Develop Reference

Getting focus of EditText inside RecyclerView

I'm implementing an application in which user can store Debit Cards and later they can use it by just entering the CVV number of the same card. I have used RecyclerView for all the items(Debit Cards) stored by the user. Everything is working fine, view is rendering all good and I have used LinearLayoutManager to show Horizontal scroll.
Now the problem which I am facing is whenever I try to enter CVV of any card as soon as I click on it the view gets shifted towards the last item of the list of Stored Cards, So if I'm having three cards stored in my list and I try to enter CVV for the first one the view is shifting directly to the third card but the focus remains on the first cards EditText. I don't know what's going on with the same. I'm sharing some code part for the same.
Setting adapter and defining horizontal scroll :-
recyclerAdapter = new RecyclerStoredCardAdapter(mContext, storedCards);
LinearLayoutManager layoutManager
= new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
storedCardListRecycler.setLayoutManager(layoutManager);
storedCardListRecycler.setVisibility(View.VISIBLE);
storedCardListRecycler.setAdapter(recyclerAdapter);
Sharing the screenshots with this so it will get clear. Any help would be appreciable. Thanks.

I have did this using ListView not with RecyclerView
But you can do with RecyclerView also.
Here is my used class demo.
SettingItemListViewAdapter.java
/**
* Created by vishalchhodwani on 18/10/16.
*/
public class SettingItemListViewAdapter extends BaseAdapter {
private final String TAG = "SettingItemListViewAdapter";
Context context;
List<SettingListViewItem> settingItemList;
OnMyClickListeners onMyClickListeners;
MyDatabaseAdapter myDatabaseAdapter;
public SettingItemListViewAdapter(Context context, List<SettingListViewItem> settingItemList) {
this.context = context;
this.settingItemList = settingItemList;
myDatabaseAdapter = new MyDatabaseAdapter(context);
}
public void setMyClickListener(OnMyClickListeners onMyClickListeners) {
this.onMyClickListeners = onMyClickListeners;
}
#Override
public int getCount() {
return settingItemList.size();
}
#Override
public Object getItem(int position) {
return settingItemList.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.setting_listview_item, parent, false);
holder.settingListViewForm = (RelativeLayout) convertView.findViewById(R.id.settingListViewItem_form1);
holder.vrijeTekst = (EditText) convertView.findViewById(R.id.settingListViewItem_ed_virje_row1);
holder.kenteken = (EditText) convertView.findViewById(R.id.settingListViewItem_ed_kenketen_row1);
holder.checkRow = (ImageView) convertView.findViewById(R.id.settingListViewItem_check_row1);
holder.deleteRow = (ImageView) convertView.findViewById(R.id.settingListViewItem_deleteRow);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.vrijeTekst.setText(settingItemList.get(position).getItemVrijeTekst());
holder.kenteken.setText(settingItemList.get(position).getItemKenteken());
boolean isSelected = settingItemList.get(position).isItemSelected();
holder.checkRow.setImageResource(isSelected ? R.drawable.checked : R.drawable.uncheked);
holder.vrijeTekst.setTag(position);
holder.vrijeTekst.setOnFocusChangeListener(new View.OnFocusChangeListener() {
public void onFocusChange(final View v, boolean hasFocus) {
try {
if (!hasFocus) {
if (settingItemList.size() > 0) {
int position = (int) v.getTag();
EditText Caption = (EditText) v;
settingItemList.get(position).setItemVrijeTekst(Caption.getText().toString());
}
} else {
EditText caption = (EditText) v;
caption.setCursorVisible(true);
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
holder.kenteken.setTag(position);
holder.kenteken.setOnFocusChangeListener(new View.OnFocusChangeListener() {
public void onFocusChange(final View v, boolean hasFocus) {
try {
if (!hasFocus) {
if (settingItemList.size() > 0) {
int position = (int) v.getTag();
EditText Caption = (EditText) v;
settingItemList.get(position).setItemKenteken(Caption.getText().toString());
}
} else {
EditText caption = (EditText) v;
caption.setCursorVisible(true);
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
holder.checkRow.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (myDatabaseAdapter.isAvailableInTable(settingItemList.get(position).getItemId()))
onMyClickListeners.onSelectButtonClicked(position);
