Develop Reference

How can I change the colour of recyclerView item on button pressed?

I have a fragment containing a recyclerView.
When a user presses on one of their recorded exercise sets, the particular set is highlighted green.
Basically this allows them to update the weight/ reps for that particular set if they want to.
When a user then decides to press the update button, I will run a SQL query to update the weight/ reps as they entered, however I also need to deselect the selected set (recyclerView item).
I need the colour to return back to dark grey. How could this be achieved?
Fragment (Relative Code)
#Override
public void onExerciseClicked(int position) {
if (recyclerItemClicked == false) {
saveBtn.setText("Update");
clearBtn.setVisibility(View.GONE);
recyclerItemClicked = true;
double selectedWeight = adapter.getWeight(position);
String selectedWeightString = Double.toString(selectedWeight);
editTextWeight.setText(selectedWeightString);
int selectedReps = adapter.getReps(position);
String selectedRepsString = Integer.toString(selectedReps);
editTextReps.setText(selectedRepsString);
} else {
clearBtn.setVisibility(View.VISIBLE);
saveBtn.setText("Save");
recyclerItemClicked = false;
}
}
public void initRecyclerView() {
adapter = new CompletedExercisesListAdapter2(allExercises, this);
recyclerView.setAdapter(adapter);
new ItemTouchHelper(itemTouchHelperCallback).attachToRecyclerView(recyclerView);
}
Adapter
public class CompletedExercisesListAdapter2 extends RecyclerView.Adapter {
private OnExerciseClickListener onExerciseClickListener;
private List<Log_Entries> allCompletedExercises = new ArrayList<>();
public int adapterPos = -1;
public boolean isSelected = false;
public boolean swipeDetected = false;
public CompletedExercisesListAdapter2(ArrayList<Log_Entries> allCompletedExercises, OnExerciseClickListener onExerciseClickListener) {
this.allCompletedExercises = allCompletedExercises;
this.onExerciseClickListener = onExerciseClickListener;
}
#NonNull
#Override
public RecyclerView.ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
View view;
if (viewType == 0) {
view = layoutInflater.inflate(R.layout.new_completed_exercise_item, parent, false);
return new ViewHolderOne(view, onExerciseClickListener);
}
view = layoutInflater.inflate(R.layout.completed_exercise_item, parent, false);
return new ViewHolderTwo(view, onExerciseClickListener);
}
#Override
public void onBindViewHolder(#NonNull RecyclerView.ViewHolder holder, int position) {
if (getItemViewType(position) == 0) {
ViewHolderOne viewHolderOne = (ViewHolderOne) holder;
Log.d("adapterPos", String.valueOf(adapterPos));
Log.d("position", String.valueOf(position));
if (adapterPos == position) {
viewHolderOne.relativeLayout.setBackgroundColor(Color.parseColor("#567845"));
} else {
viewHolderOne.relativeLayout.setBackgroundResource(R.color.dark_grey);
}
viewHolderOne.textViewExerciseName.setText(String.valueOf(allCompletedExercises.get(position).getChildExerciseName()));
viewHolderOne.textViewSetNumber.setText(String.valueOf(viewHolderOne.getAdapterPosition() + 1));
viewHolderOne.textViewWeight.setText(String.valueOf(allCompletedExercises.get(position).getTotal_weight_lifted()));
viewHolderOne.textViewReps.setText(String.valueOf(allCompletedExercises.get(position).getReps()));
} else if (getItemViewType(position) == 1) {
ViewHolderTwo viewHolderTwo = (ViewHolderTwo) holder;
if (adapterPos == position) {
viewHolderTwo.relativeLayout.setBackgroundColor(Color.parseColor("#567845"));
} else {
viewHolderTwo.relativeLayout.setBackgroundResource(R.color.dark_grey);
}
if(adapterPos >-1 && swipeDetected == true){
viewHolderTwo.relativeLayout.setBackgroundResource(R.color.dark_grey);
}
viewHolderTwo.textViewSetNumber.setText(String.valueOf(viewHolderTwo.getAdapterPosition() + 1));
viewHolderTwo.textViewWeight.setText(String.valueOf(allCompletedExercises.get(position).getTotal_weight_lifted()));
viewHolderTwo.textViewReps.setText(String.valueOf(allCompletedExercises.get(position).getReps()));
}
}
#Override
public int getItemCount() {
return allCompletedExercises.size();
}
#Override
public int getItemViewType(int position) {
// if list is sorted chronologically
if (position == 0) {
return 0;
}
if (allCompletedExercises.get(position).getChildExerciseName().equals(allCompletedExercises.get(position - 1).getChildExerciseName())) {
return 1;
} else {
return 0;
}
}
public class ViewHolderOne extends RecyclerView.ViewHolder implements View.OnClickListener {
private TextView textViewExerciseName;
private TextView textViewSetNumber;
private TextView textViewWeight;
private TextView textViewReps;
OnExerciseClickListener mOnExerciseClickListener;
private RelativeLayout relativeLayout;
public ViewHolderOne(#NonNull View itemView, OnExerciseClickListener onExerciseClickListener) {
super(itemView);
textViewExerciseName = itemView.findViewById(R.id.textView_ExerciseName3);
textViewSetNumber = itemView.findViewById(R.id.textView_Set_Number56);
textViewWeight = itemView.findViewById(R.id.textView_weight78);
textViewReps = itemView.findViewById(R.id.textView_repss0);
mOnExerciseClickListener = onExerciseClickListener;
relativeLayout = (RelativeLayout) itemView.findViewById(R.id.exercise_item_relative);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View v) {
onExerciseClickListener.onExerciseClicked(getAdapterPosition());
if (isSelected) {
adapterPos = -1;
isSelected = false;
} else {
adapterPos = getAdapterPosition();
isSelected = true;
}
notifyDataSetChanged();
}
}
class ViewHolderTwo extends RecyclerView.ViewHolder implements View.OnClickListener {
private TextView textViewSetNumber;
private TextView textViewWeight;
private TextView textViewReps;
OnExerciseClickListener mOnExerciseClickListener;
private RelativeLayout relativeLayout;
public ViewHolderTwo(#NonNull View itemView, OnExerciseClickListener onExerciseClickListener) {
super(itemView);
textViewSetNumber = itemView.findViewById(R.id.textView_Set_Number);
textViewWeight = itemView.findViewById(R.id.textView_weight);
textViewReps = itemView.findViewById(R.id.textView_repss);
relativeLayout = (RelativeLayout) itemView.findViewById(R.id.exercise_item_rel);
mOnExerciseClickListener = onExerciseClickListener;
itemView.setOnClickListener(this);
}
#Override
public void onClick(View v) {
onExerciseClickListener.onExerciseClicked(getAdapterPosition());
if (!isSelected) {
adapterPos = getAdapterPosition();
isSelected = true;
} else {
adapterPos = -1;
isSelected = false;
}
notifyDataSetChanged();
}
}
public interface OnExerciseClickListener {
void onExerciseClicked(int position);
}
}
}

