I have some text field and a recyclerview in my activity. I need to access textfield values from the recycler view adapter class and access a method in activity from the adapter class. but I couldn't do the same using Kotlin help me to solve this
Activity
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_addstaff)
try {
sprefs = this!!.getSharedPreferences(
Config.PACKAGE_NAME, Context.MODE_PRIVATE)
token = sprefs!!.getString("token", "No")!!
} catch (e: Exception) {
}
try {
layoutManager = LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false)
outletnameslistrecycle!!.layoutManager = layoutManager
Outnameslist = ArrayList()
adapter = outletname_adapter(Outnameslist as ArrayList<Outletnamelist>, this,btneditstaff as Button)
outletnameslistrecycle!!.adapter = adapter
getoutletlist();
} catch (e: Exception) {
e.printStackTrace()
}
}
Adapterclass
class outletname_adapter(internal var Outnamelist: List<Outletnamelist>, private val context: Context, val button: Button) : RecyclerView.Adapter<outletname_adapter.ViewHolder>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
try {
val v = LayoutInflater.from(parent.context)
.inflate(R.layout.lay_outletnamelist, parent, false)
return ViewHolder(v, context, Outnamelist)
} catch (e: Exception) {
e.printStackTrace()
}
return null!!
}
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
try {
button.setOnClickListener {
}
var OutletList =Outnamelist[position]
holder.outlet_name!!.text=OutletList.name
} catch (e: Exception) {
e.printStackTrace()
}
}
override fun getItemCount(): Int {
return Outnamelist.size
}
inner class ViewHolder(v: View, var context: Context, private val outnamelist: List<Outletnamelist>)
: RecyclerView.ViewHolder(v), View.OnClickListener {
var outlet_checkbox: CheckBox? = null
var outlet_name: TextView?=null
var layTop: LinearLayout?= null
init {
itemView.setOnClickListener(this)
try {
outlet_checkbox=v.findViewById<View>(R.id.checkBox) as CheckBox
outlet_name=v.findViewById<View>(R.id.txt_in)as TextView
} catch (e: Exception) {
e.printStackTrace()
}
}
override fun onClick(v: View) {
val position = adapterPosition
}
}
}
XML`
<ScrollView 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"
xmlns:android="http://schemas.android.com/apk/res/android">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/diagonal_bg"
tools:context=".Activity_addstaff">
<de.hdodenhof.circleimageview.CircleImageView xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/img_staff"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginStart="30dp"
android:layout_marginTop="137dp"
android:src="#drawable/subadmin"
app:civ_border_color="#ffffff"
app:civ_border_width="2dp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingLeft="1dp"
android:paddingRight="1dp"
android:layout_marginTop="250dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:animateLayoutChanges="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:animateLayoutChanges="true">
<android.support.design.widget.TextInputLayout
android:id="#+id/staffname_text_input"
style="#style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TextInputEditText
android:id="#+id/staffname_edit_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/label_staffname" />
</android.support.design.widget.TextInputLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:animateLayoutChanges="true">
<android.support.design.widget.TextInputLayout
android:id="#+id/staffaddress_text_input"
style="#style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TextInputEditText
android:id="#+id/staffaddress_edit_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/label_address" />
</android.support.design.widget.TextInputLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:animateLayoutChanges="true">
<android.support.design.widget.TextInputLayout
android:id="#+id/staffplace_text_input"
style="#style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TextInputEditText
android:id="#+id/staffplace_edit_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/label_place" />
</android.support.design.widget.TextInputLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:animateLayoutChanges="true">
<android.support.design.widget.TextInputLayout
android:id="#+id/staffpin_text_input"
style="#style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TextInputEditText
android:id="#+id/staffpin_edit_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/label_pin" />
</android.support.design.widget.TextInputLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:animateLayoutChanges="true">
<android.support.design.widget.TextInputLayout
android:id="#+id/staffmob_text_input"
style="#style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TextInputEditText
android:id="#+id/staffmob_edit_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/label_mob"
/>
</android.support.design.widget.TextInputLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/lay_root"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp">
<LinearLayout
android:id="#+id/lay_root2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="#+id/outletnameslistrecycle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="1dp" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginTop="10dp"
android:orientation="horizontal"
android:padding="20dp">
<Button
android:id="#+id/btneditstaff"
android:layout_width="wrap_content"
android:layout_height="35dp"
android:layout_gravity="center"
android:layout_marginEnd="5dp"
style="#style/DefaultButton"
android:background="#drawable/btn_border"
android:foreground="?attr/selectableItemBackground"
android:text="Save"
android:textAllCaps="false"
android:textColor="#color/white" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
From the activity, I have passed my button reference to adapter class but the same way I am getting an error when trying to pass textfield references.
