Develop Reference

Unable to communicate with an element of my view with a layout, Kotlin

I am hoping that someone could please help me. I am creating an application using Kotlin. Mostly so far, so good, but I am having issues with one area.
The issue is with that 'distance.amountPicker.value' does not seem to be communicating with the layout. All of the other areas are working just fine i.e hikeName.text.toString(), etc, but I cannot get amountPicker to work.
I am not sure if the issue is with the import 'import kotlinx.android.synthetic.main.activity_hike.view.', as these seems to be a different import than the rest, which use 'import kotlinx.android.synthetic.main.activity_hike.'
If anyone could please guide me in the right direction, I'd really appreciate it.
Many thanks
Here is my code:
View:
package org.wit.hikingtrails.views.hike
import android.content.Intent
import android.os.Bundle
import android.view.Menu
import android.view.MenuItem
import kotlinx.android.synthetic.main.activity_hike.*
import kotlinx.android.synthetic.main.activity_hike.view.*
import org.wit.hikingtrails.R
import org.wit.hikingtrails.models.HikeModel
import org.wit.hikingtrails.views.BaseView
import readImageFromPath
class HikeView : BaseView()
{
lateinit var presenter: HikePresenter
var hike = HikeModel()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_hike)
progressBar.max = 1000
amountPicker.minValue = 1
amountPicker.maxValue = 1000
init(toolbarAdd)
presenter = initPresenter (HikePresenter(this)) as HikePresenter
btnAdd.setOnClickListener{
presenter.doAddOrSave(
hikeName.text.toString(),
description.text.toString(),
if(difficultyLevel.checkedRadioButtonId == R.id.Intermediate)
"Intermediate" else "Hard",
**distance.amountPicker.value**
) }
btnDelete.setOnClickListener { presenter.doAddOrSave(hikeName.text.toString(), description.text.toString(), difficulty.text.toString(), distance.text.length) }
chooseImage.setOnClickListener { presenter.doSelectImage() }
hikeLocation.setOnClickListener { presenter.doSetLocation() }
btnDelete.setOnClickListener { presenter.doDelete() }
}
override fun showHike(hike: HikeModel) {
hikeName.setText(hike.name)
description.setText(hike.description)
distance.setText("Distance - "+hike.distance+"km")
difficulty.setText("Difficulty Level - "+hike.difficultyLevel)
hikeImage.setImageBitmap(readImageFromPath(this, hike.image.toString()))
if (hike.image != null) {
chooseImage.setText(R.string.change_hike_image)
}
btnAdd.setText(R.string.save_hike)
}
override fun onCreateOptionsMenu(menu: Menu): Boolean {
menuInflater.inflate(R.menu.menu_hike, menu)
return super.onCreateOptionsMenu(menu)
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
when (item?.itemId) {
if (hikeName.text.toString().isEmpty()) {
R.id.item_cancel -> {
presenter.doCancel()
}
}
return super.onOptionsItemSelected(item)
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (data != null) {
presenter.doActivityResult(requestCode, resultCode, data)
}
}
override fun onBackPressed() {
presenter.doCancel()
}
}
Layout
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="org.wit.hikingtrails.views.hike.HikeView">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toTopOf="parent">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorAccent"
android:fitsSystemWindows="true"
app:elevation="0dip"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbarAdd"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:titleTextColor="#color/colorPrimary" />
</com.google.android.material.appbar.AppBarLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/appBarLayout"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<EditText
android:id="#+id/hikeName"
android:layout_width="match_parent"
android:layout_height="45dp"
android:layout_margin="8dp"
android:autofillHints=""
android:hint="#string/hint_hikeName"
