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Not able to put recycler view as ExpandableListView header layout

I want to display a recycler view inside the ExpandableListView header item.But I am getting an issue my header is not clickable when I put a recycler view in it.
Here is my code:-
header.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="1"
android:padding="8dp"
android:background="#color/grey">
<TextView
android:id="#+id/lblListHeader"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:paddingLeft="5dp"
android:textSize="15dp"
android:layout_weight=".25"
android:text="#"
android:textColor="#color/ModeltitleColor" />
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".65"
>
<android.support.v7.widget.RecyclerView
android:id="#+id/ivRecyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
/>
</LinearLayout>
<ImageView
android:id="#+id/iv_group_indicator"
android:layout_width="0dp"
android:layout_height="30dp"
android:layout_gravity="center_vertical"
android:layout_weight=".10"
android:src="#drawable/ic_arrow_drop_down_black_24dp" />
</LinearLayout>
</LinearLayout>
here I am setting the group:-
#Override
public View getGroupView(int i, boolean b, View view, ViewGroup viewGroup) {
if (view == null) {
view = LayoutInflater.from(context).inflate(R.layout.zonal_list_group, viewGroup, false);
}
TextView textView = view.findViewById(R.id.lblListHeader);
RecyclerView recyclerView=view.findViewById(R.id.ivRecyclerView);
recyclerView.setLayoutManager(new LinearLayoutManager(context,LinearLayoutManager.HORIZONTAL,false));
ZoneNameAdapter zoneNameAdapter =new ZoneNameAdapter(zonalSnapShotResponse.keyFigureDataGroups.get(i).zones,context);
recyclerView.setAdapter(zoneNameAdapter);
ImageView imageView = view.findViewById(R.id.iv_group_indicator);
textView.setText(zonalSnapShotResponse.keyFigureDataGroups.get(i).dataGroup);
imageView.setImageResource(R.drawable.ic_arrow_drop_down_black_24dp);
if (b) {
imageView.setRotation(180f);
} else {
imageView.setRotation(0f);
}
return view;
}
getChildItemCount does not get called when I put recycler view in the header.
I have tried multiple solutions but noting worked for me.Please help

How to update style of selected item inside ViewPager?

I want to update the style of the selected item inside a ViewPager.
How can I do this?
This is the UI design. As you can see, the "November" tab is selected, so the corresponding bar is highlighted in yellow.
The way I've implemented this is a ViewPager with a custom item (white, not highlighted):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.cardview.widget.CardView
android:layout_width="142dp"
android:layout_height="275dp"
android:layout_margin="0dp"
app:cardElevation="0dp"
app:cardBackgroundColor="#android:color/transparent">
<TextView
android:id="#+id/monthly_spend_month"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/December"
android:textColor="#color/aluminum"
android:textSize="20sp"
android:textStyle="normal"
android:layout_marginStart="22dp"
android:layout_marginTop="34dp"/>
<RelativeLayout
android:id="#+id/monthly_spend_card"
android:layout_marginTop="120dp"
android:layout_marginStart="22dp"
android:layout_width="120dp"
android:layout_height="155dp"
android:background="#drawable/monthlyspend_card_bg_inactive">
<TextView
android:id="#+id/monthly_spend_text"
android:textColor="#color/almost"
android:layout_marginTop="50dp"
android:layout_marginStart="22dp"
android:text="Total
spent"
android:textSize="#dimen/balanceDescTextSize"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/monthly_spend_amount"
android:textColor="#color/almost"
android:layout_marginTop="10dp"
android:layout_marginStart="22dp"
android:layout_below="#id/monthly_spend_text"
android:text="$ 254.98"
android:textSize="#dimen/balanceDescTextSize"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
I plan on doing the highlighting programmatically.
Here's some adapter code:
#NonNull
#Override
public Object instantiateItem(#NonNull ViewGroup container, int position) {
layoutInflater = LayoutInflater.from(context);
View view = layoutInflater.inflate(R.layout.monthlyspend_item, container, false);
TextView monthlySpendMonth, monthlySpendAmount;
monthlySpendCard = view.findViewById(R.id.monthly_spend_card);
monthlySpendMonth = view.findViewById(R.id.monthly_spend_month);
monthlySpendAmount = view.findViewById(R.id.monthly_spend_amount);
monthlySpendMonth.setText(monthlySpendings.get(position).getMonth());
monthlySpendAmount.setText(monthlySpendings.get(position).getAmountSpent());
container.addView(view, 0);
return view;
}
Any help would be appreciated!

I thing you are missing click listener :
view.setOnClickListener(new OnClickListener(){
public void onClick(View v){
// do you stuff here
}
});
((ViewPager)container).addView(view, 0)
Also inside instantiateItem() make int position as final.

you should change your model (in your case "monthlyspendings") at the selected item position.
then notify the adapter
adapter.notifyDataSetChanged()
and finally, custom selected view according to the model. for exapmle :
if(monthlySpendings.get(position).isSelected) monthlySpendCard.setBackgroundColor(Color.parseColor("#fcd14b"));

listview.setOnItemSelectedListener does not work

I'm using a string arrayList and a string arrayAdapter to populate a listView, this is my xml file:
<LinearLayout
android:id="#+id/llHoursD"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:descendantFocusability="blocksDescendants"
android:visibility="visible"
android:weightSum="1">
<TextView
android:id="#+id/tvDay"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:layout_toRightOf="#+id/ivName"
android:background="#null"
android:enabled="false"
android:gravity="center_horizontal"
android:inputType="textPersonName"
android:text="Fecha Seleccionada"
android:textColor="#color/category"
android:textColorHint="#color/category"
android:visibility="visible"
android:textSize="17sp" />
<ImageView
android:layout_width="match_parent"
android:layout_height="2dp"
android:layout_marginTop="10dp"
android:scaleType="centerCrop"
android:src="#drawable/separator" />
<ListView
android:id="#+id/lvReservationTime"
android:layout_width="match_parent"
android:layout_height="163dp"
android:divider="#null"
android:dividerHeight="8dp"
android:layout_marginTop="8dp"
android:visibility="visible"
android:layout_weight="1.99">
</ListView>
</LinearLayout>
This is the layout where the textview that is in the list is located
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/txtItemAva"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
And this is the code in the fragment
listHourAvali = new ArrayList<>();
adapterListHourAvali = new ArrayAdapter<String>(getActivity(),R.layout.detail_list_reservation,R.id.tvAvailiHours,listHourAvali);
mLvReservationTime.setAdapter(adapterListHourAvali);
mLvReservationTime.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getActivity(),"Prueba",Toast.LENGTH_LONG).show();
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
The list is filled in another method, the problem is that pressing an item in the list does not go into setOnItemSelectedListener. What is the problem here?

You have to be careful, selecting something is a different action than clicking something.
see: OnItemSelectedListener vs OnItemClickedListener
If you want to do some action when a list item is clicked (!= selected) then you should use the onClickListener:
mLvReservationTime.setOnItemClickListener(new OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> adapter, View v, int position,
long arg3)
{
// do what you intend to do on click of listview row
Toast.makeText(getActivity(),"Prueba", Toast.LENGTH_LONG).show();
}
});

Add a GridView created programmatically in a RelativeLayout

I am trying to insert a GridView I created in Java in a RelativeLayout alredy created in xml.
The error I receive is "java.lang.UnsupportedOperationException: addView(View) is not supported in AdapterView" and it crashes my application every time it gets to the addView function.
I have try creating a LinearLayout insted of the Relative one and still the same error.
Here is the code:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main3"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.work.app2.Main3Activity">
<Button
android:text="Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:id="#+id/buttonDel" />
<Button
android:text="Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/button"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/button"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:id="#+id/RL">
</RelativeLayout>
And the Java:
RelativeLayout RelView;
private void addButton() {
RelView = (RelativeLayout) findViewById(R.id.RL);
GridView GV = new GridView(this);
GV.setLayoutParams(new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT
));
GV.setColumnWidth(100);
GV.setNumColumns(GridView.AUTO_FIT);
GV.setStretchMode(GridView.STRETCH_COLUMN_WIDTH);
GV.addView(RelView);//<-----Problem here
GridAdapter adapter = new GridAdapter(Main3Activity.this,IconsL,Icons2L,nstring);
RelatLayout.setAdapter(adapter);
RelatLayout.setOnItemClickListener(new AdapterView.OnItemClickListener(){
#Override
public void onItemClick(AdapterView<?> parent, android.view.View view, int position, long id) {
showMessage("ss", "click"+position);
}
});
}

You are adding the relative layout to the grid view. Try doing the opposite RelView.addView(GV)

Android: How to display more views after clicking a button

SOLVED THE CODE BELOW WORKS
If I have a layout similar to the one below:
Those five temp EditTexts represent some info the user can enter (like the price of an item, the order number, etc.) If the user wants to add another item they would click on the Add button and I want another 5 textviews to appear on the screen right above the two buttons but right below the previous set of the 5 EditTexts. Can someone give me a starting point on how I would do this.
My layout of the fragment goes like this:
I have a top level linear layout (Vertical Orientation).
Then a scrollview.
Inside the scrollview I have another linear layout.
In that linear layout I have those five EditText objects and the two buttons
The view above is a fragment (defined in the file below) which I pass to my FragmentAdapter in my MainActivity file:
public class Device extends Fragment {
ScrollView scrollView;
LinearLayout ll;
#Override
public View onCreateView(final LayoutInflater inflater, final ViewGroup container,
Bundle savedInstanceState) {
final View rootView = inflater.inflate(R.layout.device_view, container, false);
scrollView = (ScrollView) rootView.findViewById(R.id.device_scroll_view);
ll = (LinearLayout) rootView.findViewById(R.id.layout_in_scrollview);
Button addButton = (Button) rootView.findViewById(R.id.add_another_device_button);
addButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
View temp = inflater.inflate(R.layout.edit_text_view_objects, container, false);
ll.addView(temp);
}
});
return rootView;
}
}
Here is my layout file for this fragment:
<LinearLayout 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"
android:id="#+id/device_fragment_linear_layout"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="DeviceFragment"
android:orientation="vertical">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/device_scroll_view">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center_horizontal">
</LinearLayout>
</ScrollView>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="40dp">
<Button
android:id="#+id/submit_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:text="Submit" />
<Button
android:id="#+id/add_another_device_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add"
android:layout_alignParentRight="true"/>
</RelativeLayout>
</LinearLayout>
edit_text_view_objects.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Name of Master Device"
android:gravity="center"
android:textSize="15dp"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Device Name"
android:gravity="center"
android:textSize="15dp"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Max SMS per day"
android:gravity="center"
android:textSize="15dp"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:textSize="15dp"
android:hint="Carrier Name"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="15dp"
android:gravity="center"
android:layout_gravity="center"
android:hint="OS Version"
android:layout_marginTop="10dp"/>
</LinearLayout>

in your XML take
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/device_scroll_view">
<LinearLayout
android:id="#+id/layoutDynamic"a
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center_horizontal">
</LinearLayout>
</ScrollView>
and create one more XML for your Item and design accordingly (It will add dynamically when you click on ADD)
dynamic_item.xml
<LinearLayout 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"
android:id="#+id/device_fragment_linear_layout"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="DeviceFragment"
android:orientation="vertical">
<TextView
android:id="#+id/etDynamic"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="15dp"
android:gravity="center"
android:layout_gravity="center"
android:hint="Color"
android:layout_marginTop="10dp"/>
</LinearLayout>
so come to java Code
// take the reference of LinearLayout
linearLayout = (LinearLayout) romptView.findViewById(R.id.layoutDynamic);
// Take the reference of Add button
Button addButton = (Button) rootView.findViewById(R.id.add_another_device_button);
addButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
final View addView = layoutInflater1.inflate(R.layout.dynamic_row, null);
final TextView textView1 = (TextView) addView.findViewById(R.id.etDynamic);
textView1.setText(otheret.getText().toString().trim()); otheret.setText(""); linearLayout.addView(addView);
}
});
#and if you want to remove particular item
removeIcon.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
addView.getParent()).removeView(addView);
}
});

You can add these EditText through code at runtime

we can solve this, using List/Recycler view efficiently/easily
when ever you clicking on ADD add the item to list and notify the Recycler view adapter
and and removing also easy you just delete the item from list based on recycler View position.
No need to create Dynamic View here recycler view will do the job
// In Main Layout
<android.support.v7.widget.RecyclerView
android:id="#+id/recycleView_Stops"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/layoutSaveBottom"
android:layout_below="#+id/ll1"
android:layout_marginTop="#dimen/pad_10dp"
app:layout_behavior="#string/bottom_sheet_behavior" />
<TextView
android:id="#+id/tvAddOther"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:gravity="center"
android:text="#string/icon_plus"
android:textColor="#color/colorPrimary"
android:textSize="40sp"
app:customFontPath="#string/roboto_regular" />
// design your layout item
---------------------
and when clicking on Add set user entered details
addOther.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
RouteElements routeElements = new RouteElements();
routeElements.setLatitude(latitude);
routeElements.setLongitude(longitude);
routeElements.setStopName(otheret.getText().toString().trim());
routeElementsArrayList.add(routeElements);
routeStopsAdapter.notifyDataSetChanged();
});
And in Your Adapter for removing the item
public void remove(int position) {
if (position < routeElementsArrayList.size()) {
routeElementsArrayList.remove(position);
notifyDataSetChanged();
}
}