you can access the activity method or others on this way in adapter:
if(context is XXXActivity){
context.xxx()
context.xx
}
but this isn't the good code.you can try like this 2 methods:
you can define and set a Listener to adapter to post the event(such as click?) to activity,
make the activity deal with it initiative(activity can get the data from itself and adapter)。
if not an event make the adapter need the data from activity.you can provide the data from activity with interface like this.
class outletname_adapter(internal var Outnamelist: List<Outletnamelist>, private val context: Context, val button: Button , val xxxtextProvider:()->String={""}/*it return the data you need*/ ) : RecyclerView.Adapter<outletname_adapter.ViewHolder>() {
...
}
Related
I have Recyclerview multiple view types and have Recyclerview in Recyclerview when scroll lag first time I do not know why scroll lag first time
here my layout fragment
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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:id="#+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".presentation.LottoFragment">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/teal_700"
android:padding="20dp">
<LinearLayout
android:id="#+id/searchLinearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/menuTextInputLayout"
style="#style/Widget.MaterialComponents.TextInputLayout.FilledBox.ExposedDropdownMenu"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/label">
<AutoCompleteTextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="none" />
</com.google.android.material.textfield.TextInputLayout>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
<LinearLayout
android:id="#+id/contentLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
app:behavior_peekHeight="56dp"
app:layout_behavior="com.google.android.material.bottomsheet.BottomSheetBehavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/ic_list_header_background"
android:clickable="true"
android:elevation="4dp"
android:orientation="horizontal"
android:padding="20dp">
<TextView
android:id="#+id/lotto_text_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="#font/kanit_light"
android:text="0 items(s)" />
<ImageView
android:id="#+id/filterIcon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:src="#android:drawable/arrow_up_float"
android:visibility="gone" />
</LinearLayout>
<LinearLayout
android:id="#+id/front_layer_linear_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white"
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/lotto_recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:paddingBottom="64dp"
tools:itemCount="3"
tools:listitem="#layout/item_lotto_prizes_one" />
</LinearLayout>
</LinearLayout>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
here my fragment
lottoRecyclerView.apply {
layoutManager = LinearLayoutManager(context)
adapter = lottoLatestAdapter
}
here my Adapter:
class LottoLatestAdapter : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
companion object {
private const val VIEW_TYPE_LOTTO_PRIZE_ONE = 1
private const val VIEW_TYPE_LOTTO_PRIZE_RUNNING_NUMBER = 2
private const val VIEW_TYPE_LOTTO_PRIZE_ONE_NEAR = 3
private const val VIEW_TYPE_LOTTO_PRIZE_OTHER = 4
}
var latestList: MutableList<LottoPrizesLatestModel> = mutableListOf()
set(value) {
field = value
notifyDataSetChanged()
}
private val viewPool : RecycledViewPool = RecycledViewPool()
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
val inflater = LayoutInflater.from(parent.context)
return when (viewType) {
VIEW_TYPE_LOTTO_PRIZE_ONE -> {
LottoPrizeOneHolder(ItemLottoPrizesOneBinding.inflate(inflater, parent, false))
}
VIEW_TYPE_LOTTO_PRIZE_RUNNING_NUMBER -> {
LottoPrizeRunningNumberHolder(
ItemLottoRunningNumbersBinding.inflate(
inflater,
parent,
false
)
)
}
VIEW_TYPE_LOTTO_PRIZE_ONE_NEAR -> {
LottoPrizeOneNearHolder(
ItemLottoPrizesOneNearBinding.inflate(
inflater,
parent,
false
)
)
}
VIEW_TYPE_LOTTO_PRIZE_OTHER -> {
LottoPrizeOtherListHolder(
ItemLottoPrizesOtherListBinding.inflate(
inflater,
parent,
false
),
LottoLatestPrizeOtherAdapter()
)
}
else -> throw NullPointerException("Not have view Type")
}
}
override fun getItemViewType(position: Int): Int {
return when (latestList[position]) {
is LottoPrizesLatestModel.LottoLatestPrizeOne -> VIEW_TYPE_LOTTO_PRIZE_ONE