android:inputType="text"
android:maxLength="25"
android:maxLines="1"
android:padding="8dp"
android:textColor="#color/colorPrimaryDark"
android:textSize="14sp" />
<EditText
android:id="#+id/description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:hint="#string/hint_hikeDescription"
android:inputType="text"
android:maxLength="25"
android:maxLines="1"
android:padding="8dp"
android:textColor="#color/colorPrimaryDark"
android:textSize="14sp" />
<Button
android:id="#+id/chooseImage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:background="#color/colorAccent"
android:paddingTop="8dp"
android:paddingBottom="8dp"
android:text="#string/button_addImage"
android:textColor="#color/colorPrimary"
android:textSize="16sp" />
<ImageView
android:id="#+id/hikeImage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:srcCompat="#mipmap/ic_launcher" />
<Button
android:id="#+id/hikeLocation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:background="#color/colorAccent"
android:paddingTop="8dp"
android:paddingBottom="8dp"
android:stateListAnimator="#null"
android:text="#string/button_location"
android:textColor="#color/colorPrimary"
android:textSize="16sp" />
<TextView
android:id="#+id/hikeSubtitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/donateTitle"
android:layout_alignEnd="#+id/donateTitle"
android:layout_alignParentStart="true"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="#string/hikeSubtitle"
android:textAppearance="?android:attr/textAppearanceMedium" />
<RadioGroup
android:id="#+id/difficultyLevel"
android:layout_width="328dp"
android:layout_height="wrap_content"
android:layout_above="#+id/progressBar"
android:layout_alignParentStart="true"
android:orientation="horizontal">
<RadioButton
android:id="#+id/Hard"
android:layout_width="138dp"
android:layout_height="wrap_content"
android:checked="true"
android:text="#string/hard" />
<RadioButton
android:id="#+id/Intermediate"
android:layout_width="168dp"
android:layout_height="wrap_content"
android:checked="false"
android:text="#string/intermediate" />
</RadioGroup>
<NumberPicker
android:id="#+id/amountPicker"
android:layout_width="wrap_content"
android:layout_height="121dp"
android:layout_alignEnd="#+id/donateSubtitle"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp" />
<ProgressBar
android:id="#+id/progressBar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="349dp"
android:layout_height="14dp"
android:layout_above="#+id/donateButton"
android:layout_alignEnd="#+id/donateSubtitle"
android:layout_alignParentStart="true"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:indeterminate="false"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.526"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.7" />
<TextView
android:id="#+id/distance"
android:layout_width="267dp"
android:layout_height="38dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="#string/distance" />
<TextView
android:id="#+id/difficulty"
android:layout_width="265dp"
android:layout_height="38dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="#string/difficulty" />
<Button
android:id="#+id/btnAdd"
android:layout_width="375dp"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:background="#color/colorAccent"
android:paddingTop="8dp"
android:paddingBottom="8dp"
android:stateListAnimator="#null"
android:text="#string/button_addHike"
android:textColor="#color/colorPrimary"
android:textSize="16sp" />
<Button
android:id="#+id/btnDelete"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:background="#color/red"
android:paddingTop="8dp"
android:paddingBottom="8dp"
android:stateListAnimator="#null"
android:text="#string/button_deleteHike"
android:textColor="#color/colorPrimary"
android:textSize="16sp" />
</LinearLayout>
</ScrollView>
</RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