Create a separate method in your adapter for clearing the selection.
public void clearSelection() {
adapterPos = -1;
isSelected = false;
notifyDataSetChanged();
}
Then call adapter.clearSelection() from your update click listener.

BaseAdapter listview postion while scrolling

I have a ListView with many items. Each item has a button and when I click on it, it becomes invisible and another button becomes visible.
The issue is: when I scroll the ListView, many other items buttons are invisible. How can I fix it?
public class homebuyer_fruits_adapter extends BaseAdapter {
private ArrayList<Itemssetget> listData;
private LayoutInflater layoutInflater;
public static int cout=0;
List position_item=new ArrayList();
Context context;
String check;
int lastpostition=-1;
public static List<cartitemslist> cartlist=new ArrayList<>();
public homebuyer_fruits_adapter(Context aContext, ArrayList<Itemssetget> listData,String number) {
this.listData = listData;
layoutInflater = LayoutInflater.from(aContext);
context=aContext;
check=number;
this.notifyDataSetChanged();
}
public int getCount() {
return listData.size();
}
#Override
public Object getItem(int position) {
return listData.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(final int position, View v, ViewGroup parent) {
final ViewHolder holder;
final cartitemslist homeitemslist = new cartitemslist();
if (v == null) {
v = layoutInflater.inflate(R.layout.food_vegitablews_view, null);
holder = new ViewHolder();
holder.name = (TextView) v.findViewById(R.id.name_item);
holder.price = (TextView) v.findViewById(R.id.price_item);
holder.add_q = (ImageView) v.findViewById(R.id.add_quantity);
holder.delete_q = (ImageView) v.findViewById(R.id.delete_quantity);
holder.quantity = (TextView) v.findViewById(R.id.add_quantity_items);
//holder.description = (TextView) v.findViewById(R.id.description_item);
//holder.id = (TextView) v.findViewById(R.id.);
holder.imageView = (ImageView) v.findViewById(R.id.image_items);
holder.discount = (TextView) v.findViewById(R.id.discout_price);
holder.add = (Button) v.findViewById(R.id.addto_cart);
holder.units=(TextView)v.findViewById(R.id.item_units);
holder.percentage=(TextView)v.findViewById(R.id.discount_percentage);
holder.linearLayou=(LinearLayout)v.findViewById(R.id.Quantity_control_linnear_view) ;
holder.phone=check;
v.setTag(holder);
} else {
holder = (ViewHolder) v.getTag();
this.notifyDataSetChanged();
}
int i=Integer.parseInt(listData.get(position).getPrice())-Integer.parseInt(listData.get(position).getDiscountprice());
int d=i*100;
if((d/Integer.parseInt(listData.get(position).getPrice()))==0)
{
holder.percentage.setVisibility(View.GONE);
}
holder.percentage.setText(""+d/Integer.parseInt(listData.get(position).getPrice())+"% OFF");
holder.name.setText(listData.get(position).getName());
holder.price.setText("Rs " + listData.get(position).getPrice());
if(listData.get(position).getPrice().equals(listData.get(position).getDiscountprice()))
{
holder.price.setVisibility(View.GONE);
}
holder.price.setPaintFlags(holder.price.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
holder.discount.setText("Rs " + listData.get(position).getDiscountprice());
Picasso.with(context).load(listData.get(position).getImageurl())
.fit().centerCrop().into(holder.imageView);
holder.units.setText(listData.get(position).getUnits());
holder.add_q.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Toast.makeText(context,listData.get(position).getName(),Toast.LENGTH_LONG).show();
if(H.containsKey(position))
{
holder.quantity.setText(""+(1+Integer.parseInt(holder.quantity.getText().toString())));
cartlist.get(H.get(position)).setQuantity(holder.quantity.getText().toString());
}
}
});
holder.delete_q.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(H.containsKey(position)) {
if(holder.quantity.getText().toString().equals("1"))
{
holder.add.setVisibility(View.VISIBLE);
holder.linearLayou.setVisibility(View.GONE);
int i=H.get(position);
cartlist.remove(i);
cout--;
Fruits.numberofitems.setText(cout + "");
}
else {
holder.quantity.setText("" + (Integer.parseInt(holder.quantity.getText().toString()) - 1));