is LottoPrizesLatestModel.LottoLatestRunningNumbers -> VIEW_TYPE_LOTTO_PRIZE_RUNNING_NUMBER
is LottoPrizesLatestModel.LottoLatestPrizeFirstNear -> VIEW_TYPE_LOTTO_PRIZE_ONE_NEAR
is LottoPrizesLatestModel.LottoLatestPrizeOther -> VIEW_TYPE_LOTTO_PRIZE_OTHER
}
}
override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
when (holder) {
is LottoPrizeOneHolder -> holder.bind(latestList[position] as LottoPrizesLatestModel.LottoLatestPrizeOne)
is LottoPrizeRunningNumberHolder -> holder.bind(latestList[position] as LottoPrizesLatestModel.LottoLatestRunningNumbers)
is LottoPrizeOneNearHolder -> holder.bind(latestList[position] as LottoPrizesLatestModel.LottoLatestPrizeFirstNear)
is LottoPrizeOtherListHolder -> {
viewPool.putRecycledView(holder)
holder.bind(latestList[position] as LottoPrizesLatestModel.LottoLatestPrizeOther, viewPool)
}
}
}
override fun getItemCount(): Int = latestList.size
}
here my layout holder
<?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="wrap_content"
android:layout_margin="8dp">
<TextView
android:id="#+id/title_prize_other_text_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="#font/kanit_light"
android:gravity="center"
android:textSize="26sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/prize_other_recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipToPadding="false"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/title_prize_other_text_view"
tools:itemCount="10"
tools:listitem="#layout/item_lotto_prizes_other" />
<GridLayout
android:id="#+id/prize_other_grip_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:columnCount="2"
android:orientation="vertical"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/title_prize_other_text_view" />
<TextView
android:id="#+id/text_prize_one_near_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="#font/kanit_light"
android:text="#string/lotto_prize_per_baht"
android:textSize="16sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/prize_other_recycler_view" />
</androidx.constraintlayout.widget.ConstraintLayout>
and here my holder recyclerView in RecyclerView
class LottoPrizeOtherListHolder(
private val binding: ItemLottoPrizesOtherListBinding,
private val lottoLatestPrizeOtherAdapter: LottoLatestPrizeOtherAdapter
) :
RecyclerView.ViewHolder(binding.root) {
fun bind(
lottoLatestPrizeOther: LottoPrizesLatestModel.LottoLatestPrizeOther,
viewPool: RecyclerView.RecycledViewPool
) = with(binding) {
prizeOtherRecyclerView.apply {
layoutManager = GridLayoutManager(
context,
2,
GridLayoutManager.VERTICAL,
false
).apply {
initialPrefetchItemCount = lottoLatestPrizeOther.prizeModel.number.size
}
this.adapter = lottoLatestPrizeOtherAdapter
setRecycledViewPool(viewPool)
}
lottoLatestPrizeOtherAdapter.numberList =
lottoLatestPrizeOther.prizeModel.number.toMutableList()
titlePrizeOtherTextView.text = lottoLatestPrizeOther.prizeModel.name
textPrizeOneNearTextView.text = itemView.context.getString(
R.string.lotto_prize_per_baht,
lottoLatestPrizeOther.prizeModel.reward
)
}
}
my problem is : When i scroll recyclerview for first time it is not smooth and logcat show recyclerview Skipped 51 frames! adapter but when I reach end of recyclerView and scroll to up then scroll down it is very smooth and my recyclerview have TextView Only !!! how can I solve this issue?
this my video App https://youtu.be/Li7aKWmEfXQ
In your fragment add this after applying LayoutManager:
lottoRecyclerView.setDrawingCacheEnabled(true);
lottoRecyclerView.setItemViewCacheSize(myCacheSize);
The main reason Jank occurs the first time because on the first time it is loading the values onto memory dynamically. while once it is down it already has a few elements pre loaded
You can handle it using
mRecyclerView.setHasFixedSize(true);
mRecyclerview.setNestedScrollingEnabled(false);
in your kotlin code
or add android:nestedScrollingEnabled="false" in your RecyclerView xml
You can reach some performance improvements by applying the following:
recyclerView.setHasFixedSize(true);
recyclerView.setDrawingCacheEnabled(true);
..in combination with lite mode of MapsView:
<com.google.android.gms.maps.MapView
android:layout_width="match_parent"
android:layout_height="200dp"
app:liteMode="true"
app:mapType="normal" />
For it was not an option to disable nestedScrollingEnabled as mentioned by #Narendra_Nath, which further improves performance.