Add and Remove Views in Android Dynamically in Kotlin

I modified my code by referring to the "https://www.tutorialspoint.com/add-and-remove-views-in-android-dynamically-in-kotlin". There was no error in my code, but the view added when running in the app was not visible. I have no idea what the problem is. Please help me!!
Activity to which the view is added
package com.akj.callback
import android.content.Context
import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.widget.*
import com.akj.callback.databinding.ActivitySearchSubject2Binding
import kotlinx.android.synthetic.main.activity_main.*
import kotlinx.android.synthetic.main.activity_search_subject_2.*
import kotlinx.android.synthetic.main.activity_search_subject_2.to_go_check
import kotlinx.android.synthetic.main.choiced_subject_list.*
import java.util.*
class search_subject_2 : AppCompatActivity() {
lateinit var binding3:ActivitySearchSubject2Binding
private var parentLinearLayout: LinearLayout? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_search_subject_2)
parentLinearLayout = findViewById(R.id.parent_linear_layout)
binding3= ActivitySearchSubject2Binding.inflate(layoutInflater)
setContentView(binding3.root)
userList3.onItemClickListener= AdapterView.OnItemClickListener{
parent, view, position, id ->
//parent?.getItemAtPosition(position).toString()
onAddField()
}
val user = arrayOf("abc", "bcd", "cde", "def", "efg")
val userAdapter: ArrayAdapter<String> = ArrayAdapter(
this,android.R.layout.simple_list_item_1,user)
to_go_check.setOnClickListener {
val intent6=Intent(this#search_subject_2,checkthesetting::class.java)
startActivity(intent6)
}
binding3.searchView3.setOnQueryTextListener(object :androidx.appcompat.widget.SearchView.OnQueryTextListener{
override fun onQueryTextSubmit(query: String?): Boolean {
binding3.searchView3.clearFocus()
if(user.contains(query)){
userAdapter.filter.filter(query)
}
return false
}
override fun onQueryTextChange(newText: String?): Boolean {
if(newText==""){
}
else{
binding3.userList3.adapter=userAdapter
userAdapter.filter.filter(newText)
}
return false
}
})
}
fun onDelete(view: View) {
parentLinearLayout!!.removeView(view.parent as View)
}
fun onAddField() {
val inflater =
getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
val rowView: View = inflater.inflate(R.layout.choiced_subject_list, null)
parentLinearLayout!!.addView(rowView, parentLinearLayout!!.childCount - 1)
Toast.makeText(applicationContext,"fdsvkgjh", Toast.LENGTH_SHORT).show()
}
}
choiced_subject_list.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="50dp"
android:orientation="horizontal">
<TextView
android:id="#+id/number_edit_text"
android:text="title_fdskhdsffsd"
android:textColor="#color/black"
android:textSize="30dp"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="5"
android:inputType="phone"
/>
<Button
android:id="#+id/delete_button"
android:layout_width="0dp"
android:layout_height="40dp"
android:layout_weight="1"
android:background="#android:drawable/ic_delete"
android:onClick="onDelete" />
</LinearLayout>
activity_search_subject_2.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".search_subject_2">
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.04" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.94" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.03" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.97" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.06" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.11" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.87" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.5" />
<androidx.appcompat.widget.SearchView
android:id="#+id/searchView3"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#drawable/coner_search_bar"
android:theme="#style/AppSearchView"
app:layout_constraintBottom_toTopOf="#id/guideline6"
app:layout_constraintEnd_toEndOf="#id/guideline4"
app:layout_constraintStart_toStartOf="#id/guideline3"
app:layout_constraintTop_toBottomOf="#id/guideline5"
app:queryHint="강좌 검색"
app:iconifiedByDefault="false"
/>
<androidx.appcompat.widget.AppCompatButton
android:id="#+id/to_go_check"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:layout_constraintStart_toEndOf="#id/guideline3"
app:layout_constraintEnd_toStartOf="#id/guideline4"
app:layout_constraintTop_toBottomOf="#id/guideline1"
app:layout_constraintBottom_toTopOf="#id/guideline2"
app:layout_constraintVertical_bias="0.98"
android:text="확인"
android:textColor="#FFF"
android:textSize="20dp"
android:background="#drawable/coner_search_bar"
android:stateListAnimator="#null"
/>
<HorizontalScrollView
android:id="#+id/scrollView"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:scrollbars="none"
app:layout_constraintBottom_toTopOf="#+id/to_go_check"
app:layout_constraintEnd_toStartOf="#id/guideline4"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toEndOf="#id/guideline3"
>
<LinearLayout
android:id="#+id/linear_button"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="horizontal"
>
<androidx.appcompat.widget.AppCompatButton
android:id="#+id/njklsfd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:background="#drawable/search_subject_bar"
android:stateListAnimator="#null"
android:text="전공검색" />
<androidx.appcompat.widget.AppCompatButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:background="#drawable/search_subject_bar"
android:stateListAnimator="#null"
android:text="교양검색" />
<androidx.appcompat.widget.AppCompatButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:background="#drawable/search_subject_bar"
android:stateListAnimator="#null"
android:text="교수검색" />
<androidx.appcompat.widget.AppCompatButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:background="#drawable/search_subject_bar"
android:stateListAnimator="#null"
android:text="정렬" />
<androidx.appcompat.widget.AppCompatButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:background="#drawable/search_subject_bar"
android:stateListAnimator="#null"
android:text="학점:3" />
<androidx.appcompat.widget.AppCompatButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:background="#drawable/search_subject_bar"
android:stateListAnimator="#null"
android:text="학점:2" />
<androidx.appcompat.widget.AppCompatButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:background="#drawable/search_subject_bar"
android:text="학점:1"
/>
</LinearLayout>
</HorizontalScrollView>
<ListView
android:id="#+id/userList3"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="#+id/guideline8"
app:layout_constraintEnd_toStartOf="#+id/guideline4"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="#id/guideline3"
app:layout_constraintTop_toTopOf="#+id/guideline6"
app:layout_constraintVertical_bias="0.0" />
<LinearLayout
android:orientation="vertical"
android:id="#+id/parent_linear_layout"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="7dp"
android:layout_marginBottom="7dp"
app:layout_constraintBottom_toTopOf="#id/scrollView"
app:layout_constraintEnd_toStartOf="#+id/guideline4"
app:layout_constraintStart_toEndOf="#id/guideline3"
app:layout_constraintTop_toBottomOf="#id/guideline8" />
</androidx.constraintlayout.widget.ConstraintLayout>

