRadioButton) {
Modes modeToAdd = findModeByRadioButton(iUrbanRadioButton);
selected.add(modeToAdd);
}
#Override
public int getItemCount() {
return modes.size();
}
}
Thank you in advance.

Ok guys, I just to solve that, I was calling notifyDataSetChanged() from the class which contain the Adapter. This is because the recyclerView were refreshing all the times and the checkboxes and radiobuttons don't be printed as checked.
The solution that works to me is calling the notifyDataSetChanged() inside the recyclerView. Just like this:
checkBox.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//My code...
notifyDataSetChanged();
}
});

How to add sections for checked and unchecked items in recyclerview?

I have a list of tasks in recyclerview. Each task item has a check box to show if the task is completed or pending.
Now I want to show two sections in my list. One for checked items and another for unchecked items.
I have gone through this library to add the sections.
https://github.com/afollestad/sectioned-recyclerview
But how can I divide the items in list on the basis of they are checked or not?
Also I want to add the task into another section if checked or unchecked , i.e onClick.
If task is unchecked, and if I check it, it should get added to the completed section and vise versa.
I have a recyclerview now with swipe layout. Following is the adapter.
adapetr:
public class IAdapter extends RecyclerSwipeAdapter<IAdapter.ItemViewHolder> , SectionedRecyclerViewAdapter<IAdapter.ItemViewHolder> {
public ArrayList<Task> items;
Context conext;
public int _mId;
List<Task> itemsPendingRemoval = new ArrayList<>();
public IAdapter(Context context, ArrayList<Task> item) {
this.conext=context;
this.items=item;
}
#Override
public int getSectionCount() {
return 2;
}
#Override
public int getItemCount(int section) {
return items.size();
}
public static class ItemViewHolder extends RecyclerView.ViewHolder {
Task task;
CheckBox cb;
SwipeLayout swipeLayout;
TaskTableHelper taskTableHelper;
ItemViewHolder(final View itemView) {
super(itemView);
taskTableHelper= new TaskTableHelper(itemView.getContext());
swipeLayout = (SwipeLayout) itemView.findViewById(R.id.swipe);
cb = (CheckBox) itemView.findViewById(R.id.checkbox);
}
}
#Override
public void onBindViewHolder(final ItemViewHolder itemViewHolder,final int i) {
itemViewHolder.cb.setText(items.get(i).getTitle());
itemViewHolder.task = items.get(i);
int taskId = itemViewHolder.task.getId();
itemViewHolder.task = itemViewHolder.taskTableHelper.getTask(taskId);
int status = itemViewHolder.task.getStatus();
if(status == 0)
{
itemViewHolder.cb.setTextColor(Color.WHITE);
}
else {
itemViewHolder.cb.setChecked(true);
itemViewHolder.cb.setTextColor(Color.parseColor("#B0BEC5"));
}
itemViewHolder.cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
itemViewHolder.cb.setTextColor(Color.parseColor("#B0BEC5"));
itemViewHolder.task.setStatus(1);
itemViewHolder.taskTableHelper.updateStatus(itemViewHolder.task);
}
else
{
itemViewHolder.cb.setTextColor(Color.WHITE);
itemViewHolder.task.setStatus(0);
itemViewHolder.taskTableHelper.updateStatus(itemViewHolder.task);
}
}
});
final Task item = items.get(i);
itemViewHolder.swipeLayout.addDrag(SwipeLayout.DragEdge.Right,itemViewHolder.swipeLayout.findViewById(R.id.bottom_wrapper_2));
itemViewHolder.swipeLayout.setShowMode(SwipeLayout.ShowMode.LayDown);
itemViewHolder.swipeLayout.setOnDoubleClickListener(new SwipeLayout.DoubleClickListener() {
#Override
public void onDoubleClick(SwipeLayout layout, boolean surface) {
Toast.makeText(conext, "DoubleClick", Toast.LENGTH_SHORT).show();
}
});
itemViewHolder.swipeLayout.findViewById(R.id.trash2).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
mItemManger.removeShownLayouts(itemViewHolder.swipeLayout);
items.remove(i);
notifyItemRemoved(i);
notifyItemRangeChanged(i, items.size());
mItemManger.closeAllItems();
itemViewHolder.taskTableHelper.deleteTask(item);
_mId = item.getAlertId();
cancelNotification();
Toast.makeText(view.getContext(), "Deleted " + itemViewHolder.cb.getText().toString() + "!", Toast.LENGTH_SHORT).show();
}
});
itemViewHolder.swipeLayout.findViewById(R.id.done).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
itemViewHolder.task.setStatus(1);
itemViewHolder.taskTableHelper.updateStatus(itemViewHolder.task);
itemViewHolder.cb.setChecked(true);
Toast.makeText(conext, "Task Completed.", Toast.LENGTH_SHORT).show();
}
});
itemViewHolder.swipeLayout.getSurfaceView().setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
boolean mEditMode;
int id = item.getId();
int priority = item.getTaskPriority();
String title = item.getTitle();
String alertDate = item.getAlertDate();
String alertTime = item.getAlertTime();
String dueDate = item.getDueDate();
String dueTime = item.getDueTime();
_mId = item.getAlertId();
int listId = item.getList();
mEditMode = true;
Intent i = new Intent(conext, AddTaskActivity.class);
i.putExtra("taskId", id);
i.putExtra("taskTitle", title);
i.putExtra("taskPriority", priority);
i.putExtra("taskAlertTime", alertTime);
i.putExtra("taskAlertDate", alertDate);
i.putExtra("taskDueDate", dueDate);
i.putExtra("taskDueTime", dueTime);
i.putExtra("taskListId", listId);
i.putExtra("EditMode", mEditMode);
i.putExtra("AlertId",_mId);
conext.startActivity(i);
}
});
mItemManger.bindView(itemViewHolder.itemView, i);
}
#Override
public ItemViewHolder onCreateViewHolder(ViewGroup viewGroup,int position) {
View itemView = LayoutInflater.
from(viewGroup.getContext()).
inflate(R.layout.card_layout, viewGroup, false);
return new ItemViewHolder(itemView);
}
#Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
public void remove(int position) {
Task item = items.get(position);
if (itemsPendingRemoval.contains(item)) {
itemsPendingRemoval.remove(item);
}
if (items.contains(item)) {
items.remove(position);
notifyItemRemoved(position);
}
}
public void cancelNotification()
{
AlarmManager alarmManager = (AlarmManager)conext.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(conext, NotificationReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(conext,_mId, intent, 0);
alarmManager.cancel(pendingIntent);
}
#Override
public int getSwipeLayoutResourceId(int position) {
return R.id.swipe;
}
}
Can anyone help please?
Thank you..