My RecyclerView loads in the middle of the list instead of the most top item first. The list should load the topmost item. In this case, it's the "latest" post. Which I have set to the reverse layout to true and that works.
My RecyclerView
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:viewBindingIgnore="true">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/postsList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:padding="5dp"
tools:listitem="#layout/post_item" />
</FrameLayout>
My Post list fragment
// Set up FirebaseRecyclerAdapter with the Query
val postsQuery = database.child(Globals().POSTS_ROOT_PATH)
// This configuration comes from the Paging Support Library
// https://developer.android.com/reference/androidx/paging/PagedList.Config
val config = PagedList.Config.Builder()
.setEnablePlaceholders(false)
.setPrefetchDistance(5)
.setPageSize(10)
.build()
// The options for the adapter combine the paging configuration with query information
// and application-specific options for lifecycle, etc.
val options = DatabasePagingOptions.Builder<Post>()
.setLifecycleOwner(this)
.setQuery(postsQuery, config, Post::class.java)
.build()
adapter = object : FirebaseRecyclerPagingAdapter<Post, PostViewHolder>(options) {
override fun onCreateViewHolder(viewGroup: ViewGroup, i: Int): PostViewHolder {
val inflater = LayoutInflater.from(viewGroup.context)
return PostViewHolder(inflater.inflate(R.layout.post_item, viewGroup, false))
}
override fun onBindViewHolder(viewHolder: PostViewHolder, position: Int, model: Post) {
val postRef = getRef(position)
// Set click listener for the whole post view
val postKey = postRef.key
// Log.d("PostListFragment", "post key id is: " + postKey)
viewHolder.itemView.setOnClickListener {
// Launch PostDetailActivity
val intent = Intent(activity, PostDetailActivity::class.java)
intent.putExtra(PostDetailActivity.EXTRA_POST_KEY, postKey)
startActivity(intent)
}
}
override fun onLoadingStateChanged(state: LoadingState) {
when (state) {
LoadingState.LOADING_INITIAL -> {
Log.d(TAG, "Initial data loading")
}
LoadingState.LOADING_MORE -> {
}
LoadingState.LOADED -> {
}
LoadingState.FINISHED -> {
Log.d(TAG, "All data loaded.")
}
LoadingState.ERROR -> {
Log.d(TAG, "Error occured while loading data")
}
}
}
override fun onError(databaseError: DatabaseError) {
super.onError(databaseError)
databaseError.toException().printStackTrace()
}
}
// Set up Layout Manager, reverse layout
manager = LinearLayoutManager(activity)
manager.reverseLayout = true
manager.stackFromEnd = true
recyclerList.layoutManager = manager
recyclerList.adapter = adapter
}
When I set the setPageSize() to a very large number then it loads the most top item. What do I need to do so this always loads the most top list item first?