Try this:
val inflater = getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
val rowView: View = inflater.inflate(R.layout.row_child_view, null, false)
Mainview.removeView(rowView)

Recyclerview items not covering entire screen

I am struggling with a bug for a couple of days. For some reason, my recycler view items don't cover the entire screen.
Here is the code :
feed_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<data>
<variable
name="viewModel"
type="com.example.bookally.ui.posts.feed.FeedViewModel" />
</data>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.appcompat.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorWhite"
android:minHeight="?attr/actionBarSize"
android:theme="?attr/actionBarTheme">
<TextView
style="#style/MainHeading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="#string/feed"
android:textSize="20sp" />
</androidx.appcompat.widget.Toolbar>
</com.google.android.material.appbar.AppBarLayout>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/feeds_list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="#android:color/white"
android:clipToPadding="false"
android:paddingLeft="16dp"
android:paddingTop="28dp"
android:paddingRight="16dp"
android:paddingBottom="28dp"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/toolbar"
tools:listitem="#layout/item_feed" />
<ProgressBar
android:id="#+id/progress_bar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/floatingActionButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
android:src="#drawable/ic_baseline_add_24"
android:onClick="#{() -> viewModel.addPosts()}"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:contentDescription="#string/create_post" />
</androidx.constraintlayout.widget.ConstraintLayout>
</layout>
item_feed.xml
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<data>
<variable
name="post"
type="com.example.bookally.firebase.PostContent" />
</data>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:background="#drawable/post_border">
<ImageView
android:id="#+id/author_profile_picture"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="16dp"
android:contentDescription="#string/user_image"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:setProfilePhoto="#{post.authorImageUrl}" />
<TextView
android:id="#+id/author_name"
style="#style/MainHeading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="16dp"
android:text="#{post.author}"
android:textSize="18sp"
app:layout_constraintStart_toEndOf="#+id/author_profile_picture"
app:layout_constraintTop_toTopOf="parent"
tools:text="Iqbal Singh" />
<TextView
android:id="#+id/username"
style="#style/MainHeading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="4dp"
android:text="#{post.username}"
android:textColor="#color/colorGrey"
android:textSize="16sp"
app:layout_constraintStart_toEndOf="#+id/author_profile_picture"
app:layout_constraintTop_toBottomOf="#+id/author_name"
tools:text="\#just_another_boy" />
<TextView
android:id="#+id/post_content"
style="#style/SubHeading"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:gravity="start"
android:text="#{post.content}"
android:textAlignment="viewStart"
android:textSize="20sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/username"
tools:text="Anything random ...." />
<ImageButton
android:id="#+id/like_btn"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="16dp"
android:background="#android:color/transparent"
android:contentDescription="#string/likes"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/post_image"
app:likeIcon="#{post.likedBy}" />
<TextView
android:id="#+id/likes_no"
style="#style/MainHeading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:textSize="16sp"
app:layout_constraintBottom_toBottomOf="#+id/like_btn"
app:layout_constraintStart_toEndOf="#+id/like_btn"
app:layout_constraintTop_toTopOf="#+id/like_btn"
app:likesText="#{post.likes}"
tools:text="7 Likes" />
<TextView
android:id="#+id/comments_no"
style="#style/MainHeading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:textSize="16sp"
app:commentsText="#{post.commentsNumber}"
app:layout_constraintStart_toEndOf="#+id/comment_btn"
app:layout_constraintTop_toTopOf="#+id/comment_btn"
tools:text="0 Comments" />
<ImageButton
android:id="#+id/comment_btn"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="16dp"
android:background="#android:color/transparent"
android:contentDescription="#string/comment"
android:src="#drawable/ic_comment"
app:layout_constraintStart_toEndOf="#+id/likes_no"
app:layout_constraintTop_toBottomOf="#+id/post_image" />
<ImageButton
android:id="#+id/save_post_btn"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
android:background="#android:color/transparent"
android:contentDescription="#string/save_post"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/post_image"
app:saveIcon="#{post.savedBy}" />
<ImageButton
android:id="#+id/add_friend_btn"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:background="#android:color/transparent"
android:contentDescription="#string/add_friend"
android:src="#drawable/ic_add_friend"
app:layout_constraintBottom_toBottomOf="#+id/username"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="#+id/author_name" />
<ImageView
android:id="#+id/post_image"
android:layout_width="0dp"
android:layout_height="200dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
android:contentDescription="#string/post_imageview_content_description"
app:layout_constraintBottom_toTopOf="#+id/comments_no"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/post_content"
app:layout_constraintVertical_bias="0.0"
app:loadImagesFromFirebase="#{post.postImageUrl}" />
</androidx.constraintlayout.widget.ConstraintLayout>
</layout>
FeedAdapter
class FeedAdapter(private val onClickListener: ClickListener) : PagingDataAdapter<Post, FeedAdapter.FeedViewHolder>(
DiffCallback
) {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): FeedViewHolder {
return FeedViewHolder(ItemFeedBinding.inflate(LayoutInflater.from(parent.context)))
}
override fun onBindViewHolder(holder: FeedViewHolder, position: Int) {
val post = getItem(position)
holder.itemView.findViewById<ImageButton>(R.id.like_btn).setOnClickListener { if (post != null) onClickListener.onLikeClicked(post) }
holder.itemView.findViewById<ImageButton>(R.id.comment_btn).setOnClickListener { if (post != null) onClickListener.onCommentClicked(post) }
holder.itemView.findViewById<ImageButton>(R.id.save_post_btn).setOnClickListener { if (post != null) onClickListener.onSavePostClicked(post) }
holder.itemView.findViewById<ImageButton>(R.id.add_friend_btn).setOnClickListener { if (post != null) onClickListener.onAddFriendClicked(post) }
if (post != null) holder.bind(post.postContent)
}
class FeedViewHolder(private val binding : ItemFeedBinding) : RecyclerView.ViewHolder(binding.root) {
fun bind(feed: PostContent) {
binding.post = feed
binding.executePendingBindings()
}
}
In the design tab, everything looks fine :
However, the problem arises in real devices :
However, if I add a view like this, the items cover the entire screen :
<View
android:layout_width="match_parent"
android:layout_height="2dp"
android:background="#android:color/transparent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/like_btn" />
Any help would be really appreciated. Thanks in advance !!