}
});
holder.deleteRow.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
onMyClickListeners.onDeleteItemButtonClicked(position);
}
});
if (getCount() == position + 1) {
holder.vrijeTekst.requestFocus();
holder.vrijeTekst.performClick();
}
return convertView;
}
public static class ViewHolder {
RelativeLayout settingListViewForm;
EditText vrijeTekst, kenteken;
ImageView checkRow, deleteRow;
}
}
SettingN_New.java (It is a fragment)
public class SettingN_New extends Fragment implements OnClickListener, OnMyClickListeners {
private final String TAG = "SettingN_New";
Context context;
private TextView tv_demo;
ToggleButton togglebtn_save;
Button btn_save, btn_add;
ListView settingItemListView;
List<SettingListViewItem> settingItemList;
SettingItemListViewAdapter settingItemListViewAdapter;
MyDatabaseAdapter myDatabaseAdapter;
TinyDB loginpref;
boolean isNewRowAdded = true;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
//This line of code will stay focus on selected edittext in list
getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST);
ActionBar bar = getActivity().getActionBar();
bar.show();
View rootView = inflater.inflate(R.layout.setting_new, container, false);
initializeViews(rootView);
setUI();
getListOfItems();
return rootView;
}
private void setUI() {
try {
if (loginpref.getBoolean(ConstantLib.PREF_AUTO_LOGIN)) {
togglebtn_save.setChecked(true);
} else {
togglebtn_save.setChecked(false);
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
private void initializeViews(View rootView) {
context = getActivity();
LayoutInflater inflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View headerView = inflater.inflate(R.layout.setting_listview_header, null);
btn_save = (Button) headerView.findViewById(R.id.btn_save);
btn_add = (Button) headerView.findViewById(R.id.btn_add);
togglebtn_save = (ToggleButton) headerView.findViewById(R.id.togglebtn_save);
tv_demo = (TextView) headerView.findViewById(R.id.tv_demo);
settingItemList = new ArrayList<>();
settingItemListView = (ListView) rootView.findViewById(R.id.setting_listView);
settingItemListView.setClickable(true);
settingItemListView.refreshDrawableState();
settingItemListView.addHeaderView(headerView);
settingItemListView.setItemsCanFocus(true);
settingItemListViewAdapter = new SettingItemListViewAdapter(context, settingItemList);
settingItemListViewAdapter.setMyClickListener(this);
settingItemListView.setAdapter(settingItemListViewAdapter);
myDatabaseAdapter = new MyDatabaseAdapter(context);
loginpref = new TinyDB(getActivity());
btn_save.setOnClickListener(this);
btn_add.setOnClickListener(this);
tv_demo.setOnClickListener(this);
togglebtn_save.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub
loginpref.putBoolean(ConstantLib.PREF_AUTO_LOGIN, isChecked);
}
});
}
private void getListOfItems() {
settingItemList.clear();
settingItemList.addAll(myDatabaseAdapter.getAllData());
if (settingItemList.size() == 0) {
isNewRowAdded = true;
SettingListViewItem settingListViewItem = new SettingListViewItem();
settingListViewItem.setItemId(settingItemList.size() + "");
settingListViewItem.setItemVrijeTekst("");
settingListViewItem.setItemKenteken("");
settingListViewItem.setItemSelected(false);
settingItemList.add(settingListViewItem);
} else {
isNewRowAdded = false;
}
notifyDataSetChanged();
}
private void hideKeyboard() {
// Check if no view has focus:
View view = getActivity().getCurrentFocus();
if (view != null) {
InputMethodManager inputManager = (InputMethodManager) getActivity()
.getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(view.getWindowToken(),
InputMethodManager.HIDE_NOT_ALWAYS);
}
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_save:
clearFocus();
hideKeyboard();
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
if (isValidationSuccess())
saveAllData();
}
}, 200);
break;
case R.id.btn_add:
addAnotherRow();
break;
case R.id.tv_demo:
clickedOnTvDemo();
break;
}
}
private void clickedOnTvDemo() {
try {
Intent i = new Intent(getActivity(), Setting_exp_activity.class);
startActivity(i);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
private boolean isValidationSuccess() {
Log.e(TAG, "isValidationSuccess() called : settingItemList.size()==" + settingItemList.size());
for (int i = 0; i < settingItemList.size(); i++) {
if (settingItemList.get(i).getItemVrijeTekst().equalsIgnoreCase("") || settingItemList.get(i).getItemKenteken().equalsIgnoreCase("")) {