Thanks
Edit:
post_item.xml
<?xml version="1.0" encoding="utf-8"?>
<com.google.android.material.card.MaterialCardView 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:layout_margin="5dp"
tools:viewBindingIgnore="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:id="#+id/postTextLayout"
layout="#layout/post_text_include"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="2dp"
android:layout_marginTop="2dp"
android:layout_marginStart="2dp" />
<include
android:id="#+id/postThumbnailImg"
layout="#layout/post_video_thumbnail_include"
android:layout_width="match_parent"
android:layout_height="250dp"
android:layout_alignParentLeft="true"
android:layout_below="#+id/postTextLayout"
android:layout_alignParentStart="true" />
<include
android:id="#+id/postAuthorLayout"
layout="#layout/post_author_thumbnail_include"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/postThumbnailImg"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
</com.google.android.material.card.MaterialCardView>
Sub layouts
<?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:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/postTitle"
style="#style/TextAppearance.AppCompat.Medium"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="1"
android:textStyle="bold"
android:textColor="#color/colorPrimaryDark"
tools:text="My First Post"
android:paddingStart="5dp"
android:paddingEnd="5dp" />
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:viewBindingIgnore="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ImageView
android:id="#+id/videoThumbnailImg"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/main_background" />
/>
<RelativeLayout
android:layout_height="match_parent"
android:layout_width="match_parent">
<ImageView
android:id="#+id/playButton"
android:layout_width="50dp"
android:layout_height="50dp"
android:scaleType="centerCrop"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:src="#drawable/ic_baseline_play_arrow_24" />
</RelativeLayout>
</FrameLayout>
<?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:layout_width="wrap_content"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:gravity="center_vertical"
android:orientation="horizontal">
<androidx.cardview.widget.CardView
android:layout_width="40dp"
android:layout_height="40dp"
app:cardCornerRadius="20dp">
<ImageView
android:id="#+id/postAuthorPhoto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/ic_person_outline_40" />
</androidx.cardview.widget.CardView>
<TextView
android:id="#+id/postAuthor"
style="#style/Base.TextAppearance.AppCompat.Small"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:gravity="center_vertical"
android:textColor="#color/colorPrimaryDark"
tools:text="someauthor#email.com" />
</LinearLayout>
You need to set height wrap_content rather than match_parent for sublayouts.
I have the following layout file -
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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:id="#+id/fragment_marketplace_root_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/fragment_marketplace_appbarlayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:elevation="0dp"
android:fitsSystemWindows="true">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="220dp"
android:fitsSystemWindows="true"
android:minHeight="150dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
app:titleEnabled="false">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_collapseMode="pin"
app:layout_collapseParallaxMultiplier="0">
<com.twoverte.views.ClearableAutoCompleteTextView
android:id="#+id/fragment_marketplace_searchview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="14dp"
android:layout_marginEnd="14dp"
android:completionThreshold="0"
android:hint="#string/fragment_marketplace_search_hint"
android:iconifiedByDefault="false"
android:inputType="text|textAutoCorrect"
android:maxLength="25"
android:textIsSelectable="false"
android:textSelectHandle="#xml/empty_shape"
tools:layout_editor_absoluteX="1dp"
tools:layout_editor_absoluteY="1dp" />
<TextView
android:id="#+id/fragment_marketplace_discover_products_from_myverte_textview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="14dp"
android:layout_marginTop="15dp"
android:fontFamily="#font/noto_sans"
android:text="#string/fragment_marketplace_discover_products_from_myverte"
android:textSize="17sp"
android:visibility="gone"
tools:visibility="visible" />
</LinearLayout>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/fragment_marketplace_vendors_recycler_view"
android:layout_width="wrap_content"
android:layout_height="130dp"
android:layout_gravity="bottom"
android:minHeight="40dp"
android:orientation="horizontal"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="1"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
tools:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
tools:listitem="#layout/fragment_marketplace_vendor_row_item" />
</com.google.android.material.appbar.CollapsingToolbarLayout>
</com.google.android.material.appbar.AppBarLayout>
<androidx.core.widget.NestedScrollView
android:id="#+id/fragment_marketplace_featured_products_nested_scroll_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/fragment_marketplace_featured_products_textview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/very_light_grey"
android:fontFamily="#font/noto_sans"
android:paddingStart="14dp"
android:paddingLeft="14dp"
android:paddingTop="15dp"
android:paddingEnd="14dp"
android:text="#string/fragment_marketplace_featured_products"
android:textSize="17sp"
android:visibility="gone"
tools:visibility="visible" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/fragment_marketplace_products_recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:background="#color/very_light_grey"
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
tools:itemCount="2"
tools:listitem="#layout/fragment_marketplace_products_row_item" />
<View
android:id="#+id/activity_product_page_bottom_view"
android:layout_width="match_parent"
android:layout_height="70dp"
android:layout_marginTop="60dp"
android:background="#color/light_black"
android:visibility="gone"
tools:visibility="visible" />
</LinearLayout>
</androidx.core.widget.NestedScrollView>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
and inside my onViewCreated I have the following code -
import kotlinx.android.synthetic.main.fragment_marketplace.fragment_marketplace_vendors_recycler_view as vendorsList
...