I believe the problem is here:
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): FeedViewHolder {
return FeedViewHolder(ItemFeedBinding.inflate(LayoutInflater.from(parent.context)))
}
Because you are calling the overload of inflate() that does not specify a parent view, your item view's layout params are being ignored. Change it to this instead:
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): FeedViewHolder {
return FeedViewHolder(ItemFeedBinding.inflate(LayoutInflater.from(parent.context), parent, false))
}

you problem is
android:layout_height="wrap_content"
<TextView
android:id="#+id/post_content"
style="#style/SubHeading"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:gravity="start"
android:text="#{post.content}"
android:textAlignment="viewStart"
android:textSize="20sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/username"
tools:text="Anything random ...." />
you must set fixedHeight or use maxLines and set width to match_parent
also remove this line android:textAlignment="viewStart"

All RecyclerView items are not visible when using RecyclerView in ConstraintLayout

I am using ConstraintLayout as a parent and put recyclerview in it to populate the list. Suppose I have to give item count 5 to populate the list and run the code then the list is showing perfectly but the last item of the recyclerview is showing half and not fully visible, and scroll stops at there. I found a solution for this is if am giving height match_parent to the recyclerview then it works fine but then all other view is hidden behind the recyclerview.
If I use another parent view like LinearLayout or RelativeLayout, then recyclerview with height wrap_content works fine and all the list item are fully visible.
I have tried by 2 ways that work for me but I found that wrong programming practice
I give height match_parent to recyclerview and give top_margin to the recylerview so all the other UI item show.
I give padding_bottom to the recyclerview until all the list item position visible
My XML file "activity_per_day_sale.xml" is below.
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/black">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:popupTheme="#style/AppTheme.PopupOverlay">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical">
<ImageView
android:layout_width="40dp"
android:layout_height="40dp"
android:id="#+id/btn_back"
android:padding="5dp"
android:onClick="OnClickPerDaySale"
android:background="?attr/selectableItemBackground"
android:src="#drawable/icon_back_white"
/>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Signup"
android:layout_centerInParent="true"
android:id="#+id/home_title_text"
android:textColor="#color/black"
android:visibility="gone"
android:fontFamily="#font/seguisb"
android:textSize="18sp"/>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="SKIP"
android:padding="10dp"
android:layout_centerVertical="true"
android:visibility="gone"
android:id="#+id/skip"
android:textColor="#color/black"
android:fontFamily="#font/seguisb"
android:textSize="18sp"/>
</RelativeLayout>
</android.support.v7.widget.Toolbar>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="25sp"
android:layout_marginTop="10dp"
android:text="Per Day Sale Details"
android:textColor="#color/yellow_app_logo_color"
android:fontFamily="#font/segoeuib"
app:layout_constraintTop_toBottomOf="#+id/toolbar"
app:layout_constraintStart_toStartOf="parent"
android:id="#+id/TV_signupScreenText"
android:layout_marginLeft="45dp"/>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/rv_perday_sale"
android:layout_marginTop="10dp"
android:layout_marginHorizontal="10dp"
app:layout_constraintTop_toBottomOf="#+id/TV_signupScreenText"/>
</android.support.constraint.ConstraintLayout>
Activity class is "PerDaySaleActivity.kt"
import android.content.Context
import android.content.Intent
import android.os.Bundle
import android.support.v7.widget.StaggeredGridLayoutManager
import android.view.View
import com.nq.NQManager.R
import com.nq.NQManager.utils.BaseActivity