cartlist.get(H.get(position)).setQuantity(holder.quantity.getText().toString());
}
}
}
});
holder.add.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Toast.makeText(context,"Add to cart"+holder.name.getText(),Toast.LENGTH_SHORT).show();
holder.add.setVisibility(View.GONE);
holder.linearLayou.setVisibility(View.VISIBLE);
// check=listData.get(position).getPhonenumber_seller();
if(cartlist.isEmpty()) {
cout++;
homeitemslist.setName(holder.name.getText().toString());
homeitemslist.setPrice(holder.price.getText().toString());
homeitemslist.setDiscountp(holder.discount.getText().toString());
homeitemslist.setQuantity(holder.quantity.getText().toString());
homeitemslist.setPhone_id(holder.phone);
homeitemslist.setImage(listData.get(position).getImageurl());
if(Fruits.numberofitems!=null)
{
Fruits.numberofitems.setText(cout + "");
}
shop_items.numberofitems.setText(cout + "");
buyer_home.numberofitems.setText(cout + "");
cartlist.add(homeitemslist);
H.put(position,cartlist.indexOf(homeitemslist));
}
else {
if(check.equals(cartlist.get(0).getPhone_id()))
{
cout++;
cartitemslist homeitemslist = new cartitemslist();
homeitemslist.setName(holder.name.getText().toString());
homeitemslist.setPrice(holder.price.getText().toString());
homeitemslist.setDiscountp(holder.discount.getText().toString());
homeitemslist.setQuantity(holder.quantity.getText().toString());
homeitemslist.setPhone_id(holder.phone);
homeitemslist.setImage(listData.get(position).getImageurl());
if(Fruits.numberofitems!=null)
{
Fruits.numberofitems.setText(cout + "");
}
shop_items.numberofitems.setText(cout + "");
buyer_home.numberofitems.setText(cout + "");
cartlist.add(homeitemslist);
H.put(position,cartlist.indexOf(homeitemslist));
}
else
{
Toast.makeText(context,"Clear the Previous cart First than you can buy from this shop",Toast.LENGTH_LONG).show();
}
}
}
});
// holder.description.setText(listData.get(position).getDiscription());
// holder.id.setText(listData.get(position).getId());
//holder.imageView.setImageAlpha(R.drawable.banana);
setanimation(v,position);
return v;
}
static class ViewHolder {
LinearLayout linearLayou;
TextView name;
TextView price;
TextView discount;
ImageView add_q;
ImageView delete_q;
TextView quantity;
ImageView imageView;
TextView description;
TextView units;
TextView percentage;
String phone;
Button add;
}
public void setanimation(View viewanim,int position)
{
if(position>lastpostition)
{
ScaleAnimation animation=new ScaleAnimation(0.0f,1.0f,0.0f,1.0f,
Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO_SELF,0.5f);
animation.setDuration(1500);
viewanim.setAnimation(animation);
lastpostition=position;
}
}
}
Here is my adapter code.
I tried many ways but still stuck on this issue.

You set the visibility only in the OnClickListener, but you need to set it in getView() too, because your views will get recycled (re-used for a different item) when you scroll.
So in getView() you have to restore the complete state of the view, including button visibility. Store all state information in your list items. Inside your getView() do something like this:
#Override
public View getView(final int position, View v, ViewGroup parent) {
...
// the view (v) could be recycled and showing a state from another item
// e.g. the add button is visible
final Itemssetget listItem = listData.get(position);
// so we have to restore the state of the view for listItem above
// e.g. update the button visibility
holder.add.setVisibility(listItem.isAddButtonVisible() ? View.VISIBLE : View.GONE);
holder.add.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
...
holder.add.setVisibility(View.GONE);
// save the state of the button, so it can be restored later
listItem.setAddButtonVisible(true);
...
}
}
...
}
Add the necessary member variables and getter/setter functions in Itemssetget:
public class Itemssetget {
...
private boolean isAddButtonVisible = false;
public boolean isAddButtonVisible() {
return isAddButtonVisible;
}
public void setAddButtonVisible(boolean isVisible) {
this.isAddButtonVisible = isVisible;
}
...
}
PS: Your code looks terrible. Have a look at naming conventions.