...
// onViewCreated ->
val originalVendorListHeight: Int = vendorsList.layoutParams?.height!!
appBarLayout.addOnOffsetChangedListener(AppBarLayout.OnOffsetChangedListener { appBarLayout, value ->
vendorsList.updateLayoutParams {
this.height = originalVendorListHeight + value
(this as CollapsingToolbarLayout.LayoutParams).setMargins(0, 0, 0, abs(value))
}
})
Which creates an animation of the top horizontal RV of it being expanding with it's height up and down up to a cap which is what I need.
The issue I am facing now is that each ViewHolder inside that RV is not proportional once expanded as I am only changing it's height and not width and I am facing an issue trying to set the width of each individual VH as I can't rely on it's parent size as before with the height.
Here is my adapter and VH -
class VendorAdapter(private val miniVendorModels: List<MiniVendorModel>, private val context: Context) : RecyclerView.Adapter<VendorsHolder>() {
companion object {
const val EXTRA_VENDOR_MODEL = "EVM"
}
private val vendorsHoldersList = mutableListOf<VendorsHolder>()
override fun onCreateViewHolder(viewGroup: ViewGroup, i: Int): VendorsHolder {
val view = LayoutInflater.from(viewGroup.context).inflate(R.layout.fragment_marketplace_vendor_row_item, viewGroup, false)
val vendorsHolder = VendorsHolder(view)
vendorsHoldersList.add(vendorsHolder)
return vendorsHolder
}
override fun onBindViewHolder(vendorsHolder: VendorsHolder, i: Int) {
val model = miniVendorModels[i]
Picasso.get().load(model.bannerPicture).into(vendorsHolder.vendorImageView)
vendorsHolder.vendorImageView.setOnClickListener { v: View? ->
try {
val intent = Intent(context, VendorPageActivity::class.java)
intent.putExtra(EXTRA_VENDOR_MODEL, model)
context.startActivity(intent)
} catch (e: Exception) {
e.printStackTrace()
Toast.makeText(context, ResourceHelper.getString(R.string.marketplace_vendor_unavailable), Toast.LENGTH_SHORT).show()
}
}
}
override fun getItemCount(): Int = miniVendorModels.size
}
class VendorsHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
var vendorImageView: ImageView = itemView.findViewById(R.id.vendors_row_item_imageview)
var rootLayout: ConstraintLayout = itemView.findViewById(R.id.vendors_row_item_root_layout)
var vendorHolderCardview: CardView = itemView.findViewById(R.id.search_image_contact_cardview)
}
<?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:id="#+id/vendors_row_item_root_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.cardview.widget.CardView
android:id="#+id/search_image_contact_cardview"
android:layout_width="152dp"
android:layout_height="match_parent"
android:layout_margin="5dp"
app:cardCornerRadius="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="#+id/vendors_row_item_imageview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
tools:src="#mipmap/ic_launcher" />
</androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>
As you can see, the ViewHolders are Match Parent in height meaning that they will expand with their parents.
I can't use the same trick for the width as it is a horizontal RV, so I will need to use a different method to enable the expanding and reducing all of the RV's VH width.
solved -
override fun onCreateViewHolder(viewGroup: ViewGroup, i: Int): VendorsHolder {
val view = LayoutInflater.from(viewGroup.context).inflate(R.layout.fragment_marketplace_vendor_row_item, viewGroup, false)
val vendorsHolder = VendorsHolder(view)
vendorsHoldersList.add(vendorsHolder)
vendorsHolder.rootLayout.addOnLayoutChangeListener(object : View.OnLayoutChangeListener {
override fun onLayoutChange(v: View?, left: Int, top: Int, right: Int, bottom: Int, oldLeft: Int, oldTop: Int, oldRight: Int, oldBottom: Int) {
vendorsHolder.rootLayout.updateLayoutParams {
this.width = 152 + bottom
}
}
})
return vendorsHolder
}
where 152 is my base width of the viewholder
I have used #bindingAdapter to set Avatar in my layout but when change some value the bindingAdapter is not loading the image. This is my viwmodel
class ProfileViewModel constructor(val repository: ProfileRepository, val mContext: Context, photo: Photo = Photo("")): ViewModel() {
var avatar: ObservableField<String> = ObservableField("")
var responseListener: ResponseListener? = null
var fileUploadEvent: FileEvents? = null
fun getAvatarUrl() : ObservableField<String> {
return avatar
}
companion object {
#BindingAdapter("avatarUrl")
#JvmStatic
fun loadAvatar(imageView: ImageView, avatarUrl: String) {
Glide.with(imageView.context)
.load(avatarUrl)
.placeholder(R.mipmap.profile)
.apply(RequestOptions.circleCropTransform())
.into(imageView)
}
}
fun onProfileImageUpload(uri: Uri) {
fileUploadEvent!!.onUpload()
Coroutines.main {
try {
val imageResponse = repository.updateProfileAvatar(
getImageForUpload(uri, "avatar")
)
avatar.set(imageResponse.data.avatar.thumbnail)
fileUploadEvent!!.onUploadSuccess(avatar.get()!!)