showToast("Veld mag niet leeg zijn");// showToast("Fields should not be empty!!");
return false;
}
}
return true;
}
private void saveAllData() {
Log.e(TAG, "saveAllData() called");
myDatabaseAdapter.clearTable();
for (int i = 0; i < settingItemList.size(); i++) {
isNewRowAdded = false;
SettingListViewItem settingListViewItem = new SettingListViewItem();
settingListViewItem.setItemId(i + "");
settingListViewItem.setItemVrijeTekst(settingItemList.get(i).getItemVrijeTekst());
settingListViewItem.setItemKenteken(settingItemList.get(i).getItemKenteken());
settingListViewItem.setItemSelected(settingItemList.get(i).isItemSelected());
myDatabaseAdapter.insertDataToTable(settingListViewItem);
}
DialogUtils.showInfoDialog(getActivity(),
"Instellingen opgeslagen");
}
private void addAnotherRow() {
Log.e(TAG, "addAnotherRow() called");
if (settingItemList.size() > 0 && !isNewRowAdded) {
if (!settingItemList.get(settingItemList.size() - 1).getItemVrijeTekst().equalsIgnoreCase("") && !settingItemList.get(settingItemList.size() - 1).getItemKenteken().equalsIgnoreCase("")) {
isNewRowAdded = true;
Log.e(TAG, "addAnotherRow() called check 1");
SettingListViewItem settingListViewItem = new SettingListViewItem();
settingListViewItem.setItemId(settingItemList.size() + "");
settingListViewItem.setItemVrijeTekst("");
settingListViewItem.setItemKenteken("");
settingListViewItem.setItemSelected(false);
settingItemList.add(settingListViewItem);
notifyDataSetChanged();
} else {
Log.e(TAG, "addAnotherRow() called check 2");
showToast("Al toegevoegd");// showToast("Already Added!!");
}
} else {
if (!isNewRowAdded) {
isNewRowAdded = true;
Log.e(TAG, "addAnotherRow() called check 3");
SettingListViewItem settingListViewItem = new SettingListViewItem();
settingListViewItem.setItemId("0");
settingListViewItem.setItemVrijeTekst("");
settingListViewItem.setItemKenteken("");
settingListViewItem.setItemSelected(false);
settingItemList.add(settingListViewItem);
notifyDataSetChanged();
} else {
Log.e(TAG, "addAnotherRow() called check 4");
showToast("Al toegevoegd");// showToast("Already Added!!");
}
}
settingItemListView.setSelection(settingItemList.size());
Log.e(TAG, "addAnotherRow() called check 5");
Log.e(TAG, "after settingItemList.size()==" + settingItemList.size());
}
#Override
public void onDeleteItemButtonClicked(int position) {
Log.e(TAG, "onDeleteItemButtonClicked() position==" + position);
if (myDatabaseAdapter.getAllData().size() > 0)
showAlertForDeleteItem(position);
else
showToast("Er is geen item te verwijderen"); // showToast("No item to Delete");
}
#Override
public void onSelectButtonClicked(int position) {
Log.e(TAG, "onSelectButtonClicked() position==" + position);
for (int i = 0; i < settingItemList.size(); i++) {
Log.e(TAG, "onSelectButtonClicked() called check 3");
settingItemList.get(i).setItemSelected(false);
}
settingItemList.get(position).setItemSelected(true);
notifyDataSetChanged();
}
private void showAlertForDeleteItem(final int position) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(context);
alertDialog.setMessage("Weet je zeker dat je dit item wilt wissen?");//alertDialog.setMessage("Are you sure you want to delete this item?");
// ja==yes
alertDialog.setPositiveButton("Ja", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
myDatabaseAdapter.deleteTableRow(settingItemList.get(position).getItemId() + "");
settingItemList.remove(position);
settingItemListViewAdapter.notifyDataSetChanged();
if (settingItemList.size() == position + 1) {
isNewRowAdded = false;
}
if (settingItemList.size() == 0) {
isNewRowAdded = false;
addAnotherRow();
}
}
});
//Annuleer==cancel
alertDialog.setNegativeButton("Annuleer", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
alertDialog.show();
}
private void notifyDataSetChanged() {
settingItemListViewAdapter.notifyDataSetChanged();
}
private void showToast(String message) {
Toast.makeText(context, message, Toast.LENGTH_LONG).show();
}
public void clearFocus() {
if (getActivity().getWindow().getCurrentFocus() != null) {
getActivity().getWindow().getCurrentFocus().clearFocus();
}
}
}
I am giving you my whole class. why? Because it will give you more understanding that how I used it with ListView.
Test it and Let me know. :)
Note
This line of code is very important - getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST);