Android scrollable layout

I want to put button below ListView and have everything inside ScrollView(not only ListView should be scrollable but button too so if ListView has a lot of elements button is invisible and user has to scroll down to click it).
My xml is:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.plan.aplikacjamobilna.fragments.tabs.Allergies">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_gravity="center_horizontal">
<ListView
android:id="#+id/allergies_listView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:dividerHeight="3dp"
android:divider="#cccccc">
</ListView>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button"/>
</LinearLayout>
</ScrollView>
it looks like:
I'm not sure why it doesn't work, there is "match_parent" as layout_hight.
What shuld I change in my code?
my Adapter:
public class AllergiesAdapter extends ArrayAdapter{
List list = new ArrayList();
char[] keys;
public AllergiesAdapter(Context context, int resource) {
super(context, resource);
}
public static class DataHandler{
ImageView allergieIcon;
ImageView showDetailsIcon;
TextView allergieName;
FrameLayout detailsLayout;
RelativeLayout infoLayout;
CheckBox checkBox;
}
#Override
public void add(Object object) {
super.add(object);
list.add(object);
}
#Override
public int getCount() {
return this.list.size();
}
#Override
public Object getItem(int position) {
return this.list.get(position);
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View view = convertView;
final DataHandler dataHandler;
if(convertView==null){
LayoutInflater inflater = (LayoutInflater)this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.allergie_item,parent,false);
dataHandler = new DataHandler();
dataHandler.allergieIcon = (ImageView) view.findViewById(R.id.allerie_icon);
dataHandler.showDetailsIcon = (ImageView) view.findViewById(R.id.allergie_show_info);
dataHandler.allergieName =(TextView) view.findViewById(R.id.allerie_name);
dataHandler.detailsLayout=(FrameLayout)view.findViewById(R.id.allergie_frameLayout);
dataHandler.infoLayout=(RelativeLayout)view.findViewById(R.id.info_layout);
dataHandler.checkBox=(CheckBox)view.findViewById(R.id.allergie_checkbox);
view.setTag(dataHandler);
}
else{
dataHandler=(DataHandler) view.getTag();
}
LayoutInflater inflater = (LayoutInflater)this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final AllergiesDataProvider allergiesDataProvider;
allergiesDataProvider = (AllergiesDataProvider) this.getItem(position);
dataHandler.allergieIcon.setImageResource(allergiesDataProvider.getAllergieIcon());
dataHandler.showDetailsIcon.setImageResource(allergiesDataProvider.getShowDetailsIcon());
dataHandler.allergieName.setText(allergiesDataProvider.getAllergieName());
dataHandler.showDetailsIcon.setImageResource(allergiesDataProvider.getShowDetails());
allergiesData = getContext().getSharedPreferences("allergiesData", Context.MODE_PRIVATE);
allergiesEditor = allergiesData.edit();
String myKey = allergiesData.getString(ALLERIES_KEY,"00000000");
keys = myKey.toCharArray();
if(keys[position]=='0')
dataHandler.checkBox.setChecked(false);
else
dataHandler.checkBox.setChecked(true);
dataHandler.infoLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// Toast.makeText(getContext(),"no elo",Toast.LENGTH_LONG).show();
if (!allergiesDataProvider.isDetailsShows()) {
allergiesDataProvider.setIsDetailsShows(true);
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
dataHandler.detailsLayout.removeAllViews();
dataHandler.detailsLayout.addView(inflater.inflate(allergiesDataProvider.getDetailsLayout(), dataHandler.detailsLayout, false));
dataHandler.showDetailsIcon.setImageResource(allergiesDataProvider.getHindDetails());
} else {
allergiesDataProvider.setIsDetailsShows(false);
dataHandler.detailsLayout.removeAllViews();
dataHandler.showDetailsIcon.setImageResource(allergiesDataProvider.getShowDetails());
}
}
});
dataHandler.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked)
keys[position] = '1';
else
keys[position] = '0';
String myString = String.valueOf(keys);
allergiesEditor.putString(ALLERIES_KEY,myString).apply();
//Toast.makeText(getContext(),allergiesData.getString(ALLERIES_KEY,"Sd"),Toast.LENGTH_LONG).show();
}
});
return view;
}
}

You can use this function to set the height of list view based on your children.
public static void setListViewHeightBasedOnChildren(ListView listView) {
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null) {
// pre-condition
return;
}
int totalHeight = 0;
int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(), MeasureSpec.AT_MOST);
for (int i = 0; i < listAdapter.getCount(); i++) {
View listItem = listAdapter.getView(i, null, listView);
listItem.measure(desiredWidth, MeasureSpec.UNSPECIFIED);
totalHeight += listItem.getMeasuredHeight();
}
ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
listView.setLayoutParams(params);
listView.requestLayout();
}
Example:
setListViewHeightBasedOnChildren(yourlistview);

A ListView is scrollable on it's own and should not be wrapped in a ScrollView. For your use, what you should do is to simply have the ListView as it is and have the button as the last view in the ListView. You will have to modify the getview() method in your adapter to achieve this. Based on the index, you will return a view that displays a Button.

