Develop Reference

Get value from recycler view Adapter to activity

I have the layout as below. And I want to get all the data from the "quantity view" (from textview between "+" and "-" button) to my activity after the "proceed" button click.
I tried few of the answers but could not get the expected result. Can I get Some Help.
I have added a interface on adapter...
public interface OnItemClickListener {
void onItemClick(String id, String amount);
}
public void setOnItemClickListener(OnItemClickListener listener) {
this.listener = listener;
}
and on the quantity change of the "quantity view" i tried to get the data from the adapter to activity
holder.quantityView.setOnQuantityChangeListener(new QuantityView.OnQuantityChangeListener() {
#Override
public void onQuantityChanged(int oldQuantity, int newQuantity, boolean programmatically) {
if (listener != null) {
listener.onItemClick(pricingPOJO.getId(), newQuantity + "");
}
}
#Override
public void onLimitReached() {
}
});

Maintain a Map of selected position to values like:
Map<Integer, Integer> positionToValueMap = new HashMap<>();
Then in OnBindViewHolder do this:
get your value like:
yourValue = positionToValueMap.get(getAdapterPosition());
set your value like:
positionToValueMap.put(getAdapterPosition(), yourValue);
then create getter method for positionToValueMap in adapter class and call the getter from your fragment/activity.
You are all done.

Checked the Checkboxes that is already checked

I have one EditText (edModelColor). when user click on edModelColor(EditText) then the custom dialog will be called.Custom dialog consist of RecylerView and searchview and one custom row for each item. Custom row contains ImageView(icon), TextView (colorNames) and checkbox for selection. When user click on any checkbox I passed the colorName and its position in adapter into method checkAndRemove. this method will add or remove the color name according to its adapter position and the colorNames will added into edModelColor(EditText). its working fine but the problem is that once the user click on edModelColor(EditText) again, I want to checked those checkboxes which are already checked inside CustomDialogbox.I have seen some articles online but I could not understand what they meant.
bodyColorDialog:
private void bodyColorDialog() {
TextView txtClose;
TextView tvCancel;
Button btnOk;
bodyColorDialog.setContentView(R.layout.ed_body_color_dialog);
bodyColorDialog.setCancelable(false);
txtClose = bodyColorDialog.findViewById(R.id.txtModelClose);
tvCancel = bodyColorDialog.findViewById(R.id.tvCancel);
btnOk = bodyColorDialog.findViewById(R.id.btnOk);
edBodyColorSearchView = bodyColorDialog.findViewById(R.id.edBodyColorSearchViewColor);
edBodyColorRecylerView = bodyColorDialog.findViewById(R.id.edBodyColorRecylerView);
edBodyColorRecylerView.setLayoutManager(new LinearLayoutManager(getContext()));
bodyColorArrayList.clear();
setUpBodyColorArrayList();
btnOk.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
selectionCMap = new HashMap<>();
selectionCMap = edBodyColorAdapter.selectionColorsMap;
for(String value : selectionCMap.values()){
/* tv.setText(tv.getText() + "\n" + value);*/
edBodyColor.append(value + ",");
}
bodyColorDialog.dismiss();
}
});
txtClose.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
bodyColorDialog.dismiss();
}
});
tvCancel.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
bodyColorDialog.dismiss();
}
});
bodyColorDialog.show();
}
private void setUpBodyColorArrayList() {
bodyColorArrayList.clear();
String bodyColorName[] = getResources().getStringArray(R.array.body_color_array);
int bodyColorIcons[] = {R.drawable.red, R.drawable.black, R.drawable.violet, R.drawable.white,
R.drawable.orange, R.drawable.blue, R.drawable.green, R.drawable.yello};
for(int i =0; i < bodyColorIcons.length; i++)
{
bodyColorArrayList.add(new edModelBodyColor(bodyColorName[i], bodyColorIcons[i]));
}
edBodyColorAdapter = new edBodyColorAdapter(getContext(), bodyColorArrayList);
edBodyColorRecylerView.setAdapter(edBodyColorAdapter);
edBodyColorSearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String queryString) {
edBodyColorAdapter.getFilter().filter(queryString);
return false;
}
#Override
public boolean onQueryTextChange(String queryString) {
edBodyColorAdapter.getFilter().filter(queryString);
return false;
}
});
}
edBodyColorAdapter.java
holder.checkBoxColor.setOnCheckedChangeListener(new
CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked) {
int position = holder.getAdapterPosition();
clickedColorNamePosition = edBodyColorArrayList.indexOf(filteredArrayList.get(position));
String name = edBodyColorArrayList.get(clickedColorNamePosition).getBodyColorName();
Toast.makeText(context, "name = " + name, Toast.LENGTH_SHORT).show();
//this mthod will check if selected checkbox value is already present or not.
// It present then remove ( means user unchecked box) and if value is not there means user has selected checkbox
checkAndRemove(position,name);
}
});
checkAndRemove:
private void checkAndRemove(int position, String name) {
if(selectionColorsMap.containsKey(position)){
selectionColorsMap.remove(position);
Toast.makeText(context, "removed", Toast.LENGTH_SHORT).show();
}else {
selectionColorsMap.put(position, name);
Toast.makeText(context, "added", Toast.LENGTH_SHORT).show();
}
}
preview:
Conculusion: I want to check these checkboxes values when user click again on edBodyColor dialog..

