Added new spinner_selected_item_background attribute and property

app/src/main/res/drawable/selected_item_background.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Designed and developed by 2019 skydoves (Jaewoong Eum)
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+  <solid android:color="#2EFFFFFF" />
+  <corners android:radius="8dp" />
+</shape>

app/src/main/res/drawable/spinner_background.xml

@@ -17,6 +17,6 @@
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
     <corners android:radius="8dp" />
     <gradient
-        android:endColor="#aa52aa14"
-        android:startColor="#26cc5c" />
+        android:endColor="#FF1565C0"
+        android:startColor="#FF1F88E5" />
 </shape>

app/src/main/res/layout/activity_custom.xml

@@ -87,15 +87,13 @@
       android:textSize="14.5sp"
       app:spinner_arrow_gravity="end"
       app:spinner_arrow_padding="8dp"
-      app:spinner_divider_color="@color/white_70"
-      app:spinner_divider_show="true"
-      app:spinner_divider_size="0.4dp"
+      app:spinner_divider_show="false"
       app:spinner_item_array="@array/questions1"
       app:spinner_item_height="46dp"
       app:spinner_popup_animation="normal"
       app:spinner_popup_background="@drawable/spinner_background"
       app:spinner_popup_elevation="14dp"
-      app:spinner_popup_max_height="92dp"
+      app:spinner_selected_item_background="@drawable/selected_item_background"
       tools:ignore="HardcodedText,UnusedAttribute" />
 
     <TextView

powerspinner/api/powerspinner.api

@@ -154,6 +154,7 @@ public final class com/skydoves/powerspinner/PowerSpinnerView : androidx/appcomp
 	public final fun getSpinnerPopupMaxHeight ()I
 	public final fun getSpinnerPopupWidth ()I
 	public final fun getSpinnerRecyclerView ()Landroidx/recyclerview/widget/RecyclerView;
+	public final fun getSpinnerSelectedItemBackground ()Landroid/graphics/drawable/Drawable;
 	public final fun getSpinnerWindow ()Landroid/widget/PopupWindow;
 	public final fun isShowing ()Z
 	public final fun notifyItemSelected (ILjava/lang/CharSequence;)V
@@ -193,6 +194,7 @@ public final class com/skydoves/powerspinner/PowerSpinnerView : androidx/appcomp
 	public final fun setSpinnerPopupHeight (I)V
 	public final fun setSpinnerPopupMaxHeight (I)V
 	public final fun setSpinnerPopupWidth (I)V
+	public final fun setSpinnerSelectedItemBackground (Landroid/graphics/drawable/Drawable;)V
 	public final fun show ()V
 	public final fun show (I)V
 	public final fun show (II)V
@@ -234,6 +236,7 @@ public final class com/skydoves/powerspinner/PowerSpinnerView$Builder {
 	public final fun setSpinnerPopupHeight (I)Lcom/skydoves/powerspinner/PowerSpinnerView$Builder;
 	public final fun setSpinnerPopupMaxHeight (I)Lcom/skydoves/powerspinner/PowerSpinnerView$Builder;
 	public final fun setSpinnerPopupWidth (I)Lcom/skydoves/powerspinner/PowerSpinnerView$Builder;
+	public final fun setSpinnerSelectedItemBackground (Landroid/graphics/drawable/Drawable;)Lcom/skydoves/powerspinner/PowerSpinnerView$Builder;
 }
 
 public final class com/skydoves/powerspinner/SpinnerAnimation : java/lang/Enum {

powerspinner/src/main/kotlin/com/skydoves/powerspinner/DefaultSpinnerAdapter.kt

@@ -53,7 +53,7 @@ public class DefaultSpinnerAdapter(
   }
 
   override fun onBindViewHolder(holder: DefaultSpinnerViewHolder, position: Int) {
-    holder.bind(spinnerItems[position], spinnerView)
+    holder.bind(spinnerView, spinnerItems[position], index == position)
   }
 
   override fun setItems(itemList: List<CharSequence>) {
@@ -68,6 +68,7 @@ public class DefaultSpinnerAdapter(
     val oldIndex = this.index
     this.index = index
     this.spinnerView.notifyItemSelected(index, spinnerItems[index])
+    notifyDataSetChanged()
     this.onSpinnerItemSelectedListener?.onItemSelected(
       oldIndex = oldIndex,
       oldItem = oldIndex.takeIf { it != NO_SELECTED_INDEX }?.let { spinnerItems[oldIndex] },
@@ -81,7 +82,7 @@ public class DefaultSpinnerAdapter(
   public class DefaultSpinnerViewHolder(private val binding: PowerspinnerItemDefaultPowerBinding) :
     RecyclerView.ViewHolder(binding.root) {
 