I suggest you to use RecyclerView with footer as a button like this way,and also try HFRecyclerView
public class HeaderFooterAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private static final int TYPE_HEADER = 0;
private static final int TYPE_ITEM = 1;
private static final int TYPE_FOOTER = 2;
ArrayList<Generic> generics;
Context context;
public HeaderFooterAdapter(Context context, ArrayList<Generic> generics) {
this.context = context;
this.generics = generics;
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder (ViewGroup parent, int viewType) {
if(viewType == TYPE_HEADER) {
View v = LayoutInflater.from (parent.getContext ()).inflate (R.layout.header_item, parent, false);
return new HeaderViewHolder (v);
} else if(viewType == TYPE_FOOTER) {
View v = LayoutInflater.from (parent.getContext ()).inflate (R.layout.footer_item, parent, false);
return new FooterViewHolder (v);
} else if(viewType == TYPE_ITEM) {
View v = LayoutInflater.from (parent.getContext ()).inflate (R.layout.list_item, parent, false);
return new GenericViewHolder (v);
}
return null;
}
private Generic getItem (int position) {
return generics.get (position);
}
#Override
public void onBindViewHolder (RecyclerView.ViewHolder holder, int position) {
if(holder instanceof HeaderViewHolder) {
HeaderViewHolder headerHolder = (HeaderViewHolder) holder;
headerHolder.txtTitleHeader.setText ("Header");
headerHolder.txtTitleHeader.setOnClickListener (new View.OnClickListener () {
#Override
public void onClick (View view) {
Toast.makeText (context, "Clicked Header", Toast.LENGTH_SHORT).show ();
}
});
} else if(holder instanceof FooterViewHolder) {
FooterViewHolder footerHolder = (FooterViewHolder) holder;
footerHolder.txtTitleFooter.setText ("Footer");
footerHolder.txtTitleFooter.setOnClickListener (new View.OnClickListener () {
#Override
public void onClick (View view) {
Toast.makeText (context, "Clicked Footer", Toast.LENGTH_SHORT).show ();
}
});
} else if(holder instanceof GenericViewHolder) {
Generic currentItem = getItem (position - 1);
GenericViewHolder genericViewHolder = (GenericViewHolder) holder;
genericViewHolder.txtName.setText (currentItem.getName ());
}
}
// need to override this method
#Override
public int getItemViewType (int position) {
if(isPositionHeader (position)) {
return TYPE_HEADER;
} else if(isPositionFooter (position)) {
return TYPE_FOOTER;
}
return TYPE_ITEM;
}
private boolean isPositionHeader (int position) {
return position == 0;
}
private boolean isPositionFooter (int position) {
return position == generics.size () + 1;
}
#Override
public int getItemCount () {
return generics.size () + 2;
}
class FooterViewHolder extends RecyclerView.ViewHolder {
TextView txtTitleFooter;
public FooterViewHolder (View itemView) {
super (itemView);
this.txtTitleFooter = (TextView) itemView.findViewById (R.id.txtFooter);
}
}
class HeaderViewHolder extends RecyclerView.ViewHolder {
TextView txtTitleHeader;
public HeaderViewHolder (View itemView) {
super (itemView);
this.txtTitleHeader = (TextView) itemView.findViewById (R.id.txtHeader);
}
}
class GenericViewHolder extends RecyclerView.ViewHolder {
TextView txtName;
public GenericViewHolder (View itemView) {
super (itemView);
this.txtName = (TextView) itemView.findViewById (R.id.txtName);
}
}
}