} catch(e : Exception) {
fileUploadEvent!!.onUploadFailure(e.toString())
}
}
}
}
In my XML I defined the namespace like this
<?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">
<data>
<variable
name="viewmodel"
type="com.kreeti.gogal.ui.profile.ProfileViewModel" />
</data>
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:id="#+id/profile_root"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="15dp">
<TextView
android:id="#+id/welcome_header"
style="#style/glacial_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/welcome"
android:textColor="#color/violet"
android:textSize="32sp" />
<LinearLayout
android:id="#+id/profile_header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:baselineAligned="false"
android:orientation="horizontal">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3"
>
<ImageView
android:id="#+id/avatar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:scaleType="center"
android:onClick="#{viewmodel::onAvatarClick}"
app:avatarUrl="#{viewmodel.avatarUrl}" />
<ProgressBar
android:id="#+id/avatar_progress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:visibility="gone" />
</FrameLayout>
</LinearLayout>
</LinearLayout>
</ScrollView>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
</layout>
I am getting photo url from api, I want change the photo when I get the phot through the viewbinding. How can I load the image when I am changing the url? Do I have to make some listener?
I am trying to make a bottom sheet with a recyclerview with cards. I was able to put the the cards within the bottom sheet but I am having problems with the recyclerview. As shown in the photo, it creates multiple bottom sheets with the cards within them. I have tried to fix this but so far have no luck. How can I make it so that the bottom sheet contains the cards with a recyclerview? I believe the problem is the Recyclerview in activity_main but don't know where to place it.
MainActivity.kt
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
if (supportActionBar != null)
supportActionBar?.hide()
val modelList = readFromAsset()
val adapter = CustomAdapter(modelList, this)
rcv.layoutManager = LinearLayoutManager(this, RecyclerView.VERTICAL, false) as RecyclerView.LayoutManager?
rcv.adapter = adapter;
configureBackdrop()
}
private var mBottomSheetBehavior: BottomSheetBehavior<View?>? = null
private fun configureBackdrop() {
// Get the fragment reference
val fragment = supportFragmentManager.findFragmentById(R.id.filter_fragment)
fragment?.let {
// Get the BottomSheetBehavior from the fragment view
BottomSheetBehavior.from(it.view)?.let { bsb ->
mBottomSheetBehavior = bsb
}
}
}
private fun readFromAsset(): List<Model> {
val modeList = mutableListOf<Model>()
val bufferReader = application.assets.open("android_version.json").bufferedReader()
val json_string = bufferReader.use {
it.readText()
}
val jsonArray = JSONArray(json_string);
for (i in 0..jsonArray.length() - 1) {
val jsonObject: JSONObject = jsonArray.getJSONObject(i)
val model = Model(jsonObject.getString("name"), jsonObject.getString("version"))
modeList.add(model)
}
return modeList
}
}
CustomAdapter.kt
class CustomAdapter(val modelList: List<Model>, val context: Context) :
RecyclerView.Adapter<RecyclerView.ViewHolder>() {
override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
(holder as ViewHolder).bind(modelList.get(position));
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
val layoutInflater = LayoutInflater.from(parent.context)
return ViewHolder(layoutInflater.inflate(R.layout.backdrop_fragment, parent, false))
}
override fun getItemCount(): Int {
return modelList.size;
}
lateinit var mClickListener: ClickListener
fun setOnItemClickListener(aClickListener: ClickListener) {
mClickListener = aClickListener
}
interface ClickListener {
fun onClick(pos: Int, aView: View)
}
inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView), View.OnClickListener {
init {
itemView.setOnClickListener(this)
}
override fun onClick(p0: View?) {
mClickListener.onClick(adapterPosition, itemView)
}
fun bind(model: Model): Unit {
itemView.txt.text = model.name
itemView.sub_txt.text = model.version
val id = context.resources.getIdentifier(model.name.toLowerCase(), "drawable", context.packageName)
itemView.img.setBackgroundResource(id)
}
}
}
activity_main
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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">
