Add StateListAnimator.

Author: iammert

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

@@ -80,7 +80,9 @@
         android:layout_width="300dp"
         android:layout_height="48dp"
         app:radiusFactor="1"
+        android:clickable="true"
         android:layout_gravity="center_horizontal"
+        android:stateListAnimator="@animator/sl_state_animator"
         app:layout_behavior="iammert.com.view.scalinglib.ScalingLayoutBehavior">
 
         <LinearLayout

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

@@ -1,20 +1,20 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/rootLayout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="#ffffff"
-    android:orientation="vertical"
-    android:id="@+id/rootLayout">
+    android:orientation="vertical">
 
     <iammert.com.view.scalinglib.ScalingLayout
         android:id="@+id/scalingLayout"
         android:layout_width="56dp"
         android:layout_height="56dp"
-        android:layout_margin="16dp"
         android:layout_centerInParent="true"
-        android:elevation="4dp"
-        android:foreground="@drawable/sl_state_drawable"
+        android:layout_margin="16dp"
+        android:elevation="6dp"
+        android:stateListAnimator="@animator/sl_state_animator"
         app:radiusFactor="1">
 
         <RelativeLayout

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

@@ -15,6 +15,8 @@
         android:layout_marginLeft="16dp"
         android:layout_marginRight="16dp"
         android:layout_marginTop="8dp"
+        android:clickable="true"
+        android:stateListAnimator="@animator/sl_state_animator"
         app:radiusFactor="0.2">
 
         <RelativeLayout

scalinglib/src/main/res/animator/sl_state_animator.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:state_pressed="true">
+        <set>
+            <objectAnimator
+                android:duration="200"
+                android:propertyName="translationZ"
+                android:valueTo="6dp"
+                android:valueType="floatType" />
+
+            <objectAnimator
+                android:duration="200"
+                android:propertyName="scaleX"
+                android:valueTo="1.1"
+                android:valueType="floatType" />
+
+            <objectAnimator
+                android:duration="200"
+                android:propertyName="scaleY"
+                android:valueTo="1.1"
+                android:valueType="floatType" />
+
+        </set>
+    </item>
+
+    <item>
+        <set>
+            <objectAnimator
+                android:duration="200"
+                android:propertyName="translationZ"
+                android:valueTo="0dp"
+                android:valueType="floatType" />
+
+            <objectAnimator
+                android:duration="200"
+                android:propertyName="scaleX"
+                android:valueTo="1"
+                android:valueType="floatType" />
+
+            <objectAnimator
+                android:duration="200"
+                android:propertyName="scaleY"
+                android:valueTo="1"
+                android:valueType="floatType" />
+        </set>
+    </item>
+
+</selector>