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Change background of bottomnavigationtab

I need to get such result as here
I tried do like this :
my bottom_nav_menu_bg
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/home_btn_bg" android:state_checked="true" />
<item android:drawable="#color/gray_900"/>
</selector>
My BottomNavView
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="#+id/bottom_menu"
android:layout_width="match_parent"
android:layout_height="90dp"
android:layout_weight="1"
app:itemBackground="#drawable/bottom_navigation_menu_bg"
android:background="#color/gray_900"
app:menu="#menu/bottom_navigation"
app:itemIconTint="#drawable/tab_color"
app:itemTextColor="#drawable/tab_color"
android:backgroundTint="#null"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
/>
my home_btn_bg for getting gradient color
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:startColor="#color/black"
android:endColor="#color/light_green_100"
android:angle="90" />
</shape>
but i got smth like that :

How to create custom shadow for view?

I wanna to create custom shadow for view which i customize as like as my plan.
Custom Shadow looks like Card View elevation.
I need this type of shadow

Hm. This one is extremely simple and producing very similar (imo) result to what you requested. Obviously params like elevation, corner radius etc can/should be tweaked.
<?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:padding="16dp"
android:layout_height="match_parent"
tools:context=".FirstFragment">
<androidx.cardview.widget.CardView
android:id="#+id/textview_first"
android:layout_width="300dp"
android:layout_height="100dp"
app:cardCornerRadius="20dp"
app:cardElevation="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

Check this one. This works for me.
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Bottom 2dp Shadow -->
<item>
<shape android:shape="rectangle">
<solid android:color="#d8d8d8" />
<corners android:radius="7dp" />
</shape>
</item>
<!-- White Top color -->
<item android:bottom="3px">
<shape android:shape="rectangle">
<solid android:color="#FFFFFF" />
<corners android:radius="7dp" />
</shape>
</item>

How do I enable/disable a drawable for a button object in android?

I have a border that I made for a button that should be enabled when the button is clicked on.
<Button
android:id="#+id/imageView_red"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="15dp"
android:paddingRight="15dp"
android:src="#drawable/border" />
My question is how can I enable/disable this drawable? Does java provide a solution for this?
I tried looking at this post, but it didn't seem to answer that question
Android - border for button

All you need to do is you have to put the selector drawable in the button like this
<Button
android:id="#+id/button1"
android:background="#drawable/selector_xml_name"
android:layout_width="200dp"
android:layout_height="126dp"
android:text="Hello" />
And the drawable like this
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true">
<shape>
<stroke android:width="10dp"/>
</shape>
</item>
<item android:state_pressed="false">
<shape>
<stroke android:width="0dp"/>
</shape>
</item>

Android Spinner suggestions needed

I am using spinner in my layout and its appearance is as follows:
I want to increase the spinner size to make it more attractive and visible.
here is spinner xml and activity snippet.
<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/spinner_room"
android:layout_below="#id/Toolbar_Room"
android:textSize="52sp"
android:prompt="#string/room_prompt"
android:spinnerMode="dropdown"
android:dropDownSelector="#drawable/img_small_box_green"
android:drawSelectorOnTop="true"></Spinner>

Create a custom layout for your Spinner and inflate it through an adapter.
Check out this.
http://abhiandroid.com/ui/custom-spinner-examples.html

I have created spinner with card view check this you may like this design.
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/margin_5"
android:background="#android:color/white"
app:cardElevation="#dimen/margin_2"
app:contentPaddingBottom="#dimen/margin_5"
app:contentPaddingTop="#dimen/margin_5">
<Spinner
android:id="#+id/sp_filter_status"
style="#style/Widget.Spinner"
android:background="#drawable/spinner_expand_black"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:padding="0dp" />
</android.support.v7.widget.CardView>
drawable/spinner_expand_black
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item>
<shape>
<solid android:color="#android:color/white" />
<padding
android:bottom="#dimen/margin_1"
android:left="#dimen/margin_1"
android:right="#dimen/margin_1"
android:top="#dimen/margin_1" />
</shape>
</item>
<item>
<bitmap
android:gravity="end"
android:src="#mipmap/ic_action_expand_more" />
</item>
</layer-list>
#mipmap/ic_action_expand_more is image of bottom arrow you can find from material icon site.
Style
<style name="Widget.Spinner" parent="Widget.AppCompat.Spinner.DropDown">
<item name="android:background">?android:selectableItemBackground</item>
<item name="android:dropDownSelector">?android:selectableItemBackground</item>
<item name="android:divider">#null</item>
<item name="overlapAnchor">true</item>
<item name="android:textColor">#android:color/black</item>
<item name="android:textSize">#dimen/text_16</item>
<item name="android:focusableInTouchMode">true</item>
<item name="android:focusable">true</item>
</style>

put your Spinner inside CardView.
it will look more better.

Onclick highlight my list row doesn't working

Hello friends i have tried many different ways to highlight my listview but nothing works for me. i want to highlight my customlist view when i click on that and than open a new activity.
here is my xml file list_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Selector style for listrow -->
<item
android:state_selected="false"
android:state_pressed="false"
android:drawable="#drawable/gradient_bg" />
<item android:state_pressed="true"
android:drawable="#drawable/gradient_bg_hover" />
<item android:state_selected="true"
android:state_pressed="false"
android:drawable="#drawable/gradient_bg_hover" />
</selector>
here is my gradient_bg_hover.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<!-- Gradient BgColor for listrow Selected -->
<gradient
android:startColor="#18d7e5"
android:centerColor="#16cedb"
android:endColor="#09adb9"
android:angle="270" />
</shape>
And gradient_bg.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<!-- Gradient Bg for listrow -->
<gradient
android:startColor="#f1f1f2"
android:centerColor="#e7e7e8"
android:endColor="#cfcfcf"
android:angle="270" />
</shape>
and my _activity_setup.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/LinearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ListView
android:id="#+id/listview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:divider="#b5b5b5"
android:dividerHeight="1dp"
android:listSelector="#drawable/list_selector" />
</LinearLayout>
help me

Just remove the list-selector from your listview and instead, set the background for your item view:
Your listview:
<ListView
android:id="#+id/listview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:divider="#b5b5b5"
android:dividerHeight="1dp"
android:listSelector="#null" />
Your item view (for example):
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#drawable/list_selector" >
</LinearLayout>
Hope this helps.