-    internal fun bind(item: CharSequence, spinnerView: PowerSpinnerView) {
+    internal fun bind(spinnerView: PowerSpinnerView, item: CharSequence, isSelectedItem: Boolean) {
       binding.itemDefaultText.apply {
         text = item
         typeface = spinnerView.typeface
@@ -98,6 +99,11 @@ public class DefaultSpinnerAdapter(
       if (spinnerView.spinnerItemHeight != NO_INT_VALUE) {
         binding.root.height = spinnerView.spinnerItemHeight
       }
+      if (spinnerView.spinnerSelectedItemBackground != null && isSelectedItem) {
+        binding.root.background = spinnerView.spinnerSelectedItemBackground
+      } else {
+        binding.root.background = null
+      }
     }
   }
 }

powerspinner/src/main/kotlin/com/skydoves/powerspinner/IconSpinnerAdapter.kt

@@ -63,7 +63,7 @@ public class IconSpinnerAdapter(
   }
 
   override fun onBindViewHolder(holder: IconSpinnerViewHolder, position: Int) {
-    holder.bind(spinnerItems[position], spinnerView)
+    holder.bind(spinnerView, spinnerItems[position], index == position)
   }
 
   override fun setItems(itemList: List<IconSpinnerItem>) {
@@ -81,6 +81,7 @@ public class IconSpinnerAdapter(
     val oldIndex = this.index
     this.index = index
     this.spinnerView.notifyItemSelected(index, item.text)
+    notifyDataSetChanged()
     this.onSpinnerItemSelectedListener?.onItemSelected(
       oldIndex = oldIndex,
       oldItem = oldIndex.takeIf { it != NO_SELECTED_INDEX }?.let { spinnerItems[oldIndex] },
@@ -94,7 +95,7 @@ public class IconSpinnerAdapter(
   public inner class IconSpinnerViewHolder(private val binding: PowerspinnerItemDefaultPowerBinding) :
     RecyclerView.ViewHolder(binding.root) {
 
-    internal fun bind(item: IconSpinnerItem, spinnerView: PowerSpinnerView) {
+    internal fun bind(spinnerView: PowerSpinnerView, item: IconSpinnerItem, isSelectedItem: Boolean) {
       binding.itemDefaultText.apply {
         text = item.text
         item.textTypeface?.let { typeface = it } ?: setTypeface(typeface, item.textStyle)
@@ -113,6 +114,11 @@ public class IconSpinnerAdapter(
           binding.root.height = spinnerView.spinnerItemHeight
         }
       }
+      if (spinnerView.spinnerSelectedItemBackground != null && isSelectedItem) {
+        binding.root.background = spinnerView.spinnerSelectedItemBackground
+      } else {
+        binding.root.background = null
+      }
     }
   }
 

powerspinner/src/main/kotlin/com/skydoves/powerspinner/PowerSpinnerView.kt

@@ -232,6 +232,9 @@ public class PowerSpinnerView : AppCompatTextView, DefaultLifecycleObserver {
   /** A fixed item height size of the spinner popup. */
   public var spinnerItemHeight: Int = NO_INT_VALUE
 
+  /** A background of the selected item. */
+  public var spinnerSelectedItemBackground: Drawable? = null
+
   /** The spinner popup will be dismissed when got notified an item is selected. */
   public var dismissWhenNotifiedItemSelected: Boolean = true
 
@@ -475,6 +478,10 @@ public class PowerSpinnerView : AppCompatTextView, DefaultLifecycleObserver {
           )
       }
 
+      if (hasValue(R.styleable.PowerSpinnerView_spinner_selected_item_background)) {
+        spinnerSelectedItemBackground = getDrawable(R.styleable.PowerSpinnerView_spinner_selected_item_background)
+      }
+
       if (hasValue(R.styleable.PowerSpinnerView_spinner_popup_elevation)) {
         _spinnerPopupElevation =
           getDimensionPixelSize(
@@ -1001,6 +1008,10 @@ public class PowerSpinnerView : AppCompatTextView, DefaultLifecycleObserver {
       this.powerSpinnerView.spinnerItemHeight = value
     }
 
+    public fun setSpinnerSelectedItemBackground(value: Drawable): Builder = apply {
+      this.powerSpinnerView.spinnerSelectedItemBackground = value
+    }
+
     public fun setPreferenceName(value: String): Builder = apply {
       this.powerSpinnerView.preferenceName = value
     }

powerspinner/src/main/res/values/attrs_powerspinner.xml

@@ -70,6 +70,8 @@
     <attr name="spinner_popup_padding" format="dimension" />
     <!-- Sets a fixed item height of the popup. -->
     <attr name="spinner_item_height" format="dimension" />
+    <!-- Sets the background of the popup selected item -->
+    <attr name="spinner_selected_item_background" format="color|reference" />
     <!-- Sets the elevation size of the popup. -->
     <attr name="spinner_popup_elevation" format="dimension" />
     <!-- 	Sets the items of the popup. -->