You can add "sections" to your recyclerview with the library SectionedRecyclerViewAdapter.
First create a Section class to group your tasks:
class TaskSection extends StatelessSection {
String title;
List<Task> list;
public TaskSection(String title, List<Task> list) {
// call constructor with layout resources for this Section header, footer and items
super(R.layout.section_header, R.layout.section_item);
this.title = title;
this.list = list;
}
#Override
public int getContentItemsTotal() {
return list.size(); // number of items of this section
}
public int addTask(Task task) {
return list.add(task;
}
public int removeTask(Task task) {
return list.remove(task;
}
#Override
public RecyclerView.ViewHolder getItemViewHolder(View view) {
// return a custom instance of ViewHolder for the items of this section
return new MyItemViewHolder(view);
}
#Override
public void onBindItemViewHolder(RecyclerView.ViewHolder holder, int position) {
MyItemViewHolder itemHolder = (MyItemViewHolder) holder;
// bind your view here
itemHolder.tvItem.setText(list.get(position).getTitle());
}
#Override
public RecyclerView.ViewHolder getHeaderViewHolder(View view) {
return new SimpleHeaderViewHolder(view);
}
#Override
public void onBindHeaderViewHolder(RecyclerView.ViewHolder holder) {
MyHeaderViewHolder headerHolder = (MyHeaderViewHolder) holder;
// bind your header view here
headerHolder.tvItem.setText(title);
}
}
Then you set up the RecyclerView with your Sections:
// Create an instance of SectionedRecyclerViewAdapter
SectionedRecyclerViewAdapter sectionAdapter = new SectionedRecyclerViewAdapter();
// Create your sections with the list of data
TaskSection compSection = new TaskSection("Completed", compList);
TaskSection pendSection = new TaskSection("Pending", pendList);
// Add your Sections to the adapter
sectionAdapter.addSection(compSection);
sectionAdapter.addSection(pendSection);
// Set up your RecyclerView with the SectionedRecyclerViewAdapter
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerview);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
recyclerView.setAdapter(sectionAdapter);
Now if you want to send a task from "Pending" section to "Completed":
pendSection.removeTask(task);
compSection.addTask(task);
sectionAdapter.notifyDataSetChanged();
Regarding to the SwipeLayout, don't extend RecyclerSwipeAdapter, extend SectionedRecyclerViewAdapter and implement the SwipeLayout in ItemViewHolder / onBindItemViewHolder as you have done.