Not able to reproduce this issue. Let me know if the following code does what you are facing. If not, can provide more feedback if you share you Adapter's Code.
MainActivity.java
public class MainActivity
extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
MyAdapter adapter = new MyAdapter();
recyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false));
recyclerView.setAdapter(adapter);
}
}
public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
#Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycler_ite, parent);
return new MyViewHolder(view);
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
((EditText)((MyViewHolder)holder).mBinding.findViewById(R.id.editText)).setHint(position + " ");
}
#Override
public int getItemCount() {
return 100;
}
public class MyViewHolder extends RecyclerView.ViewHolder {
View mBinding;
public MyViewHolder(View binding) {
super(binding);
this.mBinding = binding;
}
}
}
The 2xml layouts:
<EditText
android:id="#+id/editText"
android:layout_height="200dp"
android:layout_width="300dp"/>
</android.support.v7.widget.CardView>
My main_activity.xml is as follows:
<RelativeLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_height="wrap_content"
android:layout_width="match_parent"/>
</RelativeLayout>
As you can see this is the simplest case. Let me know if I missed anything.

make a List of HashMap type in recycler view adapter

I am using this liabray for swipe gestures. https://github.com/nikhilpanju/RecyclerViewEnhanced.
In the MainAdapter.java class recyclerView contains List but i want to replace this to List> type. When i do this, so many errors appear. Kindly guide me how can i do this or suggest me any tutorial to do that.
MainAdapter.java
public class MainAdapter extends RecyclerView.Adapter<MainAdapter.MainViewHolder> {
LayoutInflater inflater;
List<RowModel> modelList;
public MainAdapter(Context context, List<RowModel> list) {
inflater = LayoutInflater.from(context);
modelList = new ArrayList<>(list);
}
#Override
public MainViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.recycler_row, parent, false);
return new MainViewHolder(view);
}
#Override
public void onBindViewHolder(MainViewHolder holder, int position) {
holder.bindData(modelList.get(position));
}
#Override
public int getItemCount() {
return modelList.size();
}
class MainViewHolder extends RecyclerView.ViewHolder {
TextView mainText, subText;
public MainViewHolder(View itemView) {
super(itemView);
mainText = (TextView) itemView.findViewById(R.id.mainText);
subText = (TextView) itemView.findViewById(R.id.subText);
}
public void bindData(RowModel rowModel) {
mainText.setText(rowModel.getMainText());
subText.setText(rowModel.getSubText());
}
}
}
Activity:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_admin_panel);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
unclickableRows = new ArrayList<>();
unswipeableRows = new ArrayList<>();
dialogItems = new String[25];
for (int i = 0; i < 25; i++) {
dialogItems[i] = String.valueOf(i + 1);
}
mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
mAdapter = new MainAdapter(this, getData());
mRecyclerView.setAdapter(mAdapter);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
onTouchListener = new RecyclerTouchListener(this, mRecyclerView);
onTouchListener
.setIndependentViews(R.id.rowButton)
.setViewsToFade(R.id.rowButton)
.setClickable(new RecyclerTouchListener.OnRowClickListener() {
#Override
public void onRowClicked(int position) {
util.shortToast(getApplicationContext(), "Row " + (position + 1) + " clicked!");
}
#Override
public void onIndependentViewClicked(int independentViewID, int position) {
util.shortToast(getApplicationContext(), "Button in row " + (position + 1) + " clicked!");
}
})
.setSwipeOptionViews(R.id.add, R.id.edit, R.id.change)
.setSwipeable(R.id.rowFG, R.id.rowBG, new RecyclerTouchListener.OnSwipeOptionsClickListener() {
#Override
public void onSwipeOptionClicked(int viewID, int position) {
String message = "";
if (viewID == R.id.add) {
message += "Add";
} else if (viewID == R.id.edit) {
message += "Edit";
} else if (viewID == R.id.change) {
message += "Change";
}
message += " clicked for row " + (position + 1);
util.shortToast(getApplicationContext(), message);
}
});
mRecyclerView.addOnItemTouchListener(onTouchListener);
// Detect touched area
detector = new Swipe(this,this);
db = new DB(getApplicationContext());
Bundle bundle = getIntent().getExtras();
if(bundle != null) {
String id = bundle.getString("id");
Toast.makeText(this, "Welcome " + db.getUsernameById(id), Toast.LENGTH_LONG).show();
}
//get references of layout
// adapter = new AdapterUsers(this, R.layout.textview_users, arrayList);
// listView = (ListView) findViewById(R.id.users);
// listView.setAdapter(adapter);
//
// showAllUsers();
}
public void showAllUsers() {
try {
Cursor cursor = db.selectAllUsers();
cursor.moveToFirst();
adapter.clear();
if (cursor.getCount() == 0) {
Toast.makeText(this, "Empty user list", Toast.LENGTH_SHORT).show();
} else {
for (int i = 0; i < cursor.getCount(); i++) {
HashMap<String, Object> hm = new HashMap<String, Object>();
hm.put(ID, cursor.getString(cursor.getColumnIndex(db.ID_USER)));
hm.put(USERNAME, cursor.getString(cursor.getColumnIndex(db.NAME_USER)));
arrayList.add(hm);
cursor.moveToNext();
}
}
} catch (Exception e) {
Log.d("Show users", " failed due to " + e.getMessage());
}
}
// Swipe interface
#Override
public void onSwipe(int direction) {
String str = "";
switch (direction) {
case Swipe.SWIPE_RIGHT :
listView.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
//deleteUser(id);
Toast.makeText(AdminPanel.this, "user deleted", Toast.LENGTH_LONG).show();
}
});
str = "Swipe Right";
break;
case Swipe.SWIPE_LEFT : str = "Swipe Left";
break;
case Swipe.SWIPE_DOWN : str = "Swipe Down";
break;
case Swipe.SWIPE_UP : str = "Swipe Up";
break;
}
Toast.makeText(this, str, Toast.LENGTH_SHORT).show();
}
#Override
public void onDoubleTap() {
Toast.makeText(this, "Double Tap", Toast.LENGTH_SHORT).show();
}
#Override
public boolean dispatchTouchEvent(MotionEvent ev) {
if (touchListener != null) touchListener.getTouchCoordinates(ev);
return super.dispatchTouchEvent(ev);
}
#Override
public void setOnActivityTouchListener(OnActivityTouchListener listener) {
this.touchListener = listener;
}
private List<RowModel> getData() {
List<RowModel> list = new ArrayList<>(25);
for (int i = 0; i < 25; i++) {
list.add(new RowModel("Row " + (i + 1), "Some Text... "));
}
return list;
}
}