I as can see, you are initializing the ArrayList of colors every time you are showing the dialog, that's why, you start always at initial state.
Instead, you should initialized the ArrayList inside onCreate() and reuse it every time to maintain the previous state.

Change the background color of selected item in recyclerview

I have a recyclerview where i want to change the color of the selected item and re change it on unselected. I have used an string arraylist and an interface for that here is interface code in adapter -
public interface Callback{
void onItemClicked(String i_name, boolean longClick);
}
Here is onclick and onlongclick code-
#Override
public void onClick(View view) {
String[] tag = ((String) view.getTag()).split(":");
String i_name = tag[1];
Toast.makeText(context, ""+i_name, Toast.LENGTH_SHORT).show();
if(callback != null)
{
callback.onItemClicked(i_name,false);
}
}
#Override
public boolean onLongClick(View view) {
String[] tag = ((String) view.getTag()).split(":");
String i_name = tag[1];
if(callback != null)
{
callback.onItemClicked(i_name,false);
}
return false;
}
Here is the toggleselected code -
public void toggleSelected(String i_name)
{
final boolean newState = !selectedList.contains(i_name);
if(newState)
{
// i want to give background color to i_name
selectedList.add(i_name);
Toast.makeText(context, "selected list1- "+selectedList, Toast.LENGTH_SHORT).show();
}
else
{
selectedList.remove((String) i_name);
Toast.makeText(context, "selected list2- "+selectedList, Toast.LENGTH_SHORT).show();
}
notifyDataSetChanged();
}
here is onItemClicked code from fragment -
#Override
public void onItemClicked(String i_name, boolean longClick) {
if(longClick)
{
((MyCategoryAdaptercheckbox) MyAdapter).toggleSelected(i_name);
}
else
{
((MyCategoryAdaptercheckbox) MyAdapter).toggleSelected(i_name);
}
}
This is the code from onbindviewholder where i am settingthe tag -
getMyCategoryAdapter1 = category_name.get(i);
viewHolder.view.setActivated(selectedList.contains(i));
viewHolder.view.setTag("items:" + getMyCategoryAdapter1.getC_name());
viewHolder.view.setOnClickListener(this);
viewHolder.view.setOnLongClickListener(this);
I want to give background color to i_name on toggleselected() method.HOw can i do this.Please help.Thanks in advance.

Basic idea for selecting and disselecting items in a recyclerview.
Maintain a tag in your model for selected and unselected.
for e.x
boolean isSelected;
when you populate the data make all values in your list for isSelected false bydefault.
Then in your long press set the value of isSelected to true for that position only in your arraylist and call notifyDataSetChanged.
and in your onbindviewholder check
if(yourModel.isSelected){
// show the row selected
}else {
// show the row unselected
}
I hope you get the idea.

Hide the view in recyclerview's item

i facing a problem in recyclerview's item.
My Adapter's code :
#Override
public void onBindViewHolder(final RecyclerView.ViewHolder holder, int position) {
Profile item = mListChatting.get(position);
Log.d("TAG", "CEK : " + viewable);
if(viewable==true){
holder.mFormBookingan.setVisibility(View.GONE);
holder.mDetailBookingan.setVisibility(View.VISIBLE);
}else{
//assume that one way is show first as default
holder.mViewOneWay.setVisibility(View.VISIBLE);
holder.mViewRoundTrip.setVisibility(View.GONE);
holder.mOneOway.setBackgroundResource(R.drawable.round_just_left_white_focus);
holder.mRoundTrip.setBackgroundResource(R.drawable.state_pressed_booking_button_left);
holder.mSendBooking.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
viewable = true;
Log.d("TAG", "CEK 2 : " + viewable);
}
});
}
Like my code above, I want to hide mFormBookingan after mSendBooking has pressed. mFormBookingan never show anymore until user calls it again.
I have tried with a lot of ways but still can't find like what i need. After i press mSendBooking the form hide, but when i send new item to recyclerview, the from mFormBookingan that has been hide, appears again.
My Question, how to hide mFormBookingan forever? Until user call it again.
Thank in advance, i will appreciate anyone who help me for this one.

