Improve session UI

app/src/main/java/net/pokeranalytics/android/ui/fragment/SessionFragment.kt

@@ -2,6 +2,7 @@ package net.pokeranalytics.android.ui.fragment
 
 import android.os.Bundle
 import android.view.*
+import android.view.animation.OvershootInterpolator
 import android.widget.Toast
 import androidx.interpolator.view.animation.FastOutSlowInInterpolator
 import androidx.recyclerview.widget.LinearLayoutManager
@@ -91,7 +92,7 @@ class SessionFragment : PokerAnalyticsFragment(), RowRepresentableDelegate, Bott
 	override fun clickOnClear(row: RowRepresentable) {
 		currentSession.updateValue(null, row)
 		sessionAdapter.refreshRow(row)
-		when(row) {
+		when (row) {
 			SessionRow.START_DATE, SessionRow.END_DATE -> updateSessionUI()
 		}
 	}
@@ -99,7 +100,7 @@ class SessionFragment : PokerAnalyticsFragment(), RowRepresentableDelegate, Bott
 	override fun setValue(value: Any?, row: RowRepresentable) {
 		currentSession.updateValue(value, row)
 		sessionAdapter.refreshRow(row)
-		when(row) {
+		when (row) {
 			SessionRow.START_DATE, SessionRow.END_DATE -> updateSessionUI()
 		}
 	}
@@ -155,14 +156,20 @@ class SessionFragment : PokerAnalyticsFragment(), RowRepresentableDelegate, Bott
 			SessionState.PENDING -> {
 				floatingActionButton.setImageResource(R.drawable.ic_outline_play)
 				bottomAppBar.menu.findItem(R.id.stop).isVisible = false
+				floatingActionButton.animate().scaleX(1f).scaleY(1f).alpha(1f)
+					.setInterpolator(OvershootInterpolator()).start()
 			}
 			SessionState.STARTED -> {
 				floatingActionButton.setImageResource(R.drawable.ic_outline_pause)
 				bottomAppBar.menu.findItem(R.id.stop).isVisible = true
+				floatingActionButton.animate().scaleX(1f).scaleY(1f).alpha(1f)
+					.setInterpolator(OvershootInterpolator()).start()
 			}
 			SessionState.PAUSED -> {
 				floatingActionButton.setImageResource(R.drawable.ic_outline_play)
 				bottomAppBar.menu.findItem(R.id.stop).isVisible = true
+				floatingActionButton.animate().scaleX(1f).scaleY(1f).alpha(1f)
+					.setInterpolator(OvershootInterpolator()).start()
 			}
 			SessionState.FINISHED -> {
 				bottomAppBar.menu.findItem(R.id.stop).isVisible = false