<TextView
android:id="#+id/textView"
android:text="#string/main_activity_text"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<androidx.recyclerview.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:id="#+id/rcv"/>
<fragment
app:behavior_hideable="false"
app:behavior_peekHeight="100dp"
android:layout_marginTop="?attr/actionBarSize"
app:behavior_skipCollapsed="false"
android:id="#+id/filter_fragment"
app:layout_behavior="com.google.android.material.bottomsheet.BottomSheetBehavior"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:name="behavior.sheet.bottom.BackdropFragment" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
backdrop_fragment
<?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:background="#drawable/backdrop_fragment_background"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="#string/backdrop_content" />
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="75dp"
android:clickable="true"
android:focusable="true"
android:foreground="?android:attr/selectableItemBackground"
android:orientation="vertical"
card_view:cardCornerRadius="30dp"
card_view:cardElevation="5dp"
card_view:cardUseCompatPadding="false"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
card_view:contentPadding="10dp">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:id="#+id/txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="15dp"
android:text="Title"
android:textSize="20sp"
android:textStyle="bold" />
<ImageView
android:id="#+id/img"
android:layout_width="30dp"
android:layout_height="match_parent"
android:layout_marginStart="25dp"
android:layout_toRightOf="#+id/txt"
android:contentDescription="#string/app_name" />
<TextView
android:id="#+id/sub_txt"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginStart="25dp"
android:layout_toRightOf="#+id/img"
android:autoSizeMaxTextSize="8sp"
android:autoSizeMinTextSize="6sp"
android:autoSizeStepGranularity="2sp"
android:autoSizeTextType="uniform"
android:text="Title" />
</RelativeLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
Please set the Bottom sheet Linear Layout to wrap-content
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/backdrop_fragment_background"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="#string/backdrop_content" />
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="75dp"
android:clickable="true"
android:focusable="true"
android:foreground="?android:attr/selectableItemBackground"
android:orientation="vertical"
card_view:cardCornerRadius="30dp"
card_view:cardElevation="5dp"
card_view:cardUseCompatPadding="false"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
card_view:contentPadding="10dp">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:id="#+id/txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="15dp"
android:text="Title"
android:textSize="20sp"
android:textStyle="bold" />
<ImageView
android:id="#+id/img"
android:layout_width="30dp"
android:layout_height="match_parent"
android:layout_marginStart="25dp"
android:layout_toRightOf="#+id/txt"
android:contentDescription="#string/app_name" />
<TextView
android:id="#+id/sub_txt"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginStart="25dp"
android:layout_toRightOf="#+id/img"
android:autoSizeMaxTextSize="8sp"
android:autoSizeMinTextSize="6sp"
android:autoSizeStepGranularity="2sp"
android:autoSizeTextType="uniform"
android:text="Title" />
</RelativeLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
You have the RecyclerView in the activity_main layout file instead of inside the Fragment layout file.
Here is what you should do, create a class that inherits BottomSheetDialogFragment(). See below.
Add dependency implementation 'com.google.android.material:material:1.2.0-alpha04' inside the app/build.gradle.
Create your bottom sheet class
class BottomSheetExampleDialogFragment : BottomSheetDialogFragment() {
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
) : View? =
inflater.inflate(R.layout.bottom_sheet_example_dialog_fragment, container, false)
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
// Handle RecyclerView here
}
}
Bottom sheet layout file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/rcv"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
Then in your MainActivity you can show the bottom sheet by using
val bottomSheetFragment = BottomSheetExampleDialogFragment()
bottomSheetFragment.show(supportFragmentManager, bottomSheetFragment.getTag())