import kotlinx.android.synthetic.main.activity_per_day_sale.*
class PerDaySaleActivity:BaseActivity(){
var adapterPerdaySale : AdapterPerdaySale? = null
companion object {
fun start(context: Context) {
val starter = Intent(context, PerDaySaleActivity::class.java)
context.startActivity(starter)
}
}
override fun getID(): Int {
return R.layout.activity_per_day_sale
}
override fun iniView(savedInstanceState: Bundle?) {
initViews()
}
fun OnClickPerDaySale(v: View){
when(v){
btn_back->{
finish()
}
}
}
fun initViews() {
adapterPerdaySale = AdapterPerdaySale( this)
rv_perday_sale.layoutManager = StaggeredGridLayoutManager(1, 1)
rv_perday_sale.adapter = adapterPerdaySale
}
private fun setUpRecyclerView() {
runOnUiThread { adapterPerdaySale!!.notifyDataSetChanged() }
}
My Adapter class "AdapterPerdaySale.kt"
mport android.content.Context
import android.support.v7.widget.RecyclerView
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import com.nq.NQManager.R
import kotlinx.android.synthetic.main.adapter_perday_sale.view.*
class AdapterPerdaySale(context: Context):
RecyclerView.Adapter<AdapterPerdaySale.MyViewHOlder>() {
private var ctx:Context?=context
override fun onCreateViewHolder(p0: ViewGroup, p1: Int): MyViewHOlder {
return MyViewHOlder(LayoutInflater.from(ctx).inflate(R.layout.adapter_perday_sale, p0, false))
}
override fun getItemCount(): Int {
return 5
}
override fun onBindViewHolder(holder: MyViewHOlder, position: Int) {
if (position==1){
holder.tv_date.text="26 June, 2019"
}else if(position==2){
holder.tv_date.text="27 June, 2019"
}
}
inner class MyViewHOlder(view: View) : RecyclerView.ViewHolder(view) {
val tv_date=view.tv_date
}
}
My Adapter xml file "adapter_perday_sale.xml"
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingVertical="5dp"
android:background="#color/black">
<TextView
android:id="#+id/tv_date"
android:layout_below="#+id/txt_today"
android:layout_centerHorizontal="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#color/white"
android:fontFamily="#font/segoeuib"
android:text="25 June, 2019"
android:textSize="23sp"
android:layout_marginEnd="8dp" app:layout_constraintEnd_toEndOf="parent"
android:layout_marginRight="8dp" android:layout_marginStart="8dp"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginLeft="8dp" android:layout_marginTop="8dp"
app:layout_constraintTop_toTopOf="parent"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/linearLayout1"
android:orientation="horizontal"
app:layout_constraintTop_toBottomOf="#+id/tv_date">
<LinearLayout
android:layout_width="0dp"
android:layout_weight="1"
android:layout_gravity="center"
android:gravity="center"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="25sp"
android:layout_marginTop="5dp"
android:text="Orders"
android:layout_centerHorizontal="true"
android:textColor="#color/white"
android:fontFamily="#font/segoeuib"/>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="50sp"
android:layout_marginTop="0dp"
android:text="50"
android:layout_centerHorizontal="true"
android:textColor="#color/order_history_txt_color"
android:fontFamily="#font/segoeui"/>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_weight="1"
android:gravity="center"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="25sp"
android:layout_marginTop="5dp"
android:text="Revenue"
android:layout_centerHorizontal="true"
android:textColor="#color/white"
android:fontFamily="#font/segoeuib"/>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="50sp"
android:layout_marginTop="0dp"
android:text="£550"
android:layout_centerHorizontal="true"
android:textColor="#color/order_history_txt_color"
android:fontFamily="#font/segoeui"/>
</LinearLayout>
</LinearLayout>
<View android:layout_width="match_parent"
android:layout_height="1.5dp"
android:background="#color/gray"
android:id="#+id/view_1"
app:layout_constraintTop_toBottomOf="#+id/linearLayout1"
android:layout_marginLeft="8dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginStart="8dp"/>
</android.support.constraint.ConstraintLayout>

