add a pulsing background to the reminder activity draggable element

app/src/main/kotlin/com/simplemobiletools/clock/activities/ReminderActivity.kt

@@ -6,18 +6,17 @@ import android.media.MediaPlayer
 import android.net.Uri
 import android.os.Bundle
 import android.os.Handler
+import android.view.animation.AnimationUtils
 import com.simplemobiletools.clock.R
 import com.simplemobiletools.clock.extensions.*
 import com.simplemobiletools.clock.helpers.ALARM_ID
 import com.simplemobiletools.clock.helpers.getPassedSeconds
 import com.simplemobiletools.clock.models.Alarm
-import com.simplemobiletools.commons.extensions.applyColorFilter
+import com.simplemobiletools.commons.extensions.*
-import com.simplemobiletools.commons.extensions.beVisibleIf
-import com.simplemobiletools.commons.extensions.showPickSecondsDialog
-import com.simplemobiletools.commons.extensions.updateTextColors
 import com.simplemobiletools.commons.helpers.MINUTE_SECONDS
 import kotlinx.android.synthetic.main.activity_reminder.*
 
+
 class ReminderActivity : SimpleActivity() {
     private val INCREASE_VOLUME_DELAY = 3000L
 
@@ -52,6 +51,9 @@ class ReminderActivity : SimpleActivity() {
 
         reminder_title.text = label
         reminder_text.text = if (isAlarmReminder) getFormattedTime(getPassedSeconds(), false, false) else getString(R.string.time_expired)
+        reminder_draggable_background.startAnimation(AnimationUtils.loadAnimation(this, R.anim.pulsing_animation))
+        reminder_draggable_background.applyColorFilter(getAdjustedPrimaryColor())
+
         reminder_stop.setOnClickListener {
             finish()
         }

app/src/main/res/anim/pulsing_animation.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<scale
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:duration="1000"
+    android:fillAfter="false"
+    android:fromXScale="1.0"
+    android:fromYScale="1.0"
+    android:interpolator="@android:anim/accelerate_interpolator"
+    android:pivotX="50%"
+    android:pivotY="50%"
+    android:repeatCount="infinite"
+    android:repeatMode="reverse"
+    android:toXScale="2.0"
+    android:toYScale="2.0"/>
+

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

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+
+    <solid
+        android:color="@android:color/white"/>
+
+    <size
+        android:width="@dimen/reminder_background_min_size"
+        android:height="@dimen/reminder_background_min_size"/>
+</shape>

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

@@ -43,6 +43,20 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="@+id/reminder_draggable"/>
 
+    <ImageView
+        android:id="@+id/reminder_draggable_background"
+        android:layout_width="@dimen/reminder_background_min_size"
+        android:layout_height="@dimen/reminder_background_min_size"
+        android:layout_marginBottom="@dimen/activity_margin"
+        android:alpha="0.2"
+        android:padding="@dimen/normal_margin"
+        android:src="@drawable/pulsing_background"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/reminder_stop"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toEndOf="@+id/reminder_snooze"
+        app:layout_constraintTop_toBottomOf="@+id/reminder_text"/>
+
     <ImageView
         android:id="@+id/reminder_draggable"
         android:layout_width="@dimen/stopwatch_button_small_size"

app/src/main/res/values/dimens.xml

@@ -2,6 +2,7 @@
     <dimen name="alarm_day_size">38dp</dimen>
     <dimen name="stopwatch_button_small_size">60dp</dimen>
     <dimen name="stopwatch_button_size">64dp</dimen>
+    <dimen name="reminder_background_min_size">70dp</dimen>
     <dimen name="lap_time_size">80dp</dimen>
     <dimen name="widget_alarm_icon_size">18dp</dimen>
     <dimen name="widget_time_height">48dp</dimen>