you can change your getData() method and make it return HashMap.
private HashMap <String,String> getData() {
HashMap <String,String> list = new HashMap <String,String>();
for (int i = 0; i < 25; i++) {
list.put(i,"Text");
}
return list;
}
now in your Adapter you can handle it like...
public class MainAdapter extends RecyclerView.Adapter<MainAdapter.MainViewHolder> {
LayoutInflater inflater;
<HashMap<String,String> modelList;
public MainAdapter(Context context, <HashMap<String,String> modelList) {
this.inflater = LayoutInflater.from(context);
this.modelList = modelList;
}
#Override
public MainViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.recycler_row, parent, false);
return new MainViewHolder(view);
}
#Override
public void onBindViewHolder(MainViewHolder holder, int position) {
//holder.bindData();
holder.mainText.setText(modelList.get(position)); // value for the given key
}
#Override
public int getItemCount() {
return modelList.size();
}
class MainViewHolder extends RecyclerView.ViewHolder {
TextView mainText, subText;
public MainViewHolder(View itemView) {
super(itemView);
mainText = (TextView) itemView.findViewById(R.id.mainText);
subText = (TextView) itemView.findViewById(R.id.subText);
}
}
}

ExpandableRecyclerAdapter How to force item to move up while expanding an item

This is my ExpandableRecyclerAdapter adapter
public class MyAdapter extends ExpandableRecyclerAdapter<MyAdapter.ProductParentViewHolder, MyAdapter.ProductChildViewHolder> {
private LayoutInflater mInflater;
private Context context;
private List<? extends ParentListItem> mParentItemList;
public MyAdapter(Context context, List<ParentListItem> itemList) {
super(itemList);
mInflater = LayoutInflater.from(context);
this.context = context;
this.mParentItemList = itemList;
}
#Override
public ProductParentViewHolder onCreateParentViewHolder(ViewGroup viewGroup) {
View view = mInflater.inflate(R.layout.list_item_crime_parent, viewGroup, false);
return new ProductParentViewHolder(view);
}
#Override
public ProductChildViewHolder onCreateChildViewHolder(ViewGroup viewGroup) {
View view = mInflater.inflate(R.layout.list_item_crime_child, viewGroup, false);
return new ProductChildViewHolder(view);
}
#Override
public void onBindParentViewHolder(ProductParentViewHolder crimeParentViewHolder, int i, ParentListItem parentListItem) {
Product product = (Product) parentListItem;
crimeParentViewHolder.productName.setText(product.getBrandName() + " " + product.getProductName());
Glide.with(context)
.load(product.getProductImagePath())
.placeholder(R.drawable.placeholder)
.error(R.drawable.placeholder)
.into(crimeParentViewHolder.thumbnail);
}
#Override
public void onBindChildViewHolder(ProductChildViewHolder productChildViewHolder, int i, Object childListItem) {
final ProductVariant productVariant = (ProductVariant) childListItem;
productChildViewHolder.mCrimeDateText.setText(productVariant.getVariantName());
productChildViewHolder.variantMrp.setText(context.getString(R.string.positive_amount, productVariant.getMRP()));
productChildViewHolder.variantMrp.setPaintFlags(productChildViewHolder.variantMrp.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
productChildViewHolder.variantSellPrice.setText(context.getString(R.string.positive_amount, productVariant.getSellPrice()));
//productChildViewHolder.variantMrp.setText(productVariant.getMRP().toString());
//productChildViewHolder.variantSellPrice.setText(productVariant.getSellPrice().toString());
if (productVariant.getInCart() == 0) {
productChildViewHolder.btnProductDetailAddToCart.setVisibility(View.VISIBLE);
productChildViewHolder.btnProductDetailMinus.setVisibility(View.GONE);
productChildViewHolder.btnProductDetailQty.setVisibility(View.GONE);
productChildViewHolder.btnProductDetailPlus.setVisibility(View.GONE);
} else {
productChildViewHolder.btnProductDetailAddToCart.setVisibility(View.GONE);
productChildViewHolder.btnProductDetailMinus.setVisibility(View.VISIBLE);
productChildViewHolder.btnProductDetailQty.setVisibility(View.VISIBLE);
productChildViewHolder.btnProductDetailPlus.setVisibility(View.VISIBLE);
}
int quantity = productVariant.getInCart();
productChildViewHolder.btnProductDetailQty.setText(Integer.toString(quantity));
productChildViewHolder.btnProductDetailAddToCart.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
productVariant.setInCart(1);
//Utility.loadShoppingCartItems();
notifyDataSetChanged();
invalidateOptionsMenu();
//holder.db.addItem(new CartItem(1, productVariant.getProductID(), productVariant.getVariantID(), 1));
}
});
productChildViewHolder.btnProductDetailPlus.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
productVariant.setInCart(1 + productVariant.getInCart());
notifyDataSetChanged();
invalidateOptionsMenu();
//if (productVariant.getInCart() > 0) {
//int count = holder.db.updateSingleRow(productVariant.getProductID(), productVariant.getVariantID(), productVariant.getInCart());
//}
}
});
productChildViewHolder.btnProductDetailMinus.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
productVariant.setInCart(productVariant.getInCart() - 1);
notifyDataSetChanged();
invalidateOptionsMenu();
if (productVariant.getInCart() == 0) {
//int count = holder.db.deleteSingleRow(productVariant.getProductID(), productVariant.getVariantID());
} else if (productVariant.getInCart() > 0) {
//int count = holder.db.updateSingleRow(productVariant.getProductID(), productVariant.getVariantID(), productVariant.getInCart());
}
//Utility.displayToast(holder.db.getItemsCount() + "");
}
});
//crimeChildViewHolder.mCrimeSolvedCheckBox.setChecked(productVariant.isSolved());
}
public class ProductParentViewHolder extends ParentViewHolder {
private static final float INITIAL_POSITION = 0.0f;
private static final float ROTATED_POSITION = 180f;
private final boolean HONEYCOMB_AND_ABOVE = Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB;
public TextView productName;
public ImageView thumbnail;
public ImageButton mParentDropDownArrow;
public ProductParentViewHolder(View itemView) {
super(itemView);
productName = (TextView) itemView.findViewById(R.id.productName);
thumbnail = (ImageView) itemView.findViewById(R.id.thumbnail);
// mParentDropDownArrow = (ImageButton) itemView.findViewById(R.id.parent_list_item_expand_arrow);
}
#SuppressLint("NewApi")
#Override
public void setExpanded(boolean expanded) {
super.setExpanded(expanded);
if (!HONEYCOMB_AND_ABOVE) {
return;
}
if (expanded) {
// mParentDropDownArrow.setRotation(ROTATED_POSITION);
} else {
// mParentDropDownArrow.setRotation(INITIAL_POSITION);
}
}
}
public class ProductChildViewHolder extends ChildViewHolder {
public TextView mCrimeDateText;
public TextView variantMrp;
public TextView variantSellPrice;
public Button btnProductDetailAddToCart, btnProductDetailPlus, btnProductDetailMinus;
public TextView btnProductDetailQty;
public ProductChildViewHolder(View itemView) {
super(itemView);
mCrimeDateText = (TextView) itemView.findViewById(R.id.variantName);
variantMrp = (TextView) itemView.findViewById(R.id.productVariantMrp);
variantSellPrice = (TextView) itemView.findViewById(R.id.productVariantSellPrice);
btnProductDetailAddToCart = (Button) itemView.findViewById(R.id.btnProductDetailAddToCart);
btnProductDetailPlus = (Button) itemView.findViewById(R.id.btnProductDetailPlus);
btnProductDetailMinus = (Button) itemView.findViewById(R.id.btnProductDetailMinus);
btnProductDetailQty = (TextView) itemView.findViewById(R.id.btnProductDetailQty);
}
}
}
When i am bottom of the page and click on item it expands, but exapnded child item doesn't shows to user because it is bottom in the screen.
I want to move that item up in the screen and show expanded items to user.
How can i do that?