Set Radiobutton true onItemclick on listview

I want to mark radio button true in listview onItemClick so what I am doing is
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
LinearLayout item_view = (LinearLayout) view;
final RadioButton itemcheck = (RadioButton) item_view
.findViewById(R.id.listview_radiobutton);
if (itemcheck.isChecked()) {
itemcheck.setChecked(true);
} else {
itemcheck.setChecked(false);
}
itemcheck.setChecked(true);
}
My listview
<ListView
android:id="#+id/listview"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_marginLeft="#dimen/view_margin_15"
android:layout_marginRight="#dimen/view_margin_15"
android:layout_marginTop="#dimen/view_margin_20"
android:layout_weight="1"
android:choiceMode="singleChoice"
android:divider="#drawable/list_divider"
android:dividerHeight="#dimen/padding_2"
android:fastScrollEnabled="true"
android:footerDividersEnabled="true"
android:listSelector="#null"
android:scrollbars="none"
android:textFilterEnabled="true"
android:textStyle="normal" />
Edit:--
My Adapter code :--
public class Adapter extends ArrayAdapter<Details> {
private Context mContext;
private List<Details> transList;
private LayoutInflater infalInflater;
private OnCheckedRadioButon onCheckedRadioButon;
private Typeface mTypeface, mEditTypeface, mPasswdTypeface;
private int mSelectedPosition = -1;
private RadioButton mSelectedRB;
private PromoViewHolder viewHolder;
public Adapter(Context context, List<Details> mtransList, OnCheckedRadioButon onCheckedRadioButon) {
super(context, R.layout.dialog_listview, mtransList);
this.mContext = context;
this.transList = mtransList;
this.onCheckedRadioButon = onCheckedRadioButon;
this.infalInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View row = convertView;
try {
viewHolder = null;
row = infalInflater.inflate(R.layout.dialog_listview_code, parent, false);
viewHolder = new ViewHolder();
viewHolder.radiobutton = (RadioButton) row.findViewById(R.id.radiobutton);
viewHolder.listview_name = (TextView) row.findViewById(R.id.listview_name);
setValueText(viewHolder, position);
viewHolder.radiobutton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
if (checked) {
onCheckedRadioButon.onCheckedButton(transList.get(position));
}
}
});
viewHolder.radiobutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (position != mSelectedPosition && mSelectedRB != null) {
mSelectedRB.setChecked(false);
}
mSelectedPosition = position;
mSelectedRB = (RadioButton) v;
}
});
if (mSelectedPosition != position) {
viewHolder.radiobutton.setChecked(false);
} else {
viewHolder.radiobutton.setChecked(true);
if (mSelectedRB != null && viewHolder.radiobutton != mSelectedRB) {
mSelectedRB = viewHolder.radiobutton;
}
}
row.setTag(viewHolder);
} catch (Exception e) {
e.printStackTrace();
}
return row;
}
private void setValueText(ViewHolder viewHolder, final int position) {
viewHolder.listview_name.setText(transList.get(position).getName());
}
public interface OnCheckedRadioButon {
void onCheckedButton(Details pr);
}
class ViewHolder {
RadioButton radiobutton;
TextView listview_name;
}
}
It is working but if I click on another position of the listview then the previous radiobutton position is not unchecked.I want to uncheck all the previous ones and mark only one at a time.
Any help will be appreciated.

Use POJO classes (Setter or Getter) to manage this type of condition. Use boolean variable in that class and change its values according to the position true or false.
POJO Class Like :
public class CheckListSource {
public boolean isSelected;
public boolean isSelected() {
return isSelected;
}
public void setSelected(boolean selected) {
isSelected = selected;
}
}
In your adapter :
private ArrayList<CheckListSource > itemsData;
public ChildListAdapter(Activity activity, ArrayList<ChildListResponse> baseResponse) {
this.itemsData = baseResponse;
this.activity = activity;
}
In BindViewHolder Like :
viewHolder.checkParentView.setTag(itemsData.get(position));
viewHolder.checkParentView.setOnClickListener(checkedListener);
private View.OnClickListener checkedListener = new View.OnClickListener() {
#Override
public void onClick(View v) {
CheckListSource childListResponse = (CheckListSource ) v.getTag();
if (childListResponse.isSelected())
childListResponse.setSelected(false);
else
childListResponse.setSelected(true);
notifyDataSetChanged();
}
};

Use a boolean array in your Activity. Each boolean value corresponds to a RadioButton.
If a RadioButton is checked, set its boolean value to true, and set all other boolean values in the array to false.
In the getView() of your Adapter, call your_radio_button.setChecked(your_boolean_array[position]).
Once the boolean array is modified, call your_adapter.notifyDataSetChanged().

Checkout this it works for me..
public class ProgramAdapter extends ArrayAdapter<KeyInformation> {
private final String TAG = "ProgramAdapter";
private List<KeyInformation> mList;
private Context mContext;
private LayoutInflater mInflater;
private int mSelectedPosition = -1;
private RadioButton mSelectedRB;
private String mUserApllication = "";
public ProgramAdapter(Context context, List<KeyInformation> objects) {
super(context, R.layout.program_item, objects);
mContext = context;
mList = objects;
mInflater = ( LayoutInflater ) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mUserApllication = Settings.System.getString(mContext.getContentResolver(),
Settings.System.PROGRAMMABLE_KEY_ACTION);
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
holder = new ViewHolder();
convertView = mInflater.inflate(R.layout.program_item, parent, false);
holder.mImageView = (ImageView) convertView.findViewById(R.id.icon);
holder.mTextView = (TextView) convertView.findViewById(R.id.text);
holder.mSeparator = (TextView) convertView.findViewById(R.id.title_separator);
holder.mRadioButton = (RadioButton) convertView.findViewById(R.id.radioBtn);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.mRadioButton.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View view) {
if(position != mSelectedPosition && mSelectedRB != null){
mSelectedRB.setChecked(false);
}
mUserApllication ="";
mSelectedPosition = position;
mSelectedRB = (RadioButton) view;
}
});
String userApp = mList.get(position).packageName;
if(mUserApllication.equals(userApp)) {
mSelectedPosition = position;
}
if (mSelectedPosition != position) {
holder.mRadioButton.setChecked(false);
} else {
holder.mRadioButton.setChecked(true);
mSelectedRB = holder.mRadioButton;
}
holder.mImageView.setImageDrawable(mList.get(position).icon);
holder.mTextView.setText(mList.get(position).lable);
if (position == 5) {
holder.mSeparator.setVisibility(View.VISIBLE);
} else {
holder.mSeparator.setVisibility(View.GONE);
}
return convertView;
}
public int getmSelectedPosition () {
return mSelectedPosition;
}
private static class ViewHolder {
ImageView mImageView;
TextView mTextView;
TextView mSeparator;
RadioButton mRadioButton;
}
}