Add this app:layout_constraintBottom_toBottomOf="parent" property to your recyclerview
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:popupTheme="#style/AppTheme.PopupOverlay">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical">
<ImageView
android:id="#+id/btn_back"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="?attr/selectableItemBackground"
android:onClick="OnClickPerDaySale"
android:padding="5dp"
android:src="#drawable/ic_background" />
<TextView
android:id="#+id/home_title_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Signup"
android:textColor="#000"
android:textSize="18sp"
android:visibility="gone" />
<TextView
android:id="#+id/skip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:padding="10dp"
android:text="SKIP"
android:textColor="#000"
android:textSize="18sp"
android:visibility="gone" />
</RelativeLayout>
</androidx.appcompat.widget.Toolbar>
<TextView
android:id="#+id/TV_signupScreenText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="45dp"
android:layout_marginTop="10dp"
android:text="Per Day Sale Details"
android:textColor="#AD4E4E"
android:textSize="25sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/toolbar" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/rv_perday_sale"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toBottomOf="#+id/TV_signupScreenText" />
</androidx.constraintlayout.widget.ConstraintLayout>

Android gridview in fragment can't scrolling

I have one page called products. When page is loaded it shows productsfragment. This fragment has one RecyclerView which doesn't have any problem. On selecting a product a new fragment opens up and shows the list of product prices fragment. This fragment has one RecyclerView and the scrolling here doesn't works.
I tried gridview and cardview but they too are not scrolling. I tried gridview in scroll view or nested scroll view, they are also not scrolling.
here is my fragment with RecyclerView which is not scrolling
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/sorderfragment_step1_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".Activities.OrderSelect.Fragments.ProductSingleOrder.SOrderFragment_Step1">
<android.support.v7.widget.RecyclerView
android:id="#+id/gvProductPrices"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
and its my RecyclerView item view
<?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:layout_width="200dp"
android:layout_height="200dp"
android:gravity="center"
android:maxHeight="200dp"
android:minHeight="200dp"
android:background="#layout/border2"
android:padding="0dp"
android:orientation="vertical">
<TextView
android:id="#+id/txtPriceName"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="8dp"
android:gravity="center"
android:text="Kucuk Boy Whopper"
android:textSize="30sp"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="#+id/constraintLayout4"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.constraint.ConstraintLayout
android:id="#+id/constraintLayout4"
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="0dp"
android:background="#000000"
app:layout_constraintBottom_toTopOf="#+id/txtPrice"
app:layout_constraintEnd_toEndOf="parent">
</android.support.constraint.ConstraintLayout>
<TextView
android:id="#+id/txtPrice"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="4dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:gravity="center"
android:text="14.99"
android:textColor="#000000"
android:textSize="24sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
</LinearLayout>
and my adapter
class PriceAdapter(val priceList : List<ProductPrice>,
val context: Context) : RecyclerView.Adapter<ViewHolder>() {
override fun onCreateViewHolder(p0: ViewGroup, p1: Int): ViewHolder {
return ViewHolder(LayoutInflater.from(context).inflate(R.layout.gv_product_prices, p0, false))
}
override fun getItemCount(): Int {
return priceList.size
}
override fun onBindViewHolder(p0: ViewHolder, p1: Int) {
val price = priceList[p1]
p0.txtPriceName.text = price.getDescription()
p0.txtPriceName.isAllCaps = true
p0.txtPrice.text = BaseHelper.getNumericStr(price.getPrice())
}
}
class ViewHolder (view: View) : RecyclerView.ViewHolder(view) {
val txtPriceName = view.txtPriceName!!
val txtPrice = view.txtPrice!!
}
and my fragment code
class SOrderFragment_Step1 : Fragment() {
private var _priceRepository = ProductPriceRepository(OrderRepository.orderSelect!!)
private var priceAdapter: PriceAdapter? = null
private var prices: List<ProductPrice>? = null
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?): View? {
return inflater.inflate(R.layout.fragment_sorder_step1, container, false)