I not sure what the clear situation you want.
But if you want to set View invisible you can try this code then check it.
You need to add ismFormBookingVisible in viewHolder class as a boolean attribute.
#Override
public void onBindViewHolder(final RecyclerView.ViewHolder holder, int position) {
Profile item = mListChatting.get(position);
Log.d("TAG", "CEK : " + viewable);
if(holder.ismFormBookingVisible==true){
holder.mFormBookingan.setVisibility(View.GONE);
holder.mDetailBookingan.setVisibility(View.VISIBLE);
}else{
//assume that one way is show first as default
holder.mViewOneWay.setVisibility(View.VISIBLE);
holder.mViewRoundTrip.setVisibility(View.GONE);
holder.mOneOway.setBackgroundResource(R.drawable.round_just_left_white_focus);
holder.mRoundTrip.setBackgroundResource(R.drawable.state_pressed_booking_button_left);
holder.mSendBooking.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
holder.ismFormBookingVisible = false;
Log.d("TAG", "CEK 2 : " + viewable);
}

Try this :
Create a boolean in your model class "Profile" to keep track of visibility of button : say boolean isBookingVisible;
#Override
public void onBindViewHolder(final RecyclerView.ViewHolder holder, int position) {
Profile item = mListChatting.get(position);
if(!item.isBookingVisible){
holder.mFormBookingan.setVisibility(View.GONE);
holder.mDetailBookingan.setVisibility(View.VISIBLE);
}else{
//assume that one way is show first as default
holder.mViewOneWay.setVisibility(View.VISIBLE);
holder.mViewRoundTrip.setVisibility(View.GONE);
holder.mOneOway.setBackgroundResource(R.drawable.round_just_left_white_focus);
holder.mRoundTrip.setBackgroundResource(R.drawable.state_pressed_booking_button_left);
holder.mSendBooking.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
item.isBookingVisible = false;
//Use notiyItemChanged(position); or notifyDataSetChanged(); here as per your selection criterion
Log.d("TAG", "CEK 2 : " + viewable);
}
});
}

You may have to call notifyDataSetChanged() after changing the value of viewable.

onBindViewHolder will be called when you notify your data set.
So you need to save the viewable in mListChatting. When you click the button, change the viewable in the mListChatting.
And then, change the code in onBindViewHolder
holder.mFormBookingan.setVisibility(item.getViewable() ? View.VISIBLE : View.GONE);

On refresh android will destroy the view and create new view with new adapter data. So you have to track the current state (visibility) of mFormBookingan. You can use a simple visibility list. When mFormBookingan state (visibility) change update it in visibility list so that whenever the list is refreshed, you can use it to check and set the last state (visibility) of your mFormBookingan. Here is an example
private ArrayList<Boolean> isVisible;
public MyAdapter(ArrayList<Boolean> isVisible){
// initial state list of mFormBookingan for each row of list
this.isVisible = isVisible;
}
public void onBindViewHolder(final MyViewHolder holder, final int position) {
if (isVisible.get(position)) {
holder.mFormBookingan.setVisibility(View.VISIBLE);
}else {
holder.mFormBookingan.setVisibility(View.GONE);
}
holder.mSendBooking.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (holder.mFormBookingan.getVisibility() == View.GONE){
holder.mFormBookingan.setVisibility(View.VISIBLE);
isVisible.set(position, true);
}else {
holder.mFormBookingan.setVisibility(View.GONE);
isVisible.set(position, false);
}
}
});
}
when you click mSendBooking the mFormBookingan visibility will change and it will remain same after sending new item to recyclerview.

Checkboxes not changing checked status in UI?

I have a ListView that I am trying to use with a checkable item list. I am calling the toggle() method on my list item class in the ArrayAdaptor, but the checkbox is not being ticked in the UI. However, I can confirm that the correct items are being selected in the UI, and that the "isChecked()" status reports back correctly--just the UI doesn't change at all. Are there any special methods I need to call to update the checkbox graphic for the UI?
To put it another way--how do I programmatically tell the UI that a checkbox should show up as "checked"? It seems this should be a very simple process, but I've been having a lot of trouble finding this information.
Code is as follows:
For the item data class in the ArrayAdaptor:
public class SelectedItemData extends CheckedTextView {
public String _item_name;
public String getItemName()
{
return _item_name;
}
public void setItemName(String in_name)
{
_item_name = in_name;
}
// methods
public SelectedItemData(Context context) {
super(context);
init();
}
public void init()
{
this._item_name = "UNSET";
this.setChecked(false);
}
#Override
public String toString()
{
return _item_name;
}
}
In the Activity class (located within the onCreate method):
_selectedItemsListView = (ListView) findViewById(R.id.selected_items_listview);
_selectedItemsListView.setItemsCanFocus(false);
_selectedItemsListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
_selectedItemsListView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> listview, View view, int position, long id) {
#SuppressWarnings("unchecked")
ArrayAdapter<SelectedItemData> itemsAdapter = (ArrayAdapter<SelectedItemData>)_selectedItemsListView.getAdapter();
SelectedItemData selectedItem = itemsAdapter.getItem(position);
selectedItem.toggle();
Toast.makeText(view.getContext(), "Item " + selectedItem.getItemName() + " Selected!", Toast.LENGTH_SHORT).show();
Log.d(TAG, "Is Item Checked? " + selectedItem.isChecked());
_selectedItemsListView.setAdapter(itemsAdapter);
}
});
Any guidance on how to enable the UI to properly display that one of the items have been selected/checked would be great. Thanks!

You have to update your adapter with the new item and set it to the listview. (itemsAdapter.setItem(item,position))