Please go through below, it will work.
class Details{
public boolean isSelect=false;
}
public class Adapter extends ArrayAdapter<Details> {
private Context mContext;
private List<Details> transList;
private LayoutInflater infalInflater;
private OnCheckedRadioButon onCheckedRadioButon;
private Typeface mTypeface, mEditTypeface, mPasswdTypeface;
private int mSelectedPosition = -1;
private RadioButton mSelectedRB;
private PromoViewHolder viewHolder;
public Adapter(Context context, List<Details> mtransList, OnCheckedRadioButon onCheckedRadioButon) {
super(context, R.layout.dialog_listview, mtransList);
this.mContext = context;
this.transList = mtransList;
this.onCheckedRadioButon = onCheckedRadioButon;
this.infalInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public void updateList(){
viewHolder.radiobutton.setChecked(false);
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View row = convertView;
try {
viewHolder = null;
row = infalInflater.inflate(R.layout.dialog_listview_code, parent, false);
viewHolder = new ViewHolder();
viewHolder.radiobutton = (RadioButton) row.findViewById(R.id.radiobutton);
viewHolder.listview_name = (TextView) row.findViewById(R.id.listview_name);
setValueText(viewHolder, position);
viewHolder.radiobutton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
if (checked) {
onCheckedRadioButon.onCheckedButton(transList.get(position));
}
}
});
viewHolder.radiobutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Details detail=transList.get(position);
for(int i=0;i<transList.size;i++){
Detail b=transList.get(i);
b.isSelect=false;
}
detail.isSelect=true;
adapter.notifydatasetchange();
}
});
Details detail=transList.get(position);
if (detail.isSelect) {
viewHolder.radiobutton.setChecked(true);
} else {
viewHolder.radiobutton.setChecked(false);
}
row.setTag(viewHolder);
} catch (Exception e) {
e.printStackTrace();
}
return row;
}
private void setValueText(ViewHolder viewHolder, final int position) {
viewHolder.listview_name.setText(transList.get(position).getName());
}
public interface OnCheckedRadioButon {
void onCheckedButton(PromoDetails promoDetails);
}
class ViewHolder {
RadioButton radiobutton;
TextView listview_name;
}
}

Get parent layout from custom Adapter

Could anybody explain me, how to realize?
I have an activity with listview and footer with some elements(textview).
Listview built with custom adapter. Each listview item has few elements. And my question: how can i change textview in footer, from custom adapter, when i clicking on some listview's element?
Thx a lot!
/**** My adapter ****/
public class MyListAdapter extends ArrayAdapter<Product> implements UndoAdapter {
private final Context mContext;
private HashMap<Product, Integer> mIdMap = new HashMap<Product, Integer>();
ArrayList<Product> products = new ArrayList<Product>();
final int INVALID_ID = -1;
LayoutInflater lInflater;
String imagePath;
public MyListAdapter(Context context, int textViewResourceId, List<Product> prod) {
//super(context, textViewResourceId, prod);
super(prod);
lInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mContext = context;
for (int i = 0; i < prod.size(); i++) {
//add(prod.get(i));
mIdMap.put(prod.get(i),i);
}
}
#Override
public long getItemId(final int position) {
//return getItem(position).hashCode();
Product item = (Product) getItem(position);
return mIdMap.get(item);
}
#Override
public boolean hasStableIds() {
return true;
}
#Override
public View getView(final int position, View convertView, final ViewGroup parent) {
ViewHolder holder = null;;
Product p = getItem(position);
if (convertView == null) {
convertView = lInflater.inflate(R.layout.item, null);
//convertView.setBackgroundResource(R.drawable.rounded_corners);
int currentTheme = Utils.getCurrentTheme(convertView.getContext());
switch (currentTheme) {
case 0:
convertView.setBackgroundResource(R.drawable.rounded_corners);
break;
case 1:
convertView.setBackgroundResource(R.drawable.border);
break;
default:
convertView.setBackgroundResource(R.drawable.rounded_corners);
break;
}
holder = new ViewHolder();
holder.tvDescr = (TextView) convertView.findViewById(R.id.tvDescr);
holder.list_image = (ImageView) convertView.findViewById(R.id.list_image);
holder.products_amount = (TextView) convertView.findViewById(R.id.amountDigits);
holder.products_price = (TextView) convertView.findViewById(R.id.priceDigits);
holder.ivImage = (ImageView) convertView.findViewById(R.id.ivImage);
holder.unit = (TextView) convertView.findViewById(R.id.unit);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
if(p.getProductImageBitmap() != null && p.getProductImageBitmap() != "") {
Log.d("PATH -- ", p.getProductImageBitmap());
ImageLoader imageLoader = ImageLoader.getInstance();
DisplayImageOptions options = new DisplayImageOptions.Builder().cacheInMemory(true)
.resetViewBeforeLoading(true)
.showImageForEmptyUri(R.drawable.ic_launcher)
.showImageOnFail(R.drawable.ic_launcher)
/*.showImageOnLoading(R.id.progress_circular)*/
.build();
imageLoader.displayImage(p.getProductImageBitmap(), holder.list_image, options);
} else {
holder.list_image.setImageResource(R.drawable.ic_launcher);
}
holder.tvDescr.setText(p.getProductName());
holder.ivImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String deletedItem = getItem(position).getProductName();
MyListAdapter.this.remove(getItem(position));
if (MyListAdapter.this.getCount() > 0) {
Toast.makeText(mContext, deletedItem + " " + mContext.getString(R.string.deleted_item), Toast.LENGTH_SHORT).show();
MyListAdapter.this.notifyDataSetChanged();
} else {
Toast.makeText(mContext,mContext.getString(R.string.sklerolist_empty), Toast.LENGTH_SHORT).show();
}
}
});
//Функционал для большой картинки продукта
//открывается новое активити с большой картинкой
holder.list_image.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
imagePath = getItem(position).getProductImageBitmap();
if(imagePath != null && imagePath != "") {
Pattern normalPrice = Pattern.compile("^file");
Matcher m2 = normalPrice.matcher(imagePath);
if (m2.find()) {
Intent myIntent = new Intent(view.getContext(), ViewImage.class).putExtra("imagePath", imagePath);
view.getContext().startActivity(myIntent);
}
}
}
});
holder.products_price.setText(fmt(p.getProductPrice()));
holder.products_amount.setText(fmt(p.getProductAmount()));
holder.unit.setText(p.getProductUnit());
return convertView;
}
public static String fmt(double d){
if(d == (long) d)
return String.format("%d",(long)d);
else
return String.format("%s",d);
}
static class ViewHolder {
ImageView list_image;
TextView tvDescr;
TextView products_amount;
TextView products_price;
TextView unit;
ImageView ivImage;
ProgressBar circleProgress;
}
#NonNull
#Override
public View getUndoView(final int position, final View convertView, #NonNull final ViewGroup parent) {
View view = convertView;
if (view == null) {
//view = LayoutInflater.from(mContext).inflate(R.layout.undo_row, parent, false);
view = lInflater.inflate(R.layout.undo_row, parent, false);
}
return view;
}
#NonNull
#Override
public View getUndoClickView(#NonNull final View view) {
return view.findViewById(R.id.undo_row_undobutton);
}
public View getHeaderView(final int position, final View convertView, final ViewGroup parent) {
TextView view = (TextView) convertView;
//View view = convertView;
if (view == null) {
//view = (TextView) LayoutInflater.from(mContext).inflate(R.layout.list_header, parent, false);
//view = lInflater.inflate(R.layout.list_header, parent, false);
}
//view.setText(mContext.getString(R.string.header, getHeaderId(position)));
return view;
}
public long getHeaderId(final int position) {
return position / 10;
}
}

Your ListView has a listener for the click events on list elements.
#Override
public void onListItemClick(ListView l, View v, int position, long id) {
// Do something when a list item is clicked
}
But if you want to pas something else back from the adapter to the Activity or the Fragment that contains that ListView and Adapter, you should create a simple interface and set it as listener to your adapter. After that, set click events on your rows from within the adapter, and notify the Activity or Fragment using your own interface.
For example you have the interface defined like this
public interface OnItemClickedCustomAdapter {
public void onClick(ItemPosition position);
}
and in your Adapter class you will have a private member
private OnItemClickedCustomAdapter mListener;
and a method used to set the listener
public void setOnItemClickedCustomAdapter(OnItemClickedCustomAdapter listener){
this.mListener = listener;
}
From your Activity or Fragment where your ListView is defined, and your adapter is set, you will be able to call setOnItemClickedCustomAdapter with this as parameter, and there you go. Your activity will now listen for your events. To trigger an event, just call mListener.onClick() from your custom adapter. You can pass back data you need back to the Activity or Fragment, and from there you have access to your Header or Footer directly, and you can change the text on them.