You can simply use the method setSelectedGroup()
expandableListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
#Override
public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
expandableListView.setSelectedGroup(groupPosition);
return true;
}
});
This will move the selected group to the top
EDIT
Finally I came out with a solution for your ExpandableRecyclerAdapter also. Simply put this method inside your adapter implementation. Also you will require the reference of the recyclerView inside the adapter which you can pass to the adapter at the time of initialization.
int lastPos = -1;
#Override
public void onParentListItemExpanded(int position) {
List<? extends ParentListItem> parentItemList = this.getParentItemList();
collapseAllParents();
int finalPos = position;
if (lastPos != -1 && lastPos < position) {
finalPos = position - parentItemList.get(lastPos).getChildItemList().size();
}
expandParent(finalPos);
mRecyclerView.smoothScrollToPosition(finalPos);
lastPos = position;
}
I found this issue at https://github.com/bignerdranch/expandable-recycler-view/issues/156 . Although the solution given there didn't work. Slight tweaking to that make it work.

Use this following code in your expandable listview click listener. Do something liket his
yourExpandableListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
#TargetApi(Build.VERSION_CODES.LOLLIPOP)
#Override
public boolean onGroupClick(final ExpandableListView parent, View v, final int groupPosition, long id) {
....
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
parent.smoothScrollToPositionFromTop(groupPosition + 1, 0);
}
},100);
....
return true;
}
});

Use AnimatedExpandableListView

How to update data in RecylerView adapter

I have a recyclerview adapter in which each view has a button. I want to implement a fuc=nctionality such that if I click button on any view all the views of the recyclerview should be updated. How this can be achieved ?
This is what I have done in onBindViewHolder
public class StoryItemAdapter extends RecyclerView.Adapter<StoryItemAdapter.ViewHolder> {
LayoutInflater inflater;
Context context;
Bitmap bm;
ImageLoader imloader;
static ArrayList<StoryDetails> stories;
OnItemClickListener mItemClickListener;
public StoryItemAdapter(Context context,ArrayList<StoryDetails> stories) {
this.context = context;
this.stories = stories;
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
imloader = ImageLoader.getInstance();
imloader.init(ImageLoaderConfiguration.createDefault(context));
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public int getItemCount() {
return stories != null ? stories.size() : 0;
}
#SuppressWarnings("deprecation")
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
if(stories.get(position).getType()==null) {
holder.user_handle.setText(stories.get(position).getUsername() + "( " + stories.get(position).getHandle() + " )");
File file = imloader.getDiscCache().get(stories.get(position).getImage());
if (!file.exists()) {
DisplayImageOptions options = new DisplayImageOptions.Builder()
.cacheOnDisc()
.build();
imloader.displayImage(stories.get(position).getImage(), holder.image, options);
} else {
holder.image.setImageURI(Uri.parse(file.getAbsolutePath()));
}
holder.about.setText(stories.get(position).getAbout());
holder.followers.setText("Followers\n\r" + stories.get(position).getFollowers());
holder.following.setText("Following\n\r" + stories.get(position).getFollowing());
}
else
{
holder.user_handle.setText(stories.get(position).getTitle());
File file = imloader.getDiscCache().get(stories.get(position).getSi());
if (!file.exists()) {
DisplayImageOptions options = new DisplayImageOptions.Builder()
.cacheOnDisc()
.build();
imloader.displayImage(stories.get(position).getSi(), holder.image, options);
} else {
holder.image.setImageURI(Uri.parse(file.getAbsolutePath()));
}
holder.about.setText(stories.get(position).getDescription());
holder.followers.setText("Likes \n\r" + stories.get(position).getLikes_count());
holder.following.setText("Comments \n\r" + stories.get(position).getComment_count());
}
if(stories.get(position).getIs_following())
{
holder.follow.setText("Following");
}
else
holder.follow.setText("Follow");
final int p = position;
final ViewHolder h = holder;
holder.follow.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(stories.get(p).getIs_following())
{
stories.get(p).setIs_following(false);
h.follow.setText("Follow");
}
else {
stories.get(p).setIs_following(true);
h.follow.setText("Following");
}
for(int i =0;i <stories.size();i++) {
if (stories.get(p).getDb() != null) {
if(stories.get(p).getDb().equals(stories.get(i).getId()))
{
stories.get(p).setIs_following(stories.get(i).getIs_following());
}
}
}
}
});
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View itemView = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.story_adapter, viewGroup,
false);
return new ViewHolder(itemView);
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
ImageView image;
TextView user_handle, about, followers,following,userSince;
Button follow;
public ViewHolder(View itemView) {
super(itemView);
user_handle = (TextView) itemView.findViewById(R.id.user_handle);
about = (TextView) itemView.findViewById(R.id.about);
followers = (TextView) itemView.findViewById(R.id.followers);
following = (TextView) itemView.findViewById(R.id.following);
// userSince = (TextView) itemView.findViewById(R.id.user_since);
image = (ImageView) itemView.findViewById(R.id.user_image);
follow =(Button) itemView.findViewById(R.id.follow);
RelativeLayout.LayoutParams rlp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
image.setLayoutParams(rlp);
image.setAdjustViewBounds(true);
image.setScaleType(ImageView.ScaleType.FIT_CENTER);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View v) {
if (mItemClickListener != null) {
mItemClickListener.onItemClick(v, getPosition());
}
}
}
public interface OnItemClickListener {
public void onItemClick(View view , int position);
}
public void SetOnItemClickListener(final OnItemClickListener mItemClickListener) {
this.mItemClickListener = mItemClickListener;
}
}

You need to notify the Adapter about any dataset changed.
Try this..
holder.follow.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(stories.get(p).getIs_following())
{
stories.get(p).setIs_following(false);
h.follow.setText("Follow");
}
else {
stories.get(p).setIs_following(true);
h.follow.setText("Following");
}
for(int i =0;i <stories.size();i++) {
if (stories.get(p).getDb() != null) {
if(stories.get(p).getDb().equals(stories.get(i).getId()))
{
stories.get(p).setIs_following(stories.get(i).getIs_following());
}
}
}
notifyDataSetChanged();
}

RecyclerView items positions change or removed when scrolling

I have a problem that I have been trying to solve for too long but I can't know what causes the problem.
I have a marks list that contains Test objects and subject strings that I use as sections between marks, I use getClass() method to determine if an object is a string or Test, if it is a string, I hide the test's RelativeLayout, if it is a test then I hide the RelativeLayout of the subject. But when scrolling, items get removed and and re-added randomly.
my adapter's class:
public class MarksAdapter extends RecyclerView.Adapter<MarksAdapter.MyHolder>{
public class MyHolder extends RecyclerView.ViewHolder{
RelativeLayout card;
TextView title;
TextView total;
View divider;
int posito;
RelativeLayout group;
TextView groupTitle;
TextView groupMark;
public MyHolder(View itemView) {
super(itemView);
this.card = (RelativeLayout)itemView.findViewById(R.id.card);
this.title = (TextView)itemView.findViewById(R.id.title);
this.total = (TextView)itemView.findViewById(R.id.mark);
this.divider = itemView.findViewById(R.id.item_divider);
this.group = (RelativeLayout)itemView.findViewById(R.id.group);
this.groupTitle = (TextView)itemView.findViewById(R.id.group_title);
this.groupMark = (TextView)itemView.findViewById(R.id.group_mark);
}
}
final ArrayList marks;
Context ctx;
String selectedSem;
TestDatabase db;
public MarksAdapter(Context c, ArrayList marks,String sem,TestDatabase db,ArrayList<Integer> sections){
this.marks = marks;
ctx = c;
selectedSem = sem;
this.db = db;
}
#Override
public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new MyHolder(LayoutInflater.from(ctx).inflate(R.layout.mark_child, parent, false));
}
int lastPosition = -1;
int offset = 0;
#Override
public void onBindViewHolder(final MyHolder holder, final int positioner) {
holder.posito = positioner;
if(marks.get(holder.posito).getClass() == Test.class) {
holder.group.setVisibility(View.GONE);
//mark
final Test test = (Test)marks.get(positioner);
holder.title.setText(test.getName());
holder.total.setText(String.format(ctx.getString(R.string.new_m_sum), test.getMarkGot(), test.getMarkOver()));
//add here
holder.card.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(ctx,addTest.class);
Test mark = (Test)marks.get(holder.posito);
i.putExtra("t_name",mark.getName());
i.putExtra("subject",mark.getSubject());
i.putExtra("mark_got",mark.getMarkGot());
i.putExtra("mark_over",mark.getMarkOver());
i.putExtra("mode","edit");
i.putExtra("oldId", mark.getId());
ctx.startActivity(i);
}
});
holder.card.setLongClickable(true);
holder.card.setOnLongClickListener(new View.OnLongClickListener() {
#Override
public boolean onLongClick(final View v) {
final Dialog dialo = new Dialog(ctx);
dialo.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialo.setContentView(R.layout.material_dialog);
TextView title = (TextView) dialo.findViewById(R.id.title);
TextView body = (TextView) dialo.findViewById(R.id.body);
Button negative = (Button) dialo.findViewById(R.id.negative);
negative.setText(ctx.getString(R.string.cancel));
Button positive = (Button) dialo.findViewById(R.id.positive);
positive.setText(ctx.getString(R.string.Delete));
title.setText(ctx.getString(R.string.d));
body.setText(ctx.getString(R.string.q_delete) + " " + test.getName() + " " + ctx.getString(R.string.de_comp));
negative.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dialo.dismiss();
}
});
positive.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View vir) {
TestDatabase tb = new TestDatabase(ctx);
SemesterDatabase semesterDatabase = new SemesterDatabase(ctx);
tb.deleteTest(holder.posito, semesterDatabase.getSelected().getName());
MarksAdapter.this.notifyItemRemoved(holder.posito);
marks.remove(holder.posito);
for (int i = 0; i < marks.size(); i++) {
if(!(marks.get(i) instanceof Test)) {
String sub = String.valueOf(marks.get(i));
if(db.isNoValue(sub,selectedSem)){
marks.remove(i);
notifyItemRemoved(i);
}
}
}
dialo.dismiss();
}
});
dialo.show();
return true;
}
});
}else {
holder.group.setVisibility(View.VISIBLE);
holder.card.setVisibility(View.GONE);
//group
if(holder.posito == 0) {
LinearLayout.LayoutParams params = (LinearLayout.LayoutParams)holder.group.getLayoutParams();
params.setMargins(0,0,0,0);
holder.group.setLayoutParams(params);
}
String sub = String.valueOf(marks.get(holder.posito));
holder.groupTitle.setText(sub);
holder.groupMark.setText(db.getTotalSubjectMarks(sub,selectedSem));
}
if(lastPosition < holder.posito) {
if(holder.card.getVisibility() == View.VISIBLE) {
Animation slide = AnimationUtils.loadAnimation(ctx, R.anim.marks);
slide.setInterpolator(new AccelerateInterpolator());
slide.setDuration(700);
offset += 100;
slide.setStartOffset(offset);
holder.card.startAnimation(slide);
} else {
Animation slide = AnimationUtils.loadAnimation(ctx, R.anim.mark_groups);
slide.setInterpolator(new AccelerateInterpolator());
slide.setDuration(700);
offset += 50;
slide.setStartOffset(offset);
holder.group.startAnimation(slide);
}
lastPosition = holder.posito;
}
}
#Override
public int getItemCount() {
return marks.size();
}
}
Note: I already tried the itemViewType method but it didn't work for me
Thanks in advance!

I believe you missed to set holder.card back to visible, like this
if(marks.get(holder.posito).getClass() == Test.class) {
holder.card.setVisibility(View.Visible); //add back this
holder.group.setVisibility(View.GONE);