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
configurePrices()
}
private fun configurePrices() {
prices = _priceRepository.getPriceByProductId(OrderRepository.currentProduct!!.getId())
gvProductPrices.layoutManager = GridLayoutManager(OrderRepository.orderSelect!!, 2)
gvProductPrices.adapter = PriceAdapter(prices!!, this, OrderRepository.orderSelect!!)
}
fun priceSelect(price: ProductPrice) {
Toast.makeText(OrderRepository.orderSelect!!, price.getDescription(), Toast.LENGTH_LONG).show()
}
}
and also fragment change like this
val manager = this.fragmentManager!!.beginTransaction()
manager.setCustomAnimations(android.R.anim.fade_in, android.R.anim.fade_out)
manager.replace(R.id.fragmentProductSteps, SOrderFragment_Step1(), "detailFragment").commit()
and fragment base activity xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/order_select_layout"
tools:context=".OrderSelect">
<GridView
android:id="#+id/gvProductGroups"
android:layout_width="165dp"
android:layout_height="0dp"
android:layout_marginTop="16dp"
android:scrollbars="none"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/linearLayout" />
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="0dp"
android:layout_height="225dp"
android:orientation="horizontal"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<android.support.constraint.ConstraintLayout
android:layout_width="0dip"
android:layout_height="match_parent"
android:layout_weight="7">
<include
layout="#layout/activity_advertise_partition"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/orderProductLayout"
android:layout_width="0dp"
android:layout_height="83dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:background="#layout/gv_order_products_border"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/btnCancelCurrentOrder2"
app:layout_constraintStart_toEndOf="#+id/gvProductGroups">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="20dp"
android:layout_marginTop="5dp"
android:id="#+id/paymentView"
android:layout_marginRight="5dp"
android:layout_marginBottom="5dp"
android:layout_weight="1">
<TextView
android:id="#+id/txtTotalL"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="TOPLAM :"
android:textColor="#bc3030"
android:textSize="24sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/txtPriceL"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="-1dp"
android:layout_weight="1"
android:gravity="left|center"
android:text="₺ 0.00"
android:textColor="#000000"
android:textSize="24sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/imgOrderButton"
app:layout_constraintStart_toEndOf="#+id/txtTotalL"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
<Button
android:id="#+id/imgOrderButton"
android:layout_width="175dp"
android:layout_height="0dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="8dp"
android:background="#15912e"
android:padding="15sp"
android:text="Sepeti Goster"
android:textColor="#FFFFFF"
android:textSize="18sp"
android:textStyle="bold"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
</LinearLayout>
<fragment
android:id="#+id/fragmentProductSteps"
android:name="com.example.alknakralar.kios.Helpers.BlankFragment"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginStart="24dp"
android:layout_marginLeft="24dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="24dp"
android:layout_marginRight="24dp"
android:layout_marginBottom="8dp"
app:layout_constraintBottom_toTopOf="#+id/orderProductLayout"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/gvProductGroups"
app:layout_constraintTop_toBottomOf="#+id/linearLayout" />
<Button
android:id="#+id/btnCancelCurrentOrder2"
android:layout_width="125dp"
android:layout_height="0dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="8dp"
android:background="#ff0000"
android:text="SEPETI BOSALT"
android:textColor="#FFFFFF"
android:textSize="24sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/imgBackFromProducts"
app:layout_constraintTop_toBottomOf="#+id/fragmentProductSteps" />
<ImageView
android:id="#+id/imgBackFromProducts"
android:layout_width="70dp"
android:layout_height="0dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/fragmentProductSteps"
app:srcCompat="#drawable/back" />
</android.support.constraint.ConstraintLayout>
How can i fix this issue ?

Sugession: Why are you using grid view and setting adapter to it where you have another approach and commonly used approach.
Which is to use recycler view and set its layout manager as GridLayout manager
Below single line will make your job done
recyclerView.setLayoutManager(new GridLayoutManager(